Light emitting device including organometallic compound, electronic device and electronic apparatus including light emitting device, and organometallic compound

Abstract

Provided are a light emitting device including an organometallic compound, an electronic device and an electronic apparatus including the light emitting device, and an organometallic compound, the light emitting device including a first electrode, a second electrode opposing the first electrode, and an intermediate layer between the first electrode and the second electrode, the light emitting device further includes an organometallic compound represented by Formula 1. In addition, provided are an electronic device and an electronic apparatus each including a light emitting device, and an organometallic compound represented by Formula 1, the variables in Formula 1 being the same as defined in the specification. Formula 1

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0095158, filed on July 18, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. TECHNICAL FIELD

[0002] One or more embodiments of the present disclosure relate to an organic light emitting device including an organic metal compound, electronic devices and electronic apparatuses each including the organic light emitting device, and the organic metal compound. BACKGROUND

[0003] Among light emitting devices, self-emissive devices (e.g., organic light emitting devices) are known for their relatively wide viewing angle, high contrast ratio, short response time, and / or excellent or desirable (suitable) characteristics in terms of luminance, driving voltage, and / or response speed. In other words, self-emissive devices such as organic light emitting devices stand out due to these advantageous properties.

[0004] In a light emitting device, a first electrode is disposed on a substrate, followed sequentially by a hole transport region, an emission layer, an electron transport region, and a second electrode. Holes provided by the first electrode move toward the emission layer through the hole transport region, while electrons provided by the second electrode move toward the emission layer through the electron transport region. These charge carriers (i.e., holes and electrons) recombine in the emission layer to generate excitons. The excitons transition from an excited state and decay to a ground state, thereby generating light. SUMMARY

[0005] One or more aspects of embodiments of the present disclosure relate to an organic light emitting device including an organic metal compound, electronic devices and electronic apparatuses each including the organic light emitting device, and the organic metal compound.

[0006] Additional aspects will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the description, or can be learned by practice of the given examples of the disclosure.

[0007] According to one or more embodiments of the present disclosure, an organic light emitting device includes:

[0008] a first electrode;

[0009] a second electrode opposite (e.g., facing) the first electrode; and

[0010] an intermediate layer between the first electrode and the second electrode and including an emission layer;

[0011] wherein the organic light emitting device further includes an organic metal compound represented by Formula 1:

[0012] Formula 1

[0013]

[0014] wherein, in formula 1,

[0015] M1may be platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm),

[0016] A 10 , A 20 , A 30 , A 40 , and A 50 may each independently be C5-C 60 carbocyclyl or C1-C 60 heterocyclyl, 11

[0017] X1may be C(R1) or N,

[0018] Y2and Y3may each be C or N,

[0019] T1to T4each represent a bond,

[0020] L 11 to L 13 may each independently be a single bond, *-O-*', *-S-*', *-C(R2)(R3)-*', *-C(R2)=*', *=C(R2)-*', *-C(R2)=C(R3)-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R2)-*', *-N(R2)-*', *-P(R2)-*', *-Si(R2)(R3)-*', *-P(=O)(R2)-*', or *-Ge(R2)(R3)-*',

[0021] a11, a12, and a13may each independently be an integer of 0 to 5,

[0022] Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 may each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidine group, a hydrazine group, a hydrazone group, a C1-C 10a alkyl group which is unsubstituted or substituted with at least one R 60 , a C2-C 10a alkenyl group which is unsubstituted or substituted with at least one R 60 , a C2-C10a C2-C 60 alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 alkoxy, unsubstituted or substituted with at least one R 10a C3-C 10 cycloalkyl, unsubstituted or substituted with at least one R 10a C1-C 10 heterocycloalkyl, unsubstituted or substituted with at least one R 10a C3-C 10 cycloalkenyl, unsubstituted or substituted with at least one R 10a C1-C 10 heterocycloalkenyl, unsubstituted or substituted with at least one R 10a C6-C 60 aryl, unsubstituted or substituted with at least one R 10a C6-C 60 aryloxy, unsubstituted or substituted with at least one R 10a C6-C 60 arylthio, unsubstituted or substituted with at least one R 10a C1-C 60 heteroaryl, unsubstituted or substituted with at least one R 10a C1-C 60 heteroaryloxy, unsubstituted or substituted with at least one R 10a C1-C 60 heteroarylthio, unsubstituted or substituted with at least one R 10a monovalent non-aromatic condensed polycyclic group, unsubstituted or substituted with at least one R 10a monovalent non-aromatic condensed heteropolycyclic group, -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2), or -P(=S)(Q1)(Q2),

[0023] b10, b20, b30, b40, and b50 can each independently be an integer from 0 to 10,

[0024] two or more adjacent groups of Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 may optionally be combined together to form a C5-C 10a carbocyclic group, unsubstituted or substituted with at least one R 60 or a C5-C10a C1-C 60 heterocyclyl,

[0025] R 10a may be:

[0026] deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, or hydrazono;

[0027] each being unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ), or any combination thereof; 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, or C1-C 60 alkoxy;

[0028] each being unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q22 C3-C or any combination thereof 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy or C6-C 60 aryl thiols; or

[0029] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ),and

[0030] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of these can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 Alkoxy groups; or those that are unsubstituted or substituted with deuterium, -F, cyano, or C1-C. 60 Alkyl, C1-C 60 C3-C of alkoxy, phenyl, biphenyl, or any combination thereof 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0031] According to one or more embodiments of this disclosure, the electronic device includes a light-emitting device.

[0032] According to one or more embodiments of this disclosure, the electronic device includes a light-emitting device.

[0033] According to one or more embodiments of the present disclosure, organometallic compounds represented by Formula 1 are provided. Attached Figure Description

[0034] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The above and other aspects, features, and advantages of certain embodiments of the disclosure will become apparent from the following description, by way of non-limitation, taken in conjunction with the accompanying drawings, in which:

[0035] Figure 1 is a schematic view of a structure of an organic light emitting device according to one or more embodiments of the present disclosure;

[0036] Figure 2 is a schematic view of a structure of a light emitting apparatus according to one or more embodiments of the present disclosure;

[0037] Figure 3 is a schematic view of a structure of a light emitting apparatus according to one or more embodiments of the present disclosure;

[0038] Figure 4 is a schematic perspective view of an electronic device including an organic light emitting device according to one or more embodiments of the present disclosure;

[0039] Figure 5 is a schematic view of an exterior of a vehicle as an electronic device including an organic light emitting device according to one or more embodiments of the present disclosure; and

[0040] Figures 6A to 6C are schematic views of an interior of a vehicle as an electronic device including an organic light emitting device according to one or more embodiments of the present disclosure. DETAILED DESCRIPTION

[0041] Reference will now be made in detail to one or more embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout the specification and drawings, and which can be provided without repeating its repetitive description for the sake of brevity. In this regard, the presented embodiments can have different forms, and should not be construed as being limited to the description set forth herein. Thus, the embodiments of the present disclosure are described by referring to the drawings to explain aspects of the present disclosure. As used herein, the term "and / or" or "or" can include any and all combinations of one or more of the associated listed items. Throughout the disclosure, expressions such as "at least one of", "one of", and "selected from" modify the list of elements (elements) that follows the expression, but do not modify the individual elements (elements) in the list. For example, "at least one of a, b, and c", "selected from at least one of a, b, and c", "selected from at least one of a to c", and the like can mean only a, only b, only c, both a and b (e.g., simultaneously), both a and c (e.g., simultaneously), both b and c (e.g., simultaneously), all of a, b, and c, or variations thereof. " / " used herein can be interpreted as "and" or "or" depending on the situation.

[0042] According to one or more embodiments of the present disclosure, a light emitting device (or referred to as "organic light emitting device") includes:

[0043] a first electrode;

[0044] a second electrode opposite to (e.g., facing) the first electrode; and

[0045] an intermediate layer between the first electrode and the second electrode and including an emission layer;

[0046] wherein the light emitting device further includes an organometallic compound represented by Formula 1:

[0047] Formula 1

[0048]

[0049] For the description of Formula 1, reference can be made to the present disclosure.

[0050] According to one or more embodiments,

[0051] The first electrode of the light emitting device can be an anode,

[0052] The second electrode of the light emitting device can be a cathode,

[0053] The intermediate layer can further include a hole transport region between the first electrode and the emission layer and an electron transport region between the emission layer and the second electrode,

[0054] The hole transport region can include a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer, or any combination thereof, and

[0055] The electron transport region can include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0056] In one or more embodiments, the intermediate layer of the light-emitting device can include an organometallic compound represented by Formula 1.

[0057] In one or more embodiments, the emission layer of the light-emitting device can include an organometallic compound represented by Formula 1 (e.g., as a first compound).

[0058] In one or more embodiments, the emission layer of the light-emitting device can include a dopant and a host, and the organometallic compound represented by Formula 1 can be included in the dopant. For example, the organometallic compound can act as a dopant. For example, in one or more embodiments, the emission layer can emit blue light. The blue light can have a maximum emission wavelength (e.g., a wavelength of maximum emission intensity) in a range of, for example, about 430 nanometers (nm) to about 480 nm.

[0059] In one or more embodiments, the electron transport region of the light-emitting device can include a hole blocking layer, and the hole blocking layer can include a phosphine oxide-containing compound, a silicon-containing compound, or any combination thereof. According to one or more embodiments, the hole blocking layer can directly contact the emission layer.

[0060] According to one or more embodiments, the light-emitting device can further include a nitrogen-containing C1-C 60 a second compound including a heterocyclyl group, a third compound including a group represented by Formula 3, a fourth compound capable of (will emit) delayed fluorescence, or any combination thereof,

[0061] wherein the organometallic compound (e.g., as a first compound), the second compound, the third compound, and the fourth compound in the light-emitting device can be different from each other:

[0062] Formula 3

[0063]

[0064] wherein, in Formula 3,

[0065] the ring CY 71 and the ring CY 72 may each independently be a π-electron rich C3-C 60 a cyclyl group or a pyridyl group,

[0066] X 71 may be a single bond or a linking group including O, S, N, B, C, Si, or any combination thereof, and

[0067] * indicates a bonding site to an atom included in a remaining portion of the third compound other than the group represented by Formula 3.

[0068] According to one or more embodiments, the organometallic compound can include at least one deuterium.

[0069] In one or more embodiments, the second compound, the third compound, and the fourth compound can each include at least one deuterium.

[0070] In one or more embodiments, the second compound can include at least one silicon.

[0071] In one or more embodiments, the third compound can include at least one silicon.

[0072] In one or more embodiments, the light emitting device can include a second compound and a third compound in addition to the organometallic compound represented by Formula 1, and at least one of the second compound and the third compound can include at least one deuterium, at least one silicon, and / or a (e.g., any suitable) combination thereof.

[0073] According to one or more embodiments, the light emitting device (e.g., an emission layer in the light emitting device) can include a second compound in addition to the organometallic compound. At least one of the organometallic compound and the second compound can include at least one deuterium. For example, in one or more embodiments, the light emitting device (e.g., an emission layer in the light emitting device) can include a third compound, a fourth compound, or any combination thereof in addition to the organometallic compound and the second compound.

[0074] In one or more embodiments, the light emitting device (e.g., an emission layer in the light emitting device) can include a third compound in addition to the organometallic compound. At least one of the organometallic compound and the third compound can include at least one deuterium. For example, in one or more embodiments, the light emitting device (e.g., an emission layer in the light emitting device) can include a second compound, a fourth compound, or any combination thereof in addition to the organometallic compound and the third compound.

[0075] In one or more embodiments, the light-emitting device (e.g., an emissive layer in the light-emitting device) can include a fourth compound in addition to the organometallic compound. At least one of the organometallic compound and the fourth compound can include at least one deuterium. The fourth compound can have an effect of improving color purity, light-emitting efficiency, and lifetime characteristics of the light-emitting device. For example, in one or more embodiments, the light-emitting device (e.g., an emissive layer in the light-emitting device) can include a second compound, a third compound, or any combination thereof in addition to the organometallic compound and the fourth compound.

[0076] In one or more embodiments, the light-emitting device (e.g., an emissive layer in the light-emitting device) can include a second compound and a third compound in addition to the organometallic compound. The second compound and the third compound can form an exciplex. At least one of the organometallic compound, the second compound, and the third compound can include at least one deuterium.

[0077] According to one or more embodiments, an emissive layer in a light-emitting device can include: i) an organometallic compound; and ii) a second compound, a third compound, a fourth compound, or any combination thereof, wherein the emissive layer can emit blue light.

[0078] In one or more embodiments, the blue light can have a maximum emission wavelength in a range of about 430 nm to about 480 nm, about 430 nm to about 475 nm, about 440 nm to about 475 nm, about 450 nm to about 475 nm, about 430 nm to about 470 nm, about 440 nm to about 470 nm, about 450 nm to about 470 nm, about 430 nm to about 465 nm, about 440 nm to about 465 nm, about 450 nm to about 465 nm, about 430 nm to about 460 nm, about 440 nm to about 460 nm, or about 450 nm to about 460 nm.

[0079] According to one or more embodiments, the second compound can include a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or any combination thereof.

[0080] According to one or more embodiments, the third compound can not include (e.g., can exclude) the following compounds:

[0081]

[0082] According to one or more embodiments, the fourth compound can be a compound in which a difference (e.g., an absolute value of the difference) between a triplet state energy level (eV) and a singlet state energy level (eV) thereof is at least 0 eV but not more than about 0.5 eV (or at least 0 eV but not more than about 0.3 eV).

[0083] In one or more embodiments, the fourth compound may be a compound comprising at least one cyclic group containing both boron (B) and nitrogen (N) as cyclic atoms (e.g., simultaneously).

[0084] In one or more embodiments, the fourth compound may be a C8-C-containing compound comprising two or more cyclic groups (e.g., one is a first ring and the other is a second ring) that are condensed while sharing B. 60 Polycyclic compounds.

[0085] In one or more embodiments, the fourth compound may include a condensation ring, wherein at least one third ring is condensed with at least one fourth ring, for example to form a condensation ring comprising four or more rings.

[0086] The third ring of the fourth compound may be a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, a cyclooctyl group, an adamantyl group, a norbornene group, a norbornel group, a bicyclic [1.1.1]pentyl group, a bicyclic [2.1.1]hexyl group, a bicyclic [2.2.2]octyl group, a phenyl group, a pyridine group, a pyrimidine group, a pyrazine group, a pyrazine group, or a triazine group, and

[0087] The fourth ring of the fourth compound can be a 1,2-azaboronic heterocyclohexadiene group, a 1,3-azaboronic heterocyclohexadiene group, a 1,4-azaboronic heterocyclohexadiene group, a 1,2-dihydro-1,2-azaboronic heterocyclohexadiene group, a 1,4-oxaboronic heterocyclohexadiene group, a 1,4-thioboronic heterocyclohexadiene group, or a 1,4-dihydroboronic heterocyclohexadiene group.

[0088] According to one or more embodiments, the third compound may not include (e.g., may exclude) compounds represented by formula 3-1 described herein (e.g., any).

[0089] According to one or more embodiments, the second compound may include a compound represented by Formula 2:

[0090] Formula 2

[0091]

[0092] In Equation 2,

[0093] L 51 To L 53 Each bond can be independently a single bond, unsubstituted, or substituted with at least one R. 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60heterocyclyl,

[0094] b51 to b53 can each independently be an integer of 1 to 5,

[0095] X 54 may be N or C(R 54 ), X 55 may be N or C(R 55 ), X 56 may be N or C(R 56 ), and is selected from at least one of X 54 to X 56 at least one of X

[0096] R 51 to R 56 and R 10a may each be the same as described herein.

[0097] In one or more embodiments, the third compound can include a compound represented by Formula 3-1, a compound represented by Formula 3-2, a compound represented by Formula 3-3, a compound represented by Formula 3-4, a compound represented by Formula 3-5, or any combination thereof:

[0098] Formula 3-1

[0099]

[0100] Formula 3-2

[0101]

[0102] Formula 3-3

[0103]

[0104] Formula 3-4

[0105]

[0106] Formula 3-5

[0107]

[0108] wherein, in Formula 3-1 to Formula 3-5,

[0109] ring CY 71 to ring CY 74 may each independently be a π-electron rich C3-C 60 cycloalkyl group or a pyridyl group,

[0110] X 82 may be a single bond, O, S, N[(L 82 ) b82 -R82 ]、C(R 82a (R) 82b ) or Si(R 82a (R) 82b ),

[0111] X 83 It can be a single bond, O, S, N[(L 83 ) b83 -R 83 ]、C(R 83a (R) 83b ) or Si(R 83a (R) 83b ),

[0112] X 84 It can be O, S, N[(L 84 ) b84 -R 84 ]、C(R 84a (R) 84b ) or Si(R 84a (R) 84b ),

[0113] X 85 It can be C or Si.

[0114] L 81 To L 85 They can all be independent single bonds, *-C(Q4)(Q5)-*', *-Si(Q4)(Q5)-*', unsubstituted or substituted with at least one R. 10a C3-C rich in π electrons 60 The cyclic group is either unsubstituted or substituted with at least one R. 10a The pyridine group, wherein Q4 and Q5 may both be the same as described with respect to Q1.

[0115] b81 to b85 can each be an independent integer from 1 to 5.

[0116] R 71 To R 74 R 81 To R 85 R 82a R 82b R 83a R 83b R 84a and R 84b All can be the same as described here.

[0117] a71 to a74 can each be an independent integer from 0 to 20, and

[0118] R 10a It can be the same as described here.

[0119] In one or more embodiments, the fourth compound can be a compound represented by Formula 502, a compound represented by Formula 503, or any combination thereof:

[0120] Formula 502

[0121]

[0122] Formula 503

[0123]

[0124] wherein, in Formula 502 and Formula 503,

[0125] Ring A 501 to Ring A 504 may each independently be C3-C 60 carbocyclyl or C1-C 60 heterocyclyl,

[0126] Y 505 may be O, S, N(R 505 ), B(R 505 ), C(R 505a )(R 505b ), or Si(R 505a )(R 505b ),

[0127] Y 506 may be O, S, N(R 506 ), B(R 506 ), C(R 506a )(R 506b ), or Si(R 506a )(R 506b ),

[0128] Y 507 may be O, S, N(R 507 ), B(R 507 ), C(R 507a )(R 507b ), or Si(R 507a )(R 507b ),

[0129] Y 508 may be O, S, N(R 508 ), B(R 508 ), C(R 508a )(R 508b ), or Si(R 508a )(R 508b ),

[0130] Y51 and Y 52 may each independently be B, P(=O), or S(=O),

[0131] R 500a , R 500b , R 501 to R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a and R 508b may each be the same as described herein, and

[0132] a501 to a504 can each independently be an integer of 0 to 20.

[0133] According to one or more embodiments of the present disclosure, the light emitting device can have a structure of the first embodiment or the second embodiment.

[0134] First Embodiment

[0135] According to the first embodiment, the emission layer of the intermediate layer in the light emitting device can include an organic metal compound represented by Formula 1, and can further include a host, wherein the organic metal compound and the host can be different from each other, and the emission layer can emit phosphorescence or fluorescence emitted from the organic metal compound. For example, according to the first embodiment, the organic metal compound can be a dopant or an emitter. For example, in one or more embodiments, the organic metal compound can be a phosphorescent dopant or a phosphorescent emitter.

[0136] The phosphorescence or fluorescence emitted from the organic metal compound can be blue light.

[0137] In one or more embodiments, the emission layer can further include an auxiliary dopant. The auxiliary dopant can be effective to transfer energy to the organic metal compound serving as a dopant or an emitter, in this regard, the auxiliary dopant can be used to improve the light emitting efficiency of the organic metal compound.

[0138] The auxiliary dopant can be different from each of the organic metal compound and the host.

[0139] According to one or more embodiments, the auxiliary dopant can be a compound emitting delayed fluorescence.

[0140] In one or more embodiments, the auxiliary dopant can be a compound including at least one ring group including each of B and N as a ring-forming atom.

[0141] Second Embodiment

[0142] According to a second embodiment, an emission layer of an intermediate layer in a light emitting device can include an organic metal compound represented by Formula 1, and can further include a host and a dopant, wherein the organic metal compound, the host, and the dopant can be different from each other, and the emission layer can emit phosphorescence or fluorescence (e.g., delayed fluorescence) emitted from the dopant.

[0143] According to one or more embodiments, the organic metal compound in the second embodiment is not a dopant, but can be used as an auxiliary dopant that transfers energy to a dopant (or an emitter).

[0144] In one or more embodiments, the organic metal compound in the second embodiment can be used as an emitter, and can also be used as an auxiliary dopant that transfers energy to a dopant (or an emitter).

[0145] For example, in one or more embodiments, the phosphorescence or fluorescence emitted from the dopant (or the emitter) in the second embodiment can be blue phosphorescence or blue fluorescence (e.g., blue delayed fluorescence).

[0146] The dopant (or the emitter) in the second embodiment can be a phosphorescent dopant material (e.g., the organic metal compound represented by Formula 1, the organic metal compound represented by Formula 401, or any combination thereof) or any fluorescent dopant material (e.g., the compound represented by Formula 501, the compound represented by Formula 502, the compound represented by Formula 503, or any combination thereof).

[0147] In the first embodiment and the second embodiment, the blue light can be blue light having a maximum emission wavelength in a range of about 390 nm to about 500 nm, about 410 nm to about 490 nm, about 430 nm to about 480 nm, about 440 nm to about 475 nm, or about 455 nm to about 470 nm.

[0148] The auxiliary dopant in the first embodiment can include, for example, a fourth compound represented by Formula 502 or Formula 503.

[0149] According to one or more embodiments, the host in the first embodiment and the second embodiment can be any host material (e.g., the compound represented by Formula 301, the compound represented by Formula 301-1, the compound represented by Formula 301-2, or any combination thereof).

[0150] In one or more embodiments, the host in the first embodiment and the second embodiment can be the second compound, the third compound, or any combination thereof.

[0151] In one or more embodiments, the light-emitting device can further include a capping layer disposed outside (e.g., on) the first electrode and / or outside (e.g., on) the second electrode.

[0152] In one or more embodiments, the light-emitting device can further include at least one of a first capping layer disposed outside (e.g., on) the first electrode and a second capping layer disposed outside (e.g., on) the second electrode, wherein at least one of the first capping layer and the second capping layer can include the organometallic compound represented by Formula 1. More details regarding the first capping layer and / or the second capping layer can be referred to the description provided herein.

[0153] According to one or more embodiments, the light-emitting device can include:

[0154] a first capping layer disposed outside (e.g., on) the first electrode and including the organometallic compound represented by Formula 1;

[0155] a second capping layer disposed outside (e.g., on) the second electrode and including the organometallic compound represented by Formula 1; or

[0156] a first capping layer and a second capping layer.

[0157] The phrase “the (interlayer and / or capping layer) includes the organometallic compound represented by Formula 1” as used herein can be understood as “the (interlayer and / or capping layer) can include one organometallic compound represented by Formula 1 or two different kinds of organometallic compounds each represented by Formula 1”.

[0158] According to one or more embodiments, the interlayer and / or the capping layer can include only Compound 1 as the organometallic compound. In this regard, Compound 1 can be present in an emission layer of the light-emitting device. In one or more embodiments, the interlayer can include Compound 1 and Compound 2 as the organometallic compounds. In this regard, Compound 1 and Compound 2 can be present in substantially the same layer (e.g., both (e.g., simultaneously) Compound 1 and Compound 2 can be present in the emission layer), or can be present in different layers (e.g., Compound 1 can be present in the emission layer, and Compound 2 can be present in an electron transport region).

[0159] The term “interlayer” as used herein refers to all of a single layer and / or multiple layers between the first electrode and the second electrode of the light-emitting device.

[0160] According to one or more embodiments of the disclosure, an electronic device can include a light emitting device. The electronic device can further include a thin film transistor. For example, the electronic device can further include a thin film transistor including a source electrode and a drain electrode, wherein a first electrode of the light emitting device can be electrically connected to the source electrode or the drain electrode. According to one or more embodiments, the electronic device can further include a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof. Further details regarding the electronic device can be found in the description provided herein.

[0161] According to one or more embodiments of the disclosure, an electronic device can include a light emitting device.

[0162] For example, the electronic device can be at least one of a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a phone (e.g., a portable phone), a tablet personal computer, a phablet, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro display, a three-dimensional (3D) display, a virtual reality display, an augmented reality display, a vehicle, a video wall having a plurality of displays spliced together, a theater screen, a stadium screen, a light therapy device, and a sign.

[0163] According to one or more embodiments of the disclosure, an organometallic compound represented by Formula 1 is provided. For a description of Formula 1, reference can be made to the disclosure.

[0164] A person of ordinary skill in the art can identify a method of synthesizing the organometallic compound by referring to the synthesis examples and / or examples provided herein.

[0165] Description of Formula 1

[0166] Formula 1

[0167]

[0168] In Formula 1, M1 can be platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm).

[0169] According to one or more embodiments, M1 can be Pt, Pd, or Au.

[0170] According to one or more embodiments, M1 can be Pt.

[0171] A in Formula 1 10 A 20 A 30 A 40 and A 50 Each can be independently C5-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0172] According to one or more embodiments, A 10 A 20 A 30 A 40 and A 50 They can all be independently phenyl groups, naphthyl groups, anthracene groups, phenanthrene groups, benzo[9,10]phenanthrene groups, pyrene groups, Groups, cyclopentadienyl group, 1,2,3,4-tetrahydronaphthyl group, furan group, thiophene group, thiophene group, indene group, fluorene group, indole group, carbazole group, benzofuran group, dibenzofuran group, benzothiophene group, dibenzothiophene group, benzothiophene group, dibenzothiophene group, indolepyridine group, indolepyridine group, benzofuranpyrimidine group, benzothiophenpyrimidine group, benzothiophenpyrimidine group, indolepyrimidine group, benzofuranpyrimidine group, benzothiophenpyrimidine group, benzothiophenpyrimidine group, dihydropyridine group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group Quinazoline group, phenanthrene-rhein group, pyrrole group, pyrazole group, imidazole group, 2,3-dihydroimidazolium group, triazole group, 2,3-dihydrotriazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, 2,3-dihydrobenzimidazole group, imidazopyridine group, 2,3-dihydroimidazopyridine group, imidazopyrimidine group, 2,3-dihydroimidazopyrimidine group, imidazopyrazine group, 2,3-dihydroimidazopyrazole group, benzoxazole group, benzothiazole group, benzooxadiazole group, benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group or 5,6,7,8-tetrahydroquinoline group.

[0173] According to one or more embodiments, A 10 A 20 A 30 A 40 and A 50 They can all be independently generated by

[0174] One of the groups represented by formulas 2-1 to 2-43:

[0175]

[0176]

[0177]

[0178] wherein, in formula 2-1 to formula 2-43,

[0179] X 21 to X 23 may each independently be C(Z 24 ) or C-*, wherein X 21 to X 23 at least two of which can each be C-*, i) X

[0180] X 24 may be N-*, and X 25 and X 26 may each independently be C(Z 24 ) or C-*, wherein X 25 and X 26 at least one of which can be C-*, i) X

[0181] X 27 and X 28 may each independently be N, N(Z 25 ) or N-*, X 29 may be C(Z 24 ) or C-*, wherein i) at least one of X 27 and X 28 may be N-*, and X 29 may be C-*, or ii) X 27 and X 28 may each be N-*, and X 29 may be C(Z 24 ),

[0182] Z 21 to Z 25 may each independently be deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, hydrazono, C1-C 20 alkyl, C2-C 20 alkenyl, C2-C 20 alkynyl, C1-C 20 alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, phenanthryl, anthryl, benzo[9,10]phenanthryl, pyridyl, pyrimidyl, carbazolyl, or triazinyl,

[0183] c21may be 1, 2, or 3,

[0184] c22may be 1, 2, 3, 4, or 5,

[0185] c23may be 1, 2, 3, or 4,

[0186] c24may be 1 or 2, and

[0187] * indicates a bonding site to an adjacent atom.

[0188] X1in Formula 1 can be C(R1) or N.

[0189] Y2and Y3in Formula 1 can each be C or N.

[0190] According to one or more embodiments, Y2and Y3may each be C.

[0191] T1to T4in Formula 1 can each represent a bond.

[0192] According to one or more embodiments, T1to T4may each independently be a coordinate bond or a covalent bond.

[0193] According to one or more embodiments, T1to T4may each independently represent a single bond or a double bond.

[0194] According to one or more embodiments, two of (e.g., selected from) T1to T4may each be a coordinate bond, and the other two can each be a covalent bond. Thus, the organometallic compound can be electrically neutral, without having a salt form including (e.g., consisting of) a cation and an anion.

[0195] In one or more embodiments, T1and T4may each be a coordinate bond, and T2and T3may each be a covalent bond.

[0196] L in Formula 1 11 to L 13 may each independently be a single bond, *-O-*', *-S-*', *-C(R2)(R3)-', *-C(R2)=', *=C(R2)-', *-C(R2)=C(R3)-', *-C(=O)-', *-C(=S)-', *-C=C-', *-B(R2)-', *-N(R2)-', *-P(R2)-', *-Si(R2)(R3)-', *-P(=O)(R2)-', or *-Ge(R2)(R3)-'.

[0197] According to one or more embodiments, L 11 to L 13 may each independently be a single bond, *-O-*', *-S-*', *-N(R2)-', *-C(R2)(R3)-', *-Si(R2)(R3)-', or *-B(R2)-'.

[0198] According to one or more embodiments, L 11 and L 13 may each be a single bond.

[0199] According to one or more embodiments, L 12 may be *-O-*', *-S-*', *-N(R2)-*' or *-C(R2)(R3)-*'.

[0200] a11, a12 and a13 in Formula 1 may each independently be an integer from 0 to 5.

[0201] According to one or more embodiments, a11, a12 and a13 may each be 1.

[0202] Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 and R 50 in Formula 1 may each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, hydrazono, unsubstituted or substituted with at least one R 10a , C1-C 60 alkyl unsubstituted or substituted with at least one R 10a , C2-C 60 alkenyl unsubstituted or substituted with at least one R 10a , C2-C 60 alkynyl unsubstituted or substituted with at least one R 10a , C1-C 60 alkoxy unsubstituted or substituted with at least one R 10a , C3-C 10 cycloalkyl unsubstituted or substituted with at least one R 10a , C1-C 10 heterocycloalkyl unsubstituted or substituted with at least one R 10a , C3-C 10 cycloalkenyl unsubstituted or substituted with at least one R 10a , C1-C 10 heterocycloalkenyl unsubstituted or substituted with at least one R 10a , C6-C 60 aryl unsubstituted or substituted with at least one R 10a , C6-C 60 aryloxy unsubstituted or substituted with at least one R 10a , C6-C 60 arylthio unsubstituted or substituted with at least one R 10a , C1-C 60 heteroaryl unsubstituted or substituted with at least one R10a C1-C 60 heteroaryloxy, unsubstituted or substituted with at least one R 10a C1-C 60 heteroarylthio, unsubstituted or substituted with at least one R 10a monovalent non-aromatic condensed polycyclic group, unsubstituted or substituted with at least one R 10a monovalent non-aromatic condensed heteropolycyclic group, -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2), or -P(=S)(Q1)(Q2).

[0203] two or more adjacent groups selected from the group consisting of Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 in Formula 1 can be optionally combined together to form a C5-C 10a carbocyclic group unsubstituted or substituted with at least one R 60 C1-C 10a heterocyclic group unsubstituted or substituted with at least one R 60 .

[0204] b10, b20, b30, b40, and b50 in Formula 1 can each independently be an integer of 0 to 10.

[0205] R 10a may be:

[0206] deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, or hydrazone;

[0207] unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbocyclic group, C1-C 60 heterocyclic group, C6-C 60 aryloxy group, C6-C 60 arylthio group, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11-P(=O)(Q) 11 (Q) 12 C1-C or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkoxy;

[0208] All are unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 C3-C or any combination thereof 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy or C6-C 60 aryl thiols; or

[0209] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ),and

[0210] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q33 each independently can be: hydrogen; deuterium; -F; -CI; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 alkyl; C2-C 60 alkenyl; C2-C 60 alkynyl; C1-C 60 alkoxy; or none, or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C1-C 60 alkoxy, phenyl, biphenyl, or any combination thereof; C3-C 60 carbocyclyl, or C1-C 60 heterocyclyl.

[0211] According to one or more embodiments, Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 each independently can be hydrogen, deuterium, -F, -CI, -Br, -I, cyano, C1-C 20 alkyl, or C1-C 20 alkoxy;

[0212] each substituted with deuterium, -F, -CI, -Br, -I, -CDH2, -CD2H, -CD3, cyano, phenyl, biphenyl, or any combination thereof; C1-C 20 alkyl, C1-C 20 alkoxy, or C3-C 10 cycloalkyl;

[0213] cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, Peryl, pentaphenyl, pyrrolyl, thiophenyl, furanyl, thiophenyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoindoleyl, indazoleyl, purinyl, quinolinyl, isoquinolinyl, benzo[quinolinyl], benzo[isoquinolinyl], phthalazinyl, naphthidyl, quinoxalinyl, benzo[quinoxalinyl], quinazolinyl, benzo[quinoxalinyl], phenanthridyl, acridineyl, phenanthrololinyl, phenazinyl, benzimidazolyl, benzo[furanyl], benzo[thiophenyl], benzo[thiophenyl], benzo[thiazolyl], benzo[isothiazolyl], benzo[oxazolyl], benzo[isooxazolyl] Triazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazinyl, carbazoleyl, dibenzofuranyl, dibenzothiophenyl, dibenzothiophenyl, benzocarbazoleyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazoleyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphidyl, azafluorenyl, azaspirodifluorenyl, azacarbazoleyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indolepyrrolyl, indolopyrrolyl, indolecarbazoleyl or indolocarbazoleyl;

[0214] All are substituted with deuterium, -F, -Cl, -Br, -I, -CDH2, -CD2H, -CD3, cyano, C1-C 20 Alkyl, C1-C 20 Alkoxy, C3-C 10 Cycloalkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, cyclopentadienyl, indene, naphthyl, chamomilecycloyl, indaneyl, acenaphthel, fluorenyl, spirodifluorenyl, benzo[9,10]fluorenyl, dibenzo[9,10]fluorenyl, pyrene, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenoxazinyl, phenothiazinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzothiazolyl, benzoisothiazolyl, benzoxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazinyl, carbazolyl, diphenfuranyl, diphenylthiophenyl, diphenylthiazolyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiazolyl, diphenylcarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiazolyl, imidazopyridinyl, imidazopyrimidinyl, oxazolopyridinyl, thiazolopyridinyl, benzonaphthyridinyl, azafuranyl, azaspirodi furanyl, azacarbazolyl, azadiphenfuranyl, azadiphenylthiophenyl, azadiphenylthiazolyl, indolopyrrolyl, indolopyrrolyl, indolocarbazolyl, indolocarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)(Q 31 ), -S(=O)2(Q 31 ), -P(=O)(Q 31 )(Q 32 ), -P(=S)(Q 31 )(Q 32 ), or any combination thereof. Peryl, pentaphenyl, pyrrolyl, thiophenyl, furanyl, thiophenyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoindoleyl, indazoleyl, purinyl, quinolinyl, isoquinolinyl, benzo[quinolinyl], benzo[isoquinolinyl], phthalazinyl, naphthidyl, quinoxalinyl, benzo[quinoxalinyl], quinazolinyl, benzo[quinoxalinyl], phenanthrinyl, acridineyl, phenanthrololinyl, phenazinyl, benzimidazolyl, benzo[furanyl], benzo[thiophene], benzo[thiophene], benzo[thiazolyl], benzo[isothiazolyl], benzo[oxazolyl], benzo[isooxazolyl], tri... Azolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazinyl, carbazoleyl, dibenzofuranyl, dibenzothiophenyl, dinaphthothiophenyl, benzocarbazoleyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazoleyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolpyridyl, thiazopyridyl, benzonaphidyl, azafluorenyl, azaspirodifluorenyl, azacarbazoleyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indolepyrrolyl, indolopyrrolyl, indolecarbazoleyl or indolocarbazoleyl; or

[0215] -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2) or -P(=S)(Q1)(Q2).

[0216] According to one or more embodiments, Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R 50 Each of these can be independently: hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, C1-C 20 Alkyl or C1-C 20 Alkoxy;

[0217] All C1-C atoms are substituted with deuterium, -F, -Cl, -Br, -I, cyano, phenyl, biphenyl, or any combination thereof. 20 Alkyl or C1-C 20 alkoxy; or

[0218] A group selected from one of Formulas 5-1 to 5-26, 6-1 to 6-55, and 7-1 to 7-5:

[0219]

[0220]

[0221]

[0222]

[0223] Among them, in equations 5-1 to 5-26, equations 6-1 to 6-55, and equations 7-1 to 7-5,

[0224] Y 31 and Y 32 Each of these can be independently O, S, C (Z) 33 (Z) 34 ), N(Z 33 ) or Si(Z 33 (Z) 34 ),

[0225] Z 31 To Z 34 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C2-C 20 alkenyl, C2-C 20 Alkyne group, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, phenanthryl, anthraceneyl, benzo[9,10]phenanthryl, pyridyl, pyrimidinyl, carbazoleyl, and triazineyl.

[0226] e2 can be 1 or 2.

[0227] e3 can be an integer from 1 to 3.

[0228] e4 can be an integer from 1 to 4.

[0229] e5 can be an integer from 1 to 5.

[0230] e6 can be an integer from 1 to 6.

[0231] e7 can be an integer from 1 to 7.

[0232] e9 can be an integer from 1 to 9.

[0233] e11 can be an integer from 1 to 11, and

[0234] * indicates a bonding site with an adjacent atom.

[0235] According to one or more embodiments, the components selected are Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R50 Two or more adjacent groups may optionally combine with each other to form either unsubstituted or substituted groups with at least one R. 10a The cyclopentyl group, cyclohexyl group, cycloheptyl group, phenyl group, naphthyl group, fluorene group or carbazole group.

[0236] According to one or more embodiments, the components selected are Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R 50 Two or more adjacent groups may optionally combine with each other to form a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a phenyl group, a naphthyl group, a fluorene group, or a carbazole group, or

[0237] All are substituted with cyclopentyl, cyclohexyl, cycloheptyl, phenyl, naphthyl, fluorene, or carbazole groups, which are substituted with deuterium, -F, -Cl, -Br, -I, cyano, phenyl, biphenyl, or any combination thereof.

[0238] According to one or more embodiments, Ar1 may be selected from groups represented by formulas 7-1 to 7-5.

[0239] According to one or more embodiments, the organometallic compound represented by Formula 1 can be a compound represented by Formula 1-1 or Formula 1-2:

[0240] Equation 1-1

[0241]

[0242] Formula 1-2

[0243]

[0244] Among them, in Equations 1-1 and 1-2,

[0245] M1, Ar1, L 11 L 12 X1 and X2 are the same as those described herein.

[0246] X 11 It can be C(R) 11 ) or N, X 12 It can be C(R) 12 ) or N, X 13 It can be C(R) 13 ) or N, X 14 It can be C(R) 14 ) or N,

[0247] X 21 It can be C(R)21 ) or N, X 22 may be C(R 22 ) or N, X 23 may be C(R 23 ) or N, X 24 may be C(R 24 ) or N,

[0248] X 31 may be C(R 31 ) or N, X 32 may be C(R 32 ) or N, X 33 may be C(R 33 ) or N, X 34 may be C(R 34 ) or N, X 35 may be C(R 35 ) or N, X 36 may be C(R 36 ) or N,

[0249] X 41 may be C(R 41 ) or N, X 42 may be C(R 42 ) or N, X 43 may be C(R 43 ) or N,

[0250] X 51 may be C(R 51 ) or N, X 52 may be C(R 52 ) or N, X 53 may be C(R 53 ) or N, X 54 may be C(R 54 ) or N,

[0251] R 11 through R 14 may each independently be the same as described with respect to R 10 ,

[0252] R 21 through R 24 may each independently be the same as described with respect to R 20 ,

[0253] R 31 through R 36 may each independently be the same as described with respect to R 30 ,

[0254] R 41 through R 43They can all be independently related to R 40 The descriptions are the same.

[0255] R 51 To R 54 They can all be independently related to R 50 The descriptions are the same, and

[0256] Selected from Ar1, R1, R2, R3, R 11 To R 14 R 21 To R 24 R 31 To R 36 R 41 To R 43 and R 51 To R 54 Two or more adjacent groups may optionally combine with each other to form an unsubstituted or substituted group with at least one R. 10a C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group.

[0257] According to one or more embodiments, the organometallic compound represented by Formula 1 can be a compound represented by Formula 1A or Formula 1B:

[0258] Formula 1A

[0259]

[0260] Formula 1B

[0261]

[0262] Among them, in Equation 1A and Equation 1B,

[0263] M1, L 12 X1 and X2 can both be the same as those described herein.

[0264] X 11 It can be C(R) 11 ) or N, X 12 It can be C(R) 12 ) or N, X 13 It can be C(R) 13 ) or N, X 14 It can be C(R) 14 ) or N,

[0265] X 21 It can be C(R) 21 ) or N, X 22 It can be C(R) 22) or N, X 23 may be C(R 23 ) or N, X 24 may be C(R 24 ) or N,

[0266] X 31 may be C(R 31 ) or N, X 32 may be C(R 32 ) or N, X 33 may be C(R 33 ) or N, X 34 may be C(R 34 ) or N, X 35 may be C(R 35 ) or N, X 36 may be C(R 36 ) or N,

[0267] X 41 may be C(R 41 ) or N, X 42 may be C(R 42 ) or N, X 43 may be C(R 43 ) or N,

[0268] X 51 may be C(R 51 ) or N, X 52 may be C(R 52 ) or N, X 53 may be C(R 53 ) or N, X 54 may be C(R 54 ) or N,

[0269] R 11 through R 14 may each independently be the same as described with respect to R 10 ,

[0270] R 21 through R 24 may each independently be the same as described with respect to R 20 ,

[0271] R 31 through R 36 may each independently be the same as described with respect to R 30 ,

[0272] R 41 through R 43 may each independently be the same as described with respect to R 40 ,

[0273] R51 To R 54 They can all be independently related to R 50 The descriptions are the same, and

[0274] R 10b R 10c and R 10d They can all be independently related to R 10a The descriptions are the same.

[0275] n3 can be an integer from 0 to 3.

[0276] n4 can be an integer from 0 to 4.

[0277] n5 can be an integer from 0 to 5, and

[0278] Selected from R 10b R 10c R 10d R1, R2, R3, R 11 To R 14 R 21 To R 24 R 31 To R 36 R 41 To R 43 and R 51 To R 54 Two or more adjacent groups may optionally combine with each other to form an unsubstituted or substituted group with at least one R. 10a C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group.

[0279] According to one or more embodiments, the organometallic compound represented by Formula 1 can be one of compounds 1 to 96 (e.g., any one of compounds 1 to 96):

[0280]

[0281]

[0282]

[0283]

[0284]

[0285]

[0286]

[0287]

[0288] Ar in Compound 49 to Compound 96 represents a bonding site to an adjacent atom.

[0289] The organometallic compound represented by Formula 1 can include a pyrimidine or a triazine substituted with an N-carbazole. Due to such a structure, the possibility of intramolecular hydrogen bonding is increased, such that the structural stability of the organometallic compound is improved. In addition, due to a structure that maximizes or enhances the volume of the molecule, intermolecular interactions are inhibited or reduced, whereby Dexter energy transfer (DET) can be inhibited or reduced. Accordingly, the luminous efficiency, color purity, and structural stability of the organometallic compound can be improved.

[0290] Accordingly, if (for example, when) the organometallic compound represented by Formula 1 is applied to an organic light emitting device, the luminous efficiency, color purity, and lifetime characteristics of the organic light emitting device can be improved. For example, if (for example, when) an emission layer of an organic light emitting device includes the organometallic compound represented by Formula 1, an organic light emitting device that emits blue light with excellent or suitable color purity, luminous efficiency, and lifetime characteristics can be implemented.

[0291] The organometallic compound can emit blue light. For example, the organometallic compound can emit blue light having a maximum emission wavelength of about 400 nm to about 500 nm (e.g., about 430 nm to about 480 nm) (bottom emission CIE x,y The color coordinates 0.14, 0.06 to 0.25), but embodiments of the present disclosure are not limited thereto. In one or more embodiments, the organometallic compound represented by Formula 1 can be suitable for use in manufacturing an organic light emitting device that emits blue light.

[0292] In one or more embodiments, the organometallic compound can emit blue light having a maximum emission wavelength of at least about 440 nm and not more than about 475 nm.

[0293] A person of ordinary skill in the art can easily identify a synthesis method of the organometallic compound represented by Formula 1 by referring to the examples provided.

[0294] Description of Other Formulas

[0295] Formula 2

[0296]

[0297] L in Formula 2 51 to L 53 may each independently be a single bond, unsubstituted or substituted with at least one R10a C3-C 60 carbon ring group or a heterocyclic ring group which is unsubstituted or substituted with at least one R 10a C1-C 60 alkyl group, a C1-C

[0298] b51 to b53 in Formula 2 each represent the number of L 51 to L 53 , and each can be an integer of 1 to 5. If (for example, when) b51 is 2 or more, two or more of L 51 may be the same as or different from each other, if (for example, when) b52 is 2 or more, two or more of L 52 may be substantially the same as or different from each other, and if (for example, when) b53 is 2 or more, two or more of L 53 may be substantially the same as or different from each other. According to one or more embodiments, b51 to b53 can each independently be 1 or 2.

[0299] In one or more embodiments, in Formula 2, L 51 to L 53 may each independently be:

[0300] a single bond; or

[0301] each is unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, a C1-C 20 alkyl group, a C1-C 20 alkoxy group, a phenyl group, a naphthyl group, a pyridyl group, a pyrimidyl group, a triazinyl group, a fluorenyl group, a dimethylfluorenyl group, a diphenylfluorenyl group, a carbazolyl group, a phenylcarbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a dimethyldibenzosilolyl group, a diphenyldibenzosilolyl group, -O(Q 31 ), -S(Q 31 ), -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -P(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), -P(=O)(Q 31 )(Q 32 ), or any combination thereof. a group, a cyclopentadienyl group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzothiophene group, a dibenzothiophene group, a silole group, a silole group, a silole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, a benzothiadiazole group, a dibenzooxasilocyclohexadiene group, a dibenzothiasilocyclohexadiene group, a dibenzodihydroazasilocyclohexadiene group, a dibenzodihydrodisilacyclohexadiene group, a dibenzodihydrodisilacyclohexadiene group, a dibenzodioxane group, a dibenzooxathiacyclohexadiene group, a dibenzoxazine group, a dibenzopyran group, a dibenzodithiacyclohexadiene group, a dibenzothiazine group, a dibenzothiopyran group, a dibenzocyclohexadiene group, a dibenzodihydropyridine group, or a dibenzodihydropyrazine group, and

[0302] Q 31 to Q 33 may each independently be hydrogen, deuterium, a C1-C 20 alkyl group, a C1-C 20 alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, a pyridine group, a pyrimidine group, a pyridazine group, a pyrazine group, or a triazine group.

[0303] According to one or more embodiments, in Formula 2, the bond between L 51 and R 51 , the bond between L 52 and R 52 , the bond between L 53 and R 53 , the bond between two L 51 , the bond between two L 52 , the bond between two L 53 , the bond between L 51 and the carbon between X 54 and X 55 , the bond between L 52 and the carbon between X 54 and X 56 , and the bond between L 53 and the carbon between X 55 and X 56 may each be a "carbon-carbon single bond".

[0304] In Formula 2, X 54 may be N or C(R 54 ), X 55 may be N or C(R 55 ), X 56 may be N or C(R 56 ), wherein at least one of X 54 to X 56 may be N. R 54 to R 56 may each be the same as described herein. According to one or more embodiments, two or three of X 54 to X 56 may each be N.

[0305] In Formula 2, R 51 to R 56 may each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C1-C 60 alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 alkoxy, unsubstituted or substituted with at least one R 10a C3-C 60 carbocyclyl, unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclyl, unsubstituted or substituted with at least one R 10a C6-C 60 aryloxy, unsubstituted or substituted with at least one R 10a C6-C 60 arylthio, unsubstituted or substituted with at least one R 10a C7-C 60 arylalkyl, unsubstituted or substituted with at least one R 10a C2-C 60 heteroarylalkyl, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), or -P(=O)(Q1)(Q2). Q1to Q3may each be the same as described herein.

[0306] In one or more embodiments, in Formula 2, R 51to R 56 may each independently be:

[0307] hydrogen, deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 alkyl, or C1-C 20 alkoxy;

[0308] each substituted with deuterium, -F, -CI, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidyl, or any combination thereof; 20 alkyl, or C1-C 20 alkoxy;

[0309] each unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 20 alkyl, C1-C 20 alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C 10 alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyryl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalyl, quinazolyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothiazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 ), -S(Q 31 ), -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -P(Q 31 )(Q 32 ), -C(=O)(Q31 ), -S(=0)2(Q 31 ), -P(=0)(Q 31 )(Q 32 ) or any combination thereof, and 10 cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (Ci-C 31 alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyryl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzoisothiazolyl, benzoxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothienyl, azafuorenyl, azadibenzosilolyl, or a group represented by Formula 91; or

[0310] -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=0)(Q1), -S(=0)2(Q1), or -P(=0)(Q1)(Q2), and

[0311] Q1to Q3and Q 31 to Q 33 may each independently be:

[0312] -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H, or -CD2CDH2; or

[0313] each unsubstituted or substituted with deuterium, C1-C 10 alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof.

[0314] Formula 91

[0315]

[0316] wherein, in formula 91,

[0317] ring CY 91 and ring CY 92 may each independently be a C5-C 10a carbocyclyl group that is unsubstituted or substituted with at least one R 30 or a C1-C 10a heterocyclyl group that is unsubstituted or substituted with at least one R 30 ,

[0318] X 91 may be a single bond, O, S, N(R 91 ), B(R 91 ), C(R 91a )(R 91b ), or Si(R 91a )(R 91b ), R 91 , R 91a , and R 91b may each be the same as described with respect to R 82 , R 82a , and R 82b ,

[0319] R 10a may be the same as described herein, and

[0320] * indicates a bonding site to an adjacent atom.

[0321] For example, in one or more embodiments, in formula 91,

[0322] ring CY 91 and ring CY 92 may each independently be a phenyl group, a pyridyl group, a pyrimidyl group, a pyrazinyl group, a pyridazinyl group, or a triazinyl group that is unsubstituted or substituted with at least one R 10a , and

[0323] R 91 , R 91a , and R 91b may each independently be:

[0324] hydrogen or C1-C 10 alkyl; or

[0325] phenyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, or triazinyl that is unsubstituted or substituted with deuterium, C1-C 10 alkyl, phenyl, biphenyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof.

[0326] In one or more embodiments, in formula 2, the group represented by *-(L 51 ) b51 -R 51 the group represented by *-(L 52 ) b52 -R 52 the group represented by *-(L 51 ) b51 -R 51 the group represented by *-(L 52 ) b52 -R 52 the group represented by *-(L 51 ) b51 -R 51 the group represented by *-(L 52 ) b52 -R 52 the group represented by *-(L 51 52 In one or more embodiments, in formula 2, b51 and b52 can each be 1, 2, or 3, and L 10a and L 51 may each independently be a phenyl group, a pyridyl group, a pyrimidyl group, a pyridazyl group, a pyrazyl group, or a triazyl group, each unsubstituted or substituted with at least one R 52 .

[0330] In one or more embodiments, in formula 2, R 10a and R 60 may each independently be a C3-C 10a carbocyclyl unsubstituted or substituted with at least one R 60 , a C1-C 10a heterocyclyl unsubstituted or substituted with at least one R 60 , a C6-C 10a aryloxy unsubstituted or substituted with at least one R 60 , a C6-C 60 arylthio unsubstituted or substituted with at least one R 60 , -C(Q1)(Q2)(Q3), or -Si(Q1)(Q2)(Q3), and

[0331] Q1 to Q3 can each independently be each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C1-C 60 alkoxy, C3-C 51 cycloalkyl, C3-C b51 heterocyclyl, C6-C 51 aryl, or C6-C 52 arylthio.C3-C of alkoxy, phenyl, biphenyl, or any combination thereof 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0332] According to one or more embodiments,

[0333] In Equation 2, the *-(L 51 ) b51 -R 51 The represented group can be a group selected from one of the formulas CY51-1 to CY51-26, and / or

[0334] In Equation 2, the *-(L 52 ) b52 -R 52 The represented group can be a group selected from one of the formulas CY52-1 to CY52-26, and / or

[0335] In Equation 2, the *-(L 53 ) b53 -R 53 The represented group can be a group selected from one of the formulas CY53-1 to CY53-27 (e.g., any one of them), -C(Q1)(Q2)(Q3) or -Si(Q1)(Q2)(Q3):

[0336]

[0337]

[0338]

[0339] Among them, in formulas CY51-1 to CY51-26, CY52-1 to CY52-26 and CY53-1 to CY53-27,

[0340] Y 63 It can be a single bond, O, S, N(R) 63 ), B(R) 63 ), C(R 63a (R) 63b ) or Si(R 63a (R) 63b ),

[0341] Y 64 It can be a single bond, O, S, N(R) 64 ), B(R) 64 ), C(R 64a (R) 64b ) or Si(R 64a (R)64b ),

[0342] Y 67 may be a single bond, O, S, N(R 67 ), B(R 67 ), C(R 67a )(R 67b ), or Si(R 67a )(R 67b ), Y 68 may be a single bond, O, S, N(R 68 ), B(R 68 ), C(R 68a )(R 68b ), or Si(R 68a )(R 68b ),

[0343] each of Y 63 and Y 64 in formulas CY51-16 and CY51-17 can not be a single bond at the same time,

[0344] each of Y 67 and Y 68 in formulas CY52-16 and CY52-17 can not be a single bond at the same time,

[0345] R 51a to R 51e , R 61 to R 64 , R 63a , R 63b , R 64a , and R 64b may each be the same as described for R 51 , where R 51a to R 51e may each not be hydrogen,

[0346] R 52a to R 52e , R 65 to R 68 , R 67a , R 67b , R 68a , and R 68b may each be the same as described for R 52 , where R 52a to R 52e may each not be hydrogen,

[0347] R 53a to R 53e , R 69a , and R 69b may each be the same as described for R 53The description is the same, wherein R 53a to R 53e may each be independently:

[0348] * indicates a bonding site to an adjacent atom.

[0349] According to one or more embodiments,

[0350] In Formula CY51-1 to CY51-26 and Formula CY52-1 to CY52-26, R 51a to R 51e and R 52a to R 52e may each be independently:

[0351] each unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 20 alkyl, C1-C 20 alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C 10 alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyryl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalyl, quinazolyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzoisothiazolyl, benzoxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, or any combination thereof, 10 alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyryl, alkyl, pyrrolyl, thiophenyl, furanyl, imidazoleyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindoleyl, indoleyl, inzolyl, purineyl, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cenolinyl, carbazoleyl, phenanthrololinyl, benzimidazoleyl, benzofuranyl, benzothiopheneyl Benzisothiazolyl, benzoxazolyl, benzoisothiazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolel, dibenzocarbazolel, imidazopyridyl, imidazopyrimidinyl, azacarbazolel, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiophenyl or a group represented by Formula 91; or

[0352] -C(Q1)(Q2)(Q3) or -Si(Q1)(Q2)(Q3),

[0353] Q1 to Q3 can all be independently unsubstituted or substituted with deuterium, C1-C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof, phenyl, naphthyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, or triazinyl.

[0354] In equations CY51-16 and CY51-17, i)Y 63 It can be O or S, and Y 64 It can be Si(R) 64a (R) 64b ) ; or ii) Y 63 It can be Si(R) 63a (R) 63b ), and Y 64 It can be O or S, and

[0355] In equations CY52-16 and CY52-17, i)Y 67 It can be O or S, and Y 68 It can be Si(R) 68a (R) 68b ) ; or ii) Y 67 It can be Si(R) 67a (R) 67b ), and Y 68 It can be O or S.

[0356] According to one or more embodiments, the second compound represented by Formula 2 may include (e.g., is) at least one (e.g., any one) selected from compounds ETH1 to ETH32:

[0357]

[0358]

[0359] Formula 3

[0360]

[0361] In Formula 3, ring CY 71 and ring CY 72 may each independently be a π-electron rich C3-C 60 cycloalkyl group or a pyridyl group.

[0362] In Formula 3, X 71 may be a single bond or a linker including O, S, N, B, C, Si, or any combination thereof.

[0363] In Formula 3, * indicates a bonding site to an atom included in a remaining moiety of the third compound other than the group represented by Formula 3.

[0364] Formula 3-1

[0365]

[0366] Formula 3-2

[0367]

[0368] Formula 3-3

[0369]

[0370] Formula 3-4

[0371]

[0372] Formula 3-5

[0373]

[0374] In Formula 3-1 to Formula 3-5, ring CY 71 to ring CY 74 may each independently be a π-electron rich C3-C 60 cycloalkyl group or a pyridyl group.

[0375] In Formula 3-1 to Formula 3-5, X 82 may be a single bond, O, S, N[(L 82 ) b82 -R 82 ], C(R 82a )(R 82b ), or Si(R 82a )(R 82b ).

[0376] In Formula 3-1 to Formula 3-5, X 83 may be a single bond, O, S, N[(L 83 ) b83 -R 83 ], C(R 83a )(R 83b ) or Si(R 83a )(R 83b ).

[0377] In Formula 3-2 and Formula 3-4, X 84 may be O, S, N[(L 84 ) b84 -R 84 ], C(R 84a )(R 84b ) or Si(R 84a )(R 84b ).

[0378] In Formula 3-5, X 85 may be C or Si.

[0379] In Formula 3-1 to Formula 3-5, L 81 to L 85 may each independently be a single bond, *-C(Q4)(Q5)-*, *-Si(Q4)(Q5)-*, a π-electron rich C3-C 10a cyclic group which is unsubstituted or substituted with at least one R 60 , or a pyridine group which is unsubstituted or substituted with at least one R 10a .

[0380] Q4and Q5are each the same as described with respect to Q1.

[0381] In Formula 3-1 to Formula 3-5, b81to b85may each independently be an integer of 1 to 5.

[0382] In Formula 3-1 to Formula 3-5, R 71 to R 74 , R 81 to R 85 , R 82a , R 82b , R 83a , R 83b , R 84a and R 84b are each the same as described herein.

[0383] In Formula 3-1 to Formula 3-5, a71to a74respectively represent the number of R 71 to the number of R 74 , and can each independently be an integer of 0 to 20. If (for example, when) a71is 2 or more, then R71 Two or more of them can be the same or different from each other, and if (for example, when) a72 is 2 or greater, then R 72 Two or more of them can be the same or different from each other, and if (for example, when) a73 is 2 or greater, then R 73 Two or more of them can be the same as or different from each other, and if (for example, when) a74 is 2 or greater, then R 74 Two or more of them can be substantially the same or different from each other. In one or more embodiments, a71 to a74 can each be an integer from 0 to 8 independently.

[0384] R 10a It can be the same as described here.

[0385] In equations 3-1 to 3-5, L 81 To L 85 They can all be independently:

[0386] Single key; or

[0387] *-C(Q4)(Q5)-*' or *-Si(Q4)(Q5)-*'; or

[0388] All are unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, naphthyl, pyridyl, pyrimidinyl, triazine, fluorenyl, dimethylfluorenyl, diphenylfluorenyl, carbazole, phenylcarbazole, dibenzofuranyl, dibenzothiophene, dibenzothiopyrrolyl, dimethyldibenzothiopyrrolyl, diphenyldibenzothiopyrrolyl, -O(Q) 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -P(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 -P(=O)(Q) 31 (Q) 32 ) or any combination thereof, including phenyl groups, naphthyl groups, anthracene groups, phenanthrene groups, benzo[9,10]phenanthrene groups, pyrene groups, a group represented by one (e.g., any one) selected from the group consisting of Formula CY71-1(1) to CY71-1(8), and / or

[0389] Q4, Q5, and Q 31 to Q 33 may each independently be hydrogen, deuterium, C1-C 20 alkyl, C1-C 20 alkoxy, phenyl, biphenyl, terphenyl, pyridyl, pyrimidyl, pyridazyl, pyrazinyl, or triazinyl.

[0390] In one or more embodiments, the group represented by in Formula 3-1 and Formula 3-2 can be a group represented by one (e.g., any one) selected from the group consisting of Formula CY71-1(1) to CY71-1(8), and / or

[0391] the group represented by in Formula 3-1 and Formula 3-3 can be a group represented by one (e.g., any one) selected from the group consisting of Formula CY71-2(1) to CY71-2(8), and / or

[0392] the group represented by in Formula 3-2 and Formula 3-4 can be a group represented by one (e.g., any one) selected from the group consisting of Formula CY71-3(1) to CY71-3(32), and / or

[0393] the group represented by in Formula 3-3 to Formula 3-5 can be a group represented by one (e.g., any one) selected from the group consisting of Formula CY71-4(1) to CY71-4(32), and / or

[0394] the group represented by in Formula 3-5 can be a group represented by one (e.g., any one) selected from the group consisting of Formula CY71-5(1) to CY71-5(8):

[0395]

[0396]

[0397]

[0398]

[0399]

[0400] Among them, in formulas CY71-1(1) to CY71-1(8), CY71-2(1) to CY71-2(8), CY71-3(1) to CY71-3(32), CY71-4(1) to CY71-4(32) and CY71-5(1) to CY71-5(8),

[0401] X 81 To X 85 L 81 b81, R 81 and R 85 All can be the same as described here.

[0402] X 86 It can be a single bond, O, S, N(R) 86 ), B(R) 86 ), C(R 86a (R) 86b ) or Si(R 86a (R) 86b ), X 87 It can be a single bond, O, S, N(R) 87 ), B(R) 87 ), C(R 87a (R) 87b ) or Si(R 87a (R) 87b ),

[0403] X in equations CY71-1(1) to CY71-1(8) and equations CY71-4(1) to CY71-4(32) 86 and X 87 Each element in the set can be a single bond at different times.

[0404] X 88 It can be a single bond, O, S, N(R) 88 ), B(R) 88 ), C(R 88a (R) 88b ) or Si(R 88a (R) 88b ), X89 may be a single bond, O, S, N(R 89 ), B(R 89 ), C(R 89a )(R 89b ), or Si(R 89a )(R 89b ),

[0405] each of X 88 and X 89 in formula CY71-2(1) to formula CY71-2(8), formula CY71-3(1) to formula CY71-3(32), and formula CY71-5(1) to formula CY71-5(8) can not be a single bond at the same time, and

[0406] R 86 to R 89 , R 86a , R 86b , R 87a , R 87b , R 88a , R 88b , R 89a , and R 89b may each be the same as described with respect to R 81 .

[0407] According to one or more embodiments, the third compound including a group represented by formula 3 can include (e.g., be) at least one (e.g., any one) selected from the group consisting of compound HTH1 to compound HTH40:

[0408]

[0409]

[0410] formula 502

[0411]

[0412] formula 503

[0413]

[0414] In formula 502 and formula 503, ring A 501 to ring A 504 may each independently be a C3-C 60 carbocyclyl or a C1-C 60 heterocyclyl.

[0415] In formula 502 and formula 503, Y 505 may be O, S, N(R 505 ), B(R 505 ), C(R505a ) or Si(R 505b ) (R 505a ) (R 505b ).

[0416] In Formula 502 and Formula 503, Y 506 may be O, S, N(R 506 ), B(R 506 ), C(R 506a )(R 506b ), or Si(R 506a )(R 506b ).

[0417] In Formula 503, Y 507 may be O, S, N(R 507 ), B(R 507 ), C(R 507a )(R 507b ), or Si(R 507a )(R 507b ).

[0418] In Formula 503, Y 508 may be O, S, N(R 508 ), B(R 508 ), C(R 508a )(R 508b ), or Si(R 508a )(R 508b ).

[0419] In Formula 502 and Formula 503, Y 51 and Y 52 may each independently be B, P(=O), or S(=O).

[0420] In Formula 502 and Formula 503, R 500a , R 500b , R 501 to R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a , and R 508b are each the same as described herein.

[0421] In Formula 502 and Formula 503, a501to a504represent the number of R 501 to the number of R 504 , respectively, and can each independently be an integer of 0 to 20. If (for example, when) a501is 2 or more, R 501two or more of R 502 two or more of R 503 two or more of R 504 two or more of R

[0422] According to one or more embodiments, the fourth compound represented by Formula 502 or Formula 503 can include (e.g., be) at least one (e.g., any one) selected from the group consisting of Compound DFD1 to Compound DFD29:

[0423]

[0424]

[0425]

[0426] R 51 to R 56 , R 71 to R 74 , R 81 to R 85 , R 82a , R 82b , R 83a , R 83b , R 84a , R 84b , R 500a , R 500b , R 501 to R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a and R 508b may each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an unsubstituted or substituted C1-C 10a alkyl group having at least one R 60 , an unsubstituted or substituted C2-C 10a alkenyl group having at least one R 60 , an unsubstituted or substituted C2-C 10a alkynyl group having at least one R 60alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 alkoxy, unsubstituted or substituted with at least one R 10a C3-C 60 carbon ring group, unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclic group, unsubstituted or substituted with at least one R 10a C6-C 60 aryloxy, unsubstituted or substituted with at least one R 10a C6-C 60 arylthio, unsubstituted or substituted with at least one R 10a C7-C 60 arylalkyl, unsubstituted or substituted with at least one R 10a C2-C 60 heteroarylalkyl, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), or -P(=O)(Q1)(Q2). Q1to Q3may each be the same as described herein.

[0427] According to one or more embodiments, i) R 51 to R 56 , R 71 to R 74 , R 81 to R 85 , R 82a , R 82b , R 83a , R 83b , R 84a , R 84b , R 500a , R 500b , R 501 to R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a and R 508b and ii) R 10a may each independently be:

[0428] hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 alkyl, or C1-C 20 alkoxy;

[0429] each independently unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidyl, or any combination thereof; 20 alkyl or C1-C 20 alkoxy;

[0430] each independently unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 20 alkyl, C1-C 20 alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C 10 alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyryl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothiazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 ), -S(Q 31 ), -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -P(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), -P(=O)(Q 31 )(Q 32cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C 10 alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthryl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzoisothiophenyl, benzoxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafuorenyl, azadibenzosilolyl, or a group represented by Formula 91; or

[0431] -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), or -P(=O)(Q1)(Q2), and

[0432] Q1to Q3and Q 31 to Q 33 may each independently be:

[0433] -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H, or -CD2CDH2; or

[0434] each unsubstituted or substituted with deuterium, C1-C 10 alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof.

[0435] According to one or more embodiments, i) R 51 to R 56 , R 71 to R 74 to R, R 81 to R 85 , R 82a , R 82b , R 83a , R 83b , R 84a , R 84b , R 500a , R 500b , R 501 to R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a and R 508b and ii) R 10a may each independently be:

[0436] hydrogen, deuterium, -F, cyano, nitro, -CH3, -CD3, -CD2H, -CDH2, -CF3, -CF2H, or -CFH2;

[0437] a group represented by one (e.g., any one) selected from the group consisting of formulae 9-1 to 9-19; or

[0438] a group represented by one (e.g., any one) selected from the group consisting of formulae 10-1 to 10-246, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), or -P(=O)(Q1)(Q2)(wherein Q1to Q3are the same as described herein):

[0439]

[0440]

[0441]

[0442]

[0443]

[0444]

[0445] wherein in formulae 9-1 to 9-19 and formulae 10-1 to 10-246, * represents a bonding site to an adjacent atom, “Ph” represents a phenyl group, “D” represents deuterium, and “TMS” represents a trimethylsilyl group.

[0446] Figure 1 Description of

[0447] Figure 1 is a schematic cross-sectional view of a light emitting device 10 according to one or more embodiments of the present disclosure. The light emitting device 10 can include a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0448] Hereinafter, a structure of the light emitting device 10 and a method of manufacturing the light emitting device 10 according to one or more embodiments will be described in more detail. Figure 1

[0449] The first electrode 110

[0450] In Figure 1 In one or more embodiments, a substrate can be additionally provided and disposed under the first electrode 110 and / or on the second electrode 150. As the substrate, a glass substrate or a plastic substrate can be used. According to one or more embodiments, the substrate can be a flexible substrate, and can include a plastic (such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof) having excellent or suitable heat resistance and durability.

[0451] The first electrode 110 can be formed by, for example, depositing or sputtering a material for forming the first electrode 110 on the substrate. When the first electrode 110 is an anode, the material for forming the first electrode 110 can be a high work function material that facilitates injection of holes.

[0452] The first electrode 110 can be a reflective electrode, a transreflective electrode, or a transmissive electrode. In one or more embodiments, if (for example, when) the first electrode 110 is a transmissive electrode, the material for forming the first electrode 110 can include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof. According to one or more embodiments, if (for example, when) the first electrode 110 is a transreflective electrode or a reflective electrode, the material for forming the first electrode 110 can include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof.

[0453] The first electrode 110 can have a single layer structure including (for example, consisting of) a single layer or a multi-layer structure including a plurality of layers. According to one or more embodiments, the first electrode 110 can have a three-layer structure of ITO / Ag / ITO.

[0454] The intermediate layer 130

[0455] ​The intermediate layer 130 can be disposed over (e.g., on) the first electrode 110. The intermediate layer 130 can include an emission layer.

[0456] The intermediate layer 130 can also include a hole transport region between the first electrode 110 and the emission layer and an electron transport region between the emission layer and the second electrode 150.

[0457] In one or more embodiments, the intermediate layer 130 can include a metal-containing compound (such as an organometallic compound, e.g., an organometallic compound represented by Formula 1) and / or an inorganic material (such as a quantum dot), etc., in addition to one or more suitable organic materials.

[0458] According to one or more embodiments, the intermediate layer 130 can include: i) two or more emission units sequentially stacked between the first electrode 110 and the second electrode 150; and ii) a charge generation layer between the two or more emission units. When the intermediate layer 130 includes two or more emission units as described herein and a charge generation layer, the light-emitting device 10 can be a tandem light-emitting device.

[0459] Hole transport region in the intermediate layer 130

[0460] The hole transport region can have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material; ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of materials different from each other; or iii) a multi-layer structure including a plurality of layers including a plurality of materials different from each other.

[0461] The hole transport region can include a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer, or any combination thereof.

[0462] For example, in one or more embodiments, the hole transport region can have a multi-layer structure including a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission auxiliary layer structure, a hole injection layer / emission auxiliary layer structure, a hole transport layer / emission auxiliary layer structure, or a hole injection layer / hole transport layer / electron blocking layer structure, where the constituent layers in each structure are sequentially stacked in the order stated from the first electrode 110.

[0463] In one or more embodiments, the hole transport region can include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0464] Formula 201

[0465]

[0466] Formula 202

[0467]

[0468] Among them, in equations 201 and 202,

[0469] L 201 To L 204 They can all be independently unsubstituted or substituted with at least one R. 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group,

[0470] L 205 It can be *-O-*', *-S-*', or *-N(Q) 201 )-*', unsubstituted or substituted with at least one R 10a C1-C 20 Alkylene, unsubstituted or substituted with at least one R 10a C2-C 20 alkenyl, unsubstituted or substituted with at least one R 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group,

[0471] xa1 to xa4 can each be an independent integer from 0 to 5.

[0472] xa5 can be an integer from 1 to 10.

[0473] R 201 To R 204 and Q 201 They can all be independently unsubstituted or substituted with at least one R. 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group,

[0474] R 201 and R 202 It may optionally be via a single bond, unsubstituted or substituted, having at least one R 10a C1-C5 alkylene groups, either unsubstituted or substituted, have at least one R 10a The C2-C5 alkenyl groups are linked together to form unsubstituted or substituted groups with at least one R group. 10a C8-C 60polycyclic group (e.g., a carbazole group, etc.) (e.g., see compound HT16),

[0475] R 203 and R 204 may be optionally connected to each other via a single bond, a C1-C5 alkylene group unsubstituted or substituted with at least one R 10a , or a C2-C5 alkenylene group unsubstituted or substituted with at least one R 10a , to form a C8-C 10a polycyclic group unsubstituted or substituted with at least one R 60 , and

[0476] na1may be an integer of 1 to 4.

[0477] According to one or more embodiments, each of Formula 201 and Formula 202 can include at least one selected from groups represented by Formula CY201 to Formula CY217:

[0478]

[0479] wherein, in Formula CY201 to Formula CY217, R 10b and R 10c may each be the same as described with respect to R 10a , ring CY 201 to ring CY 204 may each independently be a C3-C 20 carbocyclic group or a C1-C 20 heterocyclic group, and at least one hydrogen in Formula CY201 to Formula CY217 can be unsubstituted or substituted with R 10a .

[0480] According to one or more embodiments, ring CY 201 to ring CY 204 in Formula CY201 to Formula CY217 can each independently be a phenyl group, a naphthyl group, a phenanthryl group, or an anthryl group.

[0481] According to one or more embodiments, each of Formula 201 and Formula 202 can include at least one selected from groups represented by Formula CY201 to Formula CY203.

[0482] According to one or more embodiments, Formula 201 can include at least one selected from groups represented by Formula CY201 to Formula CY203 and at least one selected from groups represented by Formula CY204 to Formula CY217.

[0483] According to one or more embodiments, in Formula 201, xa1may be 1, R 201may be a group represented by any one selected from the group consisting of Formula CY201 to Formula CY203, xa2may be 0, R 202 may be a group represented by any one selected from the group consisting of Formula CY204 to Formula CY207.

[0484] According to one or more embodiments, each of Formula 201 and Formula 202 can not include (e.g., can exclude) any of the groups represented by Formula CY201 to Formula CY203.

[0485] According to one or more embodiments, each of Formula 201 and Formula 202 can not include (e.g., can exclude) any of the groups represented by Formula CY201 to Formula CY203, and can include at least one selected from the group consisting of the groups represented by Formula CY204 to Formula CY217.

[0486] According to one or more embodiments, each of Formula 201 and Formula 202 can not include (e.g., can exclude) any of the groups represented by Formula CY201 to Formula CY217.

[0487] According to one or more embodiments, the hole transport region can include at least one selected from the group consisting of Compound HT1 to Compound HT46, 4,4',4"-[tris(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), 4,4',4"-tris(N,N-diphenylamino)triphenylamine (TDATA), 4,4',4"-tris[N-(2-naphthyl)-N-phenylamino]triphenylamine (2-TNATA), N,N'-di(naphthalen-1-yl)-N,N'-diphenyl-benzidine (NPB (NPD)), β-NPB, N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD), spiro-TPD, spiro-NPB, methylated NPB, 4,4'-cyclohexylidene-bis[N,N-bis(4-methylphenyl)benzenamine] (TAPC), 4,4'-bis[N,N'-(3-methylphenyl)amino]-3,3'-dimethylbiphenyl (HMTPD), 4,4',4"-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphor sulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), or any combination thereof:

[0488]

[0489]

[0490]

[0491]

[0492]

[0493] The thickness of the hole transport region can be about to about For example, about to about When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer can be about to about For example, about to about The thickness of the hole transport layer can be about to about For example, about to about When the thickness of the hole transport region, the hole injection layer, and the hole transport layer is within the above ranges, satisfactory hole transport properties can be obtained without significantly increasing the driving voltage.

[0494] The emission auxiliary layer can increase light emission efficiency by compensating for an optical resonance distance according to a wavelength of light emitted by the emission layer, and the electron blocking layer can block leakage of electrons from the emission layer to the hole transport region. Materials that can be included in the hole transport region can be included in the emission auxiliary layer and the electron blocking layer.

[0495] p-dopant

[0496] In one or more embodiments, the hole transport region can include a charge generating material for improving the conductive properties, in addition to one or more of these aforementioned materials. The charge generating material can be dispersed (e.g., in the form of a single layer including (e.g., consisting of) the charge generating material) uniformly (e.g., substantially uniformly) or non-uniformly in the hole transport region.

[0497] The charge generating material can be, for example, a p-dopant.

[0498] For example, in one or more embodiments, the LUMO energy level of the p-dopant can be less than or equal to -3.5 eV.

[0499] According to one or more embodiments, the p-dopant can include a quinone derivative, a cyano-containing compound, a compound including element EL1 and element EL2, or any combination thereof.

[0500] Non-limiting examples of quinone derivatives can include tetracyanoquinodimethane (TCNQ) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ).

[0501] Non-limiting examples of cyano-containing compounds can include dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexanitrile (HAT-CN) and a compound represented by Formula 221.

[0502]

[0503] Formula 221

[0504]

[0505] In Formula 221,

[0506] R 221 to R 223 may each independently be C3-C 10a carbon ring group unsubstituted or substituted with at least one R 60 , or C1-C 10a heterocyclic group unsubstituted or substituted with at least one R 60 , and

[0507] At least one selected from R 221 to R 223 may each independently be C3-C 60 carbon ring group or C1-C 60 heterocyclic group each substituted with cyano; -F; -Cl; -Br; -I; C1-C 20 alkyl substituted with cyano, -F, -Cl, -Br, -I, or any combination thereof; or any combination thereof.

[0508] In a compound including element EL1 and element EL2, element EL1 can be a metal, a metalloid, and / or a (e.g., any suitable) combination thereof, and element EL2 can be a nonmetal, a metalloid, and / or a (e.g., any suitable) combination thereof.

[0509] Non-limiting examples of metals can include: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), and / or cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), and / or barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), and / or gold (Au), etc.); post-transition metals (e.g., zinc (Zn), indium (In), and / or tin (Sn), etc.); and lanthanides (e.g., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and / or lutetium (Lu), etc.).

[0510] Non-limiting examples of metalloids can include silicon (Si), antimony (Sb), and / or tellurium (Te).

[0511] Non-limiting examples of non-metals can include oxygen (O) and / or halogens (e.g., F, Cl, Br, and / or I, etc.).

[0512] Non-limiting examples of compounds comprising an element EL1 and an element EL2 can include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, and / or metal iodides, etc.), metalloid halides (e.g., metalloid fluorides, metalloid chlorides, metalloid bromides, and / or metalloid iodides, etc.), metal tellurides, or any combination thereof.

[0513] Non-limiting examples of metal oxides can include tungsten oxides (e.g., WO, W2O3, WO2, WO3, and / or W2O5, etc.), vanadium oxides (e.g., VO, V2O3, VO2, and / or V2O5, etc.), molybdenum oxides (MoO, Mo2O3, MoO2, MoO3, and / or Mo2O5, etc.), and / or rhenium oxides (e.g., ReO3, etc.).

[0514] Non-limiting examples of metal halides can include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and / or lanthanide metal halides.

[0515] Non-limiting examples of alkali metal halides can include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and / or CsI.

[0516] Non-limiting examples of alkaline earth metal halides can include BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2, and / or BaI2.

[0517] Non-limiting examples of transition metal halides can include titanium halides (e.g., TiF4, TiCl4, TiBr4, and / or TiI4, etc.), zirconium halides (e.g., ZrF4, ZrCl4, ZrBr4, and / or ZrI4, etc.), hafnium halides (e.g., HfF4, HfCl4, HfBr4, and / or HfI4, etc.), vanadium halides (e.g., VF3, VCl3, VBr3, and / or VI3, etc.), niobium halides (e.g., NbF3, NbCl3, NbBr3, and / or NbI3, etc.), tantalum halides (e.g., TaF3, TaCl3, TaBr3, and / or TaI3, etc.), chromium halides (e.g., CrF3, CrCl3, CrBr3, and / or CrI3, etc.), molybdenum halides (e.g., MoF3, MoCl3, MoBr3, and / or MoI3, etc.), tungsten halides (e.g., WF3, WCl3, WBr3, and / or WI3, etc.), manganese halides (e.g., MnF2, MnCl2, MnBr2, and / or MnI2, etc.), technetium halides (e.g., TcF2, TcCl2, TcBr2, and / or TcI2, etc.), rhenium halides (e.g., ReF2, ReCl2, ReBr2, and / or ReI2, etc.), iron(II) halides (e.g., FeF2, FeCl2, FeBr2, and / or FeI2, etc.), ruthenium halides (e.g., RuF2, RuCl2, RuBr2, and / or RuI2, etc.), osmium halides (e.g., OsF2, OsCl2, OsBr2, and / or OsI2, etc.), cobalt halides (e.g., CoF2, CoCl2, CoBr2, and / or CoI2, etc.), rhodium halides (e.g., RhF2, RhCl2, RhBr2, and / or RhI2, etc.), iridium halides (e.g., IrF2, IrCl2, IrBr2, and / or IrI2, etc.), nickel halides (e.g., NiF2, NiCl2, NiBr2, and / or NiI2, etc.), palladium halides (e.g., PdF2, PdCl2, PdBr2, and / or PdI2, etc.), platinum halides (e.g., PtF2, PtCl2, PtBr2, and / or PtI2, etc.), copper(I) halides (e.g., CuF, CuCl, CuBr, and / or CuI, etc.), silver halides (e.g., AgF, AgCl, AgBr, and / or AgI, etc.), and / or gold halides (e.g., AuF, AuCl, AuBr, and / or AuI, etc.).

[0518] Non-limiting examples of post-transition metal halides can include zinc halides (e.g., ZnF2, ZnCl2, ZnBr2, and / or ZnI2, etc.), indium halides (e.g., InI3, etc.), and / or tin halides (e.g., SnI2, etc.).

[0519] Non-limiting examples of lanthanide metal halides may include YbF, YbF2, YbF3, SmF3, YbCl, YbCl2, YbCl3, SmCl3, YbBr, YbBr2, YbBr3, SmBr3, YbI, YbI2, YbI3 and / or SmI3, etc.

[0520] Non-limiting examples of metal halide may include antimony halides (e.g., SbCl5, etc.).

[0521] Non-limiting examples of metal tellurides may include alkali metal tellurides (e.g., Li₂Te, Na₂Te, K₂Te, Rb₂Te and / or Cs₂Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe and / or BaTe, etc.), transition metal tellurides (e.g., TiTe₂, ZrTe₂, HfTe₂, V₂Te₃, Nb₂Te₃, Ta₂Te₃, Cr₂Te₃, Mo₂Te₃, W₂Te₃, MnTe, TcTe, ReTe, etc.). FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu2Te, CuTe, Ag2Te, AgTe and / or Au2Te, etc.), post-transition metal tellurides (e.g., ZnTe, etc.) and / or lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe and / or LuTe, etc.).

[0522] The emission layer in intermediate layer 130

[0523] When the light-emitting device 10 is a full-color light-emitting device, the emitting layer can be patterned as a red emitting layer, a green emitting layer, and / or a blue emitting layer according to the sub-pixels. According to one or more embodiments, the emitting layer may have a stacked structure of two or more layers selected from red, green, and blue emitting layers to emit white light (e.g., combined white light), wherein the two or more layers are in contact with or separated from each other. In one or more embodiments, the emitting layer may include two or more materials selected from red, green, and blue emitting materials to emit white light (e.g., combined white light), wherein the two or more materials are mixed with each other in a single layer.

[0524] According to one or more embodiments, the emission layer can include a host and a dopant (or emitter). According to one or more embodiments, the emission layer can include, in addition to the host and the dopant (or emitter), an auxiliary dopant that facilitates energy transfer to the dopant (or emitter). When the emission layer includes the dopant (or emitter) and the auxiliary dopant, the dopant (or emitter) and the auxiliary dopant are different from each other.

[0525] The organic metal compound represented by Formula 1 in the present disclosure can be used as a dopant (or emitter), or can be used as an auxiliary dopant.

[0526] The amount (weight) of the dopant (or emitter) in the emission layer can be in the range of about 0.01 parts by weight to about 15 parts by weight, based on 100 parts by weight of the host.

[0527] According to one or more embodiments, the emission layer can include the organic metal compound represented by Formula 1. The amount of the organic metal compound in the emission layer can be in the range of about 0.01 parts by weight to about 30 parts by weight, about 0.1 parts by weight to about 20 parts by weight, or about 0.1 parts by weight to about 15 parts by weight, based on 100 parts by weight of the emission layer.

[0528] According to one or more embodiments, the emission layer can include a quantum dot.

[0529] According to one or more embodiments, the emission layer can include a delayed fluorescence material. The delayed fluorescence material can act as a host or a dopant in the emission layer.

[0530] The thickness of the emission layer can be about to about For example, about to about When the thickness of the emission layer is in the above range, excellent or suitable light emitting characteristics can be obtained without significantly increasing the driving voltage.

[0531] The host

[0532] According to one or more embodiments, the host in the emission layer can include a second compound, a third compound, or any combination thereof.

[0533] In one or more embodiments, the host can include a compound represented by Formula 301:

[0534] Formula 301

[0535] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 ,

[0536] wherein, in formula 301,

[0537] Ar 301 and L 301 may each independently be unsubstituted or substituted with at least one R 10a C3-C 60 carbocyclyl or unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclyl,

[0538] xb11may be 1, 2, or 3,

[0539] xb1may be an integer from 0 to 5,

[0540] R 301 may be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C1-C 60 alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 alkoxy, unsubstituted or substituted with at least one R 10a C3-C 60 carbocyclyl, unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclyl, -Si(Q 301 )(Q 302 )(Q 303 ), -N(Q 301 )(Q 302 ), -B(Q 301 )(Q 302 ), -C(=O)(Q 301 ), -S(=O)2(Q 301 ), or -P(=O)(Q 301 )(Q 302 ),

[0541] xb21may be an integer from 1 to 5, and

[0542] Q 301 through Q 303 are each the same as described for Q1.

[0543] According to one or more embodiments, if (e.g., when) xb11in formula 301 is 2 or greater, then Artwo or more of R 301 may be connected to each other via a single bond.

[0544] According to one or more embodiments, the host can include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0545] Formula 301-1

[0546]

[0547] Formula 301-2

[0548]

[0549] wherein, in Formula 301-1 and Formula 301-2,

[0550] Ring A 301 to Ring A 304 may each independently be unsubstituted or substituted with at least one R 10a C3-C 60 carbocyclyl or unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclyl,

[0551] X 301 may be O, S, N[(L 304 ) xb4 -R 304 ], C(R 304 )(R 305 ) or Si(R 304 )(R 305 ),

[0552] xb22and xb23may each independently be 0, 1 or 2,

[0553] L 301 , xb1and R 301 are each the same as described in the present disclosure,

[0554] L 302 to L 304 may each independently be the same as described in relation to L 301 ,

[0555] xb2to xb4may each independently be the same as described in relation to xb1, and

[0556] R 302 to R 305 and R 311 to R 314 are each the same as described in relation to R 301 .

[0557] According to one or more embodiments, the host can include an alkaline earth metal complex, a late transition metal complex, or any combination thereof. According to one or more embodiments, the host can include a Be complex (e.g., compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0558] In one or more embodiments, the host can include (e.g., can be): at least one (e.g., any one) selected from among compound H1 to compound H128; 9,10-di(2-naphthyl)anthracene (ADN); 2-methyl-9,10-bis(naphthalen-2-yl)anthracene (MADN); 9,10-di(2-naphthyl)-2-tert-butylanthracene (TBADN); 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP); 1,3-bis(carbazol-9-yl)benzene (mCP); 1,3,5-tris(carbazol-9-yl)benzene (TCP); or any combination thereof:

[0559]

[0560]

[0561]

[0562]

[0563]

[0564]

[0565]

[0566] In one or more embodiments, the host can include a silicon-containing compound, a phosphine oxide-containing compound, or any combination thereof.

[0567] The host can have one or more suitable modifications. For example, the host can include only one compound, or can include two or more different compounds.

[0568] Phosphorescent dopant

[0569] The emission layer can include an organometallic compound represented by Formula 1 as a phosphorescent dopant.

[0570] According to one or more embodiments, if (e.g., when) the emission layer includes an organometallic compound represented by Formula 1 and the organometallic compound represented by Formula 1 is used as an auxiliary dopant, the emission layer can further include a phosphorescent dopant.

[0571] The phosphorescent dopant can include at least one transition metal as a central metal.

[0572] The phosphorescent dopant can include a monodentate ligand, a bidentate ligand, a tridentate ligand, a tetradentate ligand, a pentadentate ligand, a hexadentate ligand, or any combination thereof.

[0573] The phosphorescent dopant can be electrically neutral.

[0574] According to one or more embodiments, the phosphorescent dopant can include an organometallic compound represented by Formula 401:

[0575] Formula 401

[0576] M(L 401 ) xc1 (L 402 ) xc2

[0577] Formula 402

[0578]

[0579] wherein, in Formula 401 and Formula 402,

[0580] M can be a transition metal (e.g., Ir, Pt, Pd, Os, Ti, Au, Hf, Eu, Tb, Rh, Re, or Tm),

[0581] L 401 may be a ligand represented by Formula 402, xc1 is 1, 2, or 3, wherein, if (e.g., when) xc1 is 2 or more, two or more of L 401 may be the same as or different from each other,

[0582] L 402 may be an organic ligand, xc2 can be 0, 1, 2, 3, or 4, wherein, if (e.g., when) xc2 is 2 or more, two or more of L 402 may be the same as or different from each other, X 401 and X 402 may each independently be nitrogen or carbon,

[0583] Ring A 401 and Ring A 402 may each independently be C3-C 60 carbocyclyl, or C1-C 60 heterocyclyl,

[0584] T 401 may be a single bond, *-O-*, *-S-*, *-C(=O)-*, *-N(Q 411 )-*, *-C(Q 411 )(Q412 )-*', *-C(Q 411 ) = C(Q 412 )-*', *-C(Q 411 ) = * or = C = *,

[0585] X 403 and X 404 may each independently be a chemical bond (e.g., a covalent bond or a coordinate bond), O, S, N(Q 413 ), B(Q 413 ), P(Q 413 ), C(Q 413 )(Q 414 ), or Si(Q 413 )(Q 414 ),

[0586] Q 411 through Q 414 are each the same as described for Q1,

[0587] R 401 and R 402 may each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C1-C 20 alkyl, unsubstituted or substituted with at least one R 10a C1-C 20 alkoxy, unsubstituted or substituted with at least one R 10a C3-C 60 carbocyclyl, unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclyl, -Si(Q 401 )(Q 402 )(Q 403 ), -N(Q 401 )(Q 402 ), -B(Q 401 )(Q 402 ), -C(=O)(Q 401 ), -S(=O)2(Q 401 ), or -P(=O)(Q 401 )(Q 402 ,

[0588] Q 401 through Q 403 are each the same as described for Q1,

[0589] xc11and xc12may each independently be an integer from 0 to 10, and

[0590] Each of * and * in Formula 402 represents a bonding site to M in Formula 401.

[0591] According to one or more embodiments, in Formula 402, i) X 401 may be nitrogen, X 402 may be carbon, or ii) X 401 and X 402 may each be nitrogen.

[0592] According to one or more embodiments, if (e.g., when) xc1 in Formula 401 is 2 or greater, then L 401 Two rings A 401 may be optionally connected together via T 402 as a linker, and / or two rings A 402 may be optionally connected together via T 403 as a linker (see Compounds PD1 through PD4 and Compound PD7). T 402 and T 403 are the same as described with respect to T 401 .

[0593] L 402 in Formula 401 can be an organic ligand. According to one or more embodiments, L 402 may include a halogen, a diketone group (e.g., acetylacetonate group), a carboxylic acid group (e.g., picolinic acid group), a -C(=O) group, an isonitrile group, a -CN group, a phosphorus-containing group (e.g., phosphine group and / or phosphite group, etc.), or any combination thereof.

[0594] In one or more embodiments, the phosphorescent dopant can include (e.g., can be) at least one of (e.g., any one selected from among) Compounds PD1 through PD39, or any combination thereof, for example:

[0595]

[0596]

[0597]

[0598] fluorescent dopant

[0599] According to one or more embodiments, if (e.g., when) the emission layer includes an organometallic compound represented by Formula 1 and the organometallic compound represented by Formula 1 is used as an auxiliary dopant, the emission layer can further include a fluorescent dopant.

[0600] In one or more embodiments, if (e.g., when) the emission layer includes the organometallic compound represented by Formula 1 and the organometallic compound represented by Formula 1 is used as a phosphorescent dopant, the emission layer can further include an auxiliary dopant.

[0601] The fluorescent dopant and the auxiliary dopant can each independently include an arylamine compound, a styrylamine compound, a boron-containing compound, or any combination thereof.

[0602] According to one or more embodiments, the fluorescent dopant and the auxiliary dopant can each independently include a compound represented by Formula 501:

[0603] Formula 501

[0604]

[0605] wherein, in Formula 501,

[0606] Ar 501 , L 501 to L 503 , R 501 , and R 502 may each independently be a C3-C 10a carbocyclyl group that is unsubstituted or substituted with at least one R 60 , or a C1-C 10a heterocyclyl group that is unsubstituted or substituted with at least one R 60 ,

[0607] xd1 to xd3 can each independently be 0, 1, 2, or 3, and

[0608] xd4 can be 1, 2, 3, 4, 5, or 6.

[0609] According to one or more embodiments, Ar 501 in Formula 501 can be a condensed ring group in which three or more monocyclic groups are condensed together (e.g., an anthracene group, a chrysene group, and / or a pyrene group, etc.).

[0610] According to one or more embodiments, xd4 in Formula 501 can be 2.

[0611] According to one or more embodiments, the fluorescent dopant and the auxiliary dopant can each include (e.g., can each be): at least one (e.g., any one) selected from among the compounds FD1 to FD37; 4,4'-bis(2,2-diphenylvinyl)-1,1'-biphenyl (DPVBi); 4,4'-bis[4-(N,N-diphenylamino)styryl]biphenyl (DPAVBi); or any combination thereof:

[0612]

[0613]

[0614]

[0615]

[0616] Delayed fluorescence material

[0617] The emission layer can include a delayed fluorescence material.

[0618] Here, the delayed fluorescence material can be any one selected from among compounds capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0619] The delayed fluorescence material can include, for example, the fourth compound described herein.

[0620] The delayed fluorescence material included in the emission layer can act as a host or a dopant depending on the type (kind) of other materials included in the emission layer.

[0621] According to one or more embodiments, a difference (e.g., an absolute value of the difference) between a triplet energy level (eV) of the delayed fluorescence material and a singlet energy level (eV) of the delayed fluorescence material can be at least 0 eV but not more than about 0.5 eV. When the difference between the triplet energy level (eV) of the delayed fluorescence material and the singlet energy level (eV) of the delayed fluorescence material is within the above range, up-conversion of the delayed fluorescence material from the triplet state to the singlet state can effectively occur, and thus, the light emitting device 10 can have improved light emitting efficiency.

[0622] According to one or more embodiments, the delayed fluorescence material can include: i) a material including at least one electron donor (e.g., a π-electron rich C3-C 60 ring group) and at least one electron acceptor (e.g., a sulfoxide group, a cyano group, and / or a π- electron poor nitrogen-containing C1-C 60 ring group, etc.); and / or ii) a material including a C8-C 60 polycyclic ring group including at least two ring groups condensed with each other while sharing boron (B).

[0623] Non-limiting examples of the delayed fluorescence material can include at least one selected from among the compound DF1 to the compound DF14:

[0624]

[0625]

[0626] Quantum dot

[0627] In one or more embodiments, the emissive layer can include quantum dots.

[0628] The term “quantum dot” as used herein refers to a crystal of a semiconductor compound, and can include any material capable of emitting light of one or more suitable emission wavelengths depending on the size of the crystal.

[0629] The diameter of the quantum dot can be, for example, in the range of about 1 nm to about 10 nm. In the present disclosure, when the dot, the plurality of dots, or the dot particle is spherical, the “diameter” indicates the particle diameter or the average particle diameter, and when the particle is non-spherical, the “diameter” indicates the length of the long axis or the average length of the long axis. The diameter of the particle can be measured using a scanning electron microscope or a particle size analyzer. As the particle size analyzer, for example, a HORIBA, LA-950 laser particle size analyzer can be used. When the size of the particle is measured using the particle size analyzer, the average particle diameter is referred to as D50. The D50 refers to the average diameter of the particle whose cumulative volume corresponds to 50% by volume in the particle size distribution (e.g., the cumulative distribution), and refers to the particle size value corresponding to 50% from the smallest particle when the total number of particles is 100% in the order of the smallest particle to the largest particle in the distribution curve.

[0630] The quantum dot can be synthesized by a wet chemical process, a metal organic chemical vapor deposition process, a molecular beam epitaxy process, or any process similar thereto.

[0631] The wet chemical process is a method including mixing a precursor material of the quantum dot with an organic solvent and then growing a crystal of the quantum dot particle. When the crystal of the quantum dot particle grows, the organic solvent naturally serves as a dispersant coordinated on the surface of the crystal of the quantum dot particle and controls the growth of the crystal of the quantum dot particle, so that the growth of the crystal of the quantum dot particle can be controlled or selected by a process that is less costly and easier than a vapor deposition method such as metal organic chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE).

[0632] The quantum dot can include a group II-VI semiconductor compound, a group III-V semiconductor compound, a group III-VI semiconductor compound, a group I-III-VI semiconductor compound, a group IV-VI semiconductor compound, a group IV element or compound, and / or a combination (e.g., any suitable combination) thereof.

[0633] Non-limiting examples of Group II-VI semiconductor compounds can include (e.g., can be): binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, and / or MgS; ternary compounds such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, and / or MgZnS; quaternary compounds such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, and / or HgZnSTe; and / or combinations (e.g., any suitable combinations) thereof.

[0634] Non-limiting examples of Group III-V semiconductor compounds can include (e.g., can be): binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and / or InSb, etc.; ternary compounds such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, and / or InPSb, etc.; quaternary compounds such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and / or InAlPSb, etc.; and / or any combinations thereof. In one or more embodiments, Group III-V semiconductor compounds can also include Group II elements. Non-limiting examples of Group III-V semiconductor compounds that also include Group II elements are InZnP, InGaZnP, and / or InAlZnP, etc.

[0635] Non-limiting examples of Group III-VI semiconductor compounds can include (e.g., can be): binary compounds such as GaS, GaSe, Ga2Se3, GaTe, InS, InSe, In2S3, In2Se3, and / or InTe; ternary compounds such as InGaS3 and / or InGaSe3; and / or combinations (e.g., any suitable combinations) thereof.

[0636] Non-limiting examples of Group I-III-VI semiconductor compounds can include (e.g., can be): ternary compounds such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2, and / or AgAlO2, etc.; and / or any combination thereof.

[0637] Non-limiting examples of Group IV-VI semiconductor compounds can include (e.g., can be): binary compounds such as SnS, SnSe, SnTe, PbS, PbSe, and / or PbTe; ternary compounds such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, and / or SnPbTe; quaternary compounds such as SnPbSSe, SnPbSeTe, and / or SnPbSTe; and / or (e.g., any suitable) combination thereof.

[0638] Group IV elements or compounds can include: single-element materials such as Si and / or Ge; binary compounds such as SiC and / or SiGe; and / or (e.g., any suitable) combination thereof.

[0639] Each element included in a multi-element compound such as a binary compound, a ternary compound, and a quaternary compound can be present in the particle in a substantially uniform concentration or in a non-uniform concentration.

[0640] In one or more embodiments, a quantum dot can have a single structure or a core-shell double structure in which the concentration of each element in the quantum dot is substantially uniform. For example, the material included in the core and the material included in the shell can be different from each other.

[0641] The shell of a quantum dot can serve as a protective layer that prevents chemical denaturation of the core to maintain semiconductor properties, and / or as a charged layer that imparts electrophoretic properties to the quantum dot. The shell can be single-layered or multi-layered. The interface between the core and the shell can have a concentration gradient in which the concentration of the material present in the shell decreases toward the center of the core.

[0642] Examples of the shell of the quantum dot can be a metal, a metalloid, or a nonmetal oxide, a semiconductor compound, and / or a combination (e.g., any suitable combination) thereof. Non-limiting examples of the metal, the metalloid, or the nonmetal oxide can include (e.g., can be) binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and / or NiO; ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, and / or CoMn2O4; and / or a combination (e.g., any suitable combination) thereof. As described herein, examples of the semiconductor compound can include (e.g., can be) a Group II-VI semiconductor compound; a Group III-V semiconductor compound; a Group III-VI semiconductor compound; a Group I-III-VI semiconductor compound; a Group IV-VI semiconductor compound; and / or a combination (e.g., any suitable combination) thereof. For example, semiconductor compounds suitable for use as the shell can include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, and / or a combination (e.g., any suitable combination) thereof.

[0643] The full width at half maximum (FWHM) of the emission wavelength of the quantum dot can be about 45 nm or less, for example, about 40 nm or less, or for example, about 30 nm or less. Within these ranges, the color purity or color reproducibility of the quantum dot can be increased. In addition, because light emitted by the quantum dot is emitted in all directions, a wide viewing angle can be improved.

[0644] In addition, the quantum dot can be in the shape of a spherical nanoparticle, a pyramidal nanoparticle, a multi-armed nanoparticle, a cubic nanoparticle, a nanotube, a nanowire, a nanofiber, or a nanoplatelet.

[0645] Because the energy band gap of the quantum dot can be adjusted by controlling the size of the quantum dot, light having one or more suitable wavelength bands can be emitted from the quantum dot emission layer. Thus, by using quantum dots of different sizes, a light emitting device that emits light of one or more suitable wavelengths can be realized. In one or more embodiments, the size of the quantum dot can be selected to enable the quantum dot to emit red light, green light, and / or blue light. In addition, quantum dots having suitable sizes can be configured to emit white light by combining light of one or more suitable colors.

[0646] Electron transport region in the intermediate layer 130

[0647] The electron transport region can have: i) a single layer structure comprising (e.g., consisting of) a single layer comprising (e.g., consisting of) a single material; ii) a single layer structure comprising (e.g., consisting of) a single layer comprising a plurality of different materials; or iii) a multi-layer structure comprising a plurality of layers comprising a plurality of different materials.

[0648] The electron transport region can include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0649] For example, in one or more embodiments, the electron transport region can have an electron transport layer / electron injection layer structure, a hole blocking layer / electron transport layer / electron injection layer structure, an electron control layer / electron transport layer / electron injection layer structure, or a buffer layer / electron transport layer / electron injection layer structure, where the constituent layers in each structure are sequentially stacked in the order stated from the emissive layer.

[0650] In one or more embodiments, the electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer in the electron transport region) can include a nitrogen-containing C1-C6alkyl group comprising at least one π-electron deficient. 60 Metal-free compounds of heterocyclyl.

[0651] According to one or more embodiments, the electron transport region can include a compound represented by Formula 601.

[0652] Formula 601

[0653] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21

[0654] In Formula 601,

[0655] Ar 601 and L 601 may each independently be C3-C10carbocyclyl unsubstituted or substituted with at least one R 10a C1-C6alkyl, 60 heterocyclyl unsubstituted or substituted with at least one R 10a C1-C6alkyl, 60 heterocyclyl,

[0656] xe11may be 1, 2, or 3,

[0657] xe1may be 0, 1, 2, 3, 4, or 5,

[0658] R 601may be unsubstituted or substituted with at least one R 10a C3-C 60 carbon ring group, unsubstituted or substituted with at least one R 10a C1-C 60 heterocyclic group, -Si(Q 601 )(Q 602 )(Q 603 ), -C(=O)(Q 601 ), -S(=O)2(Q 601 ), or -P(=O)(Q 601 )(Q 602 ),

[0659] Q 601 to Q 603 are each the same as described for Q1,

[0660] xe21may be 1, 2, 3, 4, or 5, and

[0661] at least one selected from Ar 601 , L 601 , and R 601 may each independently be a π-electron poor nitrogen-containing C1-C 10a ring group unsubstituted or substituted with at least one R 60 .

[0662] According to one or more embodiments, if (e.g., when) xe11in Formula 601 is 2 or greater, two or more of Ar 601 may be connected together via a single bond.

[0663] According to one or more embodiments, Ar 601 in Formula 601 can be an anthracene group unsubstituted or substituted with at least one R 10a .

[0664] According to one or more embodiments, the electron transport region can include a compound represented by Formula 601-1:

[0665] Formula 601-1

[0666]

[0667] where, in Formula 601-1,

[0668] X 614 may be N or C(R 614 ), X 615 may be N or C(R 615 ), X 616 may be N or C(R 616 ), selected from X614 at least one of X 616 may be N,

[0669] L 611 at least one of L 613 are each the same as described with respect to L 601

[0670] xe611 through xe613 are each the same as described with respect to xe1,

[0671] R 611 at least one of R 613 are each the same as described with respect to R 601 and

[0672] R 614 at least one of R 616 may each independently be hydrogen, deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 alkyl, C1-C 20 alkoxy, C3-C 10a carbocyclyl unsubstituted or substituted with at least one R 60 , or C1-C 10a heterocyclyl unsubstituted or substituted with at least one R 60 .

[0673] According to one or more embodiments, xe1 and xe611 through xe613 in Formula 601 and Formula 601-1 can each independently be 0, 1, or 2.

[0674] In one or more embodiments, the electron transport region can include at least one selected from the group consisting of compounds ET1 through ET45, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), tris(8-hydroxyquinoline)aluminum (Alq3), bis(2-methyl-8-quinolinolato-N1,O8)-(1,1'-biphenyl-4-olato)aluminum (BAlq), 3-(4-biphenylyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), 4-(naphthalen-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (NTAZ), or any combination thereof:

[0675]

[0676]

[0677]

[0678] The thickness of the electron transport region can be about to about​ For example, about to approximately When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, hole blocking layer, or electron control layer can all be independently within approximately [a certain range]. to approximately (For example, about to approximately Within the range of ), the thickness of the electron transport layer can be approximately to approximately (For example, about to approximately Within the range of the above parameters, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage when the thickness of the buffer layer, hole blocking layer, electron control layer, electron transport layer and / or electron transport region is within the above range.

[0679] In one or more embodiments, in addition to one or more of the materials described above, the electron transport region (e.g., the electron transport layer in the electron transport region) may also include a metallic material.

[0680] Metal-containing materials may include alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The metal ions in alkali metal complexes may be Li, Na, K, Rb, or Cs ions, while the metal ions in alkaline earth metal complexes may be Be, Mg, Ca, Sr, or Ba ions. Ligands coordinated to the metal ions of alkali metal or alkaline earth metal complexes may include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridinium, hydroxyphenanthrene, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof.

[0681] According to one or more embodiments, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) or compound ET-D2:

[0682]

[0683] In one or more embodiments, the electron transport region may include an electron injection layer that facilitates electron injection from the second electrode 150. The electron injection layer may be in direct contact with the second electrode 150.

[0684] The electron injection layer can have: i) a single-layer structure comprising (e.g., consisting of) a single layer comprising (e.g., consisting of) a single material; ii) a single-layer structure comprising (e.g., consisting of) a single layer comprising (e.g., consisting of) a plurality of different materials; or iii) a multi-layer structure comprising a plurality of layers comprising a plurality of different materials.

[0685] The electron injection layer can comprise an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0686] The alkali metal can comprise Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metal can comprise Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metal can comprise Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0687] The alkali metal-containing compound, the alkaline earth metal-containing compound, and the rare earth metal-containing compound can comprise, respectively, an oxide, a halide (e.g., a fluoride, a chloride, a bromide, and / or an iodide, etc.), or a telluride of the alkali metal, the alkaline earth metal, and the rare earth metal, or any combination thereof.

[0688] The alkali metal-containing compound can comprise: an alkali metal oxide such as Li2O, Cs2O, and / or K2O, etc.; an alkali metal halide such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI, etc.; or any combination thereof. The alkaline earth metal-containing compound can comprise an alkaline earth metal oxide such as BaO, SrO, CaO, Ba x Sr 1-x O (x is a real number satisfying 0 < x < 1) and / or Ba x Ca 1-xO (x is a real number satisfying 0 < x < 1). The rare earth metal containing compound can include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, or any combination thereof. According to one or more embodiments, the rare earth metal containing compound can include lanthanide tellurides. Non-limiting examples of lanthanide tellurides can include LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La2Te3, Ce2Te3, Pr2Te3, Nd2Te3, Pm2Te3, Sm2Te3, Eu2Te3, Gd2Te3, Tb2Te3, Dy2Te3, Ho2Te3, Er2Te3, Tm2Te3, Yb2Te3, and Lu2Te3.

[0689] The alkali metal complex, the alkaline earth metal complex, and the rare earth metal complex can include: i) one of the metal ions of the alkali metal, one of the metal ions of the alkaline earth metal, and one of the metal ions of the rare earth metal, respectively; and ii) a ligand (e.g., a hydroxyquinoline, a hydroxyisoquinoline, a hydroxybenzoquinoline, a hydroxyacridine, a hydroxyphenanthridine, a hydroxyphenyl-oxazole, a hydroxyphenyl-thiazole, a hydroxyphenyl-oxadiazole, a hydroxyphenyl-thiadiazole, a hydroxyphenyl-pyridine, a hydroxyphenyl-benzimidazole, a hydroxyphenyl-benzothiazole, a bipyridine, a phenanthroline, a cyclopentadiene, or any combination thereof) bound to the metal ion (e.g., the corresponding metal ion).

[0690] In one or more embodiments, the electron injection layer can include (e.g., consist of) the alkali metal, the alkaline earth metal, the rare earth metal, the alkali metal containing compound, the alkaline earth metal containing compound, the rare earth metal containing compound, the alkali metal complex, the alkaline earth metal complex, the rare earth metal complex, or any combination thereof as described above. According to one or more embodiments, the electron injection layer can further include an organic material (e.g., a compound represented by Formula 601).

[0691] According to one or more embodiments, the electron injection layer can include i) an alkali metal-containing compound (e.g., an alkali metal halide) or ii) a) an alkali metal-containing compound (e.g., an alkali metal halide) and b) an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof (e.g., consisting of i) an alkali metal-containing compound (e.g., an alkali metal halide) or ii) a) an alkali metal-containing compound (e.g., an alkali metal halide) and b) an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof). According to one or more embodiments, the electron injection layer can be a KI:Yb co-deposited layer, a RbI:Yb co-deposited layer, and / or a LiF:Yb co-deposited layer, etc.

[0692] When the electron injection layer further includes an organic material, the alkali metal, the alkaline earth metal, the rare earth metal, the alkali metal-containing compound, the alkaline earth metal-containing compound, the rare earth metal-containing compound, the alkali metal complex, the alkaline earth metal complex, the rare earth metal complex, or any combination thereof can be uniformly (e.g., substantially uniformly) or non-uniformly dispersed in a matrix including the organic material.

[0693] The thickness of the electron injection layer can be about to about For example, about to about When the thickness of the electron injection layer is in the range as described above, satisfactory electron injection characteristics can be obtained without significantly increasing a driving voltage.

[0694] The second electrode 150

[0695] The second electrode 150 can be disposed on the intermediate layer 130. The second electrode 150 can be a cathode as an electron injection electrode, and as a material for forming the second electrode 150, a metal, an alloy, a conductive compound, or any combination thereof each having a low work function can be used.

[0696] The second electrode 150 can include lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, or any combination thereof. The second electrode 150 can be a transmissive electrode, a transreflective electrode, or a reflective electrode.

[0697] The second electrode 150 can have a single layer structure or a multi-layer structure including a plurality of layers.

[0698] The capping layer

[0699] The first cover layer can be disposed outside (e.g., on) the first electrode 110, and / or the second cover layer can be disposed outside (e.g., on) the second electrode 150. In one or more embodiments, the light emitting device 10 can have a structure in which the first cover layer, the first electrode 110, the intermediate layer 130, and the second electrode 150 are sequentially stacked in the stated order, a structure in which the first electrode 110, the intermediate layer 130, the second electrode 150, and the second cover layer are sequentially stacked in the stated order, or a structure in which the first cover layer, the first electrode 110, the intermediate layer 130, the second electrode 150, and the second cover layer are sequentially stacked in the stated order.

[0700] In one or more embodiments, light generated in the emission layer of the intermediate layer 130 of the light emitting device 10 can be extracted toward the outside through the first electrode 110 and the first cover layer as a transflective electrode or a transmissive electrode. In one or more embodiments, light generated in the emission layer of the intermediate layer 130 of the light emitting device 10 can be extracted toward the outside through the second electrode 150 and the second cover layer as a transflective electrode or a transmissive electrode.

[0701] The first cover layer and the second cover layer can increase the external emission efficiency according to the principle of constructive interference. Accordingly, the light extraction efficiency of the light emitting device 10 is increased; as a result, the light emitting efficiency of the light emitting device 10 can be increased.

[0702] Each of the first cover layer and the second cover layer can include a material having a refractive index of 1.6 or more (e.g., at 589 nm).

[0703] The first cover layer and the second cover layer can each independently be an organic cover layer including an organic material, an inorganic cover layer including an inorganic material, or an organic-inorganic composite cover layer including an organic material and an inorganic material.

[0704] At least one of the first cover layer and the second cover layer can (e.g., each of the first cover layer and the second cover layer can independently) include a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine-containing compound can each be optionally substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. According to one or more embodiments, at least one of the first cover layer and the second cover layer can (e.g., each of the first cover layer and the second cover layer can independently) include an amine-containing compound.

[0705] According to one or more embodiments, at least one of the first and second cover layers can include (e.g., each of the first and second cover layers can independently) a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof.

[0706] According to one or more embodiments, at least one of the first and second cover layers can include (e.g., each of the first and second cover layers can independently) at least one selected from the group consisting of Compound HT28 to Compound HT33, at least one selected from the group consisting of Compound CP1 to Compound CP6, β-NPB, or any combination thereof:

[0707]

[0708] Film

[0709] The organometallic compound represented by Formula 1 can be included in one or more suitable films. Accordingly, one or more aspects of the disclosed embodiments relate to a film including an organometallic compound represented by Formula 1. The film can be, for example, an optical member (or light control element) (e.g., a color filter, a color conversion member, a cover layer, a light extraction efficiency enhancement layer, a selective light absorption layer, a polarizing layer, and / or a quantum dot-containing layer, etc.), a light blocking member (e.g., a light reflecting layer and / or a light absorbing layer, etc.), and / or a protective member (e.g., an insulating layer and / or a dielectric layer, etc.), etc.

[0710] Electronic device

[0711] The light emitting device can be included in one or more suitable electronic devices. For example, in one or more embodiments, the electronic device including the light emitting device can be a light emitting device and / or an authentication device, etc.

[0712] In one or more embodiments, in addition to the light emitting device, the electronic device (e.g., a light emitting device) can include i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and / or the color conversion layer can be disposed in at least one travel direction of light emitted from the light emitting device. For example, in one or more embodiments, the light emitted from the light emitting device can be blue light, green light, or white light (e.g., combined white light). Detailed descriptions of the light emitting device are provided above. According to one or more embodiments, the color conversion layer can include quantum dots.

[0713] The electronic device can include a first substrate. The first substrate can include a plurality of sub-pixel regions, the color filter can include a plurality of color filter regions corresponding to the sub-pixel regions, respectively, and the color conversion layer can include a plurality of color conversion regions corresponding to the sub-pixel regions, respectively.

[0714] The pixel defining film can be disposed between the sub-pixel regions to define each of the sub-pixel regions.

[0715] The color filter can further include a plurality of color filter regions and a light blocking pattern disposed between the color filter regions, and the color conversion layer can further include a plurality of color conversion regions and a light blocking pattern disposed between the color conversion regions.

[0716] The plurality of color filter regions (or the plurality of color conversion regions) can include a first region configured to emit first color light, a second region configured to emit second color light, and / or a third region configured to emit third color light, where the first color light, the second color light, and / or the third color light can have different maximum emission wavelengths. According to one or more embodiments, the first color light can be red light, the second color light can be green light, and the third color light can be blue light. According to one or more embodiments, the plurality of color filter regions (or the plurality of color conversion regions) can include quantum dots. For example, in one or more embodiments, the first region can include red quantum dots to emit red light, the second region can include green quantum dots to emit green light, and the third region can not include (e.g., can exclude) quantum dots. Detailed descriptions of quantum dots can be referred to the descriptions provided herein. The first region, the second region, and / or the third region can each further include a scatterer.

[0717] According to one or more embodiments, the light emitting device can emit first light, the first region can absorb the first light to emit first first color light, the second region can absorb the first light to emit second first color light, and the third region can absorb the first light to emit third first color light. In these embodiments, the first first color light, the second first color light, and the third first color light can have different maximum emission wavelengths. For example, the first light can be blue light, the first first color light can be red light, the second first color light can be green light, and the third first color light can be blue light.

[0718] In one or more embodiments, in addition to the light emitting device as described above, the electronic device can further include a thin film transistor. The thin film transistor can include a source electrode, a drain electrode, and an active layer, where one selected from among the source electrode and the drain electrode can be electrically connected to the first electrode or the second electrode of the light emitting device.

[0719] The thin film transistor can further include a gate electrode and / or a gate insulating film, etc.

[0720] The active layer can include crystalline silicon, amorphous silicon, an organic semiconductor, and / or an oxide semiconductor, etc.

[0721] In one or more embodiments, the electronic device can further include a sealing portion for sealing the light emitting device. The sealing portion can be disposed between the color filter and / or the color conversion layer and the light emitting device. The sealing portion allows light from the light emitting device to be extracted to the outside, and at the same time (e.g., concurrently) prevents environmental air and moisture from penetrating into the light emitting device. The sealing portion can be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion can be a thin film encapsulation layer including at least one layer of an organic layer and an inorganic layer. When the sealing portion is the thin film encapsulation layer, the electronic device can be flexible.

[0722] In one or more embodiments, various functional layers can be additionally disposed on the sealing portion in addition to the color filter and / or the color conversion layer, according to the use of the electronic device. Non-limiting examples of the functional layers can include a touch screen layer and a polarizing layer. The touch screen layer can be a pressure sensitive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer.

[0723] The authentication device can be a biometric authentication device that authenticates an individual, for example, by using biometric information of a living body (e.g., a fingertip and / or a pupil, etc.). The authentication device can further include a biometric information collector in addition to the light emitting device as described above.

[0724] The electronic device can be applied to one or more of a display, a light source, illumination, a personal computer (e.g., a mobile personal computer), a mobile phone, a digital camera, an electronic notebook, an electronic dictionary, an electronic game machine, a medical instrument (e.g., an electronic thermometer, a sphygmomanometer, a blood glucose meter, a pulse measurement device, a pulse wave measurement device, an electrocardiogram display, an ultrasonic diagnostic device, or an endoscope display), a fish finder, one or more suitable measuring instruments, a meter (e.g., a meter for a vehicle, an airplane, and a ship), and a projector, etc.

[0725] Electronic device

[0726] The light emitting device can be included in one or more suitable electronic devices.

[0727] According to one or more embodiments, the electronic device including the light emitting device can be at least one selected from among a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a telephone (e.g., a mobile phone), a tablet, a phablet, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro display, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall including a plurality of displays spliced together, a theater screen, a stadium screen, a light therapy device, and a signboard.

[0728] Because the light emitting device has excellent or suitable effects in terms of light emitting efficiency and long lifespan, the electronic device including the light emitting device can have desirable characteristics of having high brightness, high resolution, and low power consumption.

[0729] Figure 2 and Figure 3 Description

[0730] Figure 2 is a cross-sectional view showing a light emitting device as an example of an electronic device according to one or more embodiments of the disclosure.

[0731] Figure 2 The light emitting device of FIG. 1 can include a substrate 100, a thin film transistor (TFT), a light emitting device, and a package part 300 sealing the light emitting device.

[0732] The substrate 100 can be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer 210 can be on the substrate 100. The buffer layer 210 can prevent or reduce impurities from penetrating through the substrate 100, and can provide a flat surface on the substrate 100.

[0733] The TFT can be on the buffer layer 210. The TFT can include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0734] The active layer 220 can include an inorganic semiconductor such as silicon or polysilicon, an organic semiconductor, or an oxide semiconductor, and can include a source region, a drain region, and a channel region.

[0735] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 can be on the active layer 220, and the gate electrode 240 can be on the gate insulating film 230.

[0736] An interlayer insulating film 250 can be on the gate electrode 240. The interlayer insulating film 250 can be disposed between the gate electrode 240 and the source electrode 260 and between the gate electrode 240 and the drain electrode 270 to insulate them from each other.

[0737] The source electrode 260 and the drain electrode 270 can be on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 can be formed to expose the source region and the drain region of the active layer 220, and the source electrode 260 and the drain electrode 270 can be disposed to contact the exposed portions of the source region and the drain region of the active layer 220, respectively.

[0738] The TFT can be electrically connected to the light emitting device to drive the light emitting device, and can be covered and protected by a passivation layer 280. The passivation layer 280 can include an inorganic insulating film, an organic insulating film, or any combination thereof. The light emitting device can be disposed on the passivation layer 280. The light emitting device can include the first electrode 110, the intermediate layer 130, and the second electrode 150.

[0739] The first electrode 110 can be on the passivation layer 280. The passivation layer 280 can be disposed to expose a portion of the drain electrode 270, not completely cover the drain electrode 270, and the first electrode 110 can be disposed to be connected to the exposed portion of the drain electrode 270.

[0740] A pixel defining film 290 including an insulating material can be on the first electrode 110. The pixel defining film 290 can expose a certain area of the first electrode 110, and the intermediate layer 130 can be formed in the exposed area of the first electrode 110. The pixel defining film 290 can be a polyimide-based organic film or a polyacrylic-based organic film. In one or more embodiments, at least some of the layers in the intermediate layer 130 can extend beyond the upper portion of the pixel defining film 290 to be disposed in the form of a common layer.

[0741] The second electrode 150 can be on the intermediate layer 130, and a second cover layer 170 can additionally be formed on the second electrode 150. The second cover layer 170 can be formed to cover the second electrode 150.

[0742] An encapsulation part 300 can be on the second cover layer 170. The encapsulation part 300 can be disposed on the light emitting device to protect the light emitting device from moisture and / or oxygen. The encapsulation part 300 can include an inorganic film including silicon nitride (SiN x ), silicon oxide (SiO x), indium tin oxide, indium zinc oxide, or any combination thereof; organic films including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylenesulfonate, polyformaldehyde, polyarylate, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate and / or polyacrylic acid, etc.), epoxy resins (e.g., aliphatic glycidyl ether (AGE), etc.), or any combination thereof; and / or a combination (e.g., any suitable) of inorganic films and organic films.

[0743] Figure 3 is a cross-sectional view of a light emitting device as an example of an electronic device according to one or more embodiments of the disclosure.

[0744] In addition to the light shielding pattern 500 and the functional area 400 being additionally disposed on the package portion 300, Figure 3 The light emitting device of Figure 2 The light emitting device of Figure 3 The light emitting device included in the light emitting device of

[0745] Figure 4 The description of

[0746] Figure 4 is a schematic perspective view of an electronic device 1 including a light emitting device according to one or more embodiments of the disclosure. The electronic device 1 can be a portable electronic device (such as a mobile phone, a smart phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation, or an ultra-mobile PC (UMPC)) and one or more suitable products (such as a television, a laptop computer, a monitor, a billboard, or an Internet of Things (IoT) device) as an electronic device displaying a moving image or a still image. The electronic device 1 can be such a product above or a part thereof. In one or more embodiments, the electronic device 1 can be a wearable device (such as a smart watch, a watch phone, a glasses-type (glasses class) display, or a head-mounted display (HMD)) or a part of a wearable device. However, embodiments of the disclosure are not limited thereto. According to one or more embodiments, the electronic device 1 can be a cluster of a vehicle, a central information display (CID) disposed on a central dashboard or a cluster of a vehicle, an interior mirror display replacing a side mirror of a vehicle, an entertainment display for a rear seat of a vehicle, or a display disposed behind a front seat of a vehicle, a head-up display (HUD) installed in front of a vehicle or projected on a front windshield of a vehicle, or a computer-generated hologram augmented reality head-up display (CGH AR HUD). For convenience of explanation,Figure 4 One or more embodiments are shown in which the electronic device 1 is a smartphone.

[0747] The electronic device 1 can include a display area DA and a non-display area NDA outside the display area DA. The display apparatus of the electronic device 1 can implement an image through an array of a plurality of pixels arranged two-dimensionally in the display area DA.

[0748] The non-display area NDA is an area in which an image is not displayed, and can be entirely around (e.g., surrounding) the display area DA. In the non-display area NDA, a driver for providing an electrical signal or power to a display device arranged in the display area DA can be arranged. In the non-display area NDA, a pad, which is an area to which an electronic component or a printed circuit board can be electrically connected, can be arranged.

[0749] In the electronic device 1, a length in the x-axis direction (or x direction) and a length (e.g., width) in the y-axis direction (or y direction) can be different from each other. According to one or more embodiments, as shown in Figure 4 the length in the x-axis direction can be less than the length (e.g., width) in the y-axis direction. According to one or more embodiments, the length in the x-axis direction can be substantially the same as the length (e.g., width) in the y-axis direction. According to one or more embodiments, the length in the x-axis direction can be greater than the length (e.g., width) in the y-axis direction.

[0750] Figure 5 and Figures 6A to 6C descriptions

[0751] Figure 5 is a schematic view of the outside of a vehicle 1000 that is an electronic device including a light emitting device according to one or more embodiments of the disclosure. Figures 6A to 6C are schematic views of the inside of the vehicle 1000 according to one or more embodiments.

[0752] Referring to Figure 5 , Figure 6A , Figure 6B and Figure 6C , the vehicle 1000 can refer to one or more devices for moving an object to be transported, such as a person, an object, or an animal, from a departure point to a destination. The vehicle 1000 can include a vehicle traveling on a road or a track, a ship moving over the ocean or a river, and / or an airplane flying in the sky using the action of air, etc.

[0753] In one or more embodiments, the vehicle 1000 can travel on a road or a track. The vehicle 1000 can move in a certain direction according to rotation of at least one wheel thereof. According to one or more embodiments, the vehicle 1000 can include a three-wheeled vehicle, a four-wheeled vehicle, a construction machine, a two-wheeled vehicle, a prime mover device, a bicycle, and a train running on a track.

[0754] The vehicle 1000 can include a body having an inside and an outside, and a chassis which is other than the body of the vehicle 1000 and in which mechanical devices required for driving are installed. The outside of the body of the vehicle 1000 can include a front panel, an engine hood, a roof panel, a rear panel, a trunk, and / or a pillar provided at a boundary between doors, etc. The chassis of the vehicle 1000 can include a power generation device, a power transmission device, a driving device, a steering device, a braking device, a suspension device, a transmission device, a fuel device, front and rear wheels, and / or left and right wheels, etc.

[0755] The vehicle 1000 can include side window glasses 1100, a front window glass 1200, side mirrors 1300, a cluster 1400, a center fascia 1500, a passenger seat fascia 1600, and a display device 2.

[0756] The side window glasses 1100 and the front window glass 1200 can be divided by a pillar disposed between the side window glasses 1100 and the front window glass 1200.

[0757] The side window glasses 1100 can be installed on a side of the vehicle 1000. According to one or more embodiments, the side window glasses 1100 can be installed on a door of the vehicle 1000. A plurality of side window glasses 1100 can be provided and can face each other. According to one or more embodiments, the side window glasses 1100 can include a first side window glass 1110 and a second side window glass 1120. According to one or more embodiments, the first side window glass 1110 can be disposed adjacent to the cluster 1400, and the second side window glass 1120 can be disposed adjacent to the passenger seat fascia 1600.

[0758] According to one or more embodiments, the side window glasses 1100 can be separated and / or spaced apart (e.g., divided or separated) from each other in an x direction or an -x direction (a direction opposite to the x direction). According to one or more embodiments, the first side window glass 1110 and the second side window glass 1120 can be separated and / or spaced apart (e.g., divided or separated) from each other in the x direction or the -x direction. For example, an imaginary straight line L connecting the side window glasses 1100 can extend in the x direction or the -x direction. According to one or more embodiments, the imaginary straight line L connecting the first side window glass 1110 and the second side window glass 1120 to each other can extend in the x direction or the -x direction.

[0759] The front window glass 1200 can be installed in a front portion of the vehicle 1000. The front window glass 1200 can be disposed between the side window glasses 1100 opposite each other (e.g., facing each other).

[0760] The side mirror 1300 can provide a rear view of the vehicle 1000. The side mirror 1300 can be installed on an outside of a body of the vehicle 1000. According to one or more embodiments, a plurality of side mirrors 1300 can be provided. Any one of the plurality of side mirrors 1300 can be disposed outside the first side window glass 1110. Another one of the plurality of side mirrors 1300 can be disposed outside the second side window glass 1120.

[0761] The cluster 1400 can be disposed in front of a steering wheel. The cluster 1400 can include a tachometer, a speedometer, a coolant temperature gauge, a fuel gauge, a turn signal indicator, a high beam indicator, a warning light, a seat belt warning light, an odometer, a speed recorder, an automatic shift selector indicator light, an open door warning light, an engine oil warning light, and / or a low fuel warning light.

[0762] The center console 1500 can include a control panel on which a plurality of keys for adjusting an audio device, an air conditioning device, and / or a seat heater are disposed. The center console 1500 can be disposed on a side of the cluster 1400.

[0763] The passenger seat console 1600 can be separated and / or partitioned (e.g., partitioned or separated) from the cluster 1400, and the center console 1500 can be disposed between the cluster 1400 and the passenger seat console 1600. According to one or more embodiments, the cluster 1400 can be disposed corresponding to a driver seat, and the passenger seat console 1600 can be disposed corresponding to a passenger seat. According to one or more embodiments, the cluster 1400 can be adjacent to the first side window glass 1110, and the passenger seat console 1600 can be adjacent to the second side window glass 1120.

[0764] According to one or more embodiments, the display device 2 can include a display panel 3, and the display panel 3 can display an image. The display device 2 can be disposed inside the vehicle 1000. According to one or more embodiments, the display device 2 can be disposed between the side window glasses 1100 opposite each other (e.g., facing each other). The display device 2 can be disposed on at least one of the cluster 1400, the center console 1500, and the passenger seat console 1600.

[0765] The display device 2 can include an organic light emitting display device, an inorganic electroluminescent display device, and / or a quantum dot display device, etc. Hereinafter, as the display device 2 according to one or more embodiments, an organic light emitting display device including a light emitting element will be described as an example, but one or more suitable types (kinds) of display devices as described above can be used in embodiments.

[0766] Referring to Figure 6A In one or more embodiments, the display device 2 can be arranged on the center dashboard 1500. According to one or more embodiments, the display device 2 can display navigation information. According to one or more embodiments, the display device 2 can display information about audio settings, video settings, and / or vehicle settings.

[0767] Referring to Figure 6B In one or more embodiments, the display device 2 can be arranged on the cluster 1400. In these embodiments, the cluster 1400 can display driving information, etc. through the display device 2. For example, the cluster 1400 can be implemented in a digital manner. The cluster 1400 implemented in a digital manner can display vehicle information and driving information in the form of an image. According to one or more embodiments, a needle and a meter of a tachometer and one or more suitable warning lamp icons can be displayed through a digital signal.

[0768] Referring to Figure 6C In one or more embodiments, the display device 2 can be arranged on the passenger seat dashboard 1600. The display device 2 can be embedded in or arranged on the passenger seat dashboard 1600. According to one or more embodiments, the display device 2 arranged on the passenger seat dashboard 1600 can display an image related to information displayed on the cluster 1400 and / or information displayed on the center dashboard 1500. According to one or more embodiments, the display device 2 arranged on the passenger seat dashboard 1600 can display information different from information displayed on the cluster 1400 and / or information displayed on the center dashboard 1500.

[0769] [Manufacturing method]

[0770] The layers constituting the hole transport region, the emission layer, and the layers constituting the electron transport region can each be formed in a certain region by using one or more suitable methods such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, and / or laser-induced thermal imaging, etc.

[0771] When the layers constituting the hole transport region, the emission layer, and the layers constituting the electron transport region are each formed by vacuum deposition, the vacuum deposition can be performed at a deposition temperature in the range of about 100°C to about 500°C, at a vacuum degree in the range of about 10 -8 tor to about 10 -3 tor, and at a deposition rate in the range of about / second to about / second.

[0772] [Definitions of Terms]

[0773] The term "C3-C 60 carbocyclyl" as used herein refers to a cyclic group including carbon atoms as the only ring-forming atoms (e.g., consisting of carbon atoms as the only ring-forming atoms) and having three to sixty carbon atoms. The term "C1-C 60 heterocyclyl" as used herein refers to a cyclic group having one to sixty carbon atoms and further including, as ring-forming atoms, heteroatoms other than carbon atoms. The C3-C 60 carbocyclyl and the C1-C 60 heterocyclyl can each be a monocyclic group including one (e.g., exactly one) ring (e.g., consisting of one (e.g., exactly one) ring) or a polycyclic group in which two or more rings are condensed with each other. According to one or more embodiments, the C1-C 60 heterocyclyl can have a number of ring-forming atoms of 3 to 61.

[0774] The "cyclic group (cyclyl)" as used herein can include both (e.g., simultaneously) the C3-C 60 carbocyclyl and the C1-C 60 heterocyclyl.

[0775] The term "π-electron-rich C3-C 60 cyclic group" as used herein refers to a cyclic group having 3 to 60 carbon atoms and not including *-N=* as a ring-forming moiety. The term "π-electron-poor nitrogen-containing C1-C 60 cyclic group" as used herein refers to a heterocyclyl group having 1 to 60 carbon atoms and including *-N=* as a ring-forming moiety.

[0776] According to one or more embodiments,

[0777] C3-C 60The carbocyclic group can be: i) group T1; or ii) a condensed cyclic group in which two or more groups T1 are condensed together (e.g., cyclopentadienyl group, adamantyl group, norbornel group, phenyl group, cyclopentadienyl group, naphthyl group, chamomile cyclic group, indane group, acenaphthene group, phenanthrene group, phenanthrene group, anthracene group, fluoranthene group, benzo[9,10]phenanthrene group, pyrene group, Groups, perylene groups, pentanene groups, heptaphenyl groups, tetraphenyl groups, fentanyl groups, hexaphenyl groups, pentaphenyl groups, rutin groups, fentanyl groups, ovoid groups, indole groups, fluorene groups, spirodifluorene groups, benzo[a]fluorene groups, indole[a]phenanthrene groups, or indole[a]anthracene groups),

[0778] C1-C 60 The heterocyclic group can be: i) group T2; ii) a condensed ring group in which two or more groups T2 are condensed together; or iii) a condensed ring group in which at least one group T2 and at least one group T1 are condensed together (e.g., pyrrole group, thiophene group, furan group, indole group, benzoindole group, naphthoindole group, isoindole group, benzoisoindole group, naphthoisoindole group, benzothiophene group). Benzofuran group, carbazole group, dibenzothiophene group, dibenzofuran group, indole-carbazole group, indole-carbazole group, benzofuran-carbazole group, benzothiophene-carbazole group, benzothiophene-carbazole group, benzoindole-carbazole group, benzocarbazole group, benzonaphthiofuran group, benzonaphthiophene group, benzonaphthiophene group, benzofuran-dibenzofuran group, benzofuran-dibenzothiophene-carbazole group Phenoyl group, benzothiophene, dibenzothiophene group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiaazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benziisoxazole group, benzothiazole group, benziisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzo[…] Quinoline group, benzoisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazoline group, benzoquinazoline group, phenanthrene group, cinnamoline group, phthalazine group, naphthidine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzothiophene group, azadibenzothiophene group and / or azadibenzofuran group, etc.

[0779] C3-C rich in π electrons 60The ring group can be: i) a group T1; ii) a condensed ring group in which two or more groups T1 condense with each other; iii) a group T3; iv) a condensed ring group in which two or more groups T3 condense with each other; or v) a condensed ring group in which at least one group T3 and at least one group T1 condense with each other (e.g., C3-C 60 carbocyclic group, 1H-pyrrolyl group, thiopyrrolyl group, borolyl group, 2H-pyrrolyl group, 3H-pyrrolyl group, thiophenyl group, furanyl group, indolyl group, benzoindolyl group, naphthoindolyl group, isoindolyl group, benzoisoindolyl group, naphthoisoindolyl group, benzothiopyrrolyl group, benzothiophenyl group, benzofuranyl group, carbazolyl group, dibenzothiopyrrolyl group, dibenzothiophenyl group, dibenzofuranyl group, indenocarbazolyl group, indolocarbazolyl group, benzofuranocarbazolyl group, benzothienocarbazolyl group, benzothiopyrrolocarbazolyl group, benzoindolocarbazolyl group, benzo-carbazolyl group, benzonaphthofuranyl group, benzonaphthothiophenyl group, benzonaphthothiopyrrolyl group, benzofuranodibenzofuranyl group, benzofuranodibenzothiophenyl group, and / or benzothienodibenzothiophenyl group, etc.),

[0780] electron-deficient nitrogen-containing C1-C 60 The ring group can be: i) a group T4; ii) a condensed ring group in which two or more groups T4 condense with each other; iii) a condensed ring group in which at least one group T4 and at least one group T1 condense with each other; iv) a condensed ring group in which at least one group T4 and at least one group T3 condense with each other; or v) a condensed ring group in which at least one group T4, at least one group T1, and at least one group T3 condense with each other (e.g., pyrazolyl group, imidazolyl group, triazolyl group, oxazolyl group, isoxazolyl group, oxadiazolyl group, thiazolyl group, isothiazolyl group, thiadiazolyl group, benzopyrazolyl group, benzoimidazolyl group, benzoxazolyl group, benzoisoxazolyl group, benzothiazolyl group, benzoisothiazolyl group, pyridyl group, pyrimidinyl group, pyrazinyl group, pyridazinyl group, triazinyl group, quinolyl group, isoquinolyl group, benzoquinolyl group, benzoisoquinolyl group, quinoxalyl group, benzoquinoxalyl group, quinazolinyl group, benzoquinazolinyl group, phenanthrolinyl group, cinnolinyl group, phthalazinyl group, naphthyridinyl group, imidazopyridinyl group, imidazopyrimidinyl group, imidazotriazinyl group, imidazopyrazinyl group, imidazopyridazinyl group, azacarbazolyl group, azafluorenyl group, azadibenzothiopyrrolyl group, azadibenzothiophenyl group, and / or azadibenzofuranyl group, etc.),

[0781] Group T1 can be a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, a cyclooctane group, a cyclobutene group, a cyclopentene group, a cyclopentadiene group, a cyclohexene group, a cyclohexadiene group, a cycloheptene group, an adamantane group, a norbornane (or bicyclo[2.2.1]heptane) group, a norbornene group, a bicyclo[l. l. l]pentane group, a bicyclo[2. l. l]hexane group, a bicyclo[2.2.2]octane group, or a phenyl group,

[0782] Group T2 can be a furan group, a thiophene group, a 1H-pyrrole group, a thiopyrrole group, a borol group, a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azathiopyrrole group, an azaborol group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a tetrazine group, a pyrrolidine group, an imidazolidine group, a dihydropyrrole group, a piperidine group, a tetrahydropyridine group, a dihydropyridine group, a hexahydropyrimidine group, a tetrahydropyrimidine group, a dihydropyrimidine group, a piperazine group, a tetrahydropyrazine group, a dihydropyrazine group, a tetrahydropyridazine group, or a dihydropyridazine group.

[0783] Group T3 can be a furan group, a thiophene group, a 1H-pyrrole group, a thiopyrrole group, or a borol group, and

[0784] Group T4 can be a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azathiopyrrole group, an azaborol group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or a tetrazine group.

[0785] As used herein, the terms “cycloalkyl group,” “C3-C 60 carbocycloalkyl group,” “C1-C 60 heterocycloalkyl group,” “π-electron rich C3-C 60 cycloalkyl group,” and “π-electron poor nitrogen-containing C1-C 60 cycloalkyl group” can each refer to a group condensed with any cycloalkyl group, monovalent group, or polyvalent group (e.g., divalent group, trivalent group, and / or tetravalent group, etc.) according to the structure of the formula in which the corresponding term is used. According to one or more embodiments, a “phenyl group” can be a benzenoid group, a phenyl group, and / or a phenylene group, etc., as can be readily understood by one of ordinary skill in the art according to the structure of the formula including “phenyl group.”

[0786] monovalent C3-C 60 carbocycloalkyl group, and monovalent C1-C 60Non-limiting examples of heterocycloalkyl groups can include C3-C 10 cycloalkyl, C1-C 10 heterocycloalkyl, C3-C 10 cycloalkenyl, C1-C 10 heterocycloalkenyl, C6-C 60 aryl, C1-C 60 heteroaryl, monovalent non-aromatic condensed polycyclyl, and monovalent non-aromatic condensed heteropolycyclyl. Divalent C3-C 60 carbocyclyl, and divalent C1-C 60 Non-limiting examples of heterocyclyl groups are C3-C 10 cycloalkylene, C1-C 10 heterocycloalkylene, C3-C 10 cycloalkenylene, C1-C 10 heterocycloalkenylene, C6-C 60 arylene, C1-C 60 heteroarylene, divalent non-aromatic condensed polycyclyl, and divalent non-aromatic condensed heteropolycyclyl.

[0787] The term "C1-C 60 alkyl" as used herein refers to a straight-chain or branched-chain aliphatic saturated hydrocarbon monovalent radical having from one to sixty carbon atoms, non-limiting examples of which include methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, t-pentyl, neopentyl, i-pentyl, s-pentyl, 3-pentyl, sec-i-pentyl, n-hexyl, i-hexyl, s-hexyl, t-hexyl, n-heptyl, i-heptyl, s-heptyl, t-heptyl, n-octyl, i-octyl, s-octyl, t-octyl, n-nonyl, i-nonyl, s-nonyl, t-nonyl, n-decyl, i-decyl, s-decyl, and t-decyl. The term "C1-C 60 alkylene" as used herein refers to a divalent radical having essentially the same structure as a C1-C 60 alkyl radical.

[0788] The term "C2-C 60 alkenyl" as used herein refers to a monovalent hydrocarbon radical having at least one carbon-carbon double bond in the middle or at the end of a C2-C 60 alkyl radical, non-limiting examples of which include ethenyl, propenyl, and butenyl. The term "C2-C 60 alkenylene" as used herein refers to a divalent radical having essentially the same structure as a C2-C 60 alkenyl radical.

[0789] The term "C2-C 60 alkynyl" as used herein refers to a monovalent hydrocarbon radical having at least one carbon-carbon triple bond in the middle or at the end of a C2-C 60 alkyl radical, non-limiting examples of which include ethynyl and propynyl. The term "C2-C60 Alkynyl" refers to a divalent group having essentially the same structure as C2-C 60 Alkynyl" refers to a divalent group having essentially the same structure as C2-C

[0790] The term "C1-C 60 Alkoxy" refers to a monovalent group represented by -OA 101 (wherein A 101 is C1-C 60 Alkyl) represents a monovalent group, non-limiting examples of which include methoxy, ethoxy, and isopropoxy.

[0791] The term "C3-C 10 Cycloalkyl" refers to a monovalent saturated hydrocarbon ring group having from three to ten carbon atoms, non-limiting examples of which can include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[l. l. l]pentyl, bicyclo[2. l. l]hexyl, and / or bicyclo[2.2.2]octyl, and the like. The term "C3-C 10 Cycloalkyl" refers to a monovalent saturated hydrocarbon ring group having from three to ten carbon atoms, non-limiting examples of which can include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[l. l. l]pentyl, bicyclo[2. l. l]hexyl, and / or bicyclo[2.2.2]octyl, and the like. The term "C3-C 10 Cycloalkyl" refers to a monovalent saturated hydrocarbon ring group having from three to ten carbon atoms, non-limiting examples of which can include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[l. l. l]pentyl, bicyclo[2. l. l]hexyl, and / or bicyclo[2.2.2]octyl, and the like. The term "C3-C

[0792] The term "C1-C 10 Heterocycloalkyl" refers to a monovalent ring group having from one to ten carbon atoms and further including at least one heteroatom as a ring-forming atom in addition to carbon atoms, non-limiting examples of which include 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl, and tetrahydrothiophenyl. The term "C1-C 10 Heterocycloalkyl" refers to a monovalent ring group having from one to ten carbon atoms and further including at least one heteroatom as a ring-forming atom in addition to carbon atoms, non-limiting examples of which include 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl, and tetrahydrothiophenyl. The term "C1-C 10 Heterocycloalkyl" refers to a monovalent ring group having from one to ten carbon atoms and further including at least one heteroatom as a ring-forming atom in addition to carbon atoms, non-limiting examples of which include 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl, and tetrahydrothiophenyl. The term "C1-C

[0793] The term "C3-C 10 Cycloalkenyl" refers to a monovalent ring group having from three to ten carbon atoms in its ring and at least one carbon-carbon double bond and no aromaticity, non-limiting examples of which include cyclopentenyl, cyclohexenyl, and cycloheptenyl. The term "C3-C 10 Cycloalkenyl" refers to a monovalent ring group having from three to ten carbon atoms in its ring and at least one carbon-carbon double bond and no aromaticity, non-limiting examples of which include cyclopentenyl, cyclohexenyl, and cycloheptenyl. The term "C3-C 10 Cycloalkenyl" refers to a monovalent ring group having from three to ten carbon atoms in its ring and at least one carbon-carbon double bond and no aromaticity, non-limiting examples of which include cyclopentenyl, cyclohexenyl, and cycloheptenyl. The term "C3-C

[0794] The term "C1-C 10 Heterocycloalkenyl" refers to a monovalent ring group having from one to ten carbon atoms in its ring and further including at least one heteroatom as a ring-forming atom in addition to carbon atoms and having at least one double bond. C1-C 10Non-limiting examples of heterocycloalkenyl groups include 4,5-dihydro-l,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothienyl. The term "C1-C 10 heterocycloalkenyl groups. The term "C1-C 10 heterocycloalkenyl groups. The term "C1-C

[0795] The term "C6-C 60 aryl" refers to a monovalent radical of a carbocyclic aromatic ring system having six to sixty carbon atoms. The term "C6-C 60 arylene" refers to a divalent radical of a carbocyclic aromatic ring system having six to sixty carbon atoms. C6-C 60 Non-limiting examples of aryl groups include phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthylenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, chrysenyl, naphthacenyl, acenaphthyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, 60 aryl" and "C6-C 60 When the aryl and C6-C

[0796] The term "C1-C 60 heteroaryl" refers to a monovalent radical of a heterocyclic aromatic ring system having one to sixty carbon atoms and further including at least one heteroatom as a ring-forming atom in addition to carbon atoms. The term "C1-C 60 heteroarylene" refers to a divalent radical of a heterocyclic aromatic ring system having one to sixty carbon atoms and further including at least one heteroatom as a ring-forming atom in addition to carbon atoms. C1-C 60 Non-limiting examples of heteroaryl groups include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, benzoquinolinyl, isoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthrolinyl, phthalazinyl, and naphthyridinyl. When C1-C 60 heteroaryl" and "C1-C 60 When the heteroaryl and C1-C

[0797] The term "monovalent non-aromatic condensed polycyclic group" as used herein refers to a monovalent group having two or more rings condensed with one another, only carbon atoms (e.g., eight to sixty carbon atoms) as ring-forming atoms, and no aromaticity in its molecular structure when considered as a whole. Non-limiting examples of monovalent non-aromatic condensed polycyclic groups include indenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, indenophenanthryl, and indenoanthracenyl. The term "divalent non-aromatic condensed polycyclic group" as used herein refers to a divalent group having substantially the same structure as a monovalent non-aromatic condensed polycyclic group.

[0798] The term "monovalent non-aromatic condensed heteropolycyclic group" as used herein refers to a monovalent group having two or more rings condensed with one another, including at least one heteroatom in addition to carbon atoms (e.g., one to sixty carbon atoms) as ring-forming atoms, and no aromaticity in its molecular structure when considered as a whole. Non-limiting examples of monovalent non-aromatic condensed heteropolycyclic groups are pyrrolyl, thienyl, furanyl, indolyl, benzoindolyl, naphthoindolyl, isoindolyl, benzoisoindolyl, naphthoisoindolyl, benzothiophenyl, benzothienyl, benzofuranyl, carbazolyl, dibenzothiophenyl, dibenzothiophenyl, dibenzofuranyl, azacarbazolyl, azafuorenyl, azadibenzothiophenyl, azadibenzothiophenyl, azadibenzofuranyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, benzothiazolyl, benzoxadiazolyl, benzothiadiazolyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, indenocarbazolyl, indolocarbazolyl, benzofuranocarbazolyl, benzothienocarbazolyl, benzothianocarbazolyl, benzothianocarbazolyl, benzofuranodibenzofuranyl, benzofuranodibenzothienyl, and / or benzothienodibenzothienyl, and the like. The term "divalent non-aromatic condensed heteropolycyclic group" as used herein refers to a divalent group having substantially the same structure as a monovalent non-aromatic condensed heteropolycyclic group.

[0799] The term "C6-C 60 aryloxy" means -OA 102 (wherein A 102 is C6-C 60 aryl), the term "C6-C 60 arylsulfinyl" means -SA 103 (wherein A 103 is C6-C 60 aryl).

[0800] The term "C7-C 60 arylalkyl" refers to -A104 A 105 (Wherein A 104 is C1-C 54 alkylene, A 105 is C6-C 59 aryl), as the term "C2-C 60 heteroarylalkyl" is used herein refers to -A 106 A 107 (Wherein A 106 is C1-C 59 alkylene, A 107 is C1-C 59 heteroaryl).

[0801] As used herein the term "R 10a " can be:

[0802] deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, or hydrazono;

[0803] each being unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, C7-C 60 arylalkyl, C2-C 60 heteroarylalkyl, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ), or any combination thereof; 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, or C1-C 60 alkoxy;

[0804] each being unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, C7-C 60 arylalkyl, C2-C 60 heteroarylalkyl, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ), or any combination thereof; or 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, C7-C 60 arylalkyl or C2-C 60 heteroarylalkyl; or

[0805] -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), or -P(=O)(Q 31 )(Q 32 ).

[0806] Q1to Q3, Q 11 to Q 13 , Q 21 to Q 23 , and Q 31 to Q 33 as used herein can each independently be: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 alkyl; C2-C 60 alkenyl; C2-C 60 alkynyl; C1-C 60 alkoxy; each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C1-C 60 alkoxy, C1-CC3-C of alkoxy, phenyl, biphenyl, or any combination thereof 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 arylalkyl; or C2-C 60 Heteroarylalkyl.

[0807] As used herein, the term "heteroatom" refers to any atom other than carbon and hydrogen. Non-limiting examples of heteroatoms include O, S, N, P, Si, B, Ge, Se, or any combination thereof.

[0808] The term "transition metals" as used herein includes hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), and / or gold (Au), etc.

[0809] As used herein, the term "Ph" refers to phenyl, as used herein, the term "Me" refers to methyl, as used herein, the term "Et" refers to ethyl, and as used herein, the terms "tert-Bu" or "Bu" refer to... t "Refers to tert-butyl, as the term "OMe" used herein refers to methyl methacrylate (MMA).

[0810] As used herein, the term "biphenyl" refers to a "phenyl group that has a substituted phenyl group." For example, "biphenyl" can be a group with a C6-C ratio. 60 Aryl groups are substituted phenyl groups.

[0811] As used herein, the term "terphenyl" refers to a "phenyl group substituted with biphenyl groups." A "terphenyl" is a phenyl group having a C6-C substituted biphenyl group. 60 C6-C of aryl 60 Aryl groups are substituted phenyl groups.

[0812] Unless otherwise defined, as used herein, * and *' refer to the binding site with an adjacent atom in the corresponding expression or part.

[0813] As used herein, the terms “x-axis,” “y-axis,” and “z-axis” are not limited to the three axes in an orthogonal coordinate system and can be interpreted in a broader sense than the three axes described above in an orthogonal coordinate system. For example, the x-axis, y-axis, and z-axis can describe axes that are orthogonal to each other, or they can describe axes in different directions that are not orthogonal to each other.

[0814] In the following description, compounds according to one or more embodiments and light-emitting devices according to one or more embodiments will be described in detail with reference to the following synthesis examples and illustrations. The phrase "using B instead of A" used in describing the synthesis examples means using substantially the same molar equivalent of B instead of substantially the same molar equivalent of A.

[0815] Example

[0816] Synthesis of Example 1 : synthesis of compound 2

[0817]

[0818] 1) Synthesis of intermediate 2-1

[0819] Dissolve 4-bromo-6-fluoropyrimidine (1.0 eq), 9H-carbazole-1,2,3,4,5,6,7,8-d8 (2.0 eq) and potassium phosphate (K3PO4, 3.0 eq) in N,N-dimethylformamide (DMF) (0.01 M) and stir at 150 °C for 20 h to obtain a reaction product. After cooling the reaction product to room temperature, remove the solvent therefrom by distillation under reduced pressure at 8 mbar, subject it to a three extraction process using dichloromethane (MC) and water (e.g., add water) and then extract three times using dichloromethane (MC) to obtain an organic layer. Dry the organic layer thus obtained over anhydrous magnesium sulfate, concentrate and purify using column chromatography (eluent: MC:hexane (Hex)) to synthesize intermediate 2-1 (80% yield).

[0820] 2) Synthesis of intermediate 2-2

[0821] Dissolve intermediate 2-1 (1.0 eq), 2-methoxy-9H-carbazole-5,6,7,8-d4 (1.2 eq), copper (I) iodide (Cul, 0.05 eq), potassium carbonate (K2CO3, 3.0 eq) and (±)-trans-1,2-diaminocyclohexane (0.10 eq) in N,N-dimethylformamide (DMF) (0.01 M) and stir at 150 °C for 24 h to obtain a reaction product. After cooling the reaction product to room temperature, remove the solvent therefrom by distillation under reduced pressure at 8 mbar, subject it to a three extraction process using MC and water to obtain an organic layer. Dry the organic layer obtained over anhydrous magnesium sulfate, concentrate and purify using column chromatography (eluent: MC:Hex) to synthesize intermediate 2-2 (85% yield).

[0822] 3) Synthesis of intermediate 2-3

[0823] Dissolve intermediate 2-2 (1.0 eq) in dichloromethane (MC, 0.01 M), then slowly add 1.0 M boron tribromide (BBr3) in dichloromethane (2 eq) to it at 0 °C under a nitrogen atmosphere and stir at room temperature for 4 h to obtain a reaction product. Subject the reaction product to three extractions using water to obtain an organic layer. Dry the organic layer obtained over anhydrous magnesium sulfate, concentrate and purify using column chromatography (eluent: MC:Hex) to synthesize intermediate 2-3 (67% yield).

[0824] 4) Synthesis of intermediate 2-4

[0825] Intermediate 2-3 (1.0 eq), 1,3-dibromobenzene (2.0 eq), copper (I) iodide (Cul, 0.05 eq), potassium phosphate (3.0 eq) and 2-picolinic acid (0.10 eq) were dissolved in dimethyl sulfoxide (DMSO) (0.01 M) and stirred at 100 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to three extraction processes using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 2-4 (72% yield).

[0826] 5) Synthesis of intermediate 2-5

[0827] Intermediate 2-4 (1.0 eq), N 1 -(3,5-di-tert-butyl-[1,1':3',1”:3”,1”'-quaterphenyl]-2'-yl-2”,4”,5”,6”-d4)benzene-1,2-diamine (1.0 eq), 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos, 0.10 eq), tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3, 0.05 eq) and sodium tert-butoxide (NaOtBu, 3 eq) were dissolved in 1,4-dioxane and then stirred at 110 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to three extraction processes using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 2-5 (83% yield).

[0828] 6) Synthesis of intermediate 2-6

[0829] Intermediate 2-5 (1.0 eq) was dissolved in triethyl orthoformate (30 eq) and to it was added 37% DCI (1.5 eq). The mixed solution was then stirred at 80 °C overnight to obtain the reaction product. The reaction product was cooled at room temperature, concentrated and triethyl orthoformate was removed from the reaction product. Then, it was subjected to three extraction processes using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC:methanol) to synthesize intermediate 2-6 (73% yield).

[0830] 7) Synthesis of compound 2

[0831] Intermediate 2-6 (1.0 eq), potassium platinum (II) chloride (K2PtCl4, 1.1 eq) and 2,6-dimethylpyridine (4.0 eq) were dissolved in 1,2-dichlorobenzene (o-DCB) (0.05 M) and stirred at 120 °C for 18 hours under nitrogen condition to obtain a reaction product. The reaction product was cooled at room temperature, concentrated and 1,2-dichlorobenzene in the reaction product was removed. Then, it was subjected to a three extraction process by using dichloromethane and water to obtain an organic layer. The thus obtained organic layer was dried over anhydrous magnesium sulfate, concentrated, and then subjected to column chromatography (eluent: MC:hexane) to synthesize compound 2 (45% yield).

[0832] Electrospray ionization-liquid chromatography mass spectrometry (ESI-LCMS): [M] + : C 73 H 40 D 16 N6OPt, 1243.8 Synthesis Example 2: Synthesis of compound 48

[0833]

[0834] 1) Synthesis of intermediate 48-1

[0835] 2,4-dichloro-1,3,5-triazine (1.0 eq), 3,6-bis(methyl-d3)-9H-carbazole (1.0 eq) and potassium phosphate (3.0 eq) were dissolved in N,N-dimethylformamide (0.01 M) and stirred at 150 °C for 20 hours to obtain a reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three extraction process by using MC and water to obtain an organic layer. The thus obtained organic layer was dried over anhydrous magnesium sulfate, concentrated, and then subjected to column chromatography (eluent: MC:hexane) to synthesize intermediate 48-1 (38% yield).

[0836] 2) Synthesis of intermediate 48-2

[0837] Intermediate 48-1 (1.0 eq), 2-methoxy-6-phenyl-9H-carbazole (1.2 eq), copper (I) iodide (0.05 eq), potassium carbonate (3.0 eq), (±)-trans-1,2-diaminocyclohexane (0.10 eq) were dissolved in N,N-dimethylformamide (0.01 M) and stirred at 150 °C for 24 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-time extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 48-2 (80% yield).

[0838] 3) Synthesis of intermediate 48-3

[0839] Intermediate 48-2 (1.0 eq) was dissolved in dichloromethane (0.01 M) and then 1.0 M boron tribromide in dichloromethane (2 eq) was slowly added to it under nitrogen atmosphere at 0 °C and stirred at room temperature for 4 h to obtain the reaction product. The reaction product was subjected to a three-time extraction process using water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 48-3 (65% yield).

[0840] 4) Synthesis of intermediate 48-4

[0841] Intermediate 48-3 (1.0 eq), 1,3-dibromo benzene (2.0 eq), copper (I) iodide (0.05 eq), potassium phosphate (3.0 eq) and 2-picolinic acid (0.10 eq) were dissolved in dimethyl sulfoxide (0.01 M) and stirred at 100 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-time extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 48-4 (76% yield).

[0842] 5) Synthesis of intermediate 48-5

[0843] Intermediate 48-4 (1.0 eq), N 1-(5'-(tert-butyl)-3,5-bis(methyl-d3)-[1,1 ':3',1 " -terphenyl]-2'-yl)benzene-1,2-diamine (1.0 equiv), 2-dicyclohexylphosphino-2',6'-ditert-butylbiphenyl (XPhos, 0.10 equiv), tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3, 0.05 equiv) and sodium tert-butoxide (NaOtBu, 3 equiv) were dissolved in 1,4-dioxane and stirred at 110 °C for 2 h to obtain a reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-fold extraction process using MC and water to obtain an organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 48-5 (78% yield).

[0844] 6) Synthesis of intermediate 48-6

[0845] Intermediate 48-5 (1.0 equiv) was dissolved in triethyl orthoformate (30 equiv) and to it was added 37% DCI (1.5 equiv). The mixed solution was then stirred at 80 °C overnight to obtain a reaction product. The reaction product was cooled at room temperature, concentrated and triethyl orthoformate was removed from the reaction product. Then, it was subjected to a three-fold extraction process using MC and water to obtain an organic layer. The organic layer thus obtained was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC:methanol) to synthesize intermediate 48-6 (86% yield).

[0846] 7) Synthesis of compound 48

[0847] Intermediate 48-6 (1.0 equiv), potassium platinum(II) chloride (1.1 equiv) and 2,6-dimethylpyridine (4.0 equiv) were dissolved in 1,2-dichlorobenzene (0.05 M) and stirred at 120 °C for 18 h under nitrogen to obtain a reaction product. The reaction product was cooled to room temperature and 1,2-dichlorobenzene was removed from the reaction product. Then, it was subjected to a three-fold extraction process using dichloromethane and water to obtain an organic layer. The organic layer thus obtained was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC:hexane) to synthesize compound 48 (51 % yield).

[0848] ESI-LCMS: [M] + : C 72 H 43 D 12 N7OPt, 1240.9

[0849] Synthesis Example 3: Synthesis of compound 64

[0850]

[0851] 1) Synthesis of intermediate 64-1

[0852] Intermediate 64-1 (1.0 eq), 2-methoxy-9H-carbazole-5,6,7,8-d4 (1.2 eq), copper (I) iodide (0.05 eq), potassium carbonate (3.0 eq) and (±)-trans-1,2-diaminocyclohexane (0.10 eq) were dissolved in N,N-dimethylformamide (0.01 M) and stirred at 150 °C for 24 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-fold extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 64-2 (78% yield).

[0853] 2) Synthesis of intermediate 64-2

[0854] Intermediate 64-1 (1.0 eq), 2-methoxy-9H-carbazole-5,6,7,8-d4 (1.2 eq), copper (I) iodide (0.05 eq), potassium carbonate (3.0 eq) and (±)-trans-1,2-diaminocyclohexane (0.10 eq) were dissolved in N,N-dimethylformamide (0.01 M) and stirred at 150 °C for 24 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-fold extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 64-2 (78% yield).

[0855] 3) Synthesis of intermediate 64-3

[0856] Intermediate 64-2 (1.0 eq) was dissolved in dichloromethane (0.01 M), then to it 1.0 M boron tribromide in dichloromethane (2 eq) was slowly added under nitrogen atmosphere at 0 °C and stirred at room temperature for 4 h to obtain the reaction product. The reaction product was subjected to a three-fold extraction process using water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 64-3 (62% yield).

[0857] 4) Synthesis of intermediate 64-4

[0858] Intermediate 64-3 (1.0 eq), 1,3-dibromo benzene (2.0 eq), copper (I) iodide (0.05 eq), potassium phosphate (3.0 eq) and 2-picolinic acid (0.10 eq) were dissolved in dimethyl sulfoxide (0.01 M) and stirred at 100 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to three extraction processes using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC: Hex) to synthesize intermediate 64-4 (72% yield).

[0859] 5) Synthesis of intermediate 64-5

[0860] Intermediate 64-4 (1.0 eq), 12-(tert-butyl)-10-(5-(tert-butyl)-[1,1'-biphenyl]-3-yl-2,2',3',4,4',5',6,6'-d8)-9H-tetraphenyl[b,d,f,h]azepin-8-amine (1.0 eq), 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos, 0.10 eq), tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3, 0.05 eq) and sodium tert-butoxide (NaOtBu, 3 eq) were dissolved in 1,4-dioxane and then stirred at 110 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to three extraction processes using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC: Hex) to synthesize intermediate 64-5 (72% yield).

[0861] 6) Synthesis of intermediate 64-6

[0862] Intermediate 64-5 (1.0 eq) was dissolved in triethyl orthoformate (30 eq) and to it was added 37% DCl (1.5 eq). The mixed solution was then stirred at 80 °C overnight to obtain the reaction product. The reaction product was cooled at room temperature, concentrated and triethyl orthoformate was removed from the reaction product. Then, it was subjected to three extraction processes using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC: methanol) to synthesize intermediate 64-6 (84% yield).

[0863] 7) Synthesis of compound 64

[0864] Intermediate 64-6 (1.0 eq), potassium platinum (II) chloride (1.1 eq), 2,6-dimethylpyridine (4.0 eq) were dissolved in 1,2-dichlorobenzene (0.05 M) and stirred at 120 °C for 18 h under nitrogen condition to obtain the reaction product. The reaction product was cooled to room temperature, concentrated and 1,2-dichlorobenzene was removed from the reaction product. Then, it was subjected to three extraction processes by using dichloromethane and water to obtain the organic layer. The organic layer thus obtained was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC: hexane) to synthesize compound 64 (44% yield).

[0865] ESI-LCMS: [M] + : C 81 H 44 D 18 N6OPt, 1348.0

[0866] Synthesis Example 4: Synthesis of compound 79

[0867]

[0868] 1) Synthesis of intermediate 79-1

[0869] 2,4-dichloro-1,3,5-triazine (1.0 eq), 3,6-di-tert-butyl-9H-carbazole (1.0 eq) and potassium phosphate (3.0 eq) were dissolved in N,N-dimethylformamide (0.01 M) and then stirred at 150 °C for 20 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to three extraction processes by using MC and water to obtain the organic layer. The organic layer thus obtained was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC: hexane) to synthesize intermediate 79-1 (32% yield).

[0870] 2) Synthesis of intermediate 79-2

[0871] Intermediate 79-1 (1.0 eq), 2-methoxy-9H-carbazole-5,6,7,8-d4 (1.2 eq), copper (I) iodide (0.05 eq), potassium carbonate (3.0 eq) and (±)-trans-1,2-diaminocyclohexane (0.10 eq) were dissolved in N,N-dimethylformamide (0.01 M) and stirred at 150 °C for 24 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-fold extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 79-2 (82% yield).

[0872] 3) Synthesis of intermediate 79-3

[0873] Intermediate 79-2 (1.0 eq) was dissolved in dichloromethane (0.01 M) and then 1.0 M boron tribromide in dichloromethane (2 eq) was slowly added to it under nitrogen atmosphere at 0 °C and stirred at room temperature for 4 h to obtain the reaction product. The reaction product was subjected to a three-fold extraction process using water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 79-3 (65% yield).

[0874] 4) Synthesis of intermediate 79-4

[0875] Intermediate 79-3 (1.0 eq), 1,3-dibromo-5-(tert-butyl)benzene (2.0 eq), copper (I) iodide (0.05 eq), potassium phosphate (3.0 eq) and 2-picolinic acid (0.10 eq) were dissolved in dimethyl sulfoxide (0.01 M) and stirred at 100 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed therefrom by distillation under reduced pressure at 8 mbar, it was subjected to a three-fold extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 79-4 (76% yield).

[0876] 5) Synthesis of intermediate 79-5

[0877] Intermediate 79-4 (1.0 eq), 10-(5,5,8,8-tetramethyl-5,6,7,8- tetrahydronaphthalen-2-yl-1,3,4-d3)-9H-tetbenzo[b,d,f,h]azepin-8-amine (1.0 eq), 2- dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (XPhos, 0.10 eq), tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3, 0.05 eq) and sodium tert-butoxide (NaOtBu, 3 eq) were dissolved in 1,4-dioxane and stirred at 110 °C for 2 h to obtain the reaction product. After cooling the reaction product to room temperature, the solvent was removed from it by distillation under reduced pressure at 8 mbar, it was subjected to a three-fold extraction process using MC and water to obtain the organic layer. The obtained organic layer was dried over anhydrous magnesium sulfate, concentrated and purified using column chromatography (eluent: MC:Hex) to synthesize intermediate 79-5 (68% yield).

[0878] 6) Synthesis of intermediate 79-6

[0879] Intermediate 79-5 (1.0 eq) was dissolved in triethyl orthoformate (30 eq) and to it was added 37% DCl (1.5 eq). The mixed solution was then stirred at 80 °C overnight to obtain the reaction product. The reaction product was cooled at room temperature, concentrated and triethyl orthoformate was removed from the reaction product. Then, it was subjected to a three-fold extraction process using MC and water to obtain the organic layer. The organic layer thus obtained was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC:methanol) to synthesize intermediate 79-6 (73% yield).

[0880] 7) Synthesis of compound 79

[0881] Intermediate 79-6 (1.0 eq), potassium platinum(II) chloride (1.1 eq) and 2,6- dimethylpyridine (4.0 eq) were dissolved in 1,2-dichlorobenzene (0.05 M) and stirred at 120 °C for 18 h under nitrogen to obtain the reaction product. The reaction product was cooled at room temperature, concentrated and 1,2-dichlorobenzene was removed from the reaction product. Then, it was subjected to a three-fold extraction process using dichloromethane and water to obtain the organic layer. The organic layer thus obtained was dried over anhydrous magnesium sulfate, concentrated and then subjected to column chromatography (eluent: MC:hexane) to synthesize compound 79 (47% yield).

[0882] ESI-LCMS: [M] + : C 84 H 68 D7N7OPt, 1400.2

[0883] LC-MS values ​​of each of the compounds synthesized according to the synthetic examples are shown in Table 1. In addition to the compounds synthesized in the synthetic examples, those skilled in the art can readily recognize synthetic methods for other compounds by referring to the synthetic routes and source materials.

[0884] Table 1

[0885]

[0886]

[0887] The final compounds from Table 1 above were further purified to the level of final purity by sublimation purification, and the obtained compounds were confirmed by ESI-LCMS as compound 2, compound 48, compound 64 and compound 79, respectively.

[0888] Evaluation Example 1

[0889] In this disclosure, the torsion angle refers to the angle formed by planes A1 and A2 in Equation 1S. In this respect, plane A1 includes M1 (e.g., Pt), A... 40 Any point within and containing A 50 Any point within the ring, and plane A2 contains M1 and A 30 Any point within N and any point within the hexagonal ring containing N (i.e., the six-membered ring containing N) (see Equation 1S).

[0890] Formula 1S

[0891]

[0892] In this disclosure, the torsion angle is calculated using a density functional theory (DFT) method on a Gaussian program based on quantum chemical calculations at the B3LYP / 6-311G(d,p) level, and the torsion angle is calculated for the structure of the organometallic compound improved or optimized with S0.

[0893] The torsion angles were calculated for compounds 2, 48, 64, 79, and comparative example compound 2 (Ref 2). The results are shown in Table 2.

[0894] Table 2

[0895]

[0896] Referring to Table 2, compounds 2, 48, 64, and 79 all exhibit controlled or selective intermolecular distortions compared to comparative example compound 2 (Ref 2). The structure of comparative example compound 2 (Ref 2) can refer to the structure of compound Ref 2. Therefore, it can be seen that the organometallic compounds represented by Formula 1 exhibit superior or desirable material stability compared to Ref 2. For example, compounds 2, 48, 64, and 79 exhibit controlled or selective intermolecular distortions compared to comparative example compound 2 (Ref 2). The structure of comparative example compound 2 can correspond to the structure of compound Ref 2. Therefore, it is evident that the organometallic compounds represented by Formula 1 exhibit superior or desirable material stability compared to Ref 2.

[0897] Example 1

[0898] As the anode, 15 Ω / cm can be obtained from Corning Inc. 2 ITO glass substrates were cut to dimensions of 50 mm × 50 mm × 0.7 mm, ultrasonically treated with isopropanol and (then) pure water for 5 minutes each, and then cleaned by irradiation with ultraviolet light and exposure to ozone for 30 minutes. The resulting ITO glass substrates were then loaded onto a vacuum deposition apparatus. On the glass substrates, firstly, 2-TNATA, a suitable compound in the art, was vacuum deposited to form a structure with… A hole injection layer of a certain thickness is formed, and 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (hereinafter referred to as NPB) is vacuum deposited as a suitable hole transport compound to form a hole transport compound. A hole transport layer of a certain thickness was formed. Compound 2 (15 wt% of total weight relative to the emitter layer) as a phosphorescent photosensitizer was co-deposited on the hole transport layer with an ETH2:HTH15 mixed host (84 wt% of total weight relative to the emitter layer) in a weight ratio of 3.5:6.5 and DFD29 (1 wt% of total weight relative to the emitter layer) as a luminescent dopant to form a structure with… An emission layer of a certain thickness is formed. Then, compound HBL-1 is vacuum deposited on the emission layer to form an emission layer with [missing information]. A hole-blocking layer of a certain thickness was then deposited. Subsequently, a hybrid layer comprising CNNPTRZ and Liq (in a 4:6 weight ratio) was deposited on the hole-blocking layer to form a layer with... An electron transport layer of a certain thickness is formed, and Yb is deposited on the electron transport layer to form a layer with [missing information]. An electron-injected layer of a certain thickness was formed, and Mg was vacuum-deposited on the electron-injected layer to form a layer with [missing information]. The cathode (anode) of a certain thickness is used to complete the fabrication of organic light-emitting devices.

[0899]

[0900] Examples 2 to 4 and Comparative Examples 1 to 3

[0901] In addition to using the compounds shown in Table 3 as a material for the emission layer, the organic light emitting device was manufactured in substantially the same manner as in Example 1.

[0902] Evaluation of Example 2

[0903] For each of the organic light emitting devices manufactured in Examples 1 to 4 and Comparative Examples 1 to 3, the driving voltage (V), the emission efficiency (cd / A), the emission color, and the lifetime ratio (T 2 ) at 1,000 cd / m 95 were measured by using Keithley MU 236 and a luminance meter PR650. The results thereof are shown in Table 3. In Table 3, the lifetime (T 95 ) is a measure of time (hour) expressed as a relative value (%) with respect to Comparative Example 2, which is the time taken for the luminance to reach 95% of the initial luminance.

[0904] Table 3

[0905]

[0906]

[0907] Referring to Table 3, it is confirmed that each of the organic light emitting devices of Examples 1 to 4 has a lower driving voltage, a higher emission efficiency, and a significantly superior lifetime, compared to the organic light emitting devices of Comparative Examples 1 to 3.

[0908] According to one or more embodiments, by using the organometallic compound represented by Formula 1, a light emitting device having a reduced driving voltage, improved color purity and efficiency, and increased lifetime, and a high-quality electronic device including the same can be manufactured.

[0909] In the present disclosure, it will be understood that the terms "comprise" and variations thereof, "contain" and variations thereof, or "have" and variations thereof, indicate the presence of stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0910] In the context of the present application, the term "use" and variations thereof can be considered synonymous with the term "utilize" and variations thereof, unless otherwise defined.

[0911] Throughout this disclosure, when referring to a component such as a layer, film, region, or plate being disposed "on" another component, it will be understood that it can be directly on the other component, or yet another component can be disposed therebetween. In some embodiments, "directly on" can refer to the absence of additional layers, films, regions, plates, etc. between a layer, film, region, plate, etc. and another part. For example, "directly on" can refer to the placement of two layers or two members without the use of additional members, such as adhesive members, located therebetween.

[0912] In the present disclosure, although the terms "first", "second" and the like can be used herein to describe one or more elements, components, regions and / or layers, these elements, components, regions and / or layers should not be limited by these terms. These terms are only used to distinguish one component from another.

[0913] As utilized herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "can" and "could" are used herein, these terms are intended to mean "one or more embodiments of the present disclosure".

[0914] As utilized herein, the terms "substantially", "approximately", or similar terms are used as an approximation term and not as an exact term, and are intended to account for variations that would be recognized by one of ordinary skill in the art as being equivalent to the recited value. As used herein, "approximately" includes the recited value and means within an acceptable range of deviation of the particular value as determined by one of ordinary skill in the art considering the measurement at issue and the error in measuring the particular quantity (i.e., the limitations of the measurement system). For example, "approximately" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the recited value.

[0915] Any numerical range recited herein is intended to include all sub-ranges of the same whole number precision subsumed within the recited range. For example, a range of "1.0 to 10.0" is intended to include all sub-ranges between (and including) the recited minimum value of 1.0 and the recited maximum value of 10.0, e.g., 2.4 to 7.6, 3.5 to 9.8, etc. Any maximum numerical limitation recited herein is intended to include all lower numerical limitations subsumed therein and any minimum numerical limitation recited in this disclosure is intended to include all higher numerical limitations subsumed therein. Accordingly, Applicant reserves the right to amend the disclosure, including the claims, to expressly recite any sub-range including any minimum or maximum numerical limitation recited herein.

[0916] The light emitting device, light emitting apparatus, display apparatus, electronic apparatus, electronic device, apparatus manufacturing the same, or any other related apparatus or component according to embodiments of the disclosure described herein can be implemented using any suitable hardware, firmware (e.g., application specific integrated circuit), software, or combination thereof. For example, various components of the apparatus can be formed on one integrated circuit (IC) chip or on separate IC chips. Also, various components of the apparatus can be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on one substrate. Also, various components of the apparatus can be processes or threads running on one or more processors in one or more computing devices, executing computer program instructions and interacting with other system components for performing the various functionalities described herein. The computer program instructions are stored in a memory which can be implemented in a computing device using a standard memory device, such as random access memory (RAM). The computer program instructions can also be stored in another non-transitory computer readable medium such as a compact disc (CD), flash drive, etc. Also, a person of ordinary skill in the art should recognize that the functionality of various computing devices can be combined or integrated into a single computing device, or the functionality of a particular computing device can be distributed across one or more other computing devices, without departing from the scope of embodiments of the disclosure.

[0917] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as being applicable to other similar features or aspects in other embodiments. While one or more embodiments have been described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes in form and details can be made therein without departing from the spirit and scope as defined by the following claims and their equivalents.

Claims

1. An organic light emitting device comprising: a first electrode; a second electrode opposite to the first electrode; and an intermediate layer between the first electrode and the second electrode and comprising an emission layer; wherein the organic light emitting device further comprises an organometallic compound represented by Formula 1: Formula 1 wherein, in Formula 1, M1 is platinum, palladium, copper, silver, gold, rhodium, iridium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium, or thulium, X1 is C(R1) or N, A 10 , A 20 , A 30 , A 40 and A 50 are each independently C5-C 60 carbocyclyl or C1-C 60 heterocyclyl, Y2 and Y3 are each C or N, T1 to T4 each represent a chemical bond, a11, a12, and a13 are each independently an integer of 0 to 5, L 11 to L 13 are each independently a single bond, *-O-*, *-S-*, *-C(R2)(R3)-*, *-C(R2)=*-, *=C(R2)-*, *-C(R2)=C(R3)-*, *-C(=0)-*, *-C(=S)-*, *-C=C-*, *-B(R2)-*, *-N(R2)-*, *-P(R2)-*, *-Si(R2)(R3)-*, *-P(=0)(R2)-*, or *-Ge(R2)(R3)-*, b10, b20, b30, b40, and b50 are each independently an integer of 0 to 10, Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R 50 Each group is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, unsubstituted or substituted with at least one R. 10a C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkyne group, unsubstituted or substituted with at least one R 10a C1-C 60 Alkyl, unsubstituted, or substituted with at least one R 10a C3-C 10 Cycloalkyl, unsubstituted or substituted with at least one R 10a C1-C 10 Heterocyclic alkyl, unsubstituted or substituted with at least one R 10a C3-C 10 Cycloalkenyl, unsubstituted or substituted with at least one R 10a C1-C 10 Heterocyclic alkenyl, unsubstituted or substituted with at least one R 10a C6-C 60 Aryl, unsubstituted or substituted with at least one R 10a C6-C 60 aryloxy group, unsubstituted or substituted with at least one R 10a C6-C 60 Aryl thiols, unsubstituted or substituted with at least one R 10a C1-C 60 heteroaryl, unsubstituted or substituted with at least one R 10a C1-C 60 Heteroaryl groups, unsubstituted or substituted with at least one R 10a C1-C 60 Heteroaryl thiols, unsubstituted or substituted with at least one R 10a The monovalent non-aromatic condensed polycyclic group, unsubstituted or substituted, has at least one R 10a The monovalent non-aromatic condensed heterocyclic groups are -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2) or -P(=S)(Q1)(Q2). deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, or a hydrazone group; Selected from Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R 50 Two or more adjacent groups may optionally combine to form an unsubstituted or substituted group with at least one R 10a C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group, R 10a is: 2.The organic light emitting device of claim 1, wherein: unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ) or any combination thereof; C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 alkoxy; unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ) or any combination thereof; or 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, or C6-C 60 arylthio; or -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), and Q1to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 are each independently: hydrogen; deuterium; -F; -CI; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 alkyl; C2-C 60 alkenyl; C2-C 60 alkynyl; C1-C 60 alkoxy; or are each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C1-C 60 alkoxy, phenyl, biphenyl, or any combination thereof. C3-C 60 carbocyclyl, or C1-C 60 heterocyclyl. the emission layer comprises a host and a dopant, and the dopant comprises the organometallic compound. 3.The organic light emitting device of claim 1, further comprising: wherein the organometallic compound, the second compound, the third compound, and the fourth compound are different from each other: a second compound comprising at least one π-electron poor nitrogen-containing C1-C 60 heterocyclyl, the third compound comprising a group represented by Formula 3, the fourth compound emitting delayed fluorescence, Formula 3 wherein, in Formula 3, * indicates a bonding site to an atom included in a remaining portion of the third compound other than the group represented by Formula 3. ring CY 71 and ring CY 72 each independently is a π-electron rich C3-C 60 cycloalkyl group or a pyridyl group, X 71 is a single bond or a linker comprising O, S, N, B, C, Si, or any combination thereof, and 4.The organic light emitting device of claim 3, wherein: the second compound comprises a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or any combination thereof, and the fourth compound is a compound comprising at least one ring group including boron and nitrogen as ring-forming atoms. the emission layer comprises:

5. The light emitting device of claim 3, wherein, the organometallic compound; and the second compound, the third compound, the fourth compound, or any combination thereof, and the emission layer emits blue light. 6.An electronic device comprising the organic light emitting device of claim 1. 7.The electronic device of claim 6, further comprising: a thin film transistor, wherein the thin film transistor comprises a source electrode and a drain electrode, and the first electrode of the organic light emitting device is electrically connected to the source electrode or the drain electrode of the thin film transistor. 8.The electronic device of claim 6, further comprising: a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof. 9.An electronic apparatus comprising an organic light emitting device, wherein: the organic light emitting device comprises a first electrode, a second electrode opposite to the first electrode, and an intermediate layer between the first electrode and the second electrode and comprising an emission layer, wherein the organic light emitting device further comprises an organometallic compound represented by Formula 1: Formula 1 wherein, in Formula 1, M1 is platinum, palladium, copper, silver, gold, rhodium, iridium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium, or thulium, X1 is C(R1) or N, A 10 , A 20 , A 30 , A 40 and A 50 are each independently C5-C 60 carbocyclyl or C1-C 60 heterocyclyl, Y2 and Y3 are each C or N, T1 to T4 each represent a chemical bond, a11, a12, and a13 are each independently an integer of 0 to 5, L 11 to L 13 each independently is a single bond, *-O-*, *-S-*, *-C(R2)(R3)-*, *-C(R2)=*-, *=C(R2)-*, *-C(R2)=C(R3)-*, *-C(=0)-*, *-C(=S)-*, *-C=C-*, *-B(R2)-*, *-N(R2)-*, *-P(R2)-*, *-Si(R2)(R3)-*, *-P(=0)(R2)-* or *-Ge(R2)(R3)-*, ​ Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R 50 Each group is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, unsubstituted or substituted with at least one R. 10a C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkyne group, unsubstituted or substituted with at least one R 10a C1-C 60 Alkyloxy, unsubstituted, or substituted with at least one R 10a C3-C 10 Cycloalkyl, unsubstituted or substituted with at least one R 10a C1-C 10 Heterocyclic alkyl, unsubstituted or substituted with at least one R 10a C3-C 10 Cycloalkenyl, unsubstituted or substituted with at least one R 10a C1-C 10 Heterocyclic alkenyl, unsubstituted or substituted with at least one R 10a C6-C 60 Aryl, unsubstituted or substituted with at least one R 10a C6-C 60 aryloxy group, unsubstituted or substituted with at least one R 10a C6-C 60 Aryl thiols, unsubstituted or substituted with at least one R 10a C1-C 60 heteroaryl, unsubstituted or substituted with at least one R 10a C1-C 60 Heteroaryl groups, unsubstituted or substituted with at least one R 10a C1-C 60 Heteroaryl thiols, unsubstituted or substituted with at least one R 10a The monovalent non-aromatic condensed polycyclic group, unsubstituted or substituted, has at least one R 10a The monovalent non-aromatic condensed heterocyclic groups are -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2) or -P(=S)(Q1)(Q2). b10, b20, b30, b40, and b50 are each independently an integer of 0 to 10, two or more adjacent groups selected from Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 are optionally joined to form an unsubstituted or substituted C5-C 10a carbocyclyl or C1-C 60 heterocyclyl, wherein the carbocyclyl or heterocyclyl is unsubstituted or substituted with at least one R 10a , wherein R 60 is as defined above. R 10a is: deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidine group, a hydrazine group, or a hydrazone group; unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ) or any combination thereof; and 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 alkoxy; unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ) or any combination thereof; or 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, or C6-C 60 arylthio; or -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), or -P(=O)(Q 31 )(Q 32 ), and Q1to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 are each independently: hydrogen; deuterium; -F; -CI; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 alkyl; C2-C 60 alkenyl; C2-C 60 alkynyl; C1-C 60 alkoxy; or none, or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C1-C 60 alkoxy, phenyl, biphenyl, or any combination thereof. C3-C 60 carbocyclyl, or C1-C 60 heterocyclyl. 10.The electronic device of claim 9, wherein, the electronic device is at least one of a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a telephone, a tablet personal computer, a phablet, a personal digital assistant, a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro display, a three-dimensional display, a virtual reality display, an augmented reality display, a vehicle, a video wall having a plurality of displays spliced together, a theater screen, a stadium screen, a light therapy device, and a sign. 11.An organometallic compound represented by Formula 1: Formula 1 wherein, In Formula 1, M1 is platinum, palladium, copper, silver, gold, rhodium, iridium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium, or thulium, A 10 、A 20 、A 30 、A 40 and A 50 are each independently C5-C 60 carbocyclyl or C1-C 60 heterocyclyl, X1 is C(R1) or N, Y2 and Y3 are each C or N, T1 to T4 each represent a bond, L 11 to L 13 are each independently a single bond, *-O-*, *-S-*, *-C(R2)(R3)-*, *-C(R2)=*-, *=C(R2)-*, *-C(R2)=C(R3)-*, *-C(=0)-*, *-C(=S)-*, *-C=C-*, *-B(R2)-*, *-N(R2)-*, *-P(R2)-*, *-Si(R2)(R3)-*, *-P(=0)(R2)-*, or *-Ge(R2)(R3)-*, a11, a12, and a13 are each independently an integer of 0 to 5, Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 and R 50 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, hydrazono, unsubstituted or substituted with at least one R 10a C1-C 60 alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 alkoxy, unsubstituted or substituted with at least one R 10a C3-C 10 cycloalkyl, unsubstituted or substituted with at least one R 10a C1-C 10 heterocycloalkyl, unsubstituted or substituted with at least one R 10a C3-C 10 cycloalkenyl, unsubstituted or substituted with at least one R 10a C1-C 10 heterocycloalkenyl, unsubstituted or substituted with at least one R 10a C6-C 60 aryl, unsubstituted or substituted with at least one R 10a C6-C 60 aryloxy, unsubstituted or substituted with at least one R 10a C6-C 60 arylthio, unsubstituted or substituted with at least one R 10a C1-C 60 heteroaryl, unsubstituted or substituted with at least one R 10a C1-C 60 heteroaryloxy, unsubstituted or substituted with at least one R 10a C1-C 60 heteroarylthio, unsubstituted or substituted with at least one R 10a monovalent, non-aromatic condensed polycyclic group, unsubstituted or substituted with at least one R 10a monovalent, non-aromatic condensed heteropolycyclic group, -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2), or -P(=S)(Q1)(Q2), b10, b20, b30, b40, and b50 are each independently an integer of 0 to 10, Selected from Ar1, R1, R2, R3, R 10 R 20 R 30 R 40 and R 50 Two or more adjacent groups may optionally combine to form an unsubstituted or substituted group with at least one R 10a C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group, R 10a is: deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidine group, a hydrazine group, or a hydrazone group; unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ) or any combination thereof; and 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 alkoxy; unsubstituted or substituted with deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy, C6-C 60 arylthio, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ) or any combination thereof; or 60 carbocyclyl, C1-C 60 heterocyclyl, C6-C 60 aryloxy or C6-C 60 arylthio; or -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), and Q1to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 are each independently: hydrogen; deuterium; -F; -CI; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 alkyl; C2-C 60 alkenyl; C2-C 60 alkynyl; C1-C 60 alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C1-C 60 alkoxy, phenyl, biphenyl, or C3-C 60 carbocyclyl, or C1-C 60 heterocyclyl. 12.The organometallic compound of claim 11, wherein, M1 is platinum, palladium, or gold. 13.The organometallic compound of claim 11, wherein, A 10 、A 20 、A 30 、A 40 and A 50 are each independently a group represented by any one selected from the group consisting of Formula 2-1 to Formula 2-43: wherein, in Formulae 2-1 to 2-43, X 21 to X 23 each independently is C(Z 24 ) or C-*, wherein at least two of X 21 to X 23 are C-*, X 24 is N-*, and X 25 and X 26 are each independently C(Z 24 ) or C-*, wherein at least one of X 25 and X 26 is C-*, X 27 and X 28 are each independently N, N(Z 25 ) or N-*, X 29 is C(Z 24 ) or C-*, wherein i) at least one of X 27 and X 28 is N-*, and X 29 is C-*, or ii) X 27 and X 28 are each N-*, and X 29 is C(Z 24 ), Z 21 to Z 25 each independently is deuterium, -F, -CI, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, hydrazono, C1-C 20 alkyl, C2-C 20 alkenyl, C2-C 20 alkynyl, C1-C 20 alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, phenanthryl, anthryl, benzo[9,10]phenanthryl, pyridyl, pyrimidyl, carbazolyl, or triazinyl, c21 is 1, 2, or 3, c22 is 1, 2, 3, 4, or 5, c23 is 1, 2, 3, or 4, c24 is 1 or 2, and * indicates a bonding site to an adjacent atom. 14.The organometallic compound of claim 11, wherein, Y2 and Y3 are each C. 15.The organometallic compound of claim 11, wherein, L 11 to L 13 each independently is a single bond, *-O-*, *-S-*, *-N(R2)-*, *-C(R2)(R3)-*, *-Si(R2)(R3)-* or *-B(R2)-*. 16.The organometallic compound of claim 11, wherein, Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 are each independently: hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, C1-C 20 alkyl, or C1-C 20 alkoxy; Ci-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C3-C6cycloalkyl, C4-C8 20 Ci-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C3-C6cycloalkyl, C4-C8 20 Ci-C6alkyl, C2-C6alkenyl, C2-C6alkynyl, C3-C6cycloalkyl, C4-C8 a group represented by one selected from among Formulae 5-1 to 5-26, 6-1 to 6-55, and 7-1 to 7-5, two or more adjacent groups selected from Ar1, R1, R2, R3, R 10 , R 20 , R 30 , R 40 , and R 50 may optionally be combined with each other to form: a cyclopentane group, a cyclohexane group, a cycloheptane group, a phenyl group, a naphthyl group, a fluorene group, or a carbazole group; or a cyclopentane group, a cyclohexane group, a cycloheptane group, a phenyl group, a naphthyl group, a fluorene group, or a carbazole group each substituted with deuterium, -F, -Cl, -Br, -I, a cyano group, a phenyl group, a biphenyl group, or any combination thereof: wherein, in Formulae 5-1 to 5-26, 6-1 to 6-55, and 7-1 to 7-5, Y 31 and Y 32 are each independently O, S, C(Z 33 )(Z 34 ), N(Z 33 ) or Si(Z 33 )(Z 34 ), Z 31 through Z 34 are each independently selected from the group consisting of hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazino, hydrazono, C1-C 20 alkyl, C2-C 20 alkenyl, C2-C 20 alkynyl, C1-C 20 alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, phenanthryl, anthryl, benzo[9,10]phenanthryl, pyridyl, pyrimidyl, carbazolyl and triazinyl, e2 is 1 or 2, e3 is an integer of 1 to 3, e4 is an integer of 1 to 4, e5 is an integer of 1 to 5, e6 is an integer of 1 to 6, e7 is an integer of 1 to 7, e9 is an integer of 1 to 9, e11 is an integer of 1 to 11, and * indicates a binding site with an adjacent atom.

17. The organometallic compound according to claim 16, wherein, Ar1 is any one selected from the group consisting of the groups represented by formulae 7-1 to 7-5.

18. The organometallic compound according to claim 11, wherein, The organometallic compound represented by formula 1 is an organometallic compound represented by formula 1-1 or formula 1-2: Formula 1-1 Formula 1-2 wherein, in formulae 1-1 and 1-2, M1, Ar1, L 11 , L 12 and X1are the same as described in Formula 1, X 11 is C(R 11 ) or N, X 12 is C(R 12 ) or N, X 13 is C(R 13 ) or N, and X 14 is C(R 14 ) or N, X 21 is C(R 21 ) or N, X 22 is C(R 22 ) or N, X 23 is C(R 23 ) or N, and X 24 is C(R 24 ) or N, X 31 is C(R 31 ) or N, X 32 is C(R 32 ) or N, X 33 is C(R 33 ) or N, X 34 is C(R 34 ) or N, X 35 is C(R 35 ) or N, and X 36 is C(R 36 ) or N, X 41 is C(R 41 ) or N, X 42 is C(R 42 ) or N, and X 43 is C(R 43 ) or N, X 51 is C(R 51 ) or N, X 52 is C(R 52 ) or N, X 53 is C(R 53 ) or N, and X 54 is C(R 54 ) or N, R 11 to R 14 each independently is the same as described for R 10 in Formula 1. R 21 to R 24 are each independently the same as described for R 20 in Formula 1. R 31 to R 36 each independently are the same as described for R 30 in Formula 1, R 41 to R 43 each independently is the same as described for R 40 in Formula 1, R 51 to R 54 each independently is the same as described for R 50 in Formula 1, and Selected from Ar1, R1, R2, R3, R 11 To R 14 R 21 To R 24 R 31 To R 36 R 41 To R 43 and R 51 To R 54 Two or more adjacent groups may optionally combine with each other to form an unsubstituted or substituted group having at least one R 10a C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group.

19. The organometallic compound according to claim 11, wherein, The organometallic compound represented by formula 1 is an organometallic compound represented by formula 1A or formula 1B: Formula 1A Formula 1B wherein, in formulae 1A and 1B, M1, L 12 and X1are the same as described in Formula 1, X 11 is C(R 11 ) or N, X 12 is C(R 12 ) or N, X 13 is C(R 13 ) or N, and X 14 is C(R 14 ) or N, X 21 is C(R 21 ) or N, X 22 is C(R 22 ) or N, X 23 is C(R 23 ) or N, and X 24 is C(R 24 ) or N, X 31 is C(R 31 ) or N, X 32 is C(R 32 ) or N, X 33 is C(R 33 ) or N, X 34 is C(R 34 ) or N, X 35 is C(R 35 ) or N, and X 36 is C(R 36 ) or N, X 41 is C(R 41 ) or N, X 42 is C(R 42 ) or N, and X 43 is C(R 43 ) or N, X 51 is C(R 51 ) or N, X 52 is C(R 52 ) or N, X 53 is C(R 53 ) or N, and X 54 is C(R 54 ) or N, R 11 to R 14 each independently are the same as described for R 10 in Formula 1. R 21 to R 24 are each independently the same as described for R 20 in Formula 1. R 31 to R 36 each independently is the same as described for R 30 in Formula 1, R 41 to R 43 are each independently the same as described for R 40 in Formula 1. R 51 to R 54 each independently are the same as described for R 50 in Formula 1, R 10b , R 10c , and R 10d are each independently the same as described for R 10a in Formula 1, n3 is an integer of 0 to 3, n4 is an integer of 0 to 4, n5 is an integer of 0 to 5, and Selected from R 10b R 10c R 10d R1, R2, R3, R 11 To R 14 R 21 To R 24 R 31 To R 36 R 41 To R 43 and R 51 To R 54 Two or more adjacent groups may optionally combine with each other to form an unsubstituted or substituted group having at least one R 10a C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R. 10a C1-C 60 Heterocyclic group.

20. The organometallic compound according to claim 11, wherein, The organometallic compound represented by formula 1 is any one selected from compounds 1 to 96:

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