Light-emitting device including organometallic compound, electronic device and electronic equipment each including light-emitting device, and organometallic compound

Abstract

The invention provides a light emitting device. The light emitting device includes a first electrode, a second electrode opposed to the first electrode, an interlayer between the first electrode and the second electrode and including an emission layer, and an organometallic compound represented by Formula 1. In addition, an electronic apparatus and an electronic device each including a light-emitting device, and an organometallic compound represented by Formula 1 are provided. Formula 1

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2024-0132005, filed on September 27, 2024, with the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] One or more embodiments of this disclosure relate to light-emitting devices including organometallic compounds, electronic devices and electronic equipment each including a light-emitting device, and organometallic compounds. Background Technology

[0004] Among light-emitting devices, self-emitting devices (e.g., organic light-emitting devices) are attracting attention for their relatively wide viewing angle, high contrast, short response time, and / or superior or desirable (appropriate) characteristics in terms of brightness, driving voltage, and / or response speed.

[0005] In a light-emitting device, a first electrode is arranged on a substrate, followed by a hole transport region, an emitter layer, an electron transport region, and a second electrode. Holes supplied from the first electrode move towards the emitter layer through the hole transport region, while electrons supplied from the second electrode move towards the emitter layer through the electron transport region. These charge carriers, namely holes and electrons, recombine in the emitter layer to generate excitons. Excitons can transition from excited states to the ground state, thereby generating light. Summary of the Invention

[0006] One or more aspects of embodiments of this disclosure relate to light-emitting devices including organometallic compounds, electronic devices and electronic equipment each including a light-emitting device, and organometallic compounds.

[0007] Other aspects will be set forth in part in the description which follows, and in part will be apparent from the description or may be learned by practice of the embodiments presented in this disclosure.

[0008] According to one or more embodiments of this disclosure, the light-emitting device includes:

[0009] First electrode,

[0010] The second electrode is opposite to the first electrode (e.g., facing the first electrode).

[0011] An interlayer comprising an emission layer, for example, disposed between the first and second electrodes, and including the emission layer.

[0012] Organometallic compounds represented by Formula 1:

[0013] Formula 1

[0014]

[0015] In Equation 1,

[0016] M can be platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm).

[0017] X1 to X4 can each be C or N independently.

[0018] Rings CY1 to CY4 can each be independently C5-C. 30 Carbocyclic or C1-C 30 Heterocyclic group,

[0019] L1 to L3 can each be a single bond, *-C(R) 1a (R) 1b )-*'、*-C(R 1a )=*'、*=C(R 1a )-*'、*-C(R 1a )=C(R 1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R 1a )-*'、*-N(R 1a )-*'、*-O-*'、*-P(R 1a )-*'、*-Al(R 1a )-*、*-Si(R 1a (R) 1b )-*'、*-P(=O)(R 1a )-*', *-S-*', *-S(=O)-*', *-S(=O)2-*' or *-Ge(R 1a (R) 1b )-*', where * and *' each indicate a binding site with an adjacent atom,

[0020] n1 to n3 can each be an integer selected from 1 to 10 independently.

[0021] Z 31 It can be N or B.

[0022] Z 32 It can be O, S or Se.

[0023] Z 33 It can be O, S, B(R'), N(R'), C(R')(R”) or Si(R')(R”).

[0024] R1 to R4, R 1a R1b R' and R" can each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 60 Alkyl thioyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -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),

[0025] a1 to a4 can each be an integer selected from 1 to 20 independently.

[0026] Selected from R1 with quantity a1, R2 with quantity a2, R3 with quantity a3, R4 with quantity a4, R 1a R 1b Two or more adjacent R' and R' may optionally be bonded together to form an unsubstituted or compounded by at least one R'. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0027] R 10a Possible forms:

[0028] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano or nitro;

[0029] Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkoxy groups: 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, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -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;

[0030] Each of the following C3-Cs that are not substituted or are substituted by: 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: 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 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -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

[0031] -O(Q 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -P(Q) 31 (Q) 32 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ),and

[0032] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 Aryl alkyl group; or C2-C 60 Heteroalkyl groups.

[0033] According to one or more embodiments of this disclosure, the electronic device includes a light-emitting device.

[0034] According to one or more embodiments of this disclosure, the electronic device includes a light-emitting device.

[0035] According to one or more embodiments of this disclosure, organometallic compounds represented by Formula 1 are provided. Attached Figure Description

[0036] The accompanying drawings are included to provide a further understanding of this disclosure, and are incorporated in and constitute a part of this disclosure. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure. Certain embodiments of the present disclosure and other aspects, features, and advantages will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0037] Figure 1 This is a schematic cross-sectional view of the structure of a light-emitting device according to one or more embodiments of the present disclosure;

[0038] Figure 2 This is a schematic cross-sectional view of the structure of an electronic device according to one or more embodiments of the present disclosure;

[0039] Figure 3 This is a schematic cross-sectional view of the structure of an electronic device according to one or more embodiments of the present disclosure;

[0040] Figure 4 A schematic perspective view of an electronic device including a light-emitting device according to one or more embodiments of the present disclosure;

[0041] Figure 5 This is a schematic diagram of the exterior of a vehicle as an electronic device including a light-emitting device, according to one or more embodiments of this disclosure; and

[0042] Figures 6A to 6C Each of these are schematic diagrams of the interior of a vehicle according to one or more embodiments of the present disclosure. Detailed Implementation

[0043] Reference will now be made in more detail to one or more embodiments, examples of which are illustrated in the accompanying drawings, wherein throughout this disclosure, the same reference numerals refer to the same elements, and for the sake of brevity, their repeated descriptions are omitted. In this regard, the presented embodiments may take different forms and should not be construed as limited to the descriptions set forth herein. Accordingly, one or more embodiments are described in more detail only with reference to the accompanying drawings to explain aspects of this disclosure. As used herein, the terms “and / or” or “or” may include any and all combinations of one or more associated enumerated items. Throughout this disclosure, when expressions such as “at least one of…”, “one of…”, and “selected from…” precede / follow a list of elements, they modify the entire list of elements without modifying any individual element of the list. For example, "at least one of a, b, and c", "at least one selected from a, b, and c", "at least one selected from a to c", etc., can indicate only a, only b, only c, both a and b (e.g., a and b simultaneously), both a and c (e.g., a and c simultaneously), both b and c (e.g., b and c simultaneously), all a, b, and c, or variations thereof. Depending on the specific context, the " / " used herein can be interpreted as "and" or "or".

[0044] According to one or more embodiments of this disclosure, the light-emitting device includes:

[0045] First electrode;

[0046] A second electrode opposite to the first electrode (e.g., facing the first electrode);

[0047] An interlayer comprising (for example, arranged between) the first and second electrodes and including the emission layer; and

[0048] Organometallic compounds represented by Formula 1:

[0049] Formula 1

[0050]

[0051] For a description of Equation 1, please refer to other parts of this disclosure.

[0052] In one or more embodiments,

[0053] The first electrode of the light-emitting device can be the anode.

[0054] The second electrode of the light-emitting device can be a cathode.

[0055] The interlayer may further include a hole transport region between the first electrode and the emitter layer, and an electron transport region between the emitter layer and the second electrode.

[0056] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof, and

[0057] The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0058] In one or more embodiments, the interlayer of the light-emitting device may include an organometallic compound represented by Formula 1.

[0059] In one or more embodiments, the emitting layer of the light-emitting device may include an organometallic compound represented by Formula 1 (e.g., as a first compound).

[0060] In one or more embodiments, the emitting layer of the light-emitting device may include a dopant and a host, and an organometallic compound represented by Formula 1 may be included in the dopant. For example, an organometallic compound represented by Formula 1 may act as a dopant. For example, in one or more embodiments, the emitting layer may emit blue or green light. Blue light may have a maximum emission wavelength (e.g., the wavelength of maximum emission intensity) in the range of, for example, from about 430 nanometers (nm) to about 480 nm. Green light may have a maximum emission wavelength (e.g., the wavelength of maximum emission intensity) in the range of, for example, from about 500 nm to about 570 nm.

[0061] In one or more embodiments, the electron transport region of the light-emitting device may include a hole-blocking layer, and the hole-blocking layer may include a phosphine oxide compound, a silicon compound, or any combination thereof. In one or more embodiments, the hole-blocking layer may directly contact the emitting layer.

[0062] In one or more embodiments, the light-emitting device may further include: a nitrogen-containing C1-C element that is deficient in at least one π electron. 60 A second compound with a heterocyclic group, a third compound including a group represented by Formula 3, a fourth compound capable of emitting delayed fluorescence (delayed fluorescence emission), or any combination thereof.

[0063] The organometallic compound represented by Formula 1 (e.g., as the first compound), the second compound, the third compound, and the fourth compound in the light-emitting device may be different from each other:

[0064] Formula 3

[0065]

[0066] In Equation 3,

[0067] CY 71 and CY 72 Each can independently be a π-electron-rich C3-C 60Cyclic groups or pyridyl groups,

[0068] X 71 It can be a single bond or a linking group including O, S, N, B, C, Si, or any combination thereof, and

[0069] *Indicates the binding sites of atoms included in the remainder of the third compound, excluding the groups represented by Formula 3.

[0070] In one or more embodiments, the organometallic compound represented by Formula 1 may include at least one deuterium.

[0071] In one or more embodiments, the second compound, the third compound, and the fourth compound may each include at least one deuterium.

[0072] In one or more embodiments, the second compound may include at least one silicon.

[0073] In one or more embodiments, the third compound may include at least one silicon.

[0074] In one or more embodiments, in addition to the organometallic compound represented by Formula 1, the light-emitting device may further include a second compound and a third compound, and at least one of the second compound and the third compound may include at least one deuterium, at least one silicon and / or a combination thereof (e.g., any suitable combination).

[0075] In one or more embodiments, in addition to the organometallic compound represented by Formula 1, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a second compound. At least one of the organometallic compound represented by Formula 1 and the second compound may include at least one deuterium. For example, in one or more embodiments, in addition to the organometallic compound represented by Formula 1 and the second compound, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a third compound, a fourth compound, or any combination thereof.

[0076] In one or more embodiments, in addition to the organometallic compound represented by Formula 1, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a third compound. At least one of the organometallic compound represented by Formula 1 and the third compound may include at least one deuterium. For example, in one or more embodiments, in addition to the organometallic compound represented by Formula 1 and the third compound, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a second compound, a fourth compound, or any combination thereof.

[0077] In one or more embodiments, in addition to the organometallic compound represented by Formula 1, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a fourth compound. At least one of the organometallic compound represented by Formula 1 and the fourth compound may include at least one deuterium. The fourth compound may have the effect of improving the color purity, luminous efficiency, and lifetime characteristics of the light-emitting device. For example, in one or more embodiments, in addition to the organometallic compound represented by Formula 1 and the fourth compound, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a second compound, a third compound, or any combination thereof.

[0078] In one or more embodiments, in addition to the organometallic compound represented by Formula 1, the light-emitting device (e.g., the emitting layer in the light-emitting device) may further include a second compound and a third compound. The second compound and the third compound may form an excited-state complex. At least one of the organometallic compound represented by Formula 1, the second compound, and the third compound may include at least one deuterium.

[0079] In one or more embodiments, the emitting layer in the light-emitting device may include: i) an organometallic compound represented by Formula 1; and ii) a second compound, a third compound, a fourth compound, or any combination thereof, wherein the emitting layer may emit blue or green light.

[0080] In one or more embodiments, the blue light may have a maximum emission wavelength in the 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.

[0081] In one or more embodiments, the green light may have a maximum emission wavelength in the range of about 500 nm to about 570 nm, about 500 nm to about 565 nm, about 505 nm to about 565 nm, about 505 nm to about 560 nm, about 510 nm to about 560 nm, about 510 nm to about 555 nm, about 515 nm to about 555 nm, about 515 nm to about 550 nm, about 520 nm to about 550 nm, about 520 nm to about 545 nm, about 525 nm to about 545 nm, about 525 nm to about 540 nm, or about 530 nm to about 540 nm.

[0082] In one or more embodiments, the second compound may include pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or any combination thereof.

[0083] In one or more embodiments, the third compound may not include (e.g., may exclude) the following compounds:

[0084]

[0085] In one or more embodiments, the fourth compound may be a compound in which the difference (e.g., the absolute value of the difference) between its triplet level (eV) and singlet level (eV) is at least 0 eV but no more than about 0.5 eV (or at least 0 eV but no more than about 0.3 eV).

[0086] 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.

[0087] In one or more embodiments, the fourth compound may be a C8-C4 compound comprising two or more cyclic groups fused together while sharing B (e.g., one is a first ring and the other is a second ring). 60 Compounds with polycyclic groups.

[0088] In one or more embodiments, the fourth compound may include a fused ring in which at least one third ring is fused with at least one fourth ring, for example, to form a fused ring comprising four or more rings.

[0089] The third ring may be cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclooctenyl, adamantyl, norbornenyl, norbornyl, bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.2]octyl, phenyl, pyridyl, pyrimidinyl, pyrazinyl, pyrazinyl, or triazinyl, and

[0090] The fourth ring can be 1,2-azaborophene, 1,3-azaborophene, 1,4-azaborophene, 1,2-dihydro-1,2-azaborophene, 1,4-oxaborophene, 1,4-thioborophene, or 1,4-dihydroborophene.

[0091] In one or more embodiments, the third compound may not include (e.g., may exclude) the compounds described herein by formula 3-1 (e.g., any).

[0092] In one or more embodiments, the second compound may include a compound represented by Formula 2:

[0093] Formula 2

[0094]

[0095] In Equation 2,

[0096] L 51 To L 53 Each can be independently a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0097] b51 to b53 can each be an integer selected from 1 to 5 independently.

[0098] X 54 It can be N or C(R) 54 ), X 55 It can be N or C(R) 55 ), X 56 It can be N or C(R) 56 ), and selected from X 54 To X 56 At least one of them can be N, and

[0099] R 51 To R 56 and R 10a Each can be the same as described in this article.

[0100] In one or more embodiments, the third compound may include the compound represented by Formula 3-1, the compound represented by Formula 3-2, the compound represented by Formula 3-3, the compound represented by Formula 3-4, the compound represented by Formula 3-5, or any combination thereof:

[0101] Equation 3-1

[0102]

[0103] Equation 3-2

[0104]

[0105] Equation 3-3

[0106]

[0107] Equation 3-4

[0108]

[0109] Formula 3-5

[0110]

[0111] In equations 3-1 to 3-5,

[0112] CY 71 To CY 74 Each can independently be a π-electron-rich C3-C 60 Cyclic groups or pyridyl groups,

[0113] X 82 Can be a single bond, O, S, N[(L 82 ) b82 -R 82 ]、B[(L 82 ) b82 -R 82 ]、C(R 82a (R) 82b ) or Si(R 82a (R) 82b ),

[0114] X 83 Can be a single bond, O, S, N[(L 83 ) b83 -R 83 ]、B[(L 83 ) b83 -R 83 ]、C(R 83a (R) 83b ) or Si(R 83a (R) 83b ),

[0115] X 84 It can be O, S, N[(L 84 ) b84 -R 84 ]、B[(L 84 ) b84 -R 84 ]、C(R 84a (R) 84b ) or Si(R 84a (R) 84b ),

[0116] X 85 It can be C or Si.

[0117] L 81 To L 85 Each can be independently a single bond, *-C(Q4)(Q5)-*', *-Si(Q4)(Q5)-*', unsubstituted, or bonded by at least one R. 10a Replacement of π-electron-rich C3-C 60 Cyclic groups or unsubstituted or substituted with at least one R 10aSubstituted pyridinyl groups, wherein Q4 and Q5 may each be identical to those described for Q1.

[0118] b81 to b85 can each be an integer selected from 1 to 5 independently.

[0119] R 71 To R 74 R 81 To R 85 R 82a R 82b R 83a R 83b R 84a and R 84b Each can be the same as described in this article.

[0120] a71 to a74 can each be an integer selected from 0 to 20 independently, and

[0121] R 10a It can be the same as that described in this article.

[0122] In one or more embodiments, the fourth compound may be a compound represented by formula 502, a compound represented by formula 503, or any combination thereof:

[0123] Formula 502

[0124]

[0125] Formula 503

[0126]

[0127] In Equations 502 and 503,

[0128] Ring A 501 To Ring A 504 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0129] Y 505 It can be O, S, N(R) 505 ), B(R) 505 ), C(R 505a (R) 505b ) or Si(R 505a (R) 505b ),

[0130] Y 506 It can be O, S, N(R) 506 ), B(R) 506 ), C(R 506a (R) 506b ) or Si(R506a (R) 506b ),

[0131] Y 507 It can be O, S, N(R) 507 ), B(R) 507 ), C(R 507a (R) 507b ) or Si(R 507a (R) 507b ),

[0132] Y 508 It can be O, S, N(R) 508 ), B(R) 508 ), C(R 508a (R) 508b ) or Si(R 508a (R) 508b ),

[0133] Y 51 and Y 52 Each can be independently represented as B, P (=O), or S (=O).

[0134] 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 Each can be the same as described in this article, and

[0135] a501 to a504 can each be an integer selected from 0 to 20 independently.

[0136] In one or more embodiments, the light-emitting device may satisfy at least one of conditions selected from conditions 1 to 4:

[0137] Condition 1

[0138] The lowest unoccupied molecular orbital (LUMO) energy level (eV) of the third compound is greater than the LUMO energy level (eV) of the organometallic compound represented by Equation 1;

[0139] Condition 2

[0140] The LUMO energy level (eV) of the organometallic compound represented by Equation 1 is greater than the LUMO energy level (eV) of the second compound; Condition 3

[0141] The highest occupied molecular orbital (HOMO) energy level (eV) of the organometallic compound represented by Equation 1 is greater than the HOMO energy level (eV) of the third compound; and

[0142] Condition 4

[0143] The HOMO energy level (eV) of the third compound is greater than that of the second compound (eV).

[0144] Each of the HOMO and LUMO energy levels of the organometallic compound, the second compound, and the third compound represented by Formula 1 may be negative and may be measured according to appropriate methods.

[0145] In one or more embodiments, the absolute value of the difference between the LUMO energy level of the organometallic compound represented by Formula 1 and the LUMO energy level of the second compound may be in the range of about 0.1 eV or greater to about 1.0 eV or less, the absolute value of the difference between the LUMO energy level of the organometallic compound represented by Formula 1 and the LUMO energy level of the third compound may be in the range of about 0.1 eV or greater to about 1.0 eV or less, the absolute value of the difference between the HOMO energy level of the organometallic compound represented by Formula 1 and the HOMO energy level of the second compound may be about 1.25 eV or less (e.g., about 0.2 eV or greater to about 1.25 eV or less), and the absolute value of the difference between the HOMO energy level of the organometallic compound represented by Formula 1 and the HOMO energy level of the third compound may be about 1.25 eV or less (e.g., about 0.2 eV or greater to about 1.25 eV or less).

[0146] When the relationship between the LUMO and HOMO energy levels satisfies the aforementioned conditions, a balance between holes and electrons injected into the emitter layer can be achieved.

[0147] The light-emitting device may have a structure according to either the first or the second embodiment.

[0148] First Implementation Method

[0149] According to a first embodiment, the emitting layer of the interlayer in the light-emitting device may include an organometallic compound represented by Formula 1, and may further include a host, wherein the organometallic compound represented by Formula 1 and the host may be different from each other, and the emitting layer may emit phosphorescence or fluorescence emitted from the organometallic compound represented by Formula 1. For example, according to the first embodiment, the organometallic compound represented by Formula 1 may be a dopant or an emitter. For example, the organometallic compound represented by Formula 1 may be a phosphorescent dopant or a phosphorescent emitter.

[0150] The phosphorescence or fluorescence emitted from organometallic compounds represented by Formula 1 can be blue or green.

[0151] In one or more embodiments, the emitting layer may further include an auxiliary dopant. The auxiliary dopant can effectively transfer energy to the organometallic compound represented by Formula 1, which is used as a dopant or emitter, and in this regard, the auxiliary dopant can be used to improve the luminescence efficiency of the organometallic compound represented by Formula 1.

[0152] The auxiliary dopant may be different from each of the organometallic compounds represented by Formula 1 and the host.

[0153] In one or more embodiments, the auxiliary dopant may be a compound that emits delayed fluorescence.

[0154] In one or more embodiments, the auxiliary dopant may be a compound comprising at least one cyclic group containing both B and N as cyclic atoms.

[0155] Second Implementation Method

[0156] According to the second embodiment, the emitting layer of the interlayer in the light-emitting device may include an organometallic compound represented by Formula 1, and may further include a host and a dopant, wherein the organometallic compound represented by Formula 1, the host and the dopant may be different from each other, and the emitting layer may emit phosphorescence or fluorescence (e.g., delayed fluorescence) emitted from the dopant.

[0157] In one or more embodiments, the organometallic compound represented by Formula 1 in the second embodiment is not a dopant, but an auxiliary dopant that can be used to transfer energy to the dopant (or emitter).

[0158] In one or more embodiments, the organometallic compound represented by Formula 1 in the second embodiment can be used as an emitter and can also be used as an auxiliary dopant to transfer energy to the dopant (or emitter).

[0159] For example, in one or more embodiments, the phosphorescence or fluorescence emitted from the dopant (or emitter) may be blue phosphorescence or blue fluorescence (e.g., blue delayed fluorescence). In one or more embodiments, the phosphorescence or fluorescence emitted from the dopant (or emitter) may be green phosphorescence or green fluorescence (e.g., green delayed fluorescence).

[0160] The dopant (or emitter) in the second embodiment may be any phosphorescent dopant material (e.g., an organometallic compound represented by Formula 1 described herein, an organometallic compound represented by Formula 401 described herein, or any combination thereof) or any fluorescent dopant material (e.g., a compound represented by Formula 501 described herein, a compound represented by Formula 502 described herein, a compound represented by Formula 503 described herein, or any combination thereof).

[0161] The blue light in the first and second embodiments may be blue light having a maximum emission wavelength in the 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.

[0162] In the first and second embodiments, the green light may have a maximum emission wavelength in the range of about 500 nm to about 570 nm, about 500 nm to about 565 nm, about 505 nm to about 565 nm, about 505 nm to about 560 nm, about 510 nm to about 560 nm, about 510 nm to about 555 nm, about 515 nm to about 555 nm, about 515 nm to about 550 nm, about 520 nm to about 550 nm, about 520 nm to about 545 nm, about 525 nm to about 545 nm, about 525 nm to about 540 nm, or about 530 nm to about 540 nm.

[0163] The auxiliary dopant in the first embodiment may include, for example, a compound represented by formula 502 or formula 503 as a fourth compound.

[0164] In one or more embodiments, the main body in the first and second embodiments may be any main body material (e.g., a compound represented by Formula 301, a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof).

[0165] In one or more embodiments, the main body in the first and second embodiments may be a second compound, a third compound, or any combination thereof.

[0166] In one or more embodiments, the light-emitting device may further include a capping layer disposed outside the first electrode (on the first electrode) and / or outside the second electrode (e.g., on the second electrode).

[0167] In one or more embodiments, the light-emitting device may further include at least one of a first capping layer disposed outside the first electrode (e.g., on the first electrode) and a second capping layer disposed outside the second electrode (e.g., on the second electrode), wherein at least one of the first and second capping layers may comprise an organometallic compound represented by Formula 1. Further details regarding the first and / or second capping layers can be found in the description provided herein.

[0168] In one or more embodiments, the light-emitting device may include:

[0169] A first capping layer is disposed outside the first electrode (e.g., on the first electrode) and comprises an organometallic compound represented by Formula 1;

[0170] A second capping layer, disposed outside the second electrode (e.g., on the second electrode), comprises an organometallic compound represented by Formula 1; or

[0171] Both the first capping layer and the second capping layer (e.g., simultaneously).

[0172] As used herein, the phrase “(interlayer and / or capping layer) includes an organometallic compound represented by Formula 1” can be understood as “(interlayer and / or capping layer) may include one type of organometallic compound represented by Formula 1 or two or more different types of organometallic compounds each represented by Formula 1”.

[0173] In one or more embodiments, the interlayer and / or capping layer may comprise only compound 1 as an organometallic compound. In this respect, compound 1 may be present in the emitting layer of the light-emitting device. In one or more embodiments, the interlayer may comprise both compound 1 and compound 2 as organometallic compounds. In this respect, compound 1 and compound 2 may be present in substantially the same layer (e.g., both compound 1 and compound 2 may be present in the emitting layer simultaneously), or they may be present in different layers (e.g., compound 1 may be present in the emitting layer, and compound 2 may be present in the electron transport region).

[0174] As used herein, the term “interlayer” refers to a single layer and / or multiple layers arranged (e.g., between the first and second electrodes of a light-emitting device).

[0175] According to one or more embodiments of this disclosure, an electronic device may include a light-emitting device. The electronic device may further include a thin-film transistor. For example, the electronic device may further include a thin-film transistor including a source electrode and a drain electrode, wherein a first electrode of the light-emitting device is electrically connected to the source electrode or the drain electrode. In one or more embodiments, the electronic device may further include a color filter, a color conversion layer, a touchscreen layer, a polarizing layer, or any combination thereof. Further details regarding the electronic device can be found in the description provided herein.

[0176] According to one or more embodiments of this disclosure, electronic devices may include light-emitting devices.

[0177] For example, electronic devices may be at least one of the following: flat panel displays, curved displays, computer monitors, medical monitors, televisions, billboards, indoor lights, outdoor lights, signal lights, head-up displays, fully transparent displays, partially transparent displays, flexible displays, rollable displays, foldable displays, retractable displays, laser printers, telephones, portable telephones, tablet PCs, tablet computers, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders, viewfinders, microdisplays, three-dimensional (3D) displays, virtual reality displays, augmented reality displays, vehicles, video walls with multiple displays spliced ​​together, theater screens, stadium screens, phototherapy devices, and signs.

[0178] According to one or more embodiments of this disclosure, organometallic compounds represented by Formula 1 are provided. For a description of Formula 1, refer to other parts of this disclosure.

[0179] By referring to the synthesis examples and / or embodiments provided herein, those skilled in the art can identify the synthesis methods of the organometallic compounds represented by Formula 1.

[0180] Description of Equation 1

[0181] Formula 1

[0182]

[0183] In Equation 1, M can be platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm).

[0184] In one or more embodiments, M may be Pt, Pd, or Au.

[0185] In one or more embodiments, M may be Pt.

[0186] In Equation 1, X1 to X4 can each be C or N independently.

[0187] In one or more embodiments, X1 may be C.

[0188] In one or more embodiments, X1 may be C, and

[0189] The bond between X1 and M can be a coordinate bond.

[0190] In one or more embodiments, X1 may be C of the carbene moiety.

[0191] In one or more embodiments, X2 and X3 may each be C, and

[0192] X4 can be N.

[0193] In one or more embodiments, i) the bond between X1 and M can be a coordinate bond, and

[0194] ii) One of the bonds between X2 and M, X3 and M, and X4 and M may be coordinate bonds, and the other two may each be covalent bonds.

[0195] In one or more embodiments, the key between X1 and M and the key between X4 and M can each be a coordinate key, and

[0196] The bond between X2 and M and the bond between X3 and M can each be a covalent bond.

[0197] In one or more embodiments, X1, X2, and X3 may each be C, and X4 may be N.

[0198] The key between X1 and M and the key between X4 and M can each be a coordinate key, and

[0199] The bond between X2 and M and the bond between X3 and M can each be a covalent bond.

[0200] In Equation 1, rings CY1 to CY4 can each be independently C5-C. 30 Carbocyclic or C1-C 30 Heterocyclic group.

[0201] In one or more embodiments, rings CY1 to CY4 may each be independently:

[0202] Phenyl, naphthyl, anthraceneyl, phenanthrene, triphenylene, pyrene, 1,2-benzophenanthrene, cyclopentadienyl, furanyl, thiopheneyl, thiopheneyl, indoleyl, fluoreneyl, indoleyl, carbazoleyl, benzofuranyl, dibenzofuranyl, benzothiopheneyl, dibenzothiopheneyl, benzothiopheneyl, dibenzobenzofuranyl, naphthobenzofuranyl, naphthobenzothiopheneyl, benzocarbazoleyl, benzofluoreneyl, naphthobenzothiopheneyl, dinaphthofuranyl, dinaphthothiopheneyl Fenyl, dibenzocarbazoyl, dibenzofluorenyl, dinaphthothiopyrrolyl, azafluorenyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiopheneyl, azadibenzothiopyrrolyl, azanaphthobenzofuranyl, azanaphthobenzothiopheneyl, azabenzazocarbazoyl, azabenzafluorenyl, azanaphthobenzothiopyrrolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, phenanthrene Linolyl, pyrrolyl, pyrazolyl, imidazoleyl, triazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, naphthizolyl, imidazole-pyridyl, azadinaphthofuranyl, azadinaphthothiophenyl, azadibenzocarbazolyl, azadibenzofluorenyl, azadinaphthothiolyl, benzoxazolyl, benzothizolyl, benzoxazolyl, benzothizolyl, benzoxadiazolyl, benzothizolyl, dibenzoxoxazolyl Silylcyclohexyl, dibenzothiosilylcyclohexyl, dibenzodihydroazinosilylcyclohexyl, dibenzodihydrodisilylcyclohexyl, dibenzodihydrosilylcyclohexyl, dibenzodioxanecyclohexyl, dibenzooxazinyl, dibenzopyranyl, dibenzodithiocyclohexyl, dibenzothiazinyl, dibenzothiaranyl, dibenzocyclohexadienyl, dibenzodihydropyridinyl or dibenzodihydropyrazinyl.

[0203] In one or more embodiments, cycloCY1 may be imidazole, triazole, benzimidazole, naphzimidazole, or imidazolepyridyl.

[0204] In one or more embodiments, cyclo(CY2) may be phenyl, pyridinyl, pyrimidinyl, naphthyl, dibenzofuranyl, dibenzothiopheneyl, carbazoleyl, fluorenyl, dibenzothiopheneyl, naphthobenzofuranyl, naphthobenzothiopheneyl, benzocarbazoleyl, benzofluorenyl, naphthobenzothiopheneyl, dinaphthofuranyl, dinaphthothiopheneyl, dibenzocarbazoleyl, dibenzofluorenyl, dinaphthothiopheneyl , azadibenzofuranyl, azadibenzothiophenyl, azacarbazoyl, azafluorenyl, azadibenzothiophenyl, azanaphthobenzofuranyl, azanaphthobenzothiophenyl, azabenzacarbazoyl, azabenzafluorenyl, azanaphthobenzothiophenyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzocarbazoyl, azadibenzofluorenyl or azadibenzothiophenyl.

[0205] In one or more embodiments, cycloCY2 may be phenyl, pyridinyl, pyrimidinyl, naphthyl, dibenzofuranyl, dibenzothiophenyl, carbazoyl, fluorenyl or dibenzothiophenyl.

[0206] In one or more embodiments, cycloCY3 may be phenyl, pyridyl, naphthyl, quinolinyl, isoquinolinyl, dibenzofuranyl, dibenzothiophenyl, carbazoleyl, fluorenyl or dibenzothiophenyl.

[0207] In one or more embodiments, cyclo CY4 may be a nitrogen-containing C1-C. 60 Heterocyclic group.

[0208] In one or more embodiments, cycloCY4 may be pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, phenanthrolineyl, pyrroleyl, pyrazolyl, imidazoleyl, triazolyl, benzopyrazolyl, benzimidazoleyl, or benzothiazolyl.

[0209] In Equation 1, L1 to L3 can each be an independent single bond, *-C(R) 1a (R) 1b )-*'、*-C(R 1a )=*'、*=C(R 1a )-*'、*-C(R 1a )=C(R 1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R 1a )-*'、*-N(R 1a )-*'、*-O-*'、*-P(R 1a )-*'、*-Al(R 1a )-*、*-Si(R 1a (R) 1b )-*'、*-P(=O)(R 1a )-*', *-S-*', *-S(=O)-*', *-S(=O)2-*' or *-Ge(R 1a (R) 1b )-*', where * and *' each indicate the binding site with the adjacent atom.

[0210] In Equation 1, R 1a and R 1b Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 60 Alkyl thioyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -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).

[0211] R 10a Q1 through Q3 can each be the same as those described in this article.

[0212] In Equation 1, n1 to n3 indicate the number of L1 to L3, respectively, and each can be an integer selected from 1 to 10 independently. When n1 is 2 or greater, two or more L1s can be the same or different from each other; if (for example, when) n2 is 2 or greater, two or more L2s can be the same or different from each other; and if (for example, when) n3 is 2 or greater, two or more L3s can be the same or different from each other.

[0213] In one or more embodiments, L1 and L3 may each be a single bond.

[0214] In one or more embodiments, L2 may be *-O-*' or *-S-*', and n2 may be 1.

[0215] In one or more embodiments, L1 and L3 may each be a single bond, and

[0216] L2 can be *-O-*' or *-S-*', and n2 can be 1.

[0217] In one or more embodiments, R 1a and R 1b Each can be independently:

[0218] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy;

[0219] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0220] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindoleyl, indoleyl, indazoleyl, purinel, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl Benzoxazolyl, Benzisoxazolyl, Triazolyl, Tetrazolyl, Oxadiazolyl, Triazinyl, Dibenzofuranyl, Dibenzothiophenyl, Benzcarbazoleyl, Dibenzocarbazoleyl, Imidazolopyridyl, Imidazolopyrimidinyl, Azacarbazoleyl, Azadibenzofuranyl, Azadibenzothiophenyl, Azafluorenyl or Azadibenzothiophenyl: Deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthryl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, 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) 32 ) or any combination thereof; or

[0221] -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

[0222] Q1 to Q3 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0223] In Equation 1, Z 31It can be N or B.

[0224] In one or more embodiments, Z 31 It can be N.

[0225] In Equation 1, Z 32 It can be O, S or Se.

[0226] In one or more embodiments, Z 32 It can be O or S.

[0227] In Equation 1, Z 33 It can be O, S, B(R'), N(R'), C(R')(R”) or Si(R')(R”).

[0228] In Formula 1, R' and R” can each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 60 Alkyl thioyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -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).

[0229] R 10a Q1 through Q3 can each be the same as those described in this article.

[0230] In one or more embodiments, Z33 It can be O, S, N(R') or C(R')(R”).

[0231] In one or more embodiments, R' and R” can each be independently:

[0232] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy;

[0233] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0234] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindoleyl, indoleyl, indazoleyl, purinel, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl Benzoxazolyl, Benzisoxazolyl, Triazolyl, Tetrazolyl, Oxadiazolyl, Triazinyl, Dibenzofuranyl, Dibenzothiophenyl, Benzcarbazoleyl, Dibenzocarbazoleyl, Imidazolopyridyl, Imidazolopyrimidinyl, Azacarbazoleyl, Azadibenzofuranyl, Azadibenzothiophenyl, Azafluorenyl or Azadibenzothiophenyl: Deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthryl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, 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) 32 ) or any combination thereof; or

[0235] -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

[0236] Q1 to Q3 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0237] In one or more embodiments, R' and R" can each independently be: hydrogen, deuterium, -F, Cl-C 20 Alkyl or C1-C 20 Alkoxy;

[0238] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkoxy groups: deuterium, -F, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0239] Each of the following unsubstituted or substituted cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cyclolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl or dibenzothiophenyl: deuterium, -F, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthraceneyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cyclolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, -O(Q 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 ) or any combination thereof; or

[0240] -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3) or -N(Q1)(Q2), and

[0241] Q1 to Q3 and Q 31 To Q 33They can be, independently: hydrogen; deuterium; -F; or each unsubstituted or substituted with deuterium, -F, or Cl-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0242] In one or more embodiments, R' and R” can each be independently:

[0243] Hydrogen, deuterium or C1-C 20 alkyl;

[0244] Deuterium, -CD3, -CD2H, -CDH2, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, or any combination thereof substituted C1-C 20 alkyl;

[0245] Each of the following unsubstituted or substituted cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl or naphthyl: deuterium, -CD3, -CD2H, -CDH2, C1-C 20 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 alkyl)phenyl, naphthyl, -Si(Q) 31 (Q) 32 (Q) 33 ) or any combination thereof; or

[0246] -C(Q1)(Q2)(Q3) or -Si(Q1)(Q2)(Q3), and

[0247] Q1 to Q3 and Q 31 To Q 33 They can be independently: hydrogen; deuterium; or unsubstituted or deuterated, C1-C 60 C1-C substituted with alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C3-C 60 Carbon cyclic group.

[0248] In Formula 1, R1 to R4 can each be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 60 Alkyl thioyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -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).

[0249] R 10a Q1 through Q3 can each be the same as those described in this article.

[0250] In Equation 1, a1 to a4 indicate the number of R1 to R4, respectively, and each can be an integer selected independently from 1 to 20. If (for example, when) a1 is 2 or greater, two or more R1s can be the same or different from each other; if (for example, when) a2 is 2 or greater, two or more R2s can be the same or different from each other; if (for example, when) a3 is 2 or greater, two or more R3s can be the same or different from each other; and if (for example, when) a4 is 2 or greater, two or more R4s can be the same or different from each other.

[0251] In one or more embodiments, R1 to R4 can each be independently:

[0252] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy;

[0253] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0254] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindoleyl, indoleyl, indazoleyl, purinel, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl Benzoxazolyl, Benzisoxazolyl, Triazolyl, Tetrazolyl, Oxadiazolyl, Triazinyl, Dibenzofuranyl, Dibenzothiophenyl, Benzcarbazoleyl, Dibenzocarbazoleyl, Imidazolopyridyl, Imidazolopyrimidinyl, Azacarbazoleyl, Azadibenzofuranyl, Azadibenzothiophenyl, Azafluorenyl or Azadibenzothiophenyl: Deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthryl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, 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) 32 ) or any combination thereof; or

[0255] -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

[0256] Q1 to Q3 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0257] In one or more embodiments, R1 to R4 can each be independently:

[0258] Hydrogen, deuterium, -F, Cl-C 20 Alkyl or C1-C 20 Alkoxy;

[0259] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkoxy groups: deuterium, -F, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0260] Each of the following unsubstituted or substituted cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cyclolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl or dibenzothiophenyl: deuterium, -F, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthraceneyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cyclolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, -O(Q 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 ) or any combination thereof; or

[0261] -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3) or -N(Q1)(Q2), and

[0262] Q1 to Q3 and Q 31 To Q 33They can be, independently: hydrogen; deuterium; -F; or each unsubstituted or substituted with deuterium, -F, or Cl-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0263] In one or more embodiments, R1 to R4 can each be independently:

[0264] Hydrogen, deuterium or C1-C 20 alkyl;

[0265] Deuterium, -CD3, -CD2H, -CDH2, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, or any combination thereof substituted C1-C 20 alkyl;

[0266] Each of the following unsubstituted or substituted cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl or naphthyl: deuterium, -CD3, -CD2H, -CDH2, C1-C 20 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 alkyl)phenyl, naphthyl, -Si(Q) 31 (Q) 32 (Q) 33 ) or any combination thereof; or

[0267] -C(Q1)(Q2)(Q3) or -Si(Q1)(Q2)(Q3), and

[0268] Q1 to Q3 and Q 31 To Q 33 They can be independently: hydrogen; deuterium; or unsubstituted or deuterated, C1-C 60 C1-C substituted with alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C3-C 60 Carbon cyclic group.

[0269] In one or more embodiments, R1 selected in quantity a1, R2 selected in quantity a2, R3 selected in quantity a3, R4 selected in quantity a4, and R 1a R 1b Two or more adjacent R' and R' may optionally be bonded together to form an unsubstituted or compounded by at least one R'. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

[0270] In one or more embodiments, in Equation 1, by The group represented can be any group selected from formulas CY1(1) to CY1(11):

[0271]

[0272]

[0273] In equations CY1(1) to CY1(11),

[0274] R 11 To R 17 Each is the same as the description for R1.

[0275] *Indicates the binding site with M in Formula 1, and

[0276] *' indicates the binding site with L1 in Formula 1.

[0277] In one or more embodiments, in formulas CY1(1) to CY1(11), R 11 Possible forms:

[0278] -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H or -CD2CDH2;

[0279] Each of the following unsubstituted or substituted groups: n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, or tert-pentyl: deuterium, C1-C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof; or

[0280] Groups represented by formula R-1:

[0281] Formula R-1

[0282]

[0283] In equation R-1,

[0284] X 111 It can be C(R) 111 ) or N, X 112 It can be C(R) 112 ) or N, X 113 It can be C(R) 113 ) or N, X 114 It can be C(R) 114 ) or N, and X 115 It can be C(R) 115 ) or N,

[0285] R 111 To R 115 Each can be independently:

[0286] Hydrogen, deuterium, -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H or -CD2CDH2; or

[0287] Each of the following unsubstituted or substituted groups: n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, phenyl, naphthyl, pyridyl, pyrimidinyl, pyrazinyl, pyrazinyl, or triazinyl: deuterium, C1-C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof, and

[0288] * Indicates the binding site with adjacent atoms.

[0289] In one or more embodiments, in formulas CY1(1) to CY1(11), R 11 It can be a group represented by formula R-1, and

[0290] X 111 It can be C(R) 111 ).

[0291] In one or more embodiments, in formulas CY1(1) to CY1(11), R 11 It can be a group represented by formula R-1, and

[0292] X 112 It can be C(R) 112), and X 114 It can be C(R) 114 ).

[0293] In one or more embodiments, in formulas CY1(1) to CY1(11), R 11 It can be a group represented by formula R-1, and

[0294] X 112 It can be C(R) 112 ), X 113 It can be N, and X 114 It can be C(R) 114 ).

[0295] In one or more embodiments, in formulas CY1(1) to CY1(11), R 11 It can be a group represented by formula R-1, and

[0296] X 111 It can be C(R) 111 ), and X 115 It can be C(R) 115 ).

[0297] In one or more embodiments, Equation 1 is derived from... The group represented can be any group selected from formulas CY2(1) to CY2(13):

[0298]

[0299] In equations CY2(1) to CY2(13),

[0300] T 21 It can be B(Y) 21 ), C(Y 21 (Y) 22 ), N(Y 21 ), O, S or Si(Y) 21 (Y) 22 ), T 22 It can be C(Y) 21 ), N or Si(Y) 21 ),

[0301] R 21 To R 26 Y 21 and Y 22 Each can be the same as the description for R2.

[0302] *Indicates the binding site with M in Formula 1.

[0303] *' indicates the binding site with L1 in Formula 1, and

[0304] * indicates the binding site with L2 in Formula 1.

[0305] In one or more embodiments, Equation 1 is derived from... The group represented can be any one selected from formulas CY3(1) to CY3(10):

[0306]

[0307]

[0308] In equations CY3(1) to CY3(10),

[0309] Z 31 Z 32 and Z 33 Each can be the same as described in this article.

[0310] T 31 It can be B(Y) 31 ), C(Y 31 (Y) 32 ), N(Y 31 ), O, S or Si(Y) 31 (Y) 32 ),

[0311] R 31 To R 34 Y 31 and Y 32 Each can be the same as the description for R3.

[0312] *Indicates the binding site with M in Formula 1.

[0313] * indicates the binding site with L2 in Formula 1, and

[0314] *”' indicates the binding site with L3 in Formula 1.

[0315] In one or more embodiments, in Equation 1, by The group represented can be any group selected from formulas CY4(1) to CY4(29):

[0316]

[0317]

[0318] In equations CY4(1) to CY4(29),

[0319] R 41 To R 47 Each is the same as the description for R4.

[0320] *Indicates the binding site with M in Formula 1, and

[0321] *”' indicates the binding site with L3 in Formula 1.

[0322] In one or more embodiments, the organometallic compound represented by Formula 1 may be a compound represented by Formula 1-1:

[0323] Equation 1-1

[0324]

[0325] In Equation 1-1,

[0326] M, Z 31 Z 32 and Z 33 Each can be the same as described in this article.

[0327] L2 can be *-O-*' or *-S-*'.

[0328] 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, and X 15 It can be C(R) 15 ) or N,

[0329] X 21 It can be C(R) 21 ) or N, X 22 It can be C(R) 22 ) or N, and X 23 It can be C(R) 23 ) or N,

[0330] X 31 It can be C(R) 31 ) or N, and X 32 It can be C(R) 32 ) or N,

[0331] X 41 It can be C(R) 41 ) or N, X 42 It can be C(R) 42 ) or N, X 43 It can be C(R) 43 ) or N, and X 44 It can be C(R) 44 ) or N,

[0332] R 11 To R15 Each can be the same as the description for R1.

[0333] R 21 To R 23 Each can be the same as the description for R2.

[0334] R 31 and R 32 Each can be the same as the description for R3.

[0335] R 41 To R 44 Each can be the same as the description for R4, and

[0336] Selected from R 11 To R 15 R 21 To R 23 R 31 R 32 and R 41 To R 44 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

[0337] Unless otherwise specified, in Equation 1, R 10a Possible forms:

[0338] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano or nitro;

[0339] Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkoxy groups: 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, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -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;

[0340] Each of the following C3-Cs that are not substituted or are substituted by: 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: 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 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -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

[0341] -O(Q 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -P(Q) 31 (Q) 32 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q)32 ).

[0342] Unless otherwise specified, in Equation 1, Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 Aryl alkyl group; or C2-C 60 Heteroalkyl groups.

[0343] In organometallic compounds represented by Formula 1, the ring CY3 interacts with a Z-shaped structure. 31 -C(=Z 33 )-Z 32 The structure has a 5-membered ring fusion, and therefore, by using an organometallic compound represented by Formula 1, a light-emitting device (e.g., an organic light-emitting device) with a reduced driving voltage, improved luminous efficiency and increased lifetime can be implemented.

[0344] Other descriptions

[0345] Formula 2

[0346]

[0347] In Equation 2, L 51 To L 53 Each can be independently a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

[0348] In Equation 2, b51 to b53 respectively indicate L 51 To L 53 The number of L, and each can be an integer selected from 1 to 5. If (for example, when) b51 is 2 or greater, then two or more L51 They can be the same or different from each other, and if (for example, when) b52 is 2 or greater, then two or more L's can be the same. 52 They can be the same or different from each other, and if (for example, when) b53 is 2 or greater, then two or more Ls 53 They may be the same or different from each other. In one or more embodiments, b51 to b53 may each be 1 or 2 independently.

[0349] In one or more embodiments, in Equation 2, L 51 To L 53 Each can be independently:

[0350] Single key; or

[0351] Each of the following unsubstituted or substituted groups is phenyl, naphthyl, anthraceneyl, phenanthrene, triphenylene, pyrene, 1,2-benzophenanthrene, cyclopentadienyl, furanyl, thiopheneyl, thiopyrrolyl, indole, fluorenyl, indole, carbazole, benzofuranyl, dibenzofuranyl, benzothiopheneyl, dibenzothiopheneyl, benzothiopyrrolyl, azafluorenyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiopheneyl, azadibenzothiopyrrolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, phenanthrene-pyrrolyl, pyrrolyl, pyrazolyl, imidazoleyl, triazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl Oxadiazole, Thiadiazole, Benzopyrazol, Benzimidazole, Benzooxazol, Benzothiazool, Benzooxadiazole, Benzothiadiazole, Dibenzooxasiloxane, Dibenzothiosiloxane, Dibenzodihydroazines, Dibenzodihydrosiloxane, Dibenzodihydrosiloxane, Dibenzodioxane, Dibenzodioxazinyl, Dibenzopyranyl, Dibenzodithiosiloxane, Dibenzodioxazinyl, Dibenzothiazinyl, Dibenzothiaranyl, Dibenzocyclohexadienyl, Dibenzodihydropyridinyl or Dibenzodihydropyrazinyl: 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, and

[0352] Q 31 To Q 33 Each can be independently hydrogen, deuterium, or C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, or triazinyl.

[0353] In one or more embodiments, in Equation 2, L 51 With R 51 The key between, L 52 With R 52 The key between, L 53 With R 53 The key between the two Ls 51 The key between the two Ls 52 The key between the two Ls 53 The key between, L 51 With X in Equation 2 54 and X 55 The bonds between carbon atoms, L 52 With X in Equation 2 54 and X 56 The bonds between carbon atoms and L 53 With X in Equation 2 55 and X 56 The bonds between carbon atoms can each be a "carbon-carbon single bond".

[0354] In Equation 2, X 54 It can be N or C(R) 54 ), X 55 It can be N or C(R) 55 ), and X 56 It can be N or C(R) 56 ), of which X 54 To X 56 At least one of them can be N. R 54 To R 56 Each may be the same as described herein. In one or more embodiments, selected from X 54 To X 56 Two or three of them can each be N.

[0355] In Equation 2, R 51 To R 56 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroaryl, -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). Q1 to Q3 may each be the same as those described herein.

[0356] In one or more embodiments, in Equation 2, R 51 To R 56 Each can be independently:

[0357] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy;

[0358] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0359] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cinolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoxazole The following groups are listed: benzoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazoyl, dibenzocarbazoyl, imidazopyridyl, imidazopyrimidinyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiophenyl, or groups represented by Formula 91: deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, cinolinyl, carbazole, phenanthryl, benzimidazolyl, benzofuranyl, benzothiophene, benzothiazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, 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) 32 ) or any combination thereof; or

[0360] -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

[0361] Q1 to Q3 and Q 31 To Q 33 Each can be independently:

[0362] -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H or -CD2CDH2; or

[0363] Each of the following unsubstituted or substituted groups: n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, phenyl, naphthyl, pyridyl, pyrimidinyl, pyrazinyl, pyrazinyl, or triazinyl: deuterium, C1-C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof:

[0364] Formula 91

[0365]

[0366] In Equation 91,

[0367] CY 91 and CY 92 Each can be independently unsubstituted or by at least one R 10a Replacement C5-C 30 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 30 Heterocyclic group,

[0368] X 91 It can be a single bond, O, S, N(R) 91), B(R) 91 ), C(R 91a (R) 91b ) or Si(R 91a (R) 91b ),

[0369] R 91 R 91a and R 91b Can be used with respect to R respectively 82 R 82a and R 82b The descriptions are the same.

[0370] R 10a It may be the same as that described in this article, and

[0371] * Indicates the binding site with adjacent atoms.

[0372] For example, in one or more embodiments, in formula 91,

[0373] CY 91 and CY 92 Each can be independently of its own unsubstituted or by at least one R 10a Substituted phenyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, or triazinyl, and

[0374] R 91 R 91a and R 91b Each can be independently:

[0375] Hydrogen or C1-C 10 Alkyl; or

[0376] Each of the following unsubstituted or substituted phenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, or triazinyl groups: deuterium, C1-C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl or any combination thereof.

[0377] In one or more embodiments, in Equation 2, by *-(L 51 ) b51 -R 51 The group represented and the group composed of *-(L 52 ) b52 -R 52 The groups represented may not each be phenyl.

[0378] In one or more embodiments, Equation 2 is composed of *-(L 51 ) b51 -R 51 The group represented and the group composed of *-(L 52 ) b52-R 52 The groups represented can be the same as each other.

[0379] In one or more embodiments, Equation 2 is composed of *-(L 51 ) b51 -R 51 The group represented and the group composed of *-(L 52 ) b52 -R 52 The groups represented can be different from each other.

[0380] In one or more embodiments, in Equation 2, b51 and b52 may each be 1, 2, or 3, and L 51 and L 52 Each can be independently of its own unsubstituted or by at least one R 10a Substituted phenyl, pyridinyl, pyrimidinyl, pyridazinyl, pyrazinyl, or triazinyl.

[0381] In one or more embodiments, R in Equation 2 51 and R 52 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Arylthio, -C(Q1)(Q2)(Q3) or -Si(Q1)(Q2)(Q3), and

[0382] Q1 to Q3 can each be independently unsubstituted or replaced by deuterium, -F, cyano, or C1-C. 60 Alkyl, C1-C 60 C3-C substituted with alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0383] In one or more embodiments,

[0384] In Equation 2, *-(L 51 ) b51 -R 51 The represented group may be any group selected from formulas CY51-1 to CY51-26, and / or

[0385] In Equation 2, *-(L 52 ) b52 -R52 The represented group may be any group selected from formulas CY52-1 to CY52-26, and / or

[0386] In Equation 2, *-(L 53 ) b53 -R 53 The represented group can be any group selected from formulas CY53-1 to CY53-27, -C(Q1)(Q2)(Q3), or -Si(Q1)(Q2)(Q3):

[0387]

[0388]

[0389]

[0390] In formulas CY51-1 to CY51-26, CY52-1 to CY52-26, and CY53-1 to CY53-27

[0391] 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 ),

[0392] 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 ),

[0393] Y 67 It can be a single bond, O, S, N(R) 67 ), B(R) 67 ), C(R 67a (R) 67b ) or Si(R 67a (R) 67b ),

[0394] Y 68 It can be a single bond, O, S, N(R) 68 ), B(R) 68 ), C(R 68a (R) 68b ) or Si(R 68a (R)68b ),

[0395] Y in formulas CY51-16 and CY51-17 63 and Y 64 Each element in the set can be a single bond at the same time.

[0396] Y in formulas CY52-16 and CY52-17 67 and Y 68 Each element in the set can be a single bond at the same time.

[0397] R 51a To R 51e R 61 To R 64 R 63a R 63b R 64a and R 64b Each can be associated with R. 51 The descriptions are the same, where R 51a To R 51e Each of them is not hydrogen.

[0398] R 52a To R 52e R 65 To R 68 R 67a R 67b R 68a and R 68b Each can be associated with R. 52 The descriptions are the same, where R 52a To R 52e Each of them is not hydrogen.

[0399] R 53a To R 53e R 69a and R 69b Each can be associated with R. 53 The descriptions are the same, where R 53a To R 53e Each of them may not be hydrogen, and

[0400] * Indicates the binding site with adjacent atoms.

[0401] In one or more embodiments,

[0402] In equations CY51-1 to CY51-26 and CY52-1 to CY52-26, R 51a To R 51e and R 52a To R 52e Each can be independently:

[0403] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cinolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoxazole The following groups are listed: benzoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazoyl, dibenzocarbazoyl, imidazopyridyl, imidazopyrimidinyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiophenyl, or groups represented by Formula 91: deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrole, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindole, indole, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quin Oxalinyl, quinazolinyl, cyclolinyl, carbazole, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzooxazolyl, benzisothiazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazole, dibenzocarbazole, imidazopyridyl, imidazopyrimidinyl or any combination thereof; or

[0404] -C(Q1)(Q2)(Q3) or -Si(Q1)(Q2)(Q3), and

[0405] Q1 to Q3 can each be independently unsubstituted or substituted with one of the following: phenyl, naphthyl, pyridyl, pyrimidinyl, pyridazinyl, or triazinyl: deuterium, C1-C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof.

[0406] 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

[0407] 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.

[0408] Formula 3

[0409]

[0410] In Equation 3, the ring CY 71 and CY 72 Each can independently be a π-electron-rich C3-C 60 Cyclic groups or pyridyl groups.

[0411] In Equation 3, X 71 It can be a single bond or a linking group including O, S, N, B, C, Si or any combination thereof.

[0412] In Formula 3, * indicates the binding site of the atoms included in the remainder of the third compound, excluding the groups represented by Formula 3.

[0413] Equation 3-1

[0414]

[0415] Equation 3-2

[0416]

[0417] Equation 3-3

[0418]

[0419] Equation 3-4

[0420]

[0421] Formula 3-5

[0422]

[0423] In equations 3-1 to 3-5, the ring CY 71 To CY 74 Each can independently be a π-electron-rich C3-C 60 Cyclic groups or pyridyl groups.

[0424] In equations 3-1 to 3-5, X 82 Can be a single bond, O, S, N[(L 82 ) b82 -R 82 ]、B[(L 82 ) b82 -R 82 ]、C(R 82a (R) 82b ) or Si(R 82a (R) 82b ).

[0425] In equations 3-1 to 3-5, X 83 Can be a single bond, O, S, N[(L 83 ) b83 -R 83 ]、B[(L 83 ) b83 -R 83 ]、C(R 83a (R) 83b ) or Si(R 83a (R) 83b ).

[0426] In equations 3-1 to 3-5, X 84 It can be O, S, N[(L 84 ) b84 -R 84 ]、B[(L 84 ) b84 -R 84 ]、C(R 84a (R) 84b ) or Si(R 84a (R) 84b ).

[0427] In equations 3-1 to 3-5, X 85 It can be C or Si.

[0428] In equations 3-1 to 3-5, L 81 To L 85Each can be independently a single bond, *-C(Q4)(Q5)-*', *-Si(Q4)(Q5)-*', unsubstituted, or bonded by at least one R. 10a Replacement of π-electron-rich C3-C 60 Cyclic groups, unsubstituted or with at least one R 10a Substituted π-electron-deficient nitrogen-containing C1-C 60 Heterocyclic groups, either unsubstituted or substituted with at least one R 10a Substituted pyridinyl group.

[0429] Q4 and Q5 are each the same as those described for Q1.

[0430] In Equations 3-1 to 3-5, b81 to b85 can each be an integer selected from 1 to 5 independently.

[0431] In equations 3-1 to 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 Each is the same as described in this article.

[0432] In equations 3-1 to 3-5, a71 to a74 respectively indicate R 71 The quantity up to R 74 The number of R, and each can be an integer selected independently from 0 to 20. If (for example, when) a71 is 2 or greater, then two or more R 71 They can be the same or different from each other, and if (for example, when) a72 is 2 or greater, then two or more R... 72 They can be the same or different from each other, and if (for example, when) a73 is 2 or greater, then two or more R... 73 They can be the same or different from each other, and if (for example, when) a74 is 2 or greater, then two or more R... 74 They may be the same or different from each other. In one or more embodiments, a71 to a74 may each be an integer selected from 0 to 8 independently.

[0433] R 10a It can be the same as that described in this article.

[0434] In one or more embodiments, in formulas 3-1 to 3-5, L 81 To L 85 Each can be independently:

[0435] Single key; or

[0436] *-C(Q4)(Q5)-*' or *-Si(Q4)(Q5)-*'; or

[0437] The unsubstituted or substituted of the following: phenyl, naphthyl, anthraceneyl, phenanthrene, triphenylene, pyrene, 1,2-benzophenanthrene, cyclopentadienyl, furanyl, thiophene, thiopyrrolyl, indole, fluorenyl, indole, carbazole, benzofuranyl, dibenzofuranyl, benzothiophene, dibenzothiophene, benzothiopyrrolyl, dibenzothiopyrrolyl, azafluorenyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiophene, azadibenzothiopyrrolyl, pyridine alkyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, phenanthrolinel, pyrroleyl, pyrazolyl, imidazoleyl, triazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiazolyl, benzopyrazolyl, benzimidazole, benzoxazolyl, benzothiazolyl, benzoxadiazolyl or benzothiazolyl: 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, and

[0438] Q4, Q5 and Q 31 To Q 33 Each can be independently hydrogen, deuterium, or C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, or triazinyl.

[0439] In one or more embodiments, Equations 3-1 and 3-2 are derived from... The group represented may be any group selected from formulas CY71-1(1) to CY71-1(8), and / or

[0440] In Equations 3-1 and 3-3, by The group represented may be any group selected from formulas CY71-2(1) to CY71-2(8), and / or

[0441] In Equations 3-2 and 3-4, by The group represented may be any group selected from formulas CY71-3(1) to CY71-3(32), and / or

[0442] Equations 3-3 to 3-5 are derived from The represented group may be any group selected from formulas CY71-4(1) to CY71-4(32), and / or

[0443] In Equation 3-5, by The group represented can be any group selected from formulas CY71-5(1) to CY71-5(8):

[0444]

[0445]

[0446]

[0447]

[0448] In equations 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),

[0449] X 82 To X 85 L 81 b81, R 81 and R 85 Each can be the same as described in this article.

[0450] 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),

[0451] 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 ),

[0452] X in equations CY71-1(2) to CY71-1(4), CY71-4(2) to CY71-4(4), CY71-4(10) to CY71-4(12), CY71-4(18) to CY71-4(20), and CY71-4(26) to CY71-4(28) 86 and X 87 Each element in the set can be a single bond at the same time.

[0453] 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 ),

[0454] X 89 It can be a single bond, O, S, N(R) 89 ), B(R) 89 ), C(R 89a (R) 89b ) or Si(R 89a (R) 89b ),

[0455] X in equations CY71-2(2) to CY71-2(4), CY71-3(2) to CY71-3(4), CY71-3(10) to CY71-3(12), CY71-3(18) to CY71-3(20), CY71-3(26) to CY71-3(28) and CY71-5(2) to CY71-5(4) 88 and X 89 Each element in the set can be a single bond at different times, and

[0456] R 86 To R 89 R 86a R 86b R 87a R 87b R 88a R 88bR 89a and R 89b Each can be associated with R. 81 The descriptions are the same.

[0457] Formula 502

[0458]

[0459] Formula 503

[0460]

[0461] In Equations 502 and 503, ring A 501 To Ring A 504 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0462] In Equations 502 and 503, Y 505 It can be O, S, N(R) 505 ), B(R) 505 ), C(R 505a (R) 505b ) or Si(R 505a (R) 505b ).

[0463] In Equations 502 and 503, Y 506 It can be O, S, N(R) 506 ), B(R) 506 ), C(R 506a (R) 506b ) or Si(R 506a (R) 506b ).

[0464] In Equation 503, Y 507 It can be O, S, N(R) 507 ), B(R) 507 ), C(R 507a (R) 507b ) or Si(R 507a (R) 507b ).

[0465] In Equation 503, Y 508 It can be O, S, N(R) 508 ), B(R) 508 ), C(R 508a (R) 508b ) or Si(R 508a (R) 508b ).

[0466] In Equations 502 and 503, Y51 and Y 52 Each can be independently B, P (=O), or S (=O).

[0467] In Equations 502 and 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 Each is the same as described in this article.

[0468] In equations 502 and 503, a501 to a504 respectively indicate R 501 The quantity up to R 504 The number of R, and each can be an integer selected independently from 0 to 20. If (for example, when) a501 is 2 or greater, then two or more R 501 They can be the same or different from each other. If (for example, when) a502 is 2 or greater, then two or more R... 502 They can be the same or different from each other, and if (for example, when) a503 is 2 or greater, then two or more R... 503 They can be the same or different from each other, and if (for example, when) a504 is 2 or greater, then two or more R... 504 They may be the same or different from each other. In one or more embodiments, a501 to a504 may each be an integer selected from 0 to 8 independently.

[0469] R in this disclosure 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 508aand R 508b Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroaryl, -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). Q1 to Q3 may each be the same as those described herein.

[0470] In one or more embodiments, R in Formula 2, Formula 3-1 to Formula 3-5, Formula 502 and Formula 503 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 R507a R 507b R 508a and R 508b Each can be independently:

[0471] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy;

[0472] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0473] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cinolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoxazole The following groups are listed: benzoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazoyl, dibenzocarbazoyl, imidazopyridyl, imidazopyrimidinyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiophenyl, or groups represented by Formula 91: deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, cinolinyl, carbazole, phenanthryl, benzimidazolyl, benzofuranyl, benzothiophene, benzothiazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, 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) 32 ) or any combination thereof; or

[0474] -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

[0475] Q1 to Q3 and Q 31 To Q 33 Each can be independently:

[0476] -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H or -CD2CDH2; or

[0477] Each of the following unsubstituted or substituted groups: n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, phenyl, naphthyl, pyridyl, pyrimidinyl, pyrazinyl, pyrazinyl, or triazinyl: deuterium, C1-C 10Alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl or any combination thereof.

[0478] In one or more embodiments, i) R1 to R4, R in Equation 1 1a R 1b R' and R', and ii) R in Equations 2, 3-1 to 3-5, 502 and 503 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 Each can be independently:

[0479] Hydrogen, deuterium, -F, cyano, nitro, -CH3, -CD3, -CD2H, -CDH2, -CF3, -CF2H or -CFH2;

[0480] A group selected from any one of Formulas 9-1 to 9-19; or

[0481] The group represented by any one of formulas 10-1 to 10-246, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3) or -P(=O)(Q1)(Q2) (where Q1 to Q3 are each the same as those described herein):

[0482]

[0483]

[0484]

[0485]

[0486]

[0487]

[0488] In formulas 9-1 to 9-19 and 10-1 to 10-246, * indicates the binding site with an adjacent atom, "Ph" represents phenyl, "D" represents deuterium, and "TMS" represents trimethylsilyl.

[0489] Examples of compounds

[0490] In one or more embodiments, the organometallic compound represented by Formula 1 may be (for example, selected from) any one of Compound 1 to Compound 128:

[0491]

[0492]

[0493]

[0494]

[0495]

[0496]

[0497] Figure 1 Description

[0498] Figure 1 This 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 includes a first electrode 110, a sandwich layer 130, and a second electrode 150.

[0499] In the following text, reference will be made to Figure 1 The structure of the light-emitting device 10 according to one or more embodiments and the method of manufacturing the light-emitting device 10 are described in more detail.

[0500] First electrode 110

[0501] exist Figure 1 In one or more embodiments, a substrate may be additionally provided and disposed below the first electrode 110 and / or on the second electrode 150. A glass substrate or a plastic substrate may be used as the substrate. In one or more embodiments, the substrate may be a flexible substrate and may include plastics with excellent or suitable heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0502] The first electrode 110 can be formed, for example, by depositing or sputtering a material for forming the first electrode 110 on a 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 hole injection.

[0503] The first electrode 110 may be a reflective electrode, a transmissive-reflective electrode, or a transmissive electrode. In one or more embodiments, if (for example, when) the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof. In one or more embodiments, if (for example, when) the first electrode 110 is a transmissive-reflective electrode or a reflective electrode, the material used to form the first electrode 110 may 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.

[0504] The first electrode 110 may have a monolayer structure comprising a single layer (e.g., composed of a single layer) or a multilayer structure comprising multiple layers. In one or more embodiments, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0505] mezzanine 130

[0506] The interlayer 130 may be disposed above (e.g., on) the first electrode 110. The interlayer 130 may include an emission layer.

[0507] The interlayer 130 may further include (e.g., disposed between the first electrode 110 and the emitter layer) a hole transport region and (e.g., disposed between the emitter layer and the second electrode 150) an electron transport region.

[0508] In one or more embodiments, in addition to one or more suitable organic materials, interlayer 130 may further include metal-containing compounds (such as organometallic compounds, for example, organometallic compounds represented by Formula 1) and / or inorganic materials (such as quantum dots).

[0509] In one or more embodiments, the interlayer 130 may include i) two or more emitting units stacked sequentially between the first electrode 110 and the second electrode 150, and ii) a charge generation layer between adjacent emitting units in the two or more emitting units. When the interlayer 130 includes two or more emitting units and a charge generation layer as described herein, the light-emitting device 10 may be a tandem light-emitting device.

[0510] Hole transport region in interlayer 130

[0511] The hole transport region may have i) a single-layer structure comprising a single layer (e.g., composed of a single layer) of a single material (e.g., composed of a single material), ii) a single-layer structure comprising a single layer (e.g., composed of a single layer) of multiple materials that are different from each other (e.g., composed of multiple materials that are different from each other), or iii) a multi-layer structure comprising multiple layers of multiple materials that are different from each other.

[0512] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

[0513] For example, in one or more embodiments, the hole transport region may 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, wherein the constituent layers in each structure are stacked sequentially from the first electrode 110 in the order described.

[0514] In one or more embodiments, the hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0515] Formula 201

[0516]

[0517] Formula 202

[0518]

[0519] In equations 201 and 202,

[0520] L 201 To L 204 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0521] L 205 It can be *-O-*', *-S-*', or *-N(Q) 201 )-*', unsubstituted or by at least one R 10a Replacement C1-C 20 Alkylene, unsubstituted, or with at least one R 10a Replacement C2-C 20 alkenyl, unsubstituted, or with at least one R 10a Replacement C3-C60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0522] xa1 to xa4 can each be an integer selected from 0 to 5 independently.

[0523] xa5 can be an integer selected from 1 to 10.

[0524] R 201 To R 204 and Q 201 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0525] R 201 and R 202 Optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form an unsubstituted or substituted compound with at least one R group. 10a Replacement C8-C 60 Polycyclic groups (e.g., carbazole group, etc.) (e.g., see compound HT16),

[0526] R 203 and R 204 Optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form an unsubstituted or substituted compound with at least one R group. 10a Replacement C8-C 60 Polycyclic groups, and

[0527] na1 can be an integer selected from 1 to 4.

[0528] In one or more embodiments, each of Formula 201 and Formula 202 may include at least one of the groups selected from Formula CY201 to Formula CY217:

[0529]

[0530] In equations CY201 to CY217, R 10b and R 10c Each and for R 10a The descriptions are the same, CY ring201 To CY 204 Each can be independently C3-C 20 Carbocyclic or C1-C 20 Heterocyclic group, and at least one hydrogen in formulas CY201 to CY217 may be unsubstituted or R 10a replace.

[0531] In one or more embodiments, the ring CY in formulas CY201 to CY217 201 To CY 204 Each can be independently phenyl, naphthyl, phenanthryl or anthracene.

[0532] In one or more embodiments, each of Formula 201 and Formula 202 may include at least one of the groups selected from Formula CY201 to Formula CY203.

[0533] In one or more embodiments, formula 201 may include at least one group selected from formulas CY201 to CY203 and at least one group selected from formulas CY204 to CY217.

[0534] In one or more embodiments, in formula 201, xa1 can be 1, R 201 It can be a group represented by any one of the formulas CY201 to CY203, xa2 can be 0, and R 202 It can be a group represented by any one of the formulas CY204 to CY207.

[0535] In one or more embodiments, each of Formulas 201 and 202 may not include (e.g., may exclude) any of the groups represented by Formulas CY201 to CY203.

[0536] In one or more embodiments, each of Formulas 201 and 202 may not include (e.g., may exclude) any of the groups represented by Formulas CY201 to CY203, and may include at least one of the groups selected from Formulas CY204 to CY217.

[0537] In one or more embodiments, each of Formulas 201 and 202 may not include (e.g., may exclude) any of the groups represented by Formulas CY201 to CY217.

[0538] In one or more embodiments, the hole transport region may include at least one selected from compounds HT1 to 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(naphthyl-1-yl)-N,N'-diphenyl-benzidine (NPB(NPD)), β-NPB, N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (m-MTDATA ... TPD, spiroTPD, spiroNPB, methylated NPB, 4,4'-cyclohexylbis[N,N-bis(4-methylphenyl)aniline] (TAPC), 4,4'-bis[N,N'-(3-tolyl)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 / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS) or any combination thereof:

[0539]

[0540]

[0541]

[0542]

[0543]

[0544] The thickness of the hole transport region can be approximately 50 angstroms. to approximately (For example, about to approximately 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 may be approximately [missing information]. to approximately (For example, about to approximately Furthermore, the thickness of the hole transport layer can be approximately [missing information]. to approximately (For example, about to approximately When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within their respective ranges, satisfactory hole transport characteristics can be obtained without significantly increasing the driving voltage.

[0545] The emission assist layer can increase luminous efficiency by compensating for the optical resonant distance according to the wavelength of the light emitted by the emission layer, and the electron blocking layer can block electron leakage from the emission layer to the hole transport region. Materials that may be included in the hole transport region may be included in both the emission assist layer and the electron blocking layer.

[0546] p-dopants

[0547] In one or more embodiments, in addition to one or more of the aforementioned materials, the hole transport region may further include a charge-generating material for improving conductivity. The charge-generating material may be uniformly (e.g., substantially uniformly) or non-uniformly dispersed in the hole transport region (e.g., in the form of a single layer comprising the charge-generating material, e.g., composed of the charge-generating material).

[0548] The charge-generating material can be, for example, a p-doped agent.

[0549] For example, in one or more embodiments, the LUMO level of the p-doped agent may be less than or equal to -3.5 eV.

[0550] In one or more embodiments, the p-doper may include quinone derivatives, cyano-containing compounds, compounds comprising elements EL1 and EL2, or any combination thereof.

[0551] Non-limiting examples of quinone derivatives may include tetracyanoquinone dimethyl (TCNQ) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinone dimethyl (F4-TCNQ).

[0552] Non-limiting examples of cyano-containing compounds may include dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarboxynitrile (HAT-CN) and compounds represented by formula 221:

[0553]

[0554] Equation 221

[0555]

[0556] In Equation 221,

[0557] R 221 To R 223 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, and

[0558] Selected from R 221 To R 223 At least one of them can be independently replaced by C3-C respectively. 60 Carbocyclic or C1-C 60 Heterocyclic groups: cyano; -F; -Cl; -Br; -I; C1-C substituted with cyano, -F, -Cl, -Br, -I or any combination thereof 20 Alkyl groups; or any combination thereof.

[0559] In a compound comprising elements EL1 and EL2, element EL1 may be a metal, a metalloid, and / or any combination thereof (e.g., any suitable combination), and element EL2 may be a nonmetal, a metalloid, and / or any combination thereof (e.g., any suitable combination).

[0560] Non-limiting examples of metals may include: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb) and / or cesium (Cs); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr) and / or barium (Ba); 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.); later transition metals (e.g., zinc (Zn), indium (In) and / or tin (Sn), etc.); and / or 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.).

[0561] Non-limiting examples of metalloids may include silicon (Si), antimony (Sb), and / or tellurium (Te).

[0562] Non-limiting examples of nonmetals may include oxygen (O) and / or halogens (e.g., F, Cl, Br and / or I, etc.).

[0563] Non-limiting examples of compounds including elements EL1 and EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides and / or metal iodides, etc.), quasi-metal halides (e.g., quasi-metal fluorides, quasi-metal chlorides, quasi-metal bromides and / or quasi-metal iodides, etc.), metal tellurides, or any combination thereof.

[0564] Non-limiting examples of metal oxides may 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 (e.g., MoO, Mo2O3, MoO2, MoO3 and / or Mo2O5, etc.) and / or rhenium oxides (e.g., ReO3, etc.).

[0565] Non-limiting examples of metal halides may include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and / or lanthanide metal halides.

[0566] Non-limiting examples of alkali metal halides may include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and / or CsI.

[0567] Non-limiting examples of alkaline earth metal halides may include BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2 and / or BaI2.

[0568] Non-limiting examples of transition metal halides may 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.), and tantalum halides (e.g., TaF3, TaCl3, TaB, etc.). r3 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 R... Iron(II) halides (e.g., FeF2, FeCl2, FeBr2 and / or FeI2), ruthenium halides (e.g., RuF2, RuCl2, RuBr2 and / or RuI2), osmium halides (e.g., OsF2, OsCl2, OsBr2 and / or OsI2), cobalt halides (e.g., CoF2, CoCl2, CoBr2 and / or CoI2), rhodium halides (e.g., RhF2, RhCl2, RhBr2 and / or RhI2), iridium halides (e.g., IrF2, IrCl2, IrBr2 and / or IrI2), and iridium halides (e.g., IrF2, IrCl2, IrBr2 and...). (e.g., NiF2, NiCl2, NiBr2 and / or NiI2), palladium halides (e.g., PdF2, PdCl2, PdBr2 and / or PdI2), platinum halides (e.g., PtF2, PtCl2, PtBr2 and / or PtI2), copper (I) halides (e.g., CuF, CuCl, CuBr and / or CuI), silver halides (e.g., AgF, AgCl, AgBr and / or AgI) and / or gold halides (e.g., AuF, AuCl, AuBr and / or AuI).

[0569] Non-limiting examples of post-transition metal halides may 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.).

[0570] 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.

[0571] Non-limiting examples of quasi-metal halides may include antimony halides (e.g., SbCl5, etc.).

[0572] 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.).

[0573] emission layer in interlayer 130

[0574] 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. In 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, wherein the two or more layers are in contact with or separated from each other to emit white light (e.g., combined white light). In one or more embodiments, the emitting layer may include two or more materials selected from red, green, and blue emitting materials, wherein the two or more materials are mixed with each other in a single layer to emit white light (e.g., combined white light).

[0575] In one or more embodiments, the emitter layer may include a host and a dopant (or emitter). In one or more embodiments, in addition to the host and the dopant (or emitter), the emitter layer may further include an auxiliary dopant that facilitates energy transfer to the dopant (or emitter). When the emitter layer includes a dopant (or emitter) and an auxiliary dopant, the dopant (or emitter) and the auxiliary dopant are different from each other.

[0576] The organometallic compounds represented by Formula 1 in this disclosure can be used as dopants (or emitters) or as auxiliary dopants.

[0577] Based on 100 parts by weight of the host, the amount (by weight) of dopant (or emitter) in the emitter layer can range from about 0.01 parts by weight to about 15 parts by weight.

[0578] In one or more embodiments, the emitter layer may include an organometallic compound represented by Formula 1. Based on 100 parts by weight of the emitter layer, the amount of the organometallic compound represented by Formula 1 in the emitter layer may range from about 0.01 parts by weight to about 30 parts by weight, from about 0.1 parts by weight to about 20 parts by weight, or from about 0.1 parts by weight to about 15 parts by weight.

[0579] In one or more embodiments, the emission layer may include quantum dots.

[0580] In one or more embodiments, the emission layer may include a delayed fluorescence material. The delayed fluorescence material may act as a host or dopant in the emission layer.

[0581] The thickness of the emission layer can be approximately to approximately (For example, about to approximately When the thickness of the emitting layer is within the above range, excellent or appropriate light-emitting characteristics can be obtained without significantly increasing the driving voltage.

[0582] main body

[0583] In one or more embodiments, the host in the emitter layer may include a second compound, a third compound, or any combination thereof.

[0584] In one or more embodiments, the body may include a compound represented by formula 301:

[0585] Formula 301

[0586] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 ,

[0587] In Equation 301,

[0588] Ar 301 and L 301 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0589] xb11 can be 1, 2, or 3.

[0590] xb1 can be an integer selected from 0 to 5.

[0591] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 Alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -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 ),

[0592] xb21 can be an integer selected from 1 to 5, and

[0593] Q 301 To Q 303 Each is the same as the description for Q1.

[0594] In one or more embodiments, if (for example, when) xb11 in equation 301 is 2 or greater, then two or more Ar 301 They can be connected to each other via a single key.

[0595] In one or more embodiments, the body may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0596] Formula 301-1

[0597]

[0598] Formula 301-2

[0599]

[0600] In Equations 301-1 and 301-2,

[0601] Ring A 301 To Ring A 304 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0602] X 301 It can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 (R) 305 ) or Si(R 304 (R) 305 ),

[0603] xb22 and xb23 can each be 0, 1, or 2 independently.

[0604] L 301 xb1 and R 301 Each is identical to that described in this disclosure.

[0605] L 302 To L 304 Each can be independently associated with L 301 The descriptions are the same.

[0606] xb2 to xb4 can each be independently identical to the description for xb1, and

[0607] R 302 To R 305 and R 311 To R 314 Each and for R 301 The descriptions are the same.

[0608] In one or more embodiments, the host may include an alkaline earth metal complex, a post-transition metal complex, or any combination thereof. In one or more embodiments, the host may include a Be complex (e.g., compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0609] In one or more embodiments, the main body may include: at least one selected from compounds H1 to H130; 9,10-bis(2-naphthyl)anthracene (ADN); 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN); 9,10-bis(2-naphthyl)-2-tert-butyl-anthracene (TBADN); 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP); 1,3-bis(carbazolyl-9-yl)benzene (mCP); 1,3,5-tris(carbazolyl-9-yl)benzene (TCP); or any combination thereof:

[0610]

[0611]

[0612]

[0613]

[0614]

[0615]

[0616] In one or more embodiments, the body may include a silicon-containing compound, a phosphine oxide-containing compound, or any combination thereof.

[0617] The subject may have one or more suitable modifications. For example, the subject may include only one type of compound, or it may include two or more different types of compounds.

[0618] Phosphorescent dopants

[0619] The emitting layer may include an organometallic compound represented by Formula 1 as a phosphorescent dopant.

[0620] In one or more embodiments, if (for example, when) the emitter layer comprises an organometallic compound represented by Formula 1 and the organometallic compound represented by Formula 1 is used as an auxiliary dopant, the emitter layer may further comprise a phosphorescent dopant.

[0621] Phosphorescent dopants may include at least one transition metal as the center metal.

[0622] Phosphorescent dopants may include monodentate ligands, dipentate ligands, tridentate ligands, tetradentate ligands, pentadentate ligands, hexadentate ligands, or any combination thereof.

[0623] Phosphorescent dopants can be electrically neutral.

[0624] In one or more embodiments, the phosphorescent dopant may comprise an organometallic compound represented by formula 401:

[0625] Formula 401

[0626] M(L 401 ) xc1 (L 402 ) xc2

[0627] Formula 402

[0628]

[0629] In Equations 401 and 402,

[0630] M can be a transition metal (e.g., Ir, Pt, Pd, Os, Ti, Au, Hf, Eu, Tb, Rh, Re, or Tm).

[0631] L 401 The ligand can be represented by Equation 402, and xc1 can be 1, 2, or 3, wherein if (for example, when) xc1 is 2 or greater, then two or more L 401 They can be the same or different from each other.

[0632] L 402 It can be an organic ligand, and xc2 can be 0, 1, 2, 3, or 4, wherein if (for example, when) xc2 is 2 or greater, then two or more L 402 They can be the same or different from each other.

[0633] X 401 and X 402 They can be nitrogen or carbon independently.

[0634] Ring A 401 And Ring A 402 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0635] T 401 It can be a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q) 411 )-*'、*-C(Q 411 (Q) 412 )-*'、*-C(Q 411 )=C(Q 412 )-*'、*-C(Q 411 )=*' or *=C(Q 411 )-*',

[0636] X 403 and X 404 Each can be an independent chemical bond (e.g., covalent or coordinate), O, S, N (Q) 413 ), B(Q)413 ), P(Q 413 ), C(Q 413 (Q) 414 ) or Si(Q 413 (Q) 414 ),

[0637] Q 411 To Q 414 Each is the same as the description for Q1.

[0638] R 401 and R 402 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -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 ),

[0639] Q 401 To Q 403 Each is the same as the description for Q1.

[0640] xc11 and xc12 can each independently be an integer selected from 0 to 10, and

[0641] In Equation 402, * and *' each indicate the binding site with M in Equation 401.

[0642] In one or more embodiments, in formula 402, i)X 401 It can be nitrogen, and X 402 It can be carbon, or ii)X 401 and X 402 Each of them can be nitrogen.

[0643] In one or more embodiments, if (for example, when) xc1 in equation 401 is 2 or greater, then two or more L 401 The two rings A in 401 Optionally via T as a linking group 402 Connected together, and the two rings A 402 Optionally via T as a linking group 403 Connected together (see compounds PD1 through PD4 and PD7). T 402 and T 403 Each and for T 401 The descriptions are the same.

[0644] L in Equation 401 402 It can be an organic ligand. In one or more embodiments, L 402 It may include halogens, diketone groups (e.g., acetylacetone groups), carboxylic acid groups (e.g., pyridine carboxyl groups), -C (=O), isonitrile groups, -CN groups, phosphorus-containing groups (e.g., phosphine groups and / or phosphite groups, etc.) or any combination thereof.

[0645] In one or more embodiments, the phosphorescent dopant may include (e.g., may be) at least one of compounds PD1 to PD39 (e.g., selected from any one thereof) or any combination thereof:

[0646]

[0647]

[0648]

[0649] Fluorescent dopants

[0650] In one or more embodiments, if (for example, when) the emitter layer comprises an organometallic compound represented by Formula 1 and the organometallic compound represented by Formula 1 is used as an auxiliary dopant, the emitter layer may further comprise a fluorescent dopant.

[0651] In one or more embodiments, if (for example, when) the emitter layer comprises an organometallic compound represented by Formula 1 and the organometallic compound represented by Formula 1 is used as a phosphorescent dopant, the emitter layer may further comprise an auxiliary dopant.

[0652] Fluorescent dopants and auxiliary dopants may each independently include aromatic amine compounds, styrene amine compounds, boron-containing compounds, or any combination thereof.

[0653] In one or more embodiments, the fluorescent dopant and the auxiliary dopant may each independently comprise a compound represented by Formula 501:

[0654] Formula 501

[0655]

[0656] In Equation 501,

[0657] Ar 501 L 501 To L 503 R 501 and R 502 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0658] xd1 to xd3 can each be independently 0, 1, 2, or 3, and

[0659] xd4 can be 1, 2, 3, 4, 5 or 6.

[0660] In one or more embodiments, Ar in Formula 501 501 It can be a fused ring group in which three or more monocyclic groups are fused together (e.g., anthracene, 1,2-benzophenanthrene and / or pyrene, etc.).

[0661] In one or more embodiments, xd4 in Formula 501 may be 2.

[0662] In one or more embodiments, the fluorescent dopant and the auxiliary dopant may each comprise (e.g., may be): at least one selected from compounds FD1 to FD37 (e.g., any one); 4,4'-bis(2,2-diphenylvinyl)-1,1'-biphenyl (DPVBi); 4,4'-bis[4-(N,N-diphenylamino)styryl]biphenyl (DPAVBi); or any combination thereof:

[0663]

[0664]

[0665]

[0666]

[0667] Delayed fluorescence materials

[0668] The emission layer may include a delayed fluorescence material.

[0669] In this paper, the delayed fluorescence material may be any of the compounds selected from those capable of emitting delayed fluorescence based on the delayed fluorescence emission mechanism.

[0670] Delayed fluorescence materials may include, for example, the fourth compound described herein.

[0671] Depending on the type (variety) of other materials included in the emission layer, the delayed fluorescence material included in the emission layer can act as a host or a dopant.

[0672] In one or more embodiments, the difference (e.g., the absolute value of the difference) between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material can be at least 0 eV but not greater than about 0.5 eV. When the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material is within the above range, the upconversion from the triplet state to the singlet state of the delayed fluorescent material can occur effectively, and therefore, the light-emitting device 10 can have improved luminous efficiency.

[0673] In one or more embodiments, the delayed fluorescence material may include: i) comprising at least one electron donor (e.g., π-electron-rich C3-C 60 Cyclic groups, such as carbazole groups, and at least one electron acceptor (e.g., sulfoxide, cyano, and / or a nitrogen-containing C1-C group lacking π electrons). 60 Materials containing heterocyclic groups, etc., and / or ii) comprising at least two cyclic groups fused together with each other while sharing a boron (B) in a C8-C group. 60 Materials with polycyclic groups.

[0674] Non-limiting examples of delayed fluorescence materials may include at least one selected from compounds DF1 to DF14:

[0675]

[0676]

[0677] quantum dots

[0678] In one or more embodiments, the emission layer may include quantum dots.

[0679] As used herein, the term “quantum dot” refers to a crystal of a semiconductor compound and may include any material capable of emitting light of one or more appropriate emission wavelengths depending on the size of the crystal.

[0680] The diameter of quantum dots can range, for example, from about 1 nm to about 10 nm. In this disclosure, when a quantum dot, multiple quantum dots, or quantum dot particles are spherical, "diameter" indicates the particle size or average particle size, and when the particles are non-spherical, "diameter" indicates the length of the major axis or the average length of the major axis. The diameter of the particles can be measured using a scanning electron microscope or a particle size analyzer. For example, a HORIBA LA-950 laser particle size analyzer can be used as a particle size analyzer. When the particle size is measured using a particle size analyzer, the average particle size is referred to as D. 50 D 50 The cumulative volume in a particle size distribution (e.g., cumulative distribution) corresponds to the average diameter of 50 vol% of the particles, and in a distribution curve that accumulates in the order from the smallest to the largest particle size, the value corresponding to 50% of the particle size from the smallest particle when the total number of particles is 100%.

[0681] Quantum dots can be synthesized using wet chemical processes, metal-organic chemical vapor deposition (MOCVD), molecular beam epitaxy (MBE), or any similar process.

[0682] Wet chemistry processes involve mixing quantum dot precursor materials with organic solvents and then growing quantum dot crystals. During quantum dot crystal growth, the organic solvent naturally acts as a dispersant coordinated to the surface of the quantum dot crystals and controls their growth. This allows the growth of quantum dot crystals to be controlled or selected using a less expensive and easier process than vapor deposition methods such as metal-organic chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE).

[0683] Quantum dots may include group II-VI semiconductor compounds, group III-V semiconductor compounds, group III-VI semiconductor compounds, group I-III-VI semiconductor compounds, group IV-VI semiconductor compounds, group IV elements or compounds and / or combinations thereof (e.g., any suitable combination).

[0684] Non-limiting examples of group II-VI semiconductor compounds may include (e.g., may 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, CdZ nSe, 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 thereof (e.g., any suitable combination).

[0685] Non-limiting examples of group III-V semiconductor compounds may include (e.g., may be): binary compounds, such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and / or InSb; ternary compounds, such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, and / or InPSb; quaternary compounds, such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and / or InAlPSb; and / or any combination thereof. In one or more embodiments, the group III-V semiconductor compound may further include group II elements. Non-limiting examples of group III-V semiconductor compounds that further include group II elements may include (e.g.) InZnP, InGaZnP, and / or InAlZnP, etc.

[0686] Non-limiting examples of group III-VI semiconductor compounds may include (e.g., may 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 thereof (e.g., any suitable combination).

[0687] Non-limiting examples of group I-III-VI semiconductor compounds may include (for example, may be): ternary compounds, such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2 and / or AgAlO2, etc.; quaternary compounds, such as AgInGaS, AgInGaS2, AgInGaSe, AgInGaSe2, CuInGaS and / or CuInGaS2, etc.; or any combination thereof.

[0688] Non-limiting examples of group IV-VI semiconductor compounds may include (e.g., may 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 combinations thereof (e.g., any suitable combination).

[0689] Examples of Group IV elements or compounds may include: single elements, such as Si and / or Ge; binary compounds, such as SiC and / or SiGe; and / or combinations thereof (e.g., any suitable combination).

[0690] Each element included in a multi-element compound (such as binary, ternary, and quaternary compounds) may exist in the particles in a substantially uniform or non-uniform concentration.

[0691] In one or more embodiments, the quantum dot may have a single structure in which the concentration of each element in the quantum dot is substantially uniform, or a core-shell dual structure. For example, the materials included in the core and the materials included in the shell may be different from each other.

[0692] The shell of a quantum dot can act as a protective layer to prevent chemical denaturation of the core, thus maintaining its semiconductor properties, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be single-layered or multi-layered. In one or more embodiments, the interface between the core and the shell can have a concentration gradient in which the concentration of elements present in the shell decreases toward the center of the core.

[0693] Examples of the shell for quantum dots may be oxides of metals, oxides of quasi-metals, or oxides of nonmetals, semiconductor compounds, and / or combinations thereof (e.g., any suitable combination). Non-limiting examples of oxides of metals, oxides of quasi-metals, or oxides of nonmetals may include (e.g., may 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 combinations thereof (e.g., any suitable combination). Examples of semiconductor compounds may include (e.g., may be): group II-VI semiconductor compounds as described herein; group III-V semiconductor compounds; group III-VI semiconductor compounds; group I-III-VI semiconductor compounds; group IV-VI semiconductor compounds; and / or combinations thereof (e.g., any suitable combination). For example, suitable semiconductor compounds as shells may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnSTe, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb and / or combinations thereof (e.g., any suitable combination).

[0694] The full width at half maximum (FWHM) of the emission wavelength spectrum of quantum dots can be about 45 nm or less, for example, about 40 nm or less, for example, about 30 nm or less, and within these ranges, the color purity or color reproducibility of quantum dots can be increased. Additionally, because light emitted through quantum dots is emitted in all directions, a wide viewing angle can be improved.

[0695] In addition, quantum dots can take the form of spherical nanoparticles, cone-shaped nanoparticles, multi-armed nanoparticles, cubic nanoparticles, nanotubes, nanowires, nanofibers, or nanoplates.

[0696] Because the band gap of a quantum dot can be tuned by controlling its size, light with one or more suitable wavelength bands can be obtained from the quantum dot emitting layer. Accordingly, by utilizing quantum dots of different sizes, light-emitting devices that emit light with one or more suitable wavelength bands can be implemented. In one or more embodiments, the size of the quantum dot can be selected to ensure that the quantum dot emits red, green, and / or blue light. Additionally, quantum dots of suitable size can be configured to emit white light through a combination of one or more suitable colors of light.

[0697] Electron transport region in interlayer 130

[0698] The electron transport region may have: i) a single-layer structure comprising a single layer (e.g., composed of a single layer) of a single material (e.g., composed of a single material), ii) a single-layer structure comprising a single layer (e.g., composed of a single layer) of a single material (e.g., composed of a single layer) of a single material, or iii) a multilayer structure comprising multiple layers of a multiple material.

[0699] The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0700] For example, in one or more embodiments, the electron transport region may 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, wherein the constituent layers in each structure are stacked sequentially from the emission layer in the order described.

[0701] In one or more embodiments, the electron transport region (e.g., a buffer layer, hole blocking layer, electron control layer, or electron transport layer in the electron transport region) may include a nitrogen-containing C1-C containing at least one π-deficient electron. 60 Metal-free compounds with heterocyclic groups.

[0702] In one or more embodiments, the electron transport region may include a compound represented by Formula 601.

[0703] Formula 601

[0704] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 .

[0705] In Equation 601,

[0706] Ar 601 and L 601 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0707] xe11 can be 1, 2, or 3.

[0708] xe1 can be 0, 1, 2, 3, 4, or 5.

[0709] R 601 It can be unsubstituted or by at least one R10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 601 (Q) 602 (Q) 603 -C(=O)(Q) 601 -S(=O)2(Q) 601 ) or -P(=O)(Q 601 (Q) 602 ),

[0710] Q 601 To Q 603 Each is the same as the description for Q1.

[0711] xe21 can be 1, 2, 3, 4, or 5, and

[0712] Selected from Ar 601 L 601 and R 601 At least one of them can be independently unsubstituted or by at least one R. 10a Substituted π-electron-deficient nitrogen-containing C1-C 60 Heterocyclic group.

[0713] In one or more embodiments, if (for example, when) xe11 in equation 601 is 2 or greater, then two or more Ar 601 They can be connected together with a single key.

[0714] In one or more embodiments, Ar in Formula 601 601 It can be unsubstituted or by at least one R 10a Substituted anthracene group.

[0715] In one or more embodiments, the electron transport region may include a compound represented by formula 601-1:

[0716] Formula 601-1

[0717]

[0718] In Equation 601-1,

[0719] X 614 It can be N or C(R) 614 ), X 615 It can be N or C(R) 615 ), X 616 It can be N or C(R) 616 ), and selected from X 614 To X 616At least one of them can be N,

[0720] L 611 To L 613 Each and for L 601 The descriptions are the same.

[0721] xe611 to xe613 are each the same as the description for xe1.

[0722] R 611 To R 613 Each and for R 601 The descriptions are the same, and

[0723] R 614 To R 616 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

[0724] In one or more embodiments, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 may each be 0, 1 or 2 independently.

[0725] In one or more embodiments, the electron transport region may include at least one selected from compounds ET1 to ET46, 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-hydroxyquinoline-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum (BAlq), 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), 4-(naphthyl-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (NTAZ), or any combination thereof:

[0726]

[0727]

[0728]

[0729]

[0730] The thickness of the electron transport region can be approximately to approximately 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 each be independently within approximately [a certain range]. to approximately For example, about to approximately Within a certain range, and the thickness of the electron transport layer can be approximately... to approximately For example, about to approximately Within the specified range. When the thickness of the buffer layer, hole blocking layer, electron control layer, electron transport layer and / or electron transport region is within the respective ranges mentioned above, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage.

[0731] 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 further include a metallic material.

[0732] Metal-containing materials may include alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The metal ion in an alkali metal complex may be Li, Na, K, Rb, or Cs ions, and the metal ion in an alkaline earth metal complex may be Be, Mg, Ca, Sr, or Ba ions. Ligands coordinated to the metal ions of the alkali metal complex or alkaline earth metal complex may include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof.

[0733] In 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:

[0734]

[0735] In one or more embodiments, the electron transport region may include an electron injection layer that facilitates the injection of electrons from the second electrode 150. The electron injection layer may be in direct contact with the second electrode 150.

[0736] The electron injection layer may have: i) a single-layer structure including a single layer (e.g., consisting of a single layer) that includes a single material (e.g., consisting of a single material), ii) a single-layer structure including a single layer (e.g., consisting of a single layer) that includes multiple different materials, or iii) a multi-layer structure including multiple layers that includes multiple different materials.

[0737] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0738] The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metal may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metal may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0739] The alkali metal compound, the alkaline earth metal compound, and the rare earth metal compound may respectively include oxides of alkali metals, alkaline earth metals, and rare earth metals, halides (e.g., fluorides, chlorides, bromides, and / or iodides, etc.), or tellurides, or any combination thereof.

[0740] The alkali metal compound may include: alkali metal oxides, such as Li2O, Cs2O, and / or K2O, etc.; alkali metal halides, such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI, etc.; or any combination thereof. The alkaline earth metal compound may include alkaline earth metal oxides, 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-x O (x is a real number satisfying 0 < x < 1). The rare earth metal compound may include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, or any combination thereof. In one or more embodiments, the rare earth metal compound may include lanthanide metal tellurides. Non-limiting examples of lanthanide metal tellurides may 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.

[0741] Alkali metal complexes, alkaline earth metal complexes, and rare earth metal complexes may include: i) one of the metal ions of an alkali metal, one of the metal ions of an alkaline earth metal, and one of the metal ions of a rare earth metal, and ii) a ligand bonded to the metal ion (e.g., the respective metal ion), such as hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenidine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0742] In one or more embodiments, the electron-injected layer may include (e.g., composed of): alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof as described above. In one or more embodiments, the electron-injected layer may further include organic materials (e.g., compounds represented by Formula 601).

[0743] In one or more embodiments, the electron-injected layer may include (e.g., composed of): i) an alkali metal compound (e.g., an alkali metal halide); or ii) a) an alkali metal compound (e.g., an alkali metal halide), and b) an alkali metal, alkaline earth metal, rare earth metal, or any combination thereof. In one or more embodiments, the electron-injected layer may be a KI:Yb co-deposited layer, an RbI:Yb co-deposited layer, and / or a LiF:Yb co-deposited layer, etc.

[0744] When the electron injection layer further comprises organic materials, alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof may be uniformly (e.g., substantially uniformly) or non-uniformly dispersed in the matrix comprising the organic materials.

[0745] The thickness of the electron injection layer can be approximately to approximately For example, about to approximately When the thickness of the electron injection layer is within the range described above, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0746] Second electrode 150

[0747] The second electrode 150 may be disposed on the interlayer 130, for example. The second electrode 150 may be a cathode serving as an electron injection electrode, and may be a metal, alloy, conductive compound, or any combination thereof, each having a low work function, as a material for forming the second electrode 150.

[0748] The second electrode 150 may 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 may be a transmission electrode, a transmission-reflection electrode, or a reflection electrode.

[0749] The second electrode 150 may have a single-layer structure or a multi-layer structure including multiple layers.

[0750] Capping layer

[0751] In one or more embodiments, a first capping layer may be disposed outside the first electrode 110 (e.g., on the first electrode 110) and / or a second capping layer may be disposed outside the second electrode 150 (e.g., on the second electrode 150). In one or more embodiments, the light-emitting device 10 may have a structure in which the first capping layer, the first electrode 110, the interlayer 130, and the second electrode 150 are stacked sequentially in the described order, or a structure in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are stacked sequentially in the described order, or a structure in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are stacked sequentially in the described order.

[0752] In one or more embodiments, light generated in the emitting layer of the interlayer 130 of the light-emitting device 10 can be extracted outward through a first electrode 110, which serves as a transmissive or reflective electrode, and a first capping layer. In one or more embodiments, light generated in the emitting layer of the interlayer 130 of the light-emitting device 10 can be extracted outward through a second electrode 150, which serves as a transmissive or reflective electrode, and a second capping layer.

[0753] The first and second capping layers can increase the external emission efficiency based on the principle of constructive interference. Correspondingly, the light extraction efficiency of the light-emitting device 10 is increased, which in turn increases the luminous efficiency of the light-emitting device 10.

[0754] Each of the first and second capping layers may include (at 589 nm) a material having a refractive index of 1.6 or greater.

[0755] The first capping layer and the second capping layer can each be an organic capping layer including organic materials, an inorganic capping layer including inorganic materials, or an organic-inorganic composite capping layer including both organic and inorganic materials.

[0756] At least one of the first and second capping layers may (e.g., the first and second capping layers may each independently) comprise a carbocyclic compound, a heterocyclic compound, an amino-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthyl phthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, heterocyclic compound, and amino-containing compound may each optionally be substituted with a substituent comprising O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In one or more embodiments, at least one of the first and second capping layers may (e.g., the first and second capping layers may each independently) comprise an amino-containing compound.

[0757] In one or more embodiments, at least one of the first capping layer and the second capping layer may (e.g., the first capping layer and the second capping layer may each independently) include a compound represented by formula 201, a compound represented by formula 202, or any combination thereof.

[0758] In one or more embodiments, at least one of the first capping layer and the second capping layer may (e.g., the first capping layer and the second capping layer may each independently) include (e.g., selected from) one of compounds HT28 to HT33, (e.g., selected from) one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0759]

[0760] membrane

[0761] The organometallic compound represented by Formula 1 may be included in one or more suitable films. Accordingly, one or more aspects of embodiments of this disclosure relate to films comprising organometallic compounds represented by Formula 1. The film may be, for example, an optical component (or light control element) (e.g., a color filter, a color conversion component, a capping layer, a light extraction efficiency enhancement layer, a selective light absorption layer, a polarizing layer, and / or a content sub-dot layer, etc.), a light blocking component (e.g., a light reflecting layer and / or a light absorbing layer, etc.), and / or a protective component (e.g., an insulating layer and / or a dielectric layer, etc.).

[0762] electronic devices

[0763] The light-emitting device may be included in one or more suitable electronic devices. For example, in one or more embodiments, the electronic device including the light-emitting device may be a light-emitting device and an authentication device, etc.

[0764] In one or more embodiments, in addition to the light-emitting device, the electronic device (e.g., the light-emitting device) may further 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 may be arranged in at least one direction of travel of the light emitted from the light-emitting device. For example, in one or more embodiments, the light emitted from the light-emitting device may be blue light, green light, or white light (e.g., a combination of white light). A detailed description of the light-emitting device has been provided above. In one or more embodiments, the color conversion layer may include quantum dots.

[0765] An electronic device may include a first substrate. The first substrate may include a plurality of sub-pixel regions, a color filter may include a plurality of color filter regions corresponding to the plurality of sub-pixel regions, and a color conversion layer may include a plurality of color conversion regions corresponding to the plurality of sub-pixel regions.

[0766] A pixel-defining film can be arranged between multiple sub-pixel regions to define each of the multiple sub-pixel regions.

[0767] The color filter may further include a plurality of color filter areas and a light-blocking pattern arranged between the plurality of color filter areas, and the color conversion layer may further include a plurality of color conversion areas and a light-blocking pattern arranged between the plurality of color conversion areas.

[0768] Multiple color filter regions (or multiple color conversion regions) may include a first region configured to emit a first color of light, a second region configured to emit a second color of light, and / or a third region configured to emit a third color of light, wherein the first color of light, the second color of light, and / or the third color of light may have different maximum emission wavelengths. In one or more embodiments, the first color of light may be red light, the second color of light may be green light, and the third color of light may be blue light. In one or more embodiments, the multiple color filter regions (or multiple color conversion regions) may include quantum dots. For example, in one or more embodiments, the first region may include red quantum dots to emit red light, the second region may include green quantum dots to emit green light, and the third region may not include (e.g., may exclude) quantum dots. A detailed description of quantum dots may refer to the description provided herein. The first region, the second region, and / or the third region may each further include a scatterer.

[0769] In one or more embodiments, the light-emitting device can emit first light, a first region can absorb the first light to emit first-first-color light, a second region can absorb the first light to emit second-first-color light, and a third region can absorb the first light to emit third-first-color light. In this case, 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.

[0770] In one or more embodiments, in addition to the light-emitting device as described above, the electronic device may further include a thin-film transistor. The thin-film transistor may include a source electrode, a drain electrode, and an active layer, wherein one of the source electrode and the drain electrode is electrically connected to a first electrode or a second electrode of the light-emitting device.

[0771] Thin-film transistors may further include gate electrodes and / or gate insulating films, etc.

[0772] The active layer may include crystalline silicon, amorphous silicon, organic semiconductors and / or oxide semiconductors, etc.

[0773] In one or more embodiments, the electronic device may further include a sealing portion for sealing the light-emitting device. The sealing portion may be disposed between the color filter and / or color conversion layer and the light-emitting device. The sealing portion allows light from the light-emitting device to be extracted to the outside, while simultaneously (e.g., synchronously) preventing ambient air and moisture from penetrating into the light-emitting device. The sealing portion may be a sealing substrate comprising a transparent glass substrate or a plastic substrate. The sealing portion may be a thin-film encapsulation layer comprising at least one of an organic layer and an inorganic layer. When the sealing portion is a thin-film encapsulation layer, the electronic device may be flexible.

[0774] In one or more embodiments, depending on the purpose of the electronic device, various functional layers may be additionally arranged on the sealing portion in addition to color filters and / or color conversion layers. Non-limiting examples of functional layers may include a touchscreen layer and a polarizing layer. The touchscreen layer may be a pressure-sensitive touchscreen layer, a capacitive touchscreen layer, or an infrared touchscreen layer.

[0775] In addition to the light-emitting device described above, the authentication device may further include a biometric information collector. The authentication device may be a biometric authentication device that authenticates an individual, for example, by using biometric information from a living body (e.g., fingertip and / or pupil).

[0776] Electronic devices may be applied to one or more displays, light sources, lighting devices, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, video game consoles, medical tools (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasound diagnostic devices, or endoscopic displays), fish finders, one or more suitable measuring tools, instruments (e.g., instruments for vehicles, aircraft, and ships), and / or projectors, etc.

[0777] Electronic equipment

[0778] The light-emitting device may be included in one or more suitable electronic devices.

[0779] In one or more embodiments, the electronic device including the light-emitting device may be at least one of the following: flat panel display, curved display, computer monitor, medical monitor, television, billboard, indoor light, outdoor light, signal light, head-up display, fully transparent display, partially transparent display, flexible display, rollable display, foldable display, retractable display, laser printer, telephone, portable telephone, tablet PC, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, digital camera, camcorder, viewfinder, microdisplay, 3D display, virtual reality display, augmented reality display, vehicle, video wall with multiple displays spliced ​​together, theater screen, stadium screen, phototherapy device, and sign.

[0780] Because light-emitting devices have excellent or adequate effects in terms of luminous efficiency and long lifespan, electronic devices and electronic equipment that include light-emitting devices can have the characteristics of high brightness, high resolution and low power consumption.

[0781] Figure 2 and Figure 3 Description

[0782] Figure 2 A schematic cross-sectional view showing the structure of a light-emitting device as an example of an electronic device according to one or more embodiments.

[0783] Figure 2 The light-emitting device may include a substrate 100, a thin-film transistor (TFT), a light-emitting device, and a sealing portion 300 for sealing the light-emitting device.

[0784] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer 210 may be disposed on the substrate 100, for example. The buffer layer 210 may prevent or reduce the penetration of impurities through the substrate 100 and may provide a flat surface on the substrate 100.

[0785] The TFT may be disposed on (for example, on) buffer layer 210. The TFT may include active layer 220, gate electrode 240, source electrode 260 and drain electrode 270.

[0786] The active layer 220 may include inorganic semiconductors (such as silicon or polysilicon), organic semiconductors or oxide semiconductors, and may include source region, drain region and channel region.

[0787] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 may be disposed on the active layer 220, and the gate electrode 240 may be disposed on the gate insulating film 230.

[0788] The interlayer insulating film 250 may be disposed on the gate electrode 240, for example. The interlayer insulating film 250 may 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 these electrodes from each other.

[0789] The source electrode 260 and the drain electrode 270 may be (e.g., disposed on) the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 may be formed to expose the source region and drain region of the active layer 220, and the source electrode 260 and the drain electrode 270 may be disposed to contact the exposed portions of the source region and drain region of the active layer 220, respectively.

[0790] The TFT can be electrically connected to a light-emitting device to drive the light-emitting device, and can be covered and protected by a passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or any combination thereof. The light-emitting device may be provided on the passivation layer 280. The light-emitting device may include a first electrode 110, a sandwich layer 130, and a second electrode 150.

[0791] The first electrode 110 may be disposed on (for example,) a passivation layer 280. The passivation layer 280 may be disposed to expose a portion of the drain electrode 270, not completely covering the drain electrode 270, and the first electrode 110 may be disposed to connect to the exposed portion of the drain electrode 270.

[0792] A pixel defining film 290, including an insulating material, may be disposed on (e.g., on) the first electrode 110. The pixel defining film 290 may expose a specific area of ​​the first electrode 110, and an interlayer 130 may be formed in the exposed area of ​​the first electrode 110. The pixel defining film 290 may be a polyimide-based organic film or a polyacrylic acid-based organic film. In one or more embodiments, at least some layers of the interlayer 130 may extend beyond the upper portion of the pixel defining film 290 to be arranged as a common layer.

[0793] The second electrode 150 may be disposed on the interlayer 130, for example, and the second capping layer 170 may additionally be formed on the second electrode 150. The second capping layer 170 may be formed to cover the second electrode 150.

[0794] The sealing portion 300 may be (e.g., disposed on) the second sealing layer 170. The sealing portion 300 may be disposed on the light-emitting device to protect it from moisture and / or oxygen. The sealing portion 300 may include an inorganic film, which includes silicon nitride (SiN). x ), silicon dioxide (SiO) x Indium tin oxide, indium zinc oxide, or any combination thereof; organic membranes, including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, 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 combinations of inorganic and organic membranes (e.g., any suitable combination).

[0795] Figure 3 This is a schematic cross-sectional view of the structure of a light-emitting device, which is an example of an electronic device according to one or more embodiments.

[0796] Figure 3 Light-emitting devices and Figure 2 The light-emitting devices are essentially the same, except that the light-shielding pattern 500 and the functional area 400 are additionally arranged on the sealing portion 300. The functional area 400 may be: i) a color filter area, ii) a color conversion area, or iii) a combination of a color filter area and a color conversion area. In one or more embodiments, Figure 3 The light-emitting device included in the light-emitting device can be a series of light-emitting devices.

[0797] Figure 4 Description

[0798] Figure 4This is a schematic perspective view of an electronic device 1 including a light-emitting device according to one or more embodiments of the present disclosure. As a device for displaying moving or still images, the electronic device 1 may be a portable electronic device (such as a mobile phone, smartphone, tablet PC, mobile communication terminal, e-notebook computer, e-reader, portable multimedia player (PMP), navigation or ultra-mobile PC (UMPC)) and one or more suitable products (such as a television, laptop computer, monitor, billboard, or Internet of Things (IoT) device). The electronic device 1 may be one or more of these products. Additionally, the electronic device 1 may be a wearable device (such as a smartwatch, watch phone, glasses-type display, or head-mounted display (HMD)), or a part of a wearable device. However, embodiments of the present disclosure are not limited thereto. In one or more embodiments, the electronic device 1 may be a vehicle's dashboard, a central information display (CID) arranged on the vehicle's center console or dashboard, an interior rearview mirror display replacing the vehicle's side mirrors, an entertainment display for the vehicle's rear seats, a display arranged on the back of the vehicle's front seats, a head-up display (HUD) mounted on the front of the vehicle or projected onto its windshield, or a computer-generated holographic augmented reality head-up display (CGH AR HUD). For ease of explanation, Figure 4 The invention explains one or more implementations of the electronic device 1 as a smartphone.

[0799] Electronic device 1 may include a display area DA and a non-display area NDA outside the display area DA (e.g., around the display area DA). The display device of electronic device 1 can implement an image by means of an array of multiple pixels arranged in two dimensions in the display area DA.

[0800] The non-display area NDA is an area where no image is displayed and may completely surround (e.g., enclose) the display area DA. Drivers for providing electrical signals or power to display elements arranged in the display area DA may be arranged in the non-display area NDA. Pads for electrically connecting electronic components or printed circuit boards may be arranged in the non-display area NDA.

[0801] In electronic device 1, the length in the x-axis direction and the length (e.g., width) in the y-axis direction may be different from each other. In one or more embodiments, such as Figure 4 As shown, the length in the x-axis direction may be less than the length in the y-axis direction (e.g., width). In one or more embodiments, the length in the x-axis direction may be substantially the same as the length in the y-axis direction (e.g., width). In one or more embodiments, the length in the x-axis direction may be greater than the length in the y-axis direction (e.g., width).

[0802] Figure 5 and Figures 6A to 6C Description

[0803] Figure 5 This is a schematic diagram of the exterior of a vehicle 1000, which is an electronic device including a light-emitting device, according to one or more embodiments of the present disclosure. Figures 6A to 6C Each of the above is a schematic diagram of the interior of a vehicle 1000 according to one or more embodiments of the present disclosure.

[0804] refer to Figure 5 , Figure 6A , Figure 6B and Figure 6C Vehicle 1000 can refer to one or more suitable devices used to move an object (such as a person, object, or animal) from a point of origin to a point of destination. Vehicle 1000 can include vehicles that travel on roads or tracks, vessels that move on oceans or rivers, and / or aircraft that fly in the air using air action.

[0805] In one or more embodiments, vehicle 1000 may travel on a road or track. Vehicle 1000 may move in a particular direction depending on the rotation of at least one of its wheels. In one or more embodiments, vehicle 1000 may include a three-wheeled or four-wheeled vehicle, construction machinery, a two-wheeled vehicle, a prime mover, a bicycle, or a train traveling on a track.

[0806] Vehicle 1000 may include a body having an interior and an exterior, and a chassis therein, in which driving-related mechanical equipment is mounted, as other parts besides the body of vehicle 1000. The exterior of the vehicle 1000's body may include a front panel, hood, roof panel, rear panel, trunk, and / or pillars provided at the boundaries between the doors. The chassis of vehicle 1000 may include a power generation unit, power transmission unit, drive unit, steering unit, braking unit, suspension unit, transmission unit, fuel system, front and rear wheels, and / or left and right wheels.

[0807] Vehicle 1000 may include side window glass 1100, front window glass 1200, side mirror 1300, instrument panel 1400, center console 1500, passenger seat instrument panel 1600 and display device 2.

[0808] The side window 1100 and the front window 1200 can be separated by a pillar arranged between the side window 1100 and the front window 1200.

[0809] Side window 1100 may be mounted on the side of vehicle 1000. In one or more embodiments, side window 1100 may be mounted on a door of vehicle 1000. Multiple side window 1100s may be provided and may face each other. In one or more embodiments, side window 1100 may include a first side window 1110 and a second side window 1120. In one or more embodiments, the first side window 1110 may be arranged adjacent to dashboard 1400. The second side window 1120 may be arranged adjacent to passenger seat dashboard 1600.

[0810] In one or more embodiments, the side window glass 1100 may be separated from each other (e.g., spaced apart or separated) in the x-axis direction or the -x-axis direction (the direction opposite to the x-axis direction). In one or more embodiments, the first side window glass 1110 and the second side window glass 1120 may be separated from each other (e.g., spaced apart or separated) in the x-axis direction or the -x-axis direction. For example, an imaginary straight line L connecting the side window glass 1100 may extend in the x-axis direction or the -x-axis direction. In one or more embodiments, an imaginary straight line L connecting the first side window glass 1110 and the second side window glass 1120 may extend in the x-axis direction or the -x-axis direction.

[0811] The windshield 1200 may be installed at the front of the vehicle 1000. The windshield 1200 may be arranged between the side windows 1100 that are opposite to each other (e.g., facing each other).

[0812] The side mirror 1300 provides a rear view of the vehicle 1000. The side mirror 1300 may be mounted on the exterior of the vehicle body. In one or more embodiments, a plurality of side mirrors 1300 may be provided. Any one of the plurality of side mirrors 1300 may be positioned on the outer side of the first side window 1110. Another of the plurality of side mirrors 1300 may be positioned on the outer side of the second side window 1120.

[0813] The instrument panel 1400 may be positioned in front of the steering wheel. The instrument panel 1400 may include a tachometer, speedometer, coolant temperature gauge, fuel gauge, turn signal indicator, high beam indicator, warning lights, seat belt warning lights, odometer, driving recorder, automatic gear selector, door opening warning light, oil warning light, and / or low fuel warning light.

[0814] The center console 1500 may include a control panel on which multiple buttons for adjusting audio devices, air conditioning devices, and / or seat heaters may be arranged. The center console 1500 may be located on one side of the instrument panel 1400.

[0815] The passenger seat instrument panel 1600 may be separated from and / or partitioned from the instrument cluster 1400 (e.g., spaced apart or separate), and the center console 1500 may be arranged between the instrument cluster 1400 and the passenger seat instrument panel 1600. In one or more embodiments, the instrument cluster 1400 may be arranged corresponding to the driver's seat, and the passenger seat instrument panel 1600 may be arranged corresponding to the passenger seat. In one or more embodiments, the instrument cluster 1400 may be adjacent to a first side window 1110, and the passenger seat instrument panel 1600 may be adjacent to a second side window 1120.

[0816] In one or more embodiments, the display device 2 may include a display panel 3, and the display panel 3 may display images. The display device 2 may be arranged inside the vehicle 1000. In one or more embodiments, the display device 2 may be arranged between side window glass 1100s that are opposite to each other (e.g., facing each other). The display device 2 may be arranged on at least one of the instrument panel 1400, the center console 1500, and the passenger seat instrument panel 1600.

[0817] Display device 2 may include organic light-emitting display devices, inorganic electroluminescent display devices, and / or quantum dot display devices, etc. Hereinafter, an organic light-emitting display device incorporating the light-emitting device of this disclosure will be described as display device 2 according to one or more embodiments, but one or more suitable types (categories) of display devices as described above may be used in embodiments.

[0818] refer to Figure 6A In one or more embodiments, the display device 2 may be arranged on the center console 1500. In one or more embodiments, the display device 2 may display navigation information. In one or more embodiments, the display device 2 may display information related to audio settings, video settings, or vehicle settings.

[0819] refer to Figure 6B In one or more embodiments, the display device 2 may be arranged on the instrument panel 1400. In these embodiments, the instrument panel 1400 may display driving information, etc., via the display device 2. For example, the instrument panel 1400 may digitally display driving information, etc. The instrument panel 1400 may digitally display vehicle information and driving information as images. In one or more embodiments, the tachometer pointer and gauges, as well as one or more appropriate warning light icons, may be displayed via digital signals.

[0820] refer to Figure 6CIn one or more embodiments, the display device 2 may be arranged on the passenger seat instrument panel 1600. The display device 2 may be embedded in or arranged on the passenger seat instrument panel 1600. In one or more embodiments, the display device 2 arranged on the passenger seat instrument panel 1600 may display images related to information displayed on the instrument panel 1400 and / or on the center console 1500. In one or more embodiments, the display device 2 arranged on the passenger seat instrument panel 1600 may display information different from the information displayed on the instrument panel 1400 and / or on the center console 1500.

[0821] Manufacturing method

[0822] The layers constituting the hole transport region, the emission layer, and the electron transport region can each be formed in a specific region using one or more suitable methods (such as vacuum deposition, spin coating, casting, Langmuir-Brookett (LB) deposition, inkjet printing, laser printing, and / or laser-induced thermal imaging).

[0823] When the layers constituting the hole transport region, the emitter layer, and the electron transport region are each formed by vacuum deposition, the deposition can be carried out at a deposition temperature in the range of about 100°C to about 500°C, and at a deposition temperature of about 10°C. -8 To about 10 -3 Vacuum degree and approximately within the range of Torr to approximately The deposition rate is carried out within a range that depends on the material to be included in the layer to be formed and the structure of the layer to be formed.

[0824] Terminology limitations

[0825] As used in this article, the term "C3-C" 60 "Carbocyclic group" refers to a cyclic group that includes only carbon atoms as cyclic atoms and has 3 to 60 carbon atoms, and is referred to herein as "C1-C". 60 A "heterocyclic group" refers to a cyclic group having 1 to 60 carbon atoms and further including heteroatoms as cyclic atoms in addition to carbon atoms. (C3-C) 60 Carbocyclic groups and C1-C 60 The heterocyclic group can be a monocyclic group comprising one (exactly one) ring (e.g., composed of a single ring) or a polycyclic group in which two or more rings are fused together. In one or more embodiments, C1-C 60 The number of cyclic atoms in a heterocyclic group can range from 3 to 61.

[0826] As used herein, the term "cyclic group" may (e.g., simultaneously) include C3-C 60 Carbocyclic groups and C1-C 60 Both heterocyclic groups.

[0827] As used in this article, “π-electron-rich C3-C” 60 "Cyclic group" refers to a cyclic group having 3 to 60 carbon atoms and excluding *-N=*' as a cyclic moiety, and as used herein, "a nitrogen-containing C1-C group lacking π electrons". 60 "Heterocyclic group" refers to a heterocyclic group having 1 to 60 carbon atoms and including *-N=*' as a cyclic moiety.

[0828] In one or more embodiments,

[0829] C3-C 60 The carbocyclic group can be i) group T1, or ii) a fused-ring group in which two or more groups T1 are fused together (e.g., cyclopentadienyl, adamantyl, norbornel, phenyl, pentaenyl, naphthyl, azuleyl, indaryl, acenaphthel, phenanthyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenantyl, peryl, penfenyl, heptaenyl, tetraphenyl, framyl, hexaphenyl, pentaphenyl, rubidyl, keratyl, ovoleyl, indole, fluorenyl, spirodifluorenyl, benzofluorenyl, indophenantyl, or indoanthrayl).

[0830] C1-C 60 The heterocyclic group can be i) group T2, ii) a fused-ring group in which two or more groups T2 are fused together, or iii) a fused-ring group in which at least one group T2 and at least one group T1 are fused together (e.g., pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzothiophene, dibenzofuranyl, indocarbazole, indolecarbazole, benzofuranocarbazole, benzothiophenecarbazole, benzothiophenecarbazole, benzoindocarbazole, benzocarbazole, benzonaphthofuranyl, benzonaphthophene, benzonaphthothiophene, benzofuranodibenzofuranyl, benzofuranyl... Brønsted dibenzothiophene, benzothiophene dibenzothiophene, pyrazolyl, imidazole, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, benzopyrazolyl, benzimidazolyl, benzooxazolyl, benzoisooxazolyl, benzothiazolyl, benzoisothiazolyl, pyridyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzyl (e.g., benzo[i]isoquinolinyl, quinoxalinyl, benzo[i]quinoxalinyl, quinazolinyl, benzo[i]quinoxalinyl, phenanthrolinyl, cenolinyl, phthalazinyl, naphthidyl, imidazo[i]pyridinyl, imidazo[i]pyrimidinyl, imidazo[i]triazinyl, imidazo[i]pyrazinyl, imidazo[i]pyridazinyl, azacarbazoyl, azafluorenyl, azadibenzothiopheneyl, azadibenzothiopheneyl and / or azadibenzofuranyl, etc.)

[0831] C3-C rich in π electrons 60 The cyclic group may be i) group T1, ii) a fused ring group in which two or more groups T1 are fused together, iii) group T3, iv) a fused ring group in which two or more groups T3 are fused together, or v) a fused ring group in which at least one group T3 and at least one group T1 are fused together (e.g., C3-C). 60 Carbocyclic, 1H-pyrrole, thiorrole, borocyclopentadienyl, 2H-pyrrole, 3H-pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiorrole, benzothiophene, benzofuranyl, carbazole, dibenzothiorrole, dibenzothiophene, dibenzofuranyl, indole-carbazole, indole-carbazole, benzofuran-carbazole, benzothiophene-carbazole, benzothiorrole-carbazole, benzoindole-carbazole, benzocarbazole, benzonaphthofuranyl, benzonaphthophene, benzonaphthorrole, benzofuran-dibenzofuranyl, benzofuran-dibenzothiophene and / or benzothiophene-dibenzothiophene, etc.

[0832] Nitrogen-containing C1-C lacking π electrons 60 The heterocyclic group may be i) group T4, ii) a fused ring group in which two or more groups T4 are fused together, iii) a fused ring group in which at least one group T4 and at least one group T1 are fused together, iv) a fused ring group in which at least one group T4 and at least one group T3 are fused together, or v) a fused ring group in which at least one group T4, at least one group T1 and at least one group T3 are fused together (e.g., pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, benzopyrazolyl, etc.). Benzimidazolyl, benzoxazolyl, benzoisoxazolyl, benzothiazolyl, benzoisothiazolyl, pyridinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinel, cenolinyl, phthalazinyl, naphthinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiopheneyl, azadibenzothiopheneyl and / or azadibenzofuranyl, etc.

[0833] Group T1 can be cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclobutenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cyclohexadienyl, cycloheptenyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptane), norbornyl, bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[2.2.2]octane, or phenyl.

[0834] The group T2 can be furanyl, thiopheneyl, 1H-pyrrolyl, thiopheneyl, borocyclopentadienyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathiazolyl, azaboracyclopentadienyl, pyridinyl, pyrimidinyl, pyrazinyl, pyrazinyl, triazinyl, tetraazinyl, pyrrolylalkyl, imidazolyl, dihydropyrrolyl, piperidinyl, tetrahydropyridinyl, dihydropyridinyl, hexahydropyrimidinyl, tetrahydropyrimidinyl, dihydropyrimidinyl, piperazinyl, tetrahydropyrazinyl, dihydropyrazinyl, tetrahydropyrazinyl, or dihydropyrazinyl.

[0835] Group T3 can be furanyl, thiophene, 1H-pyrrole, thiophene, or borocyclopentadienyl, and

[0836] The group T4 can be 2H-pyrrole, 3H-pyrrole, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, azirthiolyl, aziboranecyclopentadienyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or tetraazinyl.

[0837] As used in this article, the terms "cyclic group" and "C3-C" are similar to those used in this text. 60 "Carbocyclic group", "C1-C" 60 Heterocyclic groups, π-electron-rich C3-C 60 "Cyclic groups" and "nitrogen-containing C1-C groups lacking π electrons" 60 "Heterocyclic group" can each refer to a monovalent or polyvalent group (e.g., divalent, trivalent, and / or tetravalent group, etc.) that is fused (e.g., bonded together) with a cyclic group according to the structure of the formula using the corresponding term. In one or more embodiments, "phenyl" can be benzo[a], phenyl, and / or phenylene, etc., which can be readily understood by those skilled in the art based on the structure of a formula including "phenyl".

[0838] Unit price C3-C 60 Carbocyclic groups and monovalent C1-C 60 Non-limiting examples of heterocyclic groups may include C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups. Divalent C3-C 60 Carbocyclic groups and divalent C1-C 60 Non-limiting examples of heterocyclic groups may include C3-C 10 Cycloalkylene, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkylene, C1-C 10 Heterocyclic alkenyl, C6-C 60 aryl, C1-C 60 Hypoaryl, divalent non-aromatic fused polycyclic groups and divalent non-aromatic fused heterocyclic groups.

[0839] As used in this article, the term "C1-C" 60 "alkyl" refers to a monovalent group of a straight-chain or branched aliphatic hydrocarbon having 1 to 60 carbon atoms, and non-limiting examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, n-hexyl, isohexyl, sec-hexyl, tert-hexyl, n-heptyl, isoheptyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodel, sec-decyl, and tert-decyl. The term "C1-C" as used herein... 60 "alkylene" refers to C1-C 60 Alkyl groups have essentially the same divalent structure.

[0840] As used in this article, the term "C2-C" 60 "Alkenyl" refers to the group formed at C2-C. 60 The alkyl group has at least one carbon-carbon double bond at its middle or end, and non-limiting examples include vinyl, propenyl, and butenyl groups. As used herein, the term "C2-C" is used... 60 "Alkenyl" refers to C2-C 60 Alkenes have divalent groups with essentially the same structure.

[0841] As used in this article, the term "C2-C" 60 "Alkyne group" refers to the group at C2-C 60 The alkyl group has at least one monovalent hydrocarbon group with a carbon-carbon triple bond in the middle or at the end, and non-limiting examples include ethynyl and propynyl groups. As used herein, the term "C2-C" is used... 60 "Immyneyl" refers to C2-C 60 The alkynyl group is a divalent group with essentially the same structure.

[0842] As used in this article, the term "C1-C" 60 "Alkoxy" refers to the compound formed by -OA 101 (where A) 101 For C1-C 60 Alkyl groups are monovalent groups, and non-limiting examples include methoxy, ethoxy, and isopropoxy.

[0843] As used in this article, the term "C3-C" 10 "Cycloalkyl" refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and non-limiting examples may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl group (i.e., adamantyl), norbornyl (i.e., norbornyl) (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl and / or bicyclo[2.2.2]octyl, etc. The term "C3-C" as used herein... 10 "Cycloalkylene" refers to C3-C 10 Cycloalkyl groups have divalent groups with essentially the same structure.

[0844] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl" refers to a monovalent cyclic group having 1 to 10 carbon atoms and further comprising at least one heteroatom as a cyclic atom in addition to the carbon atoms, and non-limiting examples include 1,2,3,4-oxatriazolyl, tetrahydrofuranyl, and tetrahydrothiophenyl. The term "C1-C" as used herein is also used. 10 "Heterocyclic alkyl" refers to C1-C 10 Heterocyclic alkyl groups have divalent groups with essentially the same structure.

[0845] As used in this article, the term "C3-C" 10 "Cycloalkenyl" refers to a monovalent cyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring, and being non-aromatic, and non-limiting examples include cyclopentenyl, cyclohexenyl, and cycloheptenyl. The term "C3-C" is used as is herein. 10 "Biopylene" refers to C3-C 10 Cycloalkenyl groups are divalent groups with essentially the same structure.

[0846] As used in this article, the term "C1-C" 10 "Heterocyclic alkenyl" refers to a monovalent cyclic group having 1 to 10 carbon atoms, further including at least one heteroatom as a cyclic atom in addition to the carbon atoms, and having at least one double bond in its ring. C1-C 10Non-limiting examples of heterocyclic alkenyl groups include 4,5-dihydro-1,2,3,4-oxarizolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothiophenyl. The term "C1-C" is used herein. 10 "Heterocyclic alkenyl" refers to C1-C 10 Heterocyclic alkenyl groups have divalent groups with essentially the same structure.

[0847] As used in this article, the term "C6-C" 60 "Aryl" refers to a monovalent group in a carbocyclic aromatic system having 6 to 60 carbon atoms, and as used herein, "C6-C" 60 "Arylene" refers to a divalent group in a carbocyclic aromatic system with 6 to 60 carbon atoms. (C6-C) 60 Non-limiting examples of aryl groups include phenyl, pentanenyl, naphthyl, azulel, indole, acenaphthel, phenanthyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentanenyl, heptanenyl, tetraphenyl, framyl, hexaphenyl, pentaphenyl, rubiginyl, myristyl, and ovoleyl. When C6-C 60 Aryl and C6-C 60 When each of the aryl groups comprises two or more rings, the two or more rings can fused together.

[0848] As used in this article, the term "C1-C" 60 "Heteroaryl" refers to a monovalent group having a heterocyclic aromatic system having 1 to 60 carbon atoms and further including at least one heteroatom as a cyclizing atom in addition to carbon atoms. The term "C1-C" is used herein. 60 "Hypo-heteroaryl" refers to a divalent group having a heterocyclic aromatic system with 1 to 60 carbon atoms, and further including at least one heteroatom as a cyclic atom in addition to carbon atoms. C1-C 60 Non-limiting examples of heteroaryl groups include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, benzo[a]quinolinyl, isoquinolinyl, benzo[a]isoquinolinyl, quinoxalinyl, benzo[a]quinoxalinyl, quinazolinyl, benzo[a]quinazolinyl, cenolinyl, phenanthrolinel, phthalazinyl, and naphthidyl. When C1-C 60 heteroaryl and C1-C 60 When each heteroaryl group comprises two or more rings, the two or more rings can fused together.

[0849] As used herein, the term "monovalent nonaromatic fused polycyclic group" refers to a monovalent group having two or more rings fused together, with only carbon atoms (e.g., 8 to 60 carbon atoms) as cyclic atoms, and which, if considered collectively, has no aromaticity in its molecular structure. Non-limiting examples of monovalent nonaromatic fused polycyclic groups include indenyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, indo[a]phenanthryl, and indo[a]anthrayl. As used herein, the term "divalent nonaromatic fused polycyclic group" refers to a divalent group having substantially the same structure as a monovalent nonaromatic fused polycyclic group.

[0850] As used herein, the term “monovalent nonaromatic fused heterocyclic group” refers to a monovalent group having two or more rings fused together, further including at least one heteroatom as a cyclic atom in addition to carbon atoms (e.g., 1 to 60 carbon atoms), and having no aromaticity in its molecular structure if (e.g., when) taken into account in general. Non-limiting examples of monovalent non-aromatic fused heteropolycyclic groups include pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzothiophene, dibenzofuranyl, azacarbazole, azafluorenyl, azadibenzothiophene, azadibenzothiophene, azadibenzofuranyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, isothiazolyl, oxadiazolyl, thiazolyl, thiazolyl Azolyl, benzopyrazolyl, benzoimidazolyl, benzooxazolyl, benzothiazolyl, benzooxadiazolyl, benzothiadiazolyl, imidazopyridyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, indolecarbazolyl, indolocarbazolyl, benzofuranocarbazolyl, benzothiophenocarbazolyl, benzothiophenocarbazolyl, benzoindolocarbazolyl, benzocarbazolyl, benzonaphthiophenyl, benzonaphthiophenyl, benzofuranodibenzofuranyl, benzofuranodibenzothiophenyl, and benzothiophenodibenzothiophenyl. As used herein, the term "divalent nonaromatic fused heteropolycyclic group" refers to a divalent group having substantially the same structure as a monovalent nonaromatic fused heteropolycyclic group.

[0851] As used in this article, the term "C6-C" 60 "Aryloxy" indicator - OA 102 (where A) 102 For C6-C 60 Aryl), and as used herein by the term "C6-C" 60 "Aromatic thiol" indicator - SA 103 (where A) 103 For C6-C 60 Aryl).

[0852] As used in this article, the term "C7-C" 60 "Aryl" indicator - A 104 A 105 (where A) 104 For C1-C 54 Alkylene, and A 105 For C6-C 59 Aryl), and as used herein by the term "C2-C 60 "Heteroaryl" indicator - A 106 A 107 (where A) 106 For C1-C 59 Alkylene, and A 107 For C1-C 59 (Miscellaneous aromatic compounds).

[0853] As used in this article, the term "C3-C" 60 "Carbocyclic group" includes C3-C 50 carbonyl group, C3-C 40 carbonyl group, C3-C 30 carbonyl group, C3-C 20 carbonyl group or C3-C 10 carbon cyclo group;

[0854] The term "C1-C" 60 "Heterocyclic groups" include C1-C 50 Heterocyclic groups, C1-C 40 Heterocyclic groups, C1-C 30 Heterocyclic groups, C1-C 20 Heterocyclic groups or C1-C 10 Heterocyclic groups;

[0855] The term "C1-C" 60 "alkyl" includes C1-C 50 Alkyl, C1-C 30 Alkyl, C1-C 20 Alkyl or C1-C 10 alkyl;

[0856] The term "C2-C" 60 "Alkenyl" includes C2-C 30 alkenyl, C2-C 20 alkenyl or C2-C 10 alkenyl;

[0857] The term "C2-C" 60 "Alkyne group" includes C2-C 30 alkynyl group, C2-C 20 alkynyl or C2-C 10 alkynyl group;

[0858] The term "C1-C"60 "Alkoxy" includes C1-C 30 Alkoxy, C1-C 20 Alkoxy or C1-C 10 Alkoxy;

[0859] The term "C6-C" 60 "Aryl" includes C6-C 50 Aryl, C6-C 40 Aryl, C6-C 30 Aryl, C6-C 20 Aryl or C6-C 15 Aryl;

[0860] The term "C1-C" 60 "Heteroary aryl" includes C1-C 50 heteroaryl, C1-C 40 heteroaryl, C1-C 30 heteroaryl, C1-C 20 heteroaryl or C1-C 10 Mixed aromatics;

[0861] "Monovalent non-aromatic fused polycyclic groups" include C8-C 60 Monovalent non-aromatic fused polycyclic groups, C8-C 50 Monovalent non-aromatic fused polycyclic groups, C8-C 40 Monovalent non-aromatic fused polycyclic groups, C8-C 30 Monovalent non-aromatic fused polycyclic groups or C8-C 20 Monovalent non-aromatic fused polycyclic groups;

[0862] The term "monovalent non-aromatic fused heterocyclic group" includes C1-C 60 Monovalent non-aromatic fused heterocyclic groups, C1-C 50 Monovalent non-aromatic fused heterocyclic groups, C1-C 40 Monovalent non-aromatic fused heterocyclic groups, C1-C 30 Monovalent non-aromatic fused heterocyclic groups or C1-C 20 Monovalent non-aromatic fused heterocyclic groups;

[0863] The term "C6-C" 60 "Aryloxy groups" include C6-C 50 Aryloxy group, C6-C 40 Aryloxy group, C6-C 30 Aryloxy group, C6-C 20 aryloxy or C6-C 15 aryloxy;

[0864] The term "C6-C" 60 "Arylthio" includes C6-C 50Arylthio, C6-C 40 Arylthio, C6-C 30 Arylthio, C6-C 20 Aryl thiols or C6-C 15 Arylthio;

[0865] The term "C7-C" 60 "Aryl" includes C7-C 50 Aryl group, C7-C 40 Aryl group, C7-C 30 Aryl group, C7-C 20 Aryl or C7-C 15 Aryl alkyl groups; and

[0866] The term "C2-C" 60 "Heteroarylene" includes C2-C 50 Heteroaryl, C2-C 40 Heteroaryl, C2-C 30 Heteroaryl, C2-C 20 Heteroaryl or C2-C 15 Heteroalkyl groups.

[0867] As used in this article, the term "R" 10a "Can be:

[0868] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano or nitro;

[0869] Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkoxy groups: 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, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -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;

[0870] Each of the following C3-Cs that are not substituted or are substituted by: 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: 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 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -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

[0871] -O(Q 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -P(Q) 31 (Q) 32 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ).

[0872] As used in this article, Q1 to Q3, Q 11 To Q 13 Q21 To Q 23 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 Aryl alkyl group; or C2-C 60 Heteroalkyl groups.

[0873] 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.

[0874] As used herein, the term "transition metals" includes hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), and / or gold (Au), etc.

[0875] As used herein, the term "Ph" refers to phenyl, "Me" refers to methyl, "Et" refers to ethyl, and "tert-Bu" or "Bu" refers to ethyl. t "Refers to tert-butyl, and as used herein, the term "OMe" refers to methyl methacrylate (MMA).

[0876] As used herein, the term "biphenyl" refers to a phenyl group that has been substituted with a phenyl group. For example, "biphenyl" can be a phenyl group having a C6-C2 configuration. 60 Aryl groups are substituted phenyl groups.

[0877] As used herein, the term "terphenyl" refers to a phenyl group substituted with a biphenyl group. For example, "terphenyl" is a phenyl group having a C6-C substituted biphenyl group. 60 Aryl-substituted C6-C 60 Aryl groups are substituted phenyl groups.

[0878] Unless otherwise specified, as used herein, *, *', *” and *”' each refer to the binding site of the adjacent atom in the corresponding formula or part.

[0879] 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 in an orthogonal coordinate system described above. 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.

[0880] In this specification, "integers selected from 0 to 20" refers to integers selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20. The above description of numerical ranges also applies to any other numerical ranges appearing in this specification, such as integers selected from 0 and 1, integers selected from 0 to 2, integers selected from 0 to 3, integers selected from 0 to 4, integers selected from 0 to 5, integers selected from 0 to 6, integers selected from 0 to 7, integers selected from 0 to 8, integers selected from 0 to 9, integers selected from 0 to 10, integers selected from 0 to 11, integers selected from 0 to 12, integers selected from 0 to 13, integers selected from 0 to 14, integers selected from 0 to 15, integers selected from 0 to 16, integers selected from 0 to 17, integers selected from 0 to 18, and integers selected from 0 to 19, etc.

[0881] In the following description, organometallic compounds according to one or more embodiments and light-emitting devices according to one or more embodiments will be described in more detail with reference to the following synthesis examples and embodiments. The phrase "using B instead of A" used in the description of the synthesis examples means using substantially the same molar equivalent of B instead of A.

[0882] Example

[0883] Synthesis Example 1: Synthesis of Compound 1

[0884]

[0885] Preparation Example 1: Synthesis of Intermediate 1-1

[0886] 5-Bromobenzo[d]oxazol-2(3H)-one (10.0 g, 0.047 mol), 2-bromo-4-(tert-butyl)pyridine (9.0 g, 0.042 mol), copper iodide (I) (2.22 g, 0.012 mol), 1-methyl-1H-imidazolium (3.45 g, 0.042 mol), and lithium tert-butoxide (5.61 g, 0.07 mol) were added to 150 mL of anhydrous toluene, and the mixture was heated under reflux for 12 hours in an inert atmosphere. The reaction product was washed with ethyl acetate, H2O, and NH4OH, and the organic layer was obtained by extraction with CH2Cl2. The filtrate was purified through a silica filter and the solvent was removed under reduced pressure to obtain 11.9 g of intermediate 1-1 (yield: 73.4%).

[0887] Preparation Example 2: Synthesis of Intermediates 1-2

[0888] Intermediate 1-1 (10 g, 0.029 mol), pyridinecarboxylic acid (1.77 g, 0.014 mol), copper iodide (I) (1.1 g, 0.006 mol), and tripotassium phosphate (12.23 g, 0.058 mol) were added to 150 mL of anhydrous dimethyl sulfoxide (DMSO) and dissolved therein. The container containing the mixture was then filled with an inert gas. 3-Chlorophenol (4.07 g, 0.032 mol) was added, and the mixture was heated under reflux at 145 °C for 18 hours. After the reaction was complete, the reaction product was cooled, and H₂O was added to it to produce a precipitate. The precipitate was filtered and dissolved in CH₂Cl₂, the resulting organic layer was washed with brine, and MgSO₄ was added to dehydrate the organic layer. The resulting product was concentrated under reduced pressure and purified by column chromatography using CH2Cl2 and hexane in a volume ratio of 2:1 as eluent to obtain 9.12 g of intermediate 1-2 as a white solid (yield: 80%).

[0889] Preparation Example 3: Synthesis of Intermediates 1-3

[0890] Intermediate 1-2 (9 g, 0.023 mol), N1-([1,1':3',1"-terphenyl]-2'-yl)phenyl-1,2-diamine hydrochloride (8.5 g, 0.023 mol), [PdCl(C3H5)]2 (0.25 g, 0.7 mmol), di-tert-butyl(1-methyl-2,2-diphenylcyclopropyl)phosphine (0.96 g, 0.003 mol), and sodium tert-butoxide (7.67 g, 0.08 mol) were added to 180 mL of anhydrous toluene and dissolved therein. The container containing the mixture was filled with inert gas. The mixture was then heated under reflux in an inert gas atmosphere for 18 hours. After removing the solvent under reduced pressure, the resulting product was purified by column chromatography using CH2Cl2 and hexane in a volume ratio of 4:1 as eluent to obtain 8.43 g of intermediate 1-3 as a white solid (yield: 53%).

[0891] Preparation Example 4: Synthesis of Intermediates 1-4

[0892] Intermediate 1-3 (8 g, 0.012 mol) was added to 100 mL of triethoxymethane and dissolved therein, and HCl (0.5 g, 0.014 mol) was added to it. The mixture was then reacted at 80 °C for 12 hours. The solvent was removed from the resulting product under reduced pressure to obtain 6.9 g of intermediate 1-4 (yield: 81%).

[0893] Preparation Example 5: Synthesis of Compound 1

[0894] Intermediates 1-4 (6.0 g, 0.008 mol) and silver oxide (I,III) (0.94 g, 0.004 mol) were added to 100 mL of 1,2-dichloroethane and dissolved therein. The mixture was reacted at room temperature for 12 hours. After removing the solvent under reduced pressure, 60 mL of 1,2-dichlorobenzene and dichloro(1,5-cyclooctadiene)platinum(II) (Pt(COD)Cl2) (3.0 g, 0.008 mol) were added to the reaction product, and the mixture was heated under reflux for 48 hours. After removing the solvent under reduced pressure, the resulting product was purified by column chromatography using CH2Cl2 and n-hexane in a volume ratio of 2:1 to finally obtain 4.58 g of compound 1 (yield: 63%).

[0895] Synthesis Example 2: Synthesis of Compound 2

[0896] Compound 2 (5.25 g, yield: 72.5%) was synthesized in essentially the same manner as in the synthesis of compound 1, except that 5-bromobenzo[d]oxazol-2(3H)-thione was used instead of 5-bromobenzo[d]oxazol-2(3H)-one in the synthesis of intermediate 1-1.

[0897] Synthesis Example 3: Synthesis of Compound 3

[0898] Compound 3 (4.28 g, yield: 59%) was synthesized in essentially the same manner as in the synthesis of compound 1, except that 5-bromobenzo[d]thiazol-2(3H)-one was used instead of 5-bromobenzo[d]oxazol-2(3H)-one in the synthesis of intermediate 1-1.

[0899] Synthesis Example 4: Synthesis of Compound 4

[0900] Compound 4 (5.05 g, yield: 70%) was synthesized in essentially the same manner as in the synthesis of compound 1, except that 5-bromobenzo[d]thiazol-2(3H)-thione was used instead of 5-bromobenzo[d]oxazol-2(3H)-one in the synthesis of intermediate 1-1.

[0901] Proton nuclear magnetic resonance spectroscopy of each of the compounds synthesized according to the synthesis example ( 1 Data from 1H NMR and mass spectrometry / fast atomic bombardment (MS / FAB) are shown in Table 1. By referring to the synthetic routes and starting materials, those skilled in the art can easily identify synthetic methods for other compounds besides those synthesized in the synthetic examples.

[0902] Table 1

[0903]

[0904]

[0905] Evaluation Example 1

[0906] For each of compounds 1 through 4, the HOMO energy level (E) was evaluated using density functional theory (DFT) methods following the Gaussian 09 procedure at the B3LYP / 6-311G(d,p) level. HOMO ), LUMO level (E LUMO ), HOMO-LUMO band gap energy (E g ), T1 energy level (nm) and triplet metal-ligand charge-transfer state ( 3 The presence rate (%) of MLCT is shown in Table 2.

[0907] Table 2

[0908]

[0909] Example 1

[0910] As the anode, a 15Ω / cm anode is formed on it. 2 The glass substrate (Corning's product) of the thick ITO electrode is cut to a size of 50mm × 50mm × 0.7mm, ultrasonically treated with isopropanol and (then) pure water for 5 minutes each, cleaned by irradiating it with ultraviolet light and exposing it to ozone for 30 minutes, and then mounted on a vacuum deposition equipment.

[0911] The compound HT3 was vacuum deposited onto the anode to form a structure with... A hole transport layer of a certain thickness was formed, and compound HT40 was vacuum deposited on the hole transport layer to form a hole transport layer with a certain thickness. A launch auxiliary layer of a certain thickness.

[0912] Compounds H129, H130, and 1 (as the first emitter) were vacuum-deposited onto the emission-assisted layer in a weight ratio of 45:45:10 to form a layer with... The thickness of the emission layer.

[0913] Compound ET37 was vacuum deposited onto the emitter layer to form a structure with... A buffer layer of a certain thickness was formed, and compounds ET46 and Liq were vacuum-deposited onto the buffer layer in a 5:5 weight ratio to form a buffer layer with [missing information]. An electron transport layer of a certain thickness was then formed. Subsequently, Yb was vacuum deposited onto the electron transport layer to form an electron transport layer with [missing information]. An electron-injected layer of a certain thickness was formed, and Ag and Mg were vacuum-deposited on the electron-injected layer at a weight ratio of 5:5 to form a layer with... A cathode of a certain thickness is used to complete the manufacturing of the light-emitting device.

[0914]

[0915] Examples 2 to 4, and Comparative Examples 1 and 2

[0916] The light-emitting devices were each manufactured in essentially the same manner as in Example 1, except that the compounds used to form the emitting layer were changed, as shown in Table 2.

[0917] Evaluation Example 2

[0918] To evaluate the characteristics of each of the light-emitting devices manufactured according to Examples 1 to 4 and Comparative Examples 1 and 2, a 1000 cd / m² light-emitting device was measured. 2 The driving voltage (V), luminous efficiency (cd / A) (e.g., current efficiency), and maximum emission wavelength (nm) at the specified brightness were measured, and the results are shown in Table 3. The driving voltage of the light-emitting device was measured using a source meter (Keithley Instrument, 2400 series), and the current efficiency of the light-emitting device was measured using a CS-2000 luminance meter (Konica Minolta). Additionally, to evaluate the device lifetime, the relative lifetime (T) was calculated by comparing the time taken for the light-emitting device in Comparative Example 1 to reach 95% of its initial brightness with the time measured in each of Examples 1 to 4 and Comparative Example 2. 95 ,%)value.

[0919] Table 3

[0920]

[0921]

[0922] Referring to Table 3, it was confirmed that, compared with the light-emitting devices according to Comparative Examples 1 and 2, the light-emitting devices according to Examples 1 to 4 each have superior or suitable characteristics in terms of driving voltage, luminous efficiency and device lifespan while emitting blue or green light.

[0923] According to one or more embodiments, by using organometallic compounds represented by Formula 1, it is possible to manufacture light-emitting devices with reduced driving voltage, improved luminous efficiency, and increased lifespan, as well as high-quality electronic devices and electronic equipment including light-emitting devices.

[0924] For example, Evaluation Example 2 describes the performance characteristics of the light-emitting devices manufactured according to Examples 1 to 4, and Comparative Examples 1 and 2. Key parameters measured include driving voltage, luminous efficiency, maximum emission wavelength, and lifetime (T). 95The results summarized in Table 3 show that the light-emitting devices of Examples 1 to 4 exhibit superior performance in terms of driving voltage, luminous efficiency, and lifetime compared to Comparative Examples 1 and 2. The advantages of using the organometallic compound represented by Formula 1 in the light-emitting device include reduced driving voltage, improved luminous efficiency, and increased lifetime. These improvements contribute to the development of high-quality electronic devices and electronic equipment incorporating these advanced light-emitting devices.

[0925] In this disclosure, the terms “comprise(s) / comprising”, “include(s) / including”, or “have / has / having” will be understood to indicate the presence of a feature, integer, step, operation, element, and / or component of the description, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0926] In the context of this application, and unless otherwise specified, the terms “use,” “using,” and “used” are to be regarded as synonymous with the terms “utilize,” “utilizing,” and “utilized,” respectively.

[0927] When it is mentioned that a component (such as a layer, film, zone, or plate) is placed "on" another component (such as a layer, film, zone, or plate), it will be understood that it may be directly on the other component (such as a layer, film, zone, or plate), or other components may be inserted therein. In some embodiments, "directly on" can mean that there is no other layer, film, zone, plate, etc. between the layer, film, zone, plate, etc. and another part. For example, "directly on" can mean that two layers or two components are provided without the use of additional components (such as adhesive components) between them.

[0928] In this disclosure, although the terms “first,” “second,” etc., may be used herein to describe one or more elements, components, areas, and / or layers, such elements, components, areas, and / or layers should not be limited by these terms. These terms are used only to distinguish one component from another.

[0929] As used herein, the singular forms “a,” “an,” “one,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when describing embodiments of this disclosure, the word “may” refers to “one or more embodiments of this disclosure.”

[0930] As used herein, the terms “substantially,” “about,” or similar terms are used as approximations and not as terms of degree, and are intended to describe the inherent biases of measured or calculated values ​​that would be recognized by one of ordinary skill in the art. As used herein, “about” includes stated values ​​and means within an acceptable range of deviation for a particular value, determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of that particular quantity (i.e., the limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0931] Any numerical range set forth herein is intended to include all subranges of the same numerical precision falling within the set forth range. For example, the range “1.0 to 10.0” is intended to include all subranges between the stated minimum value of 1.0 and the stated maximum value of 10.0 (and inclusive), that is, all subranges having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, for example, 2.4 to 7.6. Any maximum numerical limit set forth herein is intended to include all lower numerical limits falling within it, and any minimum numerical limit set forth in this disclosure is intended to include all higher numerical limits falling within it. Accordingly, the applicant reserves the right to modify this disclosure (including the claims) to expressly set forth any subranges falling within the range expressly set forth herein.

[0932] The light-emitting devices, light-emitting apparatuses, display devices, electronic devices, electronic equipment, means of manufacture thereof, or any other related devices or components described herein according to embodiments of this disclosure can be implemented using any suitable hardware, firmware (e.g., application-specific integrated circuits), software, or a combination of software, firmware, and hardware. For example, various components of the device may be formed on an integrated circuit (IC) chip or on a separate IC chip. Furthermore, various components of the device may be implemented on a flexible printed circuit film, a tape package, or a printed circuit board (PCB), or formed on a substrate. Furthermore, various components of the device may be processes or threads that run on one or more processors in one or more computing devices, execute computer program instructions, and interact with other system components to perform the various functions described herein. The computer program instructions are stored in memory, which may be implemented using standard memory devices (e.g., random access memory (RAM) in the computing device). The computer program instructions may also be stored in other non-transitory computer-readable media (e.g., optical disc read-only memory (CD-ROM) or flash memory drives). Furthermore, those skilled in the art will recognize that, without departing from the scope of the embodiments of this disclosure, the functions of various computing devices may be combined or integrated into a single computing device, or the functions of a dedicated computing device may be distributed across one or more other computing devices.

[0933] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and not for limiting purposes. The description of features or aspects of each embodiment should generally be considered in light of other similar features or aspects that may be used in one or more embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that one or more suitable changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims and their equivalents.

Claims

1. A light-emitting device, comprising: First electrode; A second electrode opposite to the first electrode; An interlayer comprising an emission layer between the first electrode and the second electrode; as well as Organometallic compounds represented by Formula 1: Formula 1 In Equation 1, M represents platinum, palladium, copper, silver, gold, rhodium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium, or thulium. X1 to X4 are each independently C or N. Rings CY1 to CY4 are each independently C5-C 30 Carbocyclic or C1-C 30 Heterocyclic group, L1 to L3 are each independently a single bond, *-C(R) 1a (R) 1b )-*'、*-C(R 1a )=*'、*=C(R 1a )-*'、*-C(R 1a )=C(R 1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R 1a )-*'、*-N(R 1a )-*'、*-O-*'、*-P(R 1a )-*'、*-Al(R 1a )-*、*-Si(R 1a (R) 1b )-*'、*-P(=O)(R 1a )-*', *-S-*', *-S(=O)-*', *-S(=O)2-*' or *-Ge(R 1a (R) 1b )-*', * and *' each indicate the binding site with the adjacent atom, n1 to n3 are each an independent integer selected from 1 to 10. Z 31 For N or B, Z 32 For O, S or Se, Z 33 is O, S, B(R'), N(R'), C(R')(R") or Si(R')(R"), R1 to R4, R 1a R 1b R' and R" are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 60 Alkyl thioyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -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), a1 to a4 are each an independent integer selected from 1 to 20. Selected from R1 with quantity a1, R2 with quantity a2, R3 with quantity a3, R4 with quantity a4, R 1a R 1b Two or more adjacent R' and R' are optionally bonded together to form an unsubstituted or at least one R' 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group, R 10a for: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano or nitro; Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy groups: 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, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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; Each of the following C3-Cs that are not substituted or are substituted: 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-P(Q 31 )(Q 32 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ) and Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 Aryl alkyl group; or C2-C 60 Heteroaryl alkyl groups.

2. The light-emitting device according to claim 1, wherein... The emitter layer includes a host and a dopant, and The dopant includes the organometallic compound represented by Formula 1.

3. The light-emitting device according to claim 1, further comprising: Including nitrogen-containing C1-C atoms lacking at least one π electron 60 A second compound with a heterocyclic group, a third compound including a group represented by Formula 3, a fourth compound emitting delayed fluorescence, or any combination thereof, wherein The organometallic compound represented by Formula 1, the second compound, the third compound, and the fourth compound are different from each other: Formula 3 and In Equation 3, CY 71 and CY 72 Each is an independent C3-C rich in π electrons. 60 Cyclic groups or pyridyl groups, X 71 It is a single bond or a linking group including O, S, N, B, C, Si, or any combination thereof, and *Indicates the binding site of the atoms included in the remainder of the third compound, excluding the group represented by Formula 3.

4. The light-emitting device according to claim 3, wherein... The second compound comprises pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or any combination thereof, and The fourth compound is a compound comprising at least one cyclic group containing both boron and nitrogen as cyclic atoms.

5. The light-emitting device according to claim 3, wherein... The emission layer includes: The organometallic compound represented by Formula 1; as well as The second compound, the third compound, the fourth compound, or any combination thereof, and The emitting layer emits blue or green light.

6. An electronic device comprising a light-emitting device according to any one of claims 1 to 5.

7. The electronic device of claim 6, further comprising a thin-film transistor, The thin-film transistor includes a source electrode and a drain electrode, and The first electrode of the 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 device comprising a light-emitting device according to any one of claims 1 to 5.

10. The electronic device according to claim 9, wherein the electronic device is at least one of the following: flat panel display, curved display, computer monitor, medical monitor, television, billboard, indoor light, outdoor light, signal light, head-up display, fully transparent display, partially transparent display, flexible display, rollable display, foldable display, retractable display, laser printer, telephone, portable telephone, tablet PC, tablet computer, personal digital assistant, wearable device, laptop computer, digital camera, camcorder, viewfinder, microdisplay, 3D display, virtual reality display, augmented reality display, vehicle, video wall having multiple displays spliced ​​together, theater screen, stadium screen, phototherapy device, and signboard.

11. An organometallic compound represented by Formula 1: Formula 1 in, In Equation 1, M represents platinum, palladium, copper, silver, gold, rhodium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium, or thulium. X1 to X4 are each independently C or N. Rings CY1 to CY4 are each independently C5-C 30 Carbocyclic or C1-C 30 Heterocyclic group, L1 to L3 are each independently a single bond, *-C(R) 1a (R) 1b )-*'、*-C(R 1a )=*'、*=C(R 1a )-*'、*-C(R 1a )=C(R 1b )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R 1a )-*'、*-N(R 1a )-*'、*-O-*'、*-P(R 1a )-*'、*-Al(R 1a )-*、*-Si(R 1a (R) 1b )-*'、*-P(=O)(R 1a )-*', *-S-*', *-S(=O)-*', *-S(=O)2-*' or *-Ge(R 1a (R) 1b )-*', * and *' each indicate the binding site with the adjacent atom, n1 to n3 are each an independent integer selected from 1 to 10. Z 31 For N or B, Z 32 For O, S or Se, Z 33 is O, S, B(R'), N(R'), C(R')(R”), or Si(R')(R”), R1 to R4, R 1a R 1b R' and R" are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 60 Alkyl thioyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -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), a1 to a4 are each an independent integer selected from 1 to 20. Selected from R1 with quantity a1, R2 with quantity a2, R3 with quantity a3, R4 with quantity a4, R 1a R 1b Two or more adjacent R' and R' are optionally bonded together to form an unsubstituted or at least one R' 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group, R 10a for: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano or nitro; Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy groups: 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, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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; Each of the following C3-Cs that are not substituted or are substituted: 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-P(Q 31 )(Q 32 )、-S(=O)2(Q 31 )或-P(=O)(Q 31 )(Q 32 ), and Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 Aryl alkyl group; or C2-C 60 Heteroaryl alkyl groups.

12. The organometallic compound according to claim 11, wherein M is platinum, palladium or gold.

13. The organometallic compound according to claim 11, wherein... X1 is C, and The bond between X1 and M is a coordinate bond.

14. The organometallic compound according to claim 11, wherein... X1, X2, and X3 are each C, and X4 is N. The bonds between X1 and M and between X4 and M are each coordinate bonds, and The bond between X2 and M and the bond between X3 and M are both covalent bonds.

15. The organometallic compound according to claim 11, wherein... Rings CY1 to CY4 are each independent of the following: Phenyl, naphthyl, anthraceneyl, phenanthrene, triphenylene, pyrene, 1,2-benzophenanthrene, cyclopentadienyl, furanyl, thiopheneyl, thiopheneyl, indoleyl, fluoreneyl, indoleyl, carbazoleyl, benzofuranyl, dibenzofuranyl, benzothiopheneyl, dibenzothiopheneyl, benzothiopheneyl, dibenzobenzofuranyl, naphthobenzofuranyl, naphthobenzothiopheneyl, benzocarbazoleyl, benzofluoreneyl, naphthobenzothiopheneyl, dinaphthofuranyl, dinaphthothiopheneyl Fenyl, dibenzocarbazoyl, dibenzofluorenyl, dinaphthothiopyrrolyl, azafluorenyl, azacarbazoyl, azadibenzofuranyl, azadibenzothiopheneyl, azadibenzothiopyrrolyl, azanaphthobenzofuranyl, azanaphthobenzothiopheneyl, azabenzazocarbazoyl, azabenzafluorenyl, azanaphthobenzothiopyrrolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, phenanthrene Linolyl, pyrrolyl, pyrazolyl, imidazoleyl, triazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, naphthizolyl, imidazole-pyridyl, azadinaphthofuranyl, azadinaphthothiophenyl, azadibenzocarbazolyl, azadibenzofluorenyl, azadinaphthothiolyl, benzoxazolyl, benzothizolyl, benzoxazolyl, benzothizolyl, benzoxadiazolyl, benzothizolyl, dibenzoxoxazolyl Silylcyclohexyl, dibenzothiosilylcyclohexyl, dibenzodihydroazinosilylcyclohexyl, dibenzodihydrodisilylcyclohexyl, dibenzodihydrosilylcyclohexyl, dibenzodioxanecyclohexyl, dibenzooxazinyl, dibenzopyranyl, dibenzodithiocyclohexyl, dibenzothiazinyl, dibenzothiaranyl, dibenzocyclohexadienyl, dibenzodihydropyridinyl or dibenzodihydropyrazinyl.

16. The organometallic compound according to claim 11, wherein... L1 and L3 are each single bonds, and L2 is either *-O-*' or *-S-*', and n2 is 1.

17. The organometallic compound according to claim 11, wherein... R1 to R4, R' and R” are each independent of: Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy; Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof; Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrroloyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindoleyl, indoleyl, indazoleyl, purinel, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthrolyl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl Benzoxazolyl, Benzisoxazolyl, Triazolyl, Tetrazolyl, Oxadiazolyl, Triazinyl, Dibenzofuranyl, Dibenzothiophenyl, Benzcarbazoleyl, Dibenzocarbazoleyl, Imidazolopyridyl, Imidazolopyrimidinyl, Azacarbazoleyl, Azadibenzofuranyl, Azadibenzothiophenyl, Azafluorenyl or Azadibenzothiophenyl: Deuterium, -F, -Cl, -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, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, cyclolinyl, carbazole, phenanthryl, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, 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) 32 ) or any combination thereof; or -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 Q1 to Q3 and Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; or each of the following unsubstituted or substituted groups: deuterium, -F, cyano, C1-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

18. The organometallic compound according to claim 11, wherein... R1 to R4, R' and R” are each independent of: Hydrogen, deuterium, -F, Cl-C 20 Alkyl or C1-C 20 Alkoxy; Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkoxy groups: deuterium, -F, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof; Each of the following unsubstituted or substituted cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthracene, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cyclolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl or dibenzothiophenyl: deuterium, -F, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, (C1-C) 10 Alkyl)phenyl, naphthyl, fluorenyl, phenanthryl, anthraceneyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxalinyl, quinazolinyl, cyclolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, -O(Q 31 -S(Q) 31 ), -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 ) or any combination thereof; or -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3) or -N(Q1)(Q2), and Q1 to Q3 and Q 31 To Q 33 Each independently is: hydrogen; deuterium; -F; or each unsubstituted or substituted with deuterium, -F, or Cl-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

19. The organometallic compound according to claim 11, wherein, In Equation 1, Depend on The group represented is any group selected from formulas CY1(1) to CY1(11). Depend on The group represented is any group selected from formulas CY2(1) to CY2(13). Depend on The group represented is any group selected from formulas CY3(1) to CY3(10), and Depend on The group represented is any group selected from formulas CY4(1) to CY4(29): In equations CY1(1) to CY1(11), CY2(1) to CY2(13), CY3(1) to CY3(10), and CY4(1) to CY4(29), Z 31 Z 32 and Z 33 Each is the same as that defined in Equation 1. T 21 is B(Y 21 ), C(Y 21 )(Y 22 ), N(Y 21 ), O, S or Si(Y 21 )(Y 22 ), T 22 is C(Y 21 ), N or Si(Y 21 ), T 31 is B(Y 31 ), C(Y 31 )(Y 32 ), N(Y 31 ), O, S or Si(Y 31 )(Y 32 ), R 11 To R 17 Each of them has the same limitation on R1 as in Equation 1. R 21 To R 26 Y 21 and Y 22 Each of them has the same constraint on R2 as in Equation 1. R 31 To R 34 Y 31 and Y 32 Each of them has the same limitation on R3 as in Equation 1. R 41 To R 47 Each of them has the same limitation on R4 as in Equation 1. *Indicates the binding site with M in Formula 1. *' indicates the binding site with L1 in Formula 1. * indicates the binding site with L2 in Formula 1, and *”' indicates the binding site with L3 in Formula 1.

20. The organometallic compound according to claim 11, wherein the organometallic compound represented by formula 1 is a compound represented by formula 1-1: Equation 1-1 and in, In Equation 1-1, M, Z 31 Z 32 and Z 33 Each is the same as that defined in Equation 1. L2 is either *-O-*' or *-S-*'. X 12 For C(R) 12 ) or N, X 13 For C(R) 13 ) or N, X 14 For C(R) 14 ) or N, and X 15 For C(R) 15 ) or N, X 21 For C(R) 21 ) or N, X 22 For C(R) 22 ) or N, and X 23 For C(R) 23 ) or N, X 31 For C(R) 31 ) or N, and X 32 For C(R) 32 ) or N, X 41 For C(R) 41 ) or N, X 42 For C(R) 42 ) or N, X 43 For C(R) 43 ) or N, and X 44 For C(R) 44 ) or N, R 11 To R 15 Each of them has the same limitation on R1 as in Equation 1. R 21 To R 23 Each of them has the same constraint on R2 as in Equation 1. R 31 and R 32 Each of them has the same limitation on R3 as in Equation 1. R 41 To R 44 Each of them is the same as the constraint on R4 in Equation 1, and Selected from R 11 To R 15 R 21 To R 23 R 31 R 32 and R 41 To R 44 Two or more of them are optionally bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

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