Organometallic compound, light-emitting device, electronic apparatus, and electronic apparatus

Abstract

Embodiments provide an organometallic compound, a light emitting device including the organometallic compound, an electronic device including the light emitting device, and an electronic equipment including the light emitting device. The light emitting device includes a first electrode, a second electrode facing the first electrode, an intermediate layer between the first electrode and the second electrode and including an emission layer, and an organometallic compound. Organometallic compound represented by Formula 1, which is explained in the description: [Formula 1] # imgabs0 #

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0108264 filed in the Korean Intellectual Property Office on August 18, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The embodiment relates to an organometallic compound, a light emitting device including the organometallic compound, an electronic device including the light emitting device, and electronic equipment. Background Art

[0003] Among light emitting devices, self-emitting devices have wide viewing angles, high contrast, short response times, and excellent characteristics in terms of brightness, driving voltage, and response speed.

[0004] In the light-emitting device, the first electrode is located on the substrate, and the hole transport region, the emission layer, the electron transport region and the second electrode are arranged on the first electrode. The holes provided from the first electrode move toward the emission layer through the hole transport region, and the electrons provided from the second electrode move toward the emission layer through the electron transport region. Carriers (such as holes and electrons) recombine in the emission layer to generate excitons. These excitons transition from an excited state to a ground state, thereby generating light.

[0005] It will be understood that this background section is intended, in part, to provide a useful background for understanding the technology. However, this background section may also include concepts, ideas or insights that are not part of what was known or understood by those skilled in the relevant art prior to the corresponding effective filing date of the subject matter disclosed herein. Summary of the invention

[0006] Embodiments include an organometallic compound, a light emitting device including the organometallic compound, an electronic device including the light emitting device, and electronic equipment.

[0007] Additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosed embodiments.

[0008] The embodiment provides a light emitting device, which may include: a first electrode; a second electrode facing the first electrode; an intermediate layer between the first electrode and the second electrode and including an emission layer; and an organic metal compound represented by Formula 1:

[0009] [Formula 1]

[0010]

[0011] In formula 1,

[0012] T 1It can be sp 3 Elements of hybrid orbitals,

[0013] M 1 and M 2 each independently may 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),

[0014] X 11 To X 14 and X 21 To X 24 can all independently be C or N,

[0015] Cyclo 11 To Ring CY 14 and CY 21 To Ring CY 24 can be independently C 5 -C 30 Carbocyclic or C 1 -C 30 Heterocyclic group,

[0016] L 11 To L 13 and L 21 To L 23 can be 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 * and *' may both indicate the binding site with the adjacent atom,

[0017] n11 to n13 and n21 to n23 may each independently be an integer from 0 to 5,

[0018] When n11 is 0, there may be no *-(L 11 ) n11 -*', when n12 is 0, it may not exist *-(L 12 ) n12 -*', when n13 is 0, it may not exist *-(L 13 ) n13 -*', when n21 is 0, it may not exist *-(L 21 ) n21 -*', when n22 is 0, it may not exist *-(L 22 ) n22 -*', when n23 is 0, it may not exist *-(L 23 ) n23 -*',

[0019] R 11 To R 14 , R 21 To R 24 , R 1a and R 1b can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkylthio, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C 6-C 60 Arylthio, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0020] a11 to a14 and a21 to a24 may each independently be an integer of 1 to 20,

[0021] R with quantity a11 11 , the number of R is a12 12 , the number of R is a13 13 , the number of R is a14 14 , the number of R is a21 21 , the number of R is a22 22 , the number of R is a23 23 , the number of R is a24 24 , R 1a and R 1b Two or more adjacent groups may optionally be combined with each other to form an unsubstituted or substituted group having at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0022] R 10a It can be:

[0023] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0024] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60Arylthio, C 7 -C 60 Arylalkyl, C 2 -C 60 Heteroarylalkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy;

[0025] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl, C 2 -C 60 Heteroarylalkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O) 2 (Q 21)、-P(=O)(Q 21 )(Q 22 ) or any combination thereof 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 heteroarylalkyl; or

[0026] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ),and

[0027] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 7 -C 60Arylalkyl or C 2 -C 60 Heteroarylalkyl.

[0028] In an embodiment, the emission layer may include a host and a dopant, and the dopant may include an organic metal compound.

[0029] In an embodiment, the light emitting device may further include a second compound, a third compound, a fourth compound, or any combination thereof, wherein the second compound includes at least one π-electron-poor nitrogen-containing C 1 -C 60 The third compound includes a group represented by Formula 3, and the fourth compound is a delayed fluorescence compound, wherein:

[0030] The organometallic compound, the second compound, the third compound, and the fourth compound may be different from each other, and Formula 3 is explained below.

[0031] In an embodiment, the second compound may include a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or any combination thereof, and

[0032] The fourth compound may be a compound including at least one ring group including boron (B) and nitrogen (N) as ring-constituting atoms.

[0033] In an embodiment, the emission layer may include the second compound, the third compound, the fourth compound, or any combination thereof, and the organic metal compound; and the emission layer may emit blue light.

[0034] According to an embodiment, an electronic device may include the light emitting device.

[0035] In an embodiment, the electronic device may further include a thin film transistor, wherein the thin film transistor may include a source electrode and a drain electrode, and the first electrode of the light emitting device may be electrically connected to at least one of the source electrode and the drain electrode.

[0036] In an embodiment, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof.

[0037] According to an embodiment, electronic equipment may include the light emitting device.

[0038] In embodiments, the electronic equipment may be a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a phone (such as a portable phone), a tablet personal computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a microdisplay, a three-dimensional (3D) display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays stitched together, a theater screen, a stadium screen, a light therapy device, or a sign.

[0039] The embodiment provides an organometallic compound which may be represented by Formula 1 explained herein.

[0040] In an embodiment, T 1 It can be carbon (C), silicon (Si) or germanium (Ge).

[0041] In the embodiment, M 1 and M 2 Each may independently be platinum (Pt), palladium (Pd) or gold (Au).

[0042] In an embodiment, X 11 , X 21 , X 12 , X 22 , X 13 and X 23 Can be C,

[0043] X 14 and X 24 Can be N,

[0044] X 11 With M 1 The key between 14 With M 1 The key between 21 With M 2 The key between and X 24 With M 2 The bonds between can all be coordination bonds, and

[0045] X 12 With M 1 The key between 13 With M 1 The key between 22 With M 2 The key between and X 23 With M 2 The bonds between them can all be covalent bonds.

[0046] In an embodiment, CY 11 To Ring CY 14 and CY 21 To Ring CY 24 can be independently a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a benzo[9,10]phenanthrene group, a pyrene group, group, a cyclopentadiene group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzothioole group, a dibenzothioole group, an azafluorene group, an azacarbazole group, an azadibenzofuran group, an azadibenzothiophene group, an azadibenzothioole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, a benzothiadiazole group, a dibenzooxasilane group, a dibenzothiasilane group, a dibenzodihydroazasilane group, a dibenzodihydrodisilane group, a dibenzodihydrosilane group, a dibenzodioxane group, a dibenzooxathiine group, a dibenzoxazine group, a dibenzopyran group, a dibenzodithiine group, a dibenzothiazine group, a dibenzothiopyran group, a dibenzocyclopentadiene group, a dibenzodihydropyridine group or a dibenzodihydropyrazine group.

[0047] In an embodiment, L 11 , L 13 , L 21 and L 23 can all be single bonds, and

[0048] n12 and n22 can both be 0.

[0049] In an embodiment, R 11 To R 14 and R 21 To R 24 can all independently be:

[0050] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0051] All substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 10 C alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridinyl, pyrimidinyl, or any combination thereof 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0052] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32)、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl or azadibenzothiorolyl; or

[0053] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),and

[0054] Q 1 To Q 3 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0055] In an embodiment, in Formula 1,

[0056] n12 and n22 can both be 0,

[0057] Depend on The moieties represented by may each independently be a moiety represented by one of formula CY1(1) to formula CY1(11),

[0058] Depend on The moieties represented by may each independently be a moiety represented by one of formula CY2(1) to formula CY2(13),

[0059] Depend on The moieties represented by may each independently be a moiety represented by one of formula CY3(1) to formula CY3(25), and

[0060] Depend on The represented parts can each independently be a part represented by one of formulas CY4(1) to CY4(29), wherein formulas CY1(1) to CY1(11), CY2(1) to CY2(13), CY3(1) to CY3(25) and CY4(1) to CY4(29) are explained below.

[0061] In an embodiment, the organometallic compound may be represented by Formula 1-1 explained below.

[0062] In an embodiment, the organometallic compound may be one of Compound 1 to Compound 6 explained below.

[0063] It will be understood that the above embodiments have been described in a generic and illustrative sense only and not for purposes of limitation, and that the disclosure is not limited to the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The above and other aspects and features of the disclosure will become more apparent by describing in detail embodiments of the disclosure with reference to the accompanying drawings, in which:

[0065] Figure 1 is a schematic cross-sectional view of a light emitting device according to an embodiment;

[0066] Figure 2 is a schematic cross-sectional view of an electronic device according to an embodiment;

[0067] Figure 3 is a schematic cross-sectional view of an electronic device according to an embodiment;

[0068] Figure 4 is a schematic perspective view of an electronic device according to an embodiment;

[0069] Figure 5 is a schematic perspective view of the exterior of a vehicle as electronic equipment including a light emitting device according to an embodiment;

[0070] Fig. 6A , Figure 6B and Figure 6C are schematic perspective views of the interior of a vehicle according to an embodiment; and

[0071] Figure 7 and Figure 8 2 and 3 are graphs showing device evaluation results of the light emitting devices according to the embodiments. DETAILED DESCRIPTION

[0072] The disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments are shown. However, the disclosure may be implemented in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the disclosure will be thorough and complete and will fully convey the scope of the disclosure to those skilled in the art.

[0073] In the drawings, for convenience of description and clarity, the size, thickness, ratio and scale of elements may be exaggerated. The same reference numerals and / or the same reference numerals refer to the same elements throughout.

[0074] In the description, it will be understood that when an element (or region, layer, portion, etc.) is referred to as being "on," "connected to," or "coupled to" another element, the element (or region, layer, portion, etc.) may be directly on, directly connected to, or directly coupled to the other element, or one or more intervening elements may be present therebetween. In a similar sense, when an element (or region, layer, portion, etc.) is described as "covering" another element, the element (or region, layer, portion, etc.) may directly cover the other element, or one or more intervening elements may be present therebetween.

[0075] In the description, when an element is "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements. For example, "directly on" may mean that two layers or two elements are disposed without an additional element (such as an adhesive element) between them.

[0076] As used herein, expressions used in the singular such as “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0077] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. For example, "A and / or B" may be understood to mean "A, B, or A and B". The terms "and" and "or" may be used in a conjunctive or disjunctive sense and may be understood to be equivalent to "and / or".

[0078] In the specification and claims, for the purpose of its meaning and understanding, the term "at least one of..." is intended to include the meaning of "at least one selected from the group consisting of..." For example, "at least one of A, B, and C" can be understood to mean only A, only B, only C, or any combination of two or more of A, B, and C (such as ABC, ACC, BC, or CC). When the term "at least one of..." follows a list of elements, it modifies the entire list of elements and does not modify the individual elements in the list.

[0079] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Therefore, without departing from the disclosed teachings, the first element may be referred to as the second element. Similarly, without departing from the scope of the disclosure, the second element may be referred to as the first element.

[0080] For ease of description, spatially relative terms such as "below", "under", "lower (lower part)", "above", "upper (upper part)", etc. may be used herein to describe the relationship between one element or component and another element or component as shown in the drawings. It will be understood that in addition to the orientation depicted in the drawings, the spatially relative terms are intended to cover different orientations of the device in use or operation. For example, in the case of flipping the device shown in the drawings, a device located "below" or "below" another device can be placed "above" the other device. Therefore, the illustrative term "below" can include both lower and upper positions. The device may also be oriented in other directions, and thus the spatially relative terms may be interpreted differently depending on the orientation.

[0081] The terms "about" or "approximately" as used herein include the stated value and mean within an acceptable range of deviation of the stated value as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of the quantity (e.g., limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±20%, ±10%, or ±5% of the stated value.

[0082] It should be understood that the terms "comprises" and their variations, "includes" and their variations, "having" and their variations, etc. are intended to illustrate the presence of stated features, integers, steps, operations, elements, components or their combinations in the disclosure, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components or their combinations.

[0083] Unless otherwise defined or implied herein, all terms (including technical and scientific terms) used have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It will also be understood that, unless clearly defined in the specification, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formalized meaning.

[0084] An embodiment provides a light emitting device, which may include:

[0085] a first electrode;

[0086] a second electrode facing the first electrode;

[0087] an intermediate layer between the first electrode and the second electrode and including an emission layer; and

[0088] An organometallic compound represented by Formula 1:

[0089] [Formula 1]

[0090]

[0091] The description of Formula 1 is the same as described herein.

[0092] In an embodiment, the first electrode of the light emitting device may be an anode,

[0093] The second electrode of the light emitting device may be a cathode,

[0094] The intermediate layer may further include a hole transport region between the first electrode and the emission layer and an electron transport region between the emission layer and the second electrode.

[0095] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof, and

[0096] The electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0097] In an embodiment, the intermediate layer of the light emitting device may include the organic metal compound represented by Formula 1.

[0098] In an embodiment, an emission layer of a light emitting device may include an organic metal compound represented by Formula 1.

[0099] In an embodiment, the emission layer of the light emitting device may include a dopant and a host, and the dopant may include an organic metal compound represented by Formula 1. For example, the organic metal compound may be used as a dopant. In an embodiment, the emission layer may emit blue light. The blue light may have a maximum emission wavelength in the range of, for example, about 430 nm to about 480 nm.

[0100] In an embodiment, 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-containing compound, a silicon-containing compound, or any combination thereof. In an embodiment, the hole blocking layer may contact (eg, directly contact) the emission layer.

[0101] In an embodiment, the light emitting device may further include at least one nitrogen-containing C 1 -C 60 a second compound comprising a heterocyclic group, a third compound comprising a group represented by Formula 3, a fourth compound capable of emitting delayed fluorescence (eg, a delayed fluorescence compound), or any combination thereof, and

[0102] The organometallic compound, the second compound, the third compound and the fourth compound in the light-emitting device may be different from each other:

[0103] [Formula 3]

[0104]

[0105] In formula 3,

[0106] Cyclo 71 and CY 72 can be independently π-electron-rich C 3 -C 60 a cyclic group or a pyridine group,

[0107] X 71 can be: a single bond; or a linking group comprising O, S, N, B, C, Si or any combination thereof, and

[0108] * represents a bonding position with any atom included in the remaining parts other than Formula 3 in the third compound.

[0109] In an embodiment, the organometallic compound may include at least one deuterium atom.

[0110] In an embodiment, the second compound, the third compound, and the fourth compound may each include at least one deuterium atom.

[0111] In an embodiment, the second compound may include at least one silicon atom.

[0112] In an embodiment, the third compound may include at least one silicon atom.

[0113] In an embodiment, in addition to the organometallic compound represented by Formula 1, the light emitting device may further include a second compound and a third compound, wherein at least one of the second compound and the third compound may each independently include at least one deuterium atom, at least one silicon atom, or any combination thereof.

[0114] In an embodiment, in addition to the organometallic compound, the light emitting device (e.g., an emission layer in a light emitting device) may further include a second compound. At least one of the organometallic compound and the second compound may each independently include at least one deuterium atom. In an embodiment, in addition to the organometallic compound and the second compound, the light emitting device (e.g., an emission layer in a light emitting device) may further include a third compound, a fourth compound, or any combination thereof.

[0115] In another embodiment, in addition to the organometallic compound, the light emitting device (e.g., an emission layer in a light emitting device) may further include a third compound. At least one of the organometallic compound and the third compound may each independently include at least one deuterium atom. In an embodiment, in addition to the organometallic compound and the third compound, the light emitting device (e.g., an emission layer in a light emitting device) may further include a second compound, a fourth compound, or any combination thereof.

[0116] In another embodiment, in addition to the organometallic compound, the light emitting device (e.g., an emission layer in a light emitting device) may further include a fourth compound. At least one of the organometallic compound and the fourth compound may each independently include at least one deuterium atom. The fourth compound may improve the color purity, luminous efficiency, and life characteristics of the light emitting device. In an embodiment, in addition to the organometallic compound and the fourth compound, the light emitting device (e.g., an emission layer in a light emitting device) may further include a second compound, a third compound, or any combination thereof.

[0117] In another embodiment, in addition to the organometallic compound, the light emitting device (e.g., an emission 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 exciplex. At least one of the organometallic compound, the second compound, and the third compound may each independently include at least one deuterium atom.

[0118] In an embodiment, the emission layer of the light emitting device may include: the organic metal compound; and the second compound, the third compound, the fourth compound, or any combination thereof; and the emission layer may emit blue light.

[0119] In an embodiment, the maximum emission wavelength of blue light may be in the range of about 430nm to 480nm. For example, the maximum emission wavelength of blue light may be in the range of about 430nm to 475nm. For example, the maximum emission wavelength of blue light may be in the range of about 440nm to 475nm. For example, the maximum emission wavelength of blue light may be in the range of about 450nm to 475nm. For example, the maximum emission wavelength of blue light may be in the range of about 430nm to 470nm. For example, the maximum emission wavelength of blue light may be in the range of about 440nm to 470nm. For example, the maximum emission wavelength of blue light may be in the range of about 450nm to 470nm. For example, the maximum emission wavelength of blue light may be in the range of about 430nm to 465nm. For example, the maximum emission wavelength of blue light may be in the range of about 440nm to 465nm. For example, the maximum emission wavelength of blue light may be in the range of about 450nm to 465nm. For example, the maximum emission wavelength of blue light may be in the range of about 430nm to 460nm. For example, the maximum emission wavelength of blue light may be in the range of about 440 nm to 460 nm. For example, the maximum emission wavelength of blue light may be in the range of about 450 nm to 460 nm.

[0120] In an embodiment, the second compound may include a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or any combination thereof.

[0121] In an embodiment, the third compound may not include CBP or mCBP:

[0122]

[0123] In an embodiment, the difference between the triplet energy level (eV) of the fourth compound and the singlet energy level (eV) of the fourth compound may be in the range of about 0 eV to about 0.5 eV (for example, the triplet energy level (eV) of the fourth compound and the singlet energy level (eV) of the fourth compound may be in the range of about 0 eV to about 0.3 eV).

[0124] In an embodiment, the fourth compound may be a compound including at least one ring group including boron (B) and nitrogen (N) as ring-forming atoms.

[0125] In an embodiment, the fourth compound may be a C-containing compound including at least two condensed ring groups sharing a boron atom (B). 8 -C 60 Polycyclic compounds.

[0126] In an embodiment, the fourth compound may include a condensed ring in which at least one third ring may be condensed with at least one fourth ring,

[0127] The third ring may be a cyclopentane group, a cyclohexane group, a cycloheptane group, a cyclooctane group, a cyclopentene group, a cyclohexene group, a cycloheptene group, a cyclooctene group, an adamantane group, a norbornene group, a norbornane group, a bicyclo[1.1.1]pentane group, a bicyclo[2.1.1]hexane group, a bicyclo[2.2.2]octane group, a phenyl group, a pyridine group, a pyrimidine group, a pyridazine group, a pyrazine group or a triazine group, and

[0128] The fourth ring may be a 1,2-azaborinyl group, a 1,3-azaborinyl group, a 1,4-azaborinyl group, a 1,2-dihydro-1,2-azaborinyl group, a 1,4-oxaborinyl group, a 1,4-thiaborinyl group, or a 1,4-dihydroborinyl group.

[0129] In an embodiment, the third compound may not include a compound represented by Formula 3-1 described below.

[0130] In an embodiment, the second compound may include a compound represented by Formula 2:

[0131] [Formula 2]

[0132]

[0133] In formula 2,

[0134] L 51 To L 53may each independently be a single bond, unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0135] b51 to b53 may each independently be an integer from 1 to 5,

[0136] X 54 Can be N or C (R 54 ), X 55 Can be N or C (R 55 ), X 56 Can be N or C (R 56 ), and X 54 To X 56 At least one of them can be N,

[0137] R 51 To R 56 and R 10a They may be the same as described in the specification.

[0138] In an embodiment, the third compound may include a compound represented by Formula 3-1, a compound represented by Formula 3-2, a compound represented by Formula 3-3, a compound represented by Formula 3-4, a compound represented by Formula 3-5, or any combination thereof:

[0139] [Formula 3-1]

[0140]

[0141] [Formula 3-2]

[0142]

[0143] [Formula 3-3]

[0144]

[0145] [Formula 3-4]

[0146]

[0147] [Formula 3-5]

[0148]

[0149] In Formula 3-1 to Formula 3-5,

[0150] Cyclo 71 To Ring CY 74can be independently π-electron-rich C 3 -C 60 a cyclic group or a pyridine group,

[0151] X 82 It can be a single bond, O, S, N-[(L 82 ) b82 -R 82 ]、C(R 82a )(R 82b ) or Si(R 82a )(R 82b ),

[0152] X 83 It can be a single bond, O, S, N-[(L 83 ) b83 -R 83 ]、C(R 83a )(R 83b ) or Si(R 83a )(R 83b ),

[0153] X 84 Can be O, S, N-[(L 84 ) b84 -R 84 ]、C(R 84a )(R 84b ) or Si(R 84a )(R 84b ),

[0154] X 85 Can be C or Si,

[0155] L 81 To L 85 can be independently a single bond, *-C(Q 4 )(Q 5 )-*'、*-Si(Q 4 )(Q 5 )-*', unsubstituted or substituted with at least one R 10a The π-electron-rich C 3 -C 60 The cyclic group is either unsubstituted or substituted with at least one R 10a A pyridine group, wherein Q 4 and Q 5 are independently related to the reference Q as defined herein 1 Same as described,

[0156] b81 to b85 may each independently be an integer from 1 to 5,

[0157] R 71 To R74 , R 81 To R 85 , R 82a , R 82b , R 83a , R 83b , R 84a and R 84b The same as described in the manual,

[0158] a71 to a74 may each independently be an integer from 0 to 20, and

[0159] R 10a R described herein 10a same.

[0160] In an embodiment, the fourth compound may be a compound represented by Formula 502, a compound represented by Formula 503, or any combination thereof:

[0161] [Formula 502]

[0162]

[0163] [Formula 503]

[0164]

[0165] In equation 502 and equation 503,

[0166] Ring A 501 To Ring A 504 can be independently C 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group,

[0167] Y 505 Can be O, S, N (R 505 )、B(R 505 )、C(R 505a )(R 505b ) or Si(R 505a )(R 505b ),

[0168] Y 506 Can be O, S, N (R 506 )、B(R 506 )、C(R 506a )(R 506b ) or Si(R 506a )(R 506b ),

[0169] Y 507 Can be O, S, N (R507 )、B(R 507 )、C(R 507a )(R 507b ) or Si(R 507a )(R 507b ),

[0170] Y 508 Can be O, S, N (R 508 )、B(R 508 )、C(R 508a )(R 508b ) or Si(R 508a )(R 508b ),

[0171] Y 51 and Y 52 may be independently B, P(=O) or S(=O),

[0172] R 500a , R 500b , R 501 To R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a and R 508b are the same as described in the specification, and

[0173] a501 to a504 may each independently be an integer of 0 to 20.

[0174] In an embodiment, the light emitting device may satisfy at least one of conditions 1 to 4:

[0175] [Condition 1]

[0176] 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;

[0177] [Condition 2]

[0178] The LUMO energy level (eV) of the organometallic compound> the LUMO energy level (eV) of the second compound;

[0179] [Condition 3]

[0180] The highest occupied molecular orbital (HOMO) energy level (eV) of the organometallic compound is greater than the HOMO energy level (eV) of the third compound; and

[0181] [Condition 4]

[0182] The HOMO energy level (eV) of the third compound is greater than the HOMO energy level (eV) of the second compound.

[0183] The highest occupied molecular orbital (HOMO) energy level and the lowest unoccupied molecular orbital (LUMO) energy level of each of the organometallic compound, the second compound, and the third compound may both be negative values, and may be measured according to any suitable method in the related art.

[0184] In an embodiment, the absolute value of the difference between the LUMO energy level of the organic metal compound and the LUMO energy level of the second compound may be in the range of about 0.1 eV to about 1.0 eV; the absolute value of the difference between the LUMO energy level of the organic metal compound and the LUMO energy level of the third compound may be in the range of about 0.1 eV to about 1.0 eV; the absolute value of the difference between the HOMO energy level of the organic metal compound and the HOMO energy level of the second compound may be less than or equal to about 1.25 eV (for example, in the range of about 0.2 eV to about 1.25 eV); and / or the absolute value of the difference between the HOMO energy level of the organic metal compound and the HOMO energy level of the third compound may be less than or equal to about 1.25 eV (for example, in the range of about 0.2 eV to about 1.25 eV).

[0185] When the relationship between the LUMO energy level and the HOMO energy level satisfies the above conditions, a balance between holes and electrons injected into the emission layer can be achieved.

[0186] The light emitting device may have the structure according to the first embodiment or the second embodiment.

[0187] [First embodiment]

[0188] According to a first embodiment, the organometallic compound may be included in an emission layer in an intermediate layer of a light-emitting device, wherein the emission layer may further include a host, the organometallic compound may be different from the host, and the emission layer may emit phosphorescence or fluorescence emitted from the organometallic compound. For example, according to the first embodiment, the organometallic compound may be a dopant or an emitter. In an embodiment, the organometallic compound may be a phosphorescent dopant or a phosphorescent emitter.

[0189] The phosphorescence or fluorescence emitted from the organometallic compound may be blue light.

[0190] The emission layer may further include an auxiliary dopant. The auxiliary dopant may improve the light emission efficiency of the organometallic compound by efficiently transferring energy to the organometallic compound as a dopant or an emitter.

[0191] The auxiliary dopant may be different from the organometallic compound and the host.

[0192] In an embodiment, the auxiliary dopant may be a delayed fluorescence emission compound.

[0193] In an embodiment, the auxiliary dopant may be a compound including at least one ring group including boron (B) and nitrogen (N) as ring-forming atoms.

[0194] [Second embodiment]

[0195] According to a second embodiment, an organic metal compound may be included in an emission layer in an intermediate layer of a light-emitting device, wherein the emission layer may also include a host and a dopant, the organic metal compound, the host and the dopant may be different from each other, and the emission layer may emit phosphorescence or fluorescence (e.g., delayed fluorescence) from the dopant.

[0196] In an embodiment, the organometallic compound in the second embodiment may be used as an auxiliary dopant that transfers energy to a dopant (or emitter), and may not be used as a dopant.

[0197] In an embodiment, the organometallic compound in the second embodiment may be used as an emitter, and may be used as an auxiliary dopant that transfers energy to a dopant (or emitter).

[0198] For example, phosphorescence or fluorescence emitted from the dopant (or emitter) in the second embodiment may be blue phosphorescence or blue fluorescence (eg, blue delayed fluorescence).

[0199] The dopant (or emitter) in the second embodiment can be a phosphorescent dopant material (e.g., an organic metal compound represented by Formula 1, an organic metal compound represented by Formula 401, or any combination thereof) or any fluorescent dopant material (e.g., a compound represented by Formula 501, a compound represented by Formula 502, a compound represented by Formula 503, or any combination thereof).

[0200] In the first and second embodiments, the blue light may be a blue light having a maximum emission wavelength in the range of about 390 nm to about 500 nm. For example, the blue light may be a blue light having a maximum emission wavelength in the range of about 410 nm to about 490 nm. For example, the blue light may be a blue light having a maximum emission wavelength in the range of about 430 nm to about 480 nm. For example, the blue light may be a blue light having a maximum emission wavelength in the range of about 440 nm to about 475 nm. For example, the blue light may be a blue light having a maximum emission wavelength in the range of about 455 nm to about 470 nm.

[0201] The auxiliary dopant in the first embodiment may include, for example, a fourth compound represented by Formula 502 or Formula 503.

[0202] The host in the first and second embodiments may be any host material (eg, the compound represented by Formula 301, the compound represented by Formula 301-1, the compound represented by Formula 301-2, or any combination thereof).

[0203] In an embodiment, the host in the first embodiment and the second embodiment may be the second compound, the third compound, or any combination thereof.

[0204] In an embodiment, the light emitting device may further include a capping layer located outside the first electrode and / or outside the second electrode.

[0205] In an embodiment, the light emitting device may further include at least one of a first capping layer located outside the first electrode and a second capping layer located outside the second electrode, and the organic metal compound represented by Formula 1 may be included in at least one of the first capping layer and the second capping layer. The first capping layer and / or the second capping layer may be the same as described in the specification.

[0206] In an embodiment, the light emitting device may further include:

[0207] A first capping layer, located outside the first electrode and including an organic metal compound represented by Formula 1;

[0208] a second capping layer located outside the second electrode and including an organic metal compound represented by Formula 1; or

[0209] A first cover layer and a second cover layer.

[0210] The expression “(the intermediate layer and / or the capping layer) includes at least one organometallic compound represented by Formula 1” as used herein may be interpreted to mean “(the intermediate layer and / or the capping layer) may include one organometallic compound of Formula 1 or two different organometallic compounds of Formula 1”.

[0211] In an embodiment, the intermediate layer and / or the cap layer may include only compound 1 as an organic metal compound. For example, compound 1 may be present in the emission layer of the light-emitting device. In an embodiment, the intermediate layer may include compound 1 and compound 2 as organic metal compounds. For example, compound 1 and compound 2 may be present in the same layer (for example, compound 1 and compound 2 may both be present in the emission layer), or may be present in different layers (for example, compound 1 may be present in the emission layer, and compound 2 may be present in the electron transport region).

[0212] The term "intermediate layer" as used herein may be a single layer and / or all layers located between a first electrode and a second electrode of a light emitting device.

[0213] In an embodiment, the 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 the first electrode of the light emitting device may be electrically connected to at least one of the source electrode and the drain electrode. In an embodiment, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof. The electronic device may be the same as described herein.

[0214] In an embodiment, an electronic device may include a light emitting device.

[0215] For example, the electronic device can be a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a phone (such as a portable phone), a tablet personal computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a microdisplay, a three-dimensional (3D) display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays stitched together, a theater screen, a stadium screen, a light therapy device, or a sign.

[0216] The embodiment provides an organometallic compound, and the organometallic compound can be represented by Formula 1. Formula 1 is the same as described in the specification.

[0217] Those of ordinary skill in the art can readily understand methods of synthesizing organometallic compounds by referring to the synthesis examples and / or examples described herein.

[0218] [Description of Formula 1]

[0219] [Formula 1]

[0220]

[0221] In formula 1, T 1 It can be sp 3 Elements of hybrid orbitals. sp 3 The hybrid orbital may be the same as described in the related art.

[0222] In an embodiment, T 1 It can be carbon (C), silicon (Si) or germanium (Ge).

[0223] In formula 1, M 1 and M 2Each may independently 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).

[0224] In the embodiment, M 1 and M 2 Each may independently be platinum (Pt), palladium (Pd) or gold (Au).

[0225] In the embodiment, M 1 and M 2 They may all be Pt.

[0226] In formula 1, X 11 To X 14 and X 21 To X 24 can all independently be C or N.

[0227] In an embodiment, X 11 and X 21 They can all be C.

[0228] In an embodiment, X 11 and X 21 can all be C, and

[0229] X 11 With M 1 The key between and X 21 With M 2 The bond between them can be a coordination bond.

[0230] In an embodiment, X 11 and X 21 They may all be carbon (C) in the carbene moiety.

[0231] In an embodiment, X 12 , X 13 , X 22 and X 23 can all be C, and

[0232] X 14 and X 24 Both can be N.

[0233] In an embodiment, X 11 With M 1 The key between and X 21 With M 2 The bonds between can all be coordination bonds,

[0234] X 12 With M 1 The key between 13 With M1 The key between and X 14 With M 1 One of the bonds between may be a coordinate bond, and the rest may all be covalent bonds, and

[0235] X 22 With M 2 The key between 23 With M 2 The key between and X 24 With M 2 One of the bonds between may be a coordinate bond, and the rest thereof may all be covalent bonds.

[0236] In an embodiment, X 11 With M 1 The key between 14 With M 1 The key between 21 With M 2 The key between and X 24 With M 2 The bonds between can all be coordination bonds, and

[0237] X 12 With M 1 The key between 13 With M 1 The key between 22 With M 2 The key between and X 23 With M 2 The bonds between them can all be covalent bonds.

[0238] In an embodiment, X 11 , X 21 , X 12 , X 22 , X 13 and X 23 Can be C,

[0239] X 14 and X 24 Can be N,

[0240] X 11 With M 1 The key between 14 With M 1 The key between 21 With M 2 The key between and X 24 With M 2 The bonds between can all be coordination bonds, and

[0241] X 12 With M 1 The key between13 With M 1 The key between 22 With M 2 The key between and X 23 With M 2 The bonds between them can all be covalent bonds.

[0242] In Formula 1, ring CY 11 To Ring CY 14 and CY 21 To Ring CY 24 can be independently C 5 -C 30 Carbocyclic or C 1 -C 30 Heterocyclic group.

[0243] In an embodiment, CY 11 To Ring CY 14 and CY 21 To Ring CY 24 can be independently a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a benzo[9,10]phenanthrene group, a pyrene group, group, a cyclopentadiene group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzothioole group, a dibenzothioole group, an azafluorene group, an azacarbazole group, an azadibenzofuran group, an azadibenzothiophene group, an azadibenzothioole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, a benzothiadiazole group, a dibenzooxasilane group, a dibenzothiasilane group, a dibenzodihydroazasilane group, a dibenzodihydrodisilane group, a dibenzodihydrosilane group, a dibenzodioxane group, a dibenzooxathiine group, a dibenzoxazine group, a dibenzopyran group, a dibenzodithiine group, a dibenzothiazine group, a dibenzothiopyran group, a dibenzocyclopentadiene group, a dibenzodihydropyridine group or a dibenzodihydropyrazine group.

[0244] In an embodiment, CY 11 and CY 21 can be independently nitrogen-containing C 1 -C 60Heterocyclic group.

[0245] In an embodiment, CY 11 and CY 21 Each of them may independently be an imidazole group, a triazole group, a benzimidazole group, a naphthimidazole group or an imidazopyridine group.

[0246] In an embodiment, X 11 and X 21 can all be C, and

[0247] Cyclo 11 and CY 21 Each of them may independently be an imidazole group, a triazole group, a benzimidazole group, a naphthimidazole group or an imidazopyridine group.

[0248] In an embodiment, X 11 and X 21 may all be carbon (C) in the carbene moiety, and

[0249] Cyclo 11 and CY 21 Each of them may independently be an imidazole group, a triazole group, a benzimidazole group, a naphthimidazole group or an imidazopyridine group.

[0250] In an embodiment, CY 12 and CY 22 The benzophenone groups may be independently phenyl groups, pyridine groups, pyrimidine groups, naphthyl groups, dibenzofuran groups, dibenzothiophene groups, carbazole groups, fluorene groups, dibenzosilole groups, naphthobenzofuran groups, naphthobenzothiophene groups, benzocarbazole groups, benzofluorene groups, naphthobenzosilole groups, dinaphthofuran groups, dinaphthothiophene groups, dibenzocarbazole groups, dibenzofluorene groups, dinaphthosilole groups, aza a dibenzofuran group, an azadibenzothiophene group, an azacarbazole group, an azafluorene group, an azadibenzosilole group, an azanaphthobenzofuran group, an azanaphthobenzothiophene group, an azabenzocarbazole group, an azabenzofluorene group, an azanaphthobenzosilole group, an azadinaphthofuran group, an azadinaphthothiophene group, an azadibenzocarbazole group, an azadibenzofluorene group, an azadinaphthobenzosilole group, an azadinaphthofuran group, an azadinaphthothiophene group, an azadibenzocarbazole group, an azadinabenzofluorene group or an azadinaphthosilole group.

[0251] In an embodiment, CY 12 and CY 22 Each of them may independently be a benzene group, a pyridine group, a pyrimidine group, a naphthalene group, a dibenzofuran group, a dibenzothiophene group, a carbazole group, a fluorene group or a dibenzosilole group.

[0252] In an embodiment, CY 13 and CY 23 Can be independently: C2 -C 8 Monocyclic group; or C 4 -C 20 Polycyclic groups, in which two or three C 2 -C 8 The monocyclic groups are condensed with each other.

[0253] In an embodiment, CY 13 and CY 23 They may each independently be a benzene group, a pyridine group, a pyrimidine group, a naphthalene group, a dibenzofuran group, a dibenzothiophene group, a carbazole group, a fluorene group, a dibenzosilole group, an azadibenzofuran group, an azadibenzothiophene group, an azacarbazole group, an azafluorene group or an azadibenzosilole group.

[0254] In an embodiment, CY 14 and CY 24 can be independently nitrogen-containing C 1 -C 60 Heterocyclic group.

[0255] In an embodiment, CY 14 and CY 24 Each of them may independently be a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, a benzopyrazole group, a benzimidazole group or a benzothiazole group.

[0256] In formula 1, L 11 To L 13 and L 21 To L 23 can be 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 * and *' may both indicate the binding site with the adjacent atom.

[0257] In Formula 1, n11 to n13 and n21 to n23 may represent L 11 To L 13 and L 21 To L 23 , and n11 to n13 and n21 to n23 may each independently be an integer from 0 to 5.

[0258] In formula 1, when n11 is 0, *-(L 11 ) n11 -*', when n12 is 0, it may not exist *-(L 12 ) n12 -*', when n13 is 0, it may not exist *-(L 13 ) n13 -*', when n21 is 0, it may not exist *-(L 21 ) n21 -*', when n22 is 0, it may not exist *-(L 22 ) n22 -*', and when n23 is 0, there may be no *-(L 23 ) n23 -*'.

[0259] As used herein, "absence" may be 11 ) n11 -*'、*-(L 12 ) n12 -*'、*-(L 13 ) n13 -*'、*-(L 21 ) n21 -*'、*-(L 22 ) n22 -*' or *-(L 23 ) n23 The expression of -*' refers to non-bonding and means that two adjacent ring groups are not bonded via *-(L 11 ) n11 -*'、*-(L 12 ) n12 -*'、*-(L 13 ) n13 -*'、*-(L 21 ) n21 -*'、*-(L 22 ) n22 -*' or *-(L23 ) n23 -*' are connected to each other. For example, when n11 is 0, the ring CY 11 and CY 12 You can use M 1 connected to each other (and / or both formed into R 11 and R 12 is unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 The heterocyclic groups are bound to each other) and may not be connected via *-(L 11 ) n11 -*' connect to each other.

[0260] In an embodiment, when n11 is 2 or greater, two or more L 11 may be the same as or different from each other. When n12 is 2 or greater, two or more L 12 may be the same as or different from each other. When n13 is 2 or greater, two or more L 13 may be the same as or different from each other. When n21 is 2 or greater, two or more L 21 may be the same as or different from each other. When n22 is 2 or greater, two or more L 22 may be the same as or different from each other, and when n23 is 2 or greater, two or more L 23 May be the same as or different from each other.

[0261] In an embodiment, L 11 , L 13 , L 21 and L 23 They can all be single bonds.

[0262] In an embodiment, n12 and n22 may both be 0.

[0263] In an embodiment, L 11 , L 13 , L 21 and L 23 can all be single bonds, and

[0264] n12 and n22 can both be 0.

[0265] In an embodiment, R 1a and R 1b can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkylthio, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C 6 -C 60 Arylthio, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ).

[0266] R 10a and Q 1 To Q 3 All are the same as described in the manual.

[0267] In an embodiment, R 1a and R 1b can all independently be:

[0268] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20Alkyl or C 1 -C 20 Alkoxy;

[0269] All substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 10 C alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridinyl, pyrimidinyl, or any combination thereof 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0270] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q32 )(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, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl or azadibenzothiorolyl; or

[0271] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),and

[0272] Q 1 To Q 3 and Q 31 To Q 33can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0273] In formula 1, R 11 To R 14 and R 21 To R 24 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkylthio, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C 6 -C 60 Arylthio, -C(Q 1 )(Q2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ).

[0274] R 10a and Q 1 To Q 3 All are the same as described in the manual.

[0275] In Formula 1, a11 to a14 and a21 to a24 represent R 11 To R 14 and R 21 To R 24 , and a11 to a14 and a21 to a24 may each independently be an integer of 1 to 20.

[0276] In an embodiment, when a11 is 2 or greater, two or more R 11 may be the same as or different from each other. When a12 is 2 or greater, two or more R 12 may be the same as or different from each other. When a13 is 2 or greater, two or more R 13 may be the same as or different from each other. When a14 is 2 or greater, two or more R 14 may be the same as or different from each other. When a21 is 2 or greater, two or more R 21 may be the same as or different from each other. When a22 is 2 or greater, two or more R 22 may be the same as or different from each other. When a23 is 2 or greater, two or more R 23 may be the same as or different from each other, and when a24 is 2 or greater, two or more R 24 May be the same as or different from each other.

[0277] In an embodiment, R 11 To R 14 and R 21 To R 24 can all independently be:

[0278] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0279] All substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 10 C alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridinyl, pyrimidinyl, or any combination thereof 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0280] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 )、-S(Q 31)、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl or azadibenzothiorolyl; or

[0281] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),and

[0282] Q 1 To Q 3 and Q31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0283] In an embodiment, R 11 To R 14 and R 21 To R 24 can all independently be:

[0284] Hydrogen, deuterium, -F, -Cl, -Br, -I or C 1 -C 20 alkyl;

[0285] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 10 C alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidyl or any combination thereof 1 -C 20 Alkyl; or

[0286] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , C 1 -C 20Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidyl, C 1 -C 10 Alkylphenyl or any combination thereof, phenyl, biphenyl, terphenyl, C 1 -C 10 Alkylphenyl or naphthyl.

[0287] In formula 1, the number of R is a11 11 , the number of R is a12 12 , the number of R is a13 13 , the number of R is a14 14 , the number of R is a21 21 , the number of R is a22 22 , the number of R is a23 23 , the number of R is a24 24 , R 1a and R 1b Two or more adjacent groups may optionally be combined with each other to form an unsubstituted or substituted group having at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group.

[0288] R 10a May be the same as described herein.

[0289] In an embodiment, n12 and n22 may both be 0.

[0290] In the embodiment, in Formula 1, The moieties represented by may each independently be a moiety represented by one of formula CY1(1) to formula CY1(11):

[0291]

[0292] In formula CY1(1) to formula CY1(11),

[0293] Z 11 To Z 17 can be independently related to R in formula 1 11 Same as described,

[0294] * indicates the same as M in Formula 1 1 or M 2 The binding site of

[0295] *' represents the L in formula 1 11or L 21 The combination position.

[0296] In the embodiment, in Formula 1, The moieties represented by may each independently be a moiety represented by one of formula CY2(1) to formula CY2(13):

[0297]

[0298]

[0299] In formula CY2(1) to formula 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 ),

[0301] T 22 It can be C(Y 21 ), N or Si(Y 21 ),

[0302] Z 21 To Z 26 , Y 21 and Y 22 can be independently related to R in formula 1 12 Same as described,

[0303] * indicates the same as M in Formula 1 1 or M 2 The binding position of

[0304] *' represents the L in formula 1 11 or L 21 The binding site of

[0305] *" indicates the difference with T in Formula 1 1 The combination position.

[0306] In the embodiment, in Formula 1, The moieties represented by may each independently be a moiety represented by one of formula CY3(1) to formula CY3(25):

[0307]

[0308]

[0309] In formula CY3(1) to formula CY3(25),

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

[0312] Z 31 To Z 36 , Y 31 and Y 32 can be compared with R in formula 1 13 Same as described,

[0313] * indicates the same as M in Formula 1 1 or M 2 The binding position of

[0314] *" indicates the same as T in Formula 1 1 The binding site of

[0315] *"' indicates that L in formula 1 13 or L 23 The combination position.

[0316] In an embodiment, n12 and n22 may both be 0.

[0317] In the embodiment, in Formula 1, The moieties represented by may each independently be a moiety represented by one of formula CY4(1) to formula CY4(29):

[0318]

[0319]

[0320]

[0321] In formula CY4(1) to formula CY4(29),

[0322] Z 41 To Z 47 can be compared with R in formula 1 14 Same as described,

[0323] * indicates the same as M in Formula 1 1 or M 2 The binding site of

[0324] *"' indicates that L in formula 1 13 or L 23 The combination position.

[0325] In an embodiment, the organometallic compound may be represented by Formula 1-1:

[0326] [Formula 1-1]

[0327]

[0328] In formula 1-1,

[0329] T 1 、M 1 and M 2 may all be the same as described herein,

[0330] 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, X 115 It can be C(R 115 ) or N,

[0331] X 121 It can be C(R 121 ) or N, X 122 It can be C(R 122 ) or N, X 123 It can be C(R 123 ) or N,

[0332] X 131 It can be C(R 131 ) or N, X 132 It can be C(R 132 ) or N, X 133 It can be C(R 133 ) or N, X 134 It can be C(R 134 ) or N, X 135 It can be C(R 135 ) or N, X 136 It can be C(R 136 ) or N,

[0333] X 141 It can be C(R 141 ) or N, X 142 It can be C(R 142 ) or N, X 143 It can be C(R 143 ) or N, X144 It can be C(R 144 ) or N,

[0334] X 212 It can be C(R 212 ) or N, X 213 It can be C(R 213 ) or N, X 214 It can be C(R 214 ) or N, X 215 It can be C(R 215 ) or N,

[0335] X 221 It can be C(R 221 ) or N, X 222 It can be C(R 222 ) or N, X 223 It can be C(R 223 ) or N,

[0336] X 231 It can be C(R 231 ) or N, X 232 It can be C(R 232 ) or N, X 233 It can be C(R 233 ) or N, X 234 It can be C(R 234 ) or N, X 235 It can be C(R 235 ) or N, X 236 It can be C(R 236 ) or N,

[0337] X 241 It can be C(R 241 ) or N, X 242 It can be C(R 242 ) or N, X 243 It can be C(R 243 ) or N, X 244 It can be C(R 244 ) or N,

[0338] R 111 To R 115 can be independently related to R in formula 1 11 Same as described,

[0339] R 121 To R 123 can be independently related to R in formula 1 12 Same as described,

[0340] R 131 To R 136can be independently related to R in formula 1 13 Same as described,

[0341] R 141 To R 144 can be independently related to R in formula 1 14 Same as described,

[0342] R 211 To R 215 can be independently related to R in formula 1 21 Same as described,

[0343] R 221 To R 223 can be independently related to R in formula 1 22 Same as described,

[0344] R 231 To R 236 can be independently related to R in formula 1 23 Same as described,

[0345] R 241 To R 244 can be independently related to R in formula 1 24 Same as described,

[0346] R 111 To R 115 , R 121 To R 123 , R 131 To R 136 , R 141 To R 144 , R 211 To R 215 , R 221 To R 223 , R 231 To R 236 and R 241 To R 244 Two or more adjacent groups may optionally be combined with each other to form an unsubstituted or substituted group having at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 a heterocyclic group, and

[0347] R 10a May be the same as described herein.

[0348] Unless otherwise defined herein, in the description of Formula 1, R 10a It can be:

[0349] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0350] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl, C 2 -C 60 Heteroarylalkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy;

[0351] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7-C 60 Arylalkyl, C 2 -C 60 Heteroarylalkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O) 2 (Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 heteroarylalkyl; or

[0352] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ).

[0353] Unless otherwise defined herein, in the description of Formula 1, Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C2 -C 60 Alkynyl; C 1 -C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroarylalkyl.

[0354] Since the organometallic compound represented by Formula 1 has 1 The complex structure and the M 2 The structure of the complex was determined by T 1 The structure of connecting elements to each other is different from that of only M 1 or M 2 Compared with the complex structure, the emission wavelength can be shortened, which can lead to a higher T1 energy level, increased spin-orbit coupling and reduced excited state lifetime.

[0355] When the emission wavelength is shortened and applied to a light-emitting device, the color purity can be increased, and when the organometallic compound is used as an energy transfer body in a light-emitting device, the overlap of the absorption / emission spectrum with the emitter can also be improved, which contributes to efficient energy transfer.

[0356] When spin-orbit coupling increases, the utilization of triplet states can also increase, which leads to rapid conversion between triplet states and singlet states. Accordingly, the emission ratio through intersystem conversion can be increased compared to quenching due to collisions between excitons. The reduction of excited state lifetime can lead to suppression of quenching due to collisions between excitons.

[0357] Therefore, when the organometallic compound represented by Formula 1 is used in a light emitting device, the life span and efficiency of the light emitting device may be improved.

[0358] [Description of other formulas]

[0359] [Formula 2]

[0360]

[0361] In formula 2, L 51 To L 53 may each independently be a single bond, unsubstituted or substituted with at least one R10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group.

[0362] In Formula 2, b51 to b53 can represent L 51 To L 53 , and b51 to b53 may each independently be an integer from 1 to 5. When b51 is 2 or greater, two or more L 51 can be the same or different from each other. When b52 is 2 or greater, two or more L 52 may be the same as or different from each other, and when b53 is 2 or greater, two or more L 53 In an embodiment, b51 to b53 may be 1 or 2 independently.

[0363] In an embodiment, L 51 To L 53 can all independently be:

[0364] a single key; or

[0365] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 alkoxy, phenyl, naphthyl, pyridyl, pyrimidyl, triazine, fluorenyl, dimethylfluorenyl, diphenylfluorenyl, carbazolyl, phenylcarbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzosilyl, dimethyldibenzosilyl, diphenyldibenzosilyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof, a phenyl group, a naphthalene group, an anthracene group, a phenanthrene group, a benzo[9,10]phenanthrene group, a pyrene group, group, a cyclopentadiene group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzosilole group, a dibenzosilole group, an azafluorene group, an azacarbazole group, an azadibenzofuran group, an azadibenzothiophene group, an azadibenzosilole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazolyl group a benzoxazine group, a dibenzopyran group, a dibenzothiazole group, a benzothiopyran group, a benzothiopyran group, a benzothiadiazole group, a benzothiadiazole group, a dibenzooxasilane group, a dibenzothiasilane group, a dibenzodihydroazasilane group, a dibenzodihydrodisilane group, a dibenzodihydrosilane group, a dibenzodioxane group, a dibenzooxathiine group, a dibenzoxazine group, a dibenzopyran group, a dibenzodithiine group, a dibenzothiazine group, a dibenzothiopyran group, a dibenzocyclopentadiene group, a dibenzodihydropyridine group, or a dibenzodihydropyrazine group, and

[0366] Q 31 To Q 33 can be independently hydrogen, deuterium, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl or triazinyl.

[0367] In the embodiment, in Formula 2, L 51 With R 51 The key between 52 With R 52 The key between 53 With R 53 The bond between two or more L 51 The bond between two or more L 52 The bond between two or more L 53 The key between 51 With X 54 and X 55 The bonds between carbons, L 52 With X 54 and X 56 The bonds between the carbons and L 53 With X 55 and X56 The bonds between the carbon atoms in the molecule may all be "carbon-carbon single bonds".

[0368] In formula 2, X 54 Can be N or C (R 54 ), X 55 Can be N or C (R 55 ), X 56 Can be N or C (R 56 ), and X 54 To X 56 At least one of them may be N. In Formula 2, R 54 To R 56 can be the same as described herein. In an embodiment, X 54 To X 56 Two or three of them can all be N.

[0369] In formula 2, R 51 To R 56 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C 6 -C 60 Arylthio, unsubstituted or substituted with at least one R 10a C 7 -C 60 Arylalkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Heteroarylalkyl, -C(Q1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ). Q 1 To Q 3 Same as described in the instructions.

[0370] In the embodiment, in Formula 2, R 51 To R 56 can all independently be:

[0371] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0372] All substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 10 C alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridinyl, pyrimidinyl, or any combination thereof 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0373] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl , benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazineyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, imidazopyrimidyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiorolyl, or a group represented by Formula 91; or

[0374] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),and

[0375] Q 1 To Q 3 and Q 31 To Q 33 can all independently be:

[0376] -CH 3 、-CD 3 、-CD 2 H.-CDH 2 、-CH 2 CH 3 、-CH 2 CD 3 、-CH 2 CD 2 H, -CH 2 CDH 2 、-CHDCH 3 、-CHDCD 2 H, -CHDCDH 2 、-CHDCD 3 、-CD 2 CD 3 、-CD2 CD 2 H or -CD 2 CDH 2 ;or

[0377] None or substituted with deuterium, C 1 -C 10 alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl or any combination thereof, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, phenyl, naphthyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl or triazinyl.

[0378] [Formula 91]

[0379]

[0380] In formula 91,

[0381] Cyclo 91 and CY 92 may be independently unsubstituted or substituted with at least one R 10a C 5 -C 30 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 30 Heterocyclic group,

[0382] X 91 Can be single bond, O, S, N(R 91 )、B(R 91 )、C(R 91a )(R 91b ) or Si(R 91a )(R 91b ),

[0383] R 91 , R 91a and R 91b can be respectively compared with the reference R as defined herein 82 , R 82a and R 82b Same as described,

[0384] R 10a may be the same as described herein, and

[0385] *Indicates the binding site with the adjacent atom.

[0386] In an embodiment, in Formula 91,

[0387] Cyclo 91 and CY 92may be independently unsubstituted or substituted with at least one R 10a a phenyl group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group or a triazine group, and

[0388] R 91 , R 91a and R 91b can all independently be:

[0389] Hydrogen or C 1 -C 10 Alkyl; or

[0390] None or substituted with deuterium, C 1 -C 10 Alkyl, phenyl, biphenyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, triazinyl or any combination thereof.

[0391] In the embodiment, in Formula 2, *-(L 51 ) b51 -R 51 The groups represented by *-(L 52 ) b52 -R 52 The groups represented by may not all be phenyl.

[0392] In the embodiment, in Formula 2, *-(L 51 ) b51 -R 51 The groups represented by *-(L 52 ) b52 -R 52 The groups represented may be the same as each other.

[0393] In the embodiment, in Formula 2, *-(L 51 ) b51 -R 51 The groups represented by *-(L 52 ) b52 -R 52 The groups represented may be different from each other.

[0394] In an embodiment, in Formula 2, b51 and b52 may both be 1, 2 or 3; and L 51 and L 52 may be independently unsubstituted or substituted with at least one R 10a A benzene group, a pyridine group, a pyrimidine group, a pyridazine group, a pyrazine group or a triazine group.

[0395] In the embodiment, in Formula 2, R 51 and R 52may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C 6 -C 60 Arylthio, -C(Q 1 )(Q 2 )(Q 3 ) or -Si(Q 1 )(Q 2 )(Q 3 ),and

[0396] Q 1 To Q 3 can be independently unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0397] In the embodiment, in Formula 2, *-(L 51 ) b51 -R 51 The group represented by may be a group represented by one of the formulas CY51-1 to CY51-26, and / or

[0398] By *-(L 52 ) b52 -R 52 The group represented by may be a group represented by one of the formulas CY52-1 to CY52-26, and / or

[0399] By *-(L 53 ) b53 -R 53 The group represented by the formula CY53-1 to the formula CY53-27, -C(Q 1 )(Q 2 )(Q 3 ) and -Si(Q 1 )(Q 2 )(Q3 ) represents a group:

[0400]

[0401]

[0402]

[0403] In formula CY51-1 to formula CY51-26, formula CY52-1 to formula CY52-26 and formula CY53-1 to formula CY53-27,

[0404] Y 63 Can be single bond, O, S, N(R 63 )、B(R 63 )、C(R 63a )(R 63b ) or Si(R 63a )(R 63b ),

[0405] Y 64 Can be single bond, O, S, N(R 64 )、B(R 64 )、C(R 64a )(R 64b ) or Si(R 64a )(R 64b ),

[0406] Y 67 Can be single bond, O, S, N(R 67 )、B(R 67 )、C(R 67a )(R 67b ) or Si(R 67a )(R 67b ), Y 68 Can be single bond, O, S, N(R 68 )、B(R 68 )、C(R 68a )(R 68b ) or Si(R 68a )(R 68b ),

[0407] Y in formula CY51-16 and formula CY51-17 63 and Y 64 They cannot all be single keys at the same time.

[0408] Y in formula CY52-16 and formula CY52-17 67 and Y 68 They cannot all be single keys at the same time.

[0409] In addition to R 51a To R 51e In addition to not all being hydrogen, R 51a To R 51e , R 61 To R 64 , R 63a , R 63b , R 64a and R 64b can each be independently compared to reference R as described herein 51 Same as described,

[0410] In addition to R 52a To R 52e In addition to not all being hydrogen, R 52a To R 52e , R 65 To R 68 , R 67a , R 67b , R 68a and R 68b can each be independently compared to reference R as described herein 52 Same as described,

[0411] In addition to R 53a To R 53e In addition to not all being hydrogen, R 53a To R 53e , R 69a and R 69b can each be independently compared to reference R as described herein 53 Same as described, and

[0412] *Indicates the binding site with the adjacent atom.

[0413] In the embodiment, in Formula CY51-1 to Formula CY51-26 and Formula CY52-1 to Formula 52-26, R 51a To R 51e and R 52a To R 52e can all independently be:

[0414] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzisothiazolyl , benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, imidazopyrimidyl, or any combination thereof, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl , benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazineyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, imidazopyrimidyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiorolyl, or a group represented by Formula 91; or

[0415] -C(Q 1 )(Q 2 )(Q 3 ) or -Si(Q 1 )(Q 2 )(Q 3 ),

[0416] Q 1 To Q 3 can be independently unsubstituted or substituted with deuterium, C 1 -C 10alkyl, phenyl, biphenyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, triazinyl or any combination thereof, phenyl, naphthyl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl or triazinyl,

[0417] In formula CY51-16 and formula CY51-17, Y 63 Can be O or S and Y 64 It can be Si(R 64a )(R 64b ), or Y 63 It can be Si(R 63a )(R 63b ) and Y 64 can be O or S, and

[0418] In formula CY52-16 and formula CY52-17, Y 67 Can be O or S and Y 68 It can be Si(R 68a )(R 68b ), or Y 67 It can be Si(R 67a )(R 67b ) and Y 68 Can be O or S.

[0419] [Formula 3]

[0420]

[0421] In Formula 3, ring CY 71 and CY 72 can be independently π-electron-rich C 3 -C 60 A cyclic group or a pyridine group.

[0422] In formula 3, X 71 It can be: a single bond; or a linking group including O, S, N, B, C, Si or any combination thereof.

[0423] In Formula 3, * represents a bonding site with any atom included in the remaining parts other than Formula 3 in the third compound.

[0424] [Formula 3-1]

[0425]

[0426] [Formula 3-2]

[0427]

[0428] [Formula 3-3]

[0429]

[0430] [Formula 3-4]

[0431]

[0432] [Formula 3-5]

[0433]

[0434] In Formula 3-1 to Formula 3-5, ring CY 71 To Ring CY 74 can be independently π-electron-rich C 3 -C 60 A cyclic group or a pyridine group.

[0435] In Formula 3-1 to Formula 3-5, X 82 Can be single bond, O, S, N-[(L 82 ) b82 -R 82 ]、C(R 82a )(R 82b ) or Si(R 82a )(R 82b ).

[0436] In Formula 3-1 to Formula 3-5, X 83 Can be single bond, O, S, N-[(L 83 ) b83 -R 83 ]、C(R 83a )(R 83b ) or Si(R 83a )(R 83b ).

[0437] In Formula 3-1 to Formula 3-5, X 84 Can be O, S, N-[(L 84 ) b84 -R 84 ]、C(R 84a )(R 84b ) or Si(R 84a )(R 84b ).

[0438] In Formula 3-1 to Formula 3-5, X 85 It can be C or Si.

[0439] In Formula 3-1 to Formula 3-5, L 81 To L 85 can be independently a single bond, *-C(Q 4 )(Q 5 )-*'、*-Si(Q 4 )(Q5 )-*', unsubstituted or substituted with at least one R 10a The π-electron-rich C 3 -C 60 The cyclic group is either unsubstituted or substituted with at least one R 10a of the pyridine group.

[0440] In equations 3-1 to 3-5, Q 4 and Q 5 can each be independently compared to reference Q as described herein 1 Same as described.

[0441] In Formulae 3-1 to 3-5, b81 to b85 may each independently be an integer of 1 to 5.

[0442] In Formula 3-1 to Formula 3-5, R 71 To R 74 , R 81 To R 85 , R 82a , R 82b , R 83a , R 83b , R 84a and R 84b May all be the same as described herein.

[0443] In Formula 3-1 to Formula 3-5, a71 to a74 represent R 71 To R 74 , and a71 to a74 may each independently be an integer from 0 to 20. When a71 is 2 or more, two or more R 71 can be the same as or different from each other. When a72 is 2 or greater, two or more R 72 can be the same as or different from each other. When a73 is 2 or greater, two or more R 73 may be the same as or different from each other, and when a74 is 2 or greater, two or more R 74 In an embodiment, a71 to a74 may each independently be an integer from 0 to 8.

[0444] R 10a May be the same as described herein.

[0445] In the embodiment, in Formula 3-1 to Formula 3-5, L 81 To L 85 can all independently be:

[0446] single bond;

[0447] *-C(Q 4 )(Q 5)-*' or *-Si(Q 4 )(Q 5 )-*';or

[0448] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 alkoxy, phenyl, naphthyl, pyridyl, pyrimidyl, triazine, fluorenyl, dimethylfluorenyl, diphenylfluorenyl, carbazolyl, phenylcarbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzosilyl, dimethyldibenzosilyl, diphenyldibenzosilyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof, a phenyl group, a naphthalene group, an anthracene group, a phenanthrene group, a benzo[9,10]phenanthrene group, a pyrene group, group, a cyclopentadiene group, a furan group, a thiophene group, a thiorrole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzothiorrole group, a dibenzothiorrole group, an azafluorene group, an azacarbazole group, an azadibenzofuran group, an azadibenzothiophene group, an azadibenzothiorrole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrrol group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, or a benzothiadiazole group, and

[0449] Q 4 , Q 5 and Q 31 To Q 33 can be independently hydrogen, deuterium, C 1 -C20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl or triazinyl.

[0450] In the embodiment, in Formula 3-1 and Formula 3-2, The group represented may be a group represented by one of formula CY71-1(1) to formula CY71-1(8), and / or

[0451] In formula 3-1 and formula 3-3, The group represented may be a group represented by one of formula CY71-2(1) to formula CY71-2(8), and / or

[0452] In formula 3-2 and formula 3-4, The group represented may be a group represented by one of formula CY71-3(1) to formula CY71-3(32), and / or

[0453] In equations 3-3 to 3-5, The group represented may be a group represented by one of formula CY71-4(1) to formula CY71-4(32), and / or

[0454] In formula 3-5, The group represented may be a group represented by one of the formulas CY71-5(1) to CY71-5(8):

[0455]

[0456]

[0457]

[0458]

[0459] In formula CY71-1(1) to formula CY71-1(8), formula CY71-2(1) to formula CY71-2(8), formula CY71-3(1) to formula CY71-3(32), formula CY71-4(1) to formula CY71-4(32) and formula CY71-5(1) to formula CY71-5(8),

[0460] X 82 To X 85 , L 81 ,b81,R 81 and R 85 may be the same as described herein, respectively,

[0461] X 86 Can be single bond, O, S, N(R 86 )、B(R 86 )、C(R 86a )(R 86b ) or Si(R 86a )(R 86b ), X 87 Can be single bond, O, S, N(R 87 )、B(R 87 )、C(R 87a )(R 87b ) or Si(R 87a )(R 87b ),

[0462] In Formula CY71-1(1) to Formula CY71-1(8) and Formula CY71-4(1) to Formula CY71-4(32), X 86 and X 87 They cannot all be single keys at the same time.

[0463] X 88 Can be single bond, O, S, N(R 88 )、B(R 88 )、C(R 88a )(R 88b ) or Si(R 88a )(R 88b ), X 89 Can be single bond, O, S, N(R 89 )、B(R 89 )、C(R 89a )(R 89b ) or Si(R 89a )(R 89b ),

[0464] In Formulas CY71-2(1) to CY71-2(8), Formulas CY71-3(1) to CY71-3(32), and Formulas CY71-5(1) to CY71-5(8), X 88 and X 89 cannot both be single bonds at the same time, and

[0465] R 86 To R 89 , R 86a , R 86b , R 87a , R 87b , R 88a , R 88b , R 89a and R 89b can each independently be compared with reference R as described herein 81 Same as described.

[0466] [Formula 502]

[0467]

[0468] [Formula 503]

[0469]

[0470] In Formula 502 and Formula 503, ring A 501 To Ring A 504 can be independently C 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0471] In equations 502 and 503, Y 505 Can be O, S, N (R 505 )、B(R 505 )、C(R 505a )(R 505b ) or Si(R 505a )(R 505b ).

[0472] In equations 502 and 503, Y 506 Can be O, S, N (R 506 )、B(R 506 )、C(R 506a )(R 506b ) or Si(R 506a )(R 506b ).

[0473] In equations 502 and 503, Y 507 Can be O, S, N (R 507 )、B(R 507 )、C(R 507a )(R 507b ) or Si(R 507a )(R 507b ).

[0474] In equations 502 and 503, Y 508 Can be O, S, N (R 508 )、B(R 508 )、C(R 508a )(R 508b ) or Si(R 508a )(R 508b ).

[0475] In equations 502 and 503, Y 51 and Y52 Each may independently be B, P(═O) or S(═O).

[0476] 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 Same as described here.

[0477] In Formula 502 and Formula 503, a501 to a504 represent R 501 To R 504 , and a501 to a504 may each independently be an integer from 0 to 20. When a501 is 2 or more, two or more R 501 can be the same or different from each other. When a502 is 2 or greater, two or more R 502 can be the same or different from each other. When a503 is 2 or greater, two or more R 503 may be the same as or different from each other, and when a504 is 2 or greater, two or more R 504 In an embodiment, a501 to a504 may each independently be an integer from 0 to 8.

[0478] In the manual, R 51 To R 56 , R 71 To R 74 , R 81 To R 85 , R 82a , R 82b , R 83a , R 83b , R 84a , R 84b , R 500a , R 500b , R 501 To R 508 , R 505a , R 505b , R 506a , R 506b , R 507a , R 507b , R 508a and R 508bcan be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C 6 -C 60 Arylthio, unsubstituted or substituted with at least one R 10a C 7 -C 60 Arylalkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Heteroarylalkyl, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ). Q 1 To Q 3 Can be the same as described in the specification.

[0479] For example, R 10aand R in equation 2, equation 3-1 to equation 3-5, equation 502, and equation 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 can all independently be:

[0480] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0481] All substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, C 1 -C 10 C alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridinyl, pyrimidinyl, or any combination thereof 1 -C 20 Alkyl or C 1 -C 20 Alkoxy;

[0482] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl , benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazineyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, imidazopyrimidyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiorolyl, or a group represented by Formula 91; or

[0483] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),and

[0484] Q 1 To Q 3 and Q 31 To Q 33 can all independently be:

[0485] -CH 3 、-CD 3 、-CD 2 H.-CDH 2 、-CH 2 CH 3 、-CH 2 CD 3 、-CH 2 CD 2 H, -CH 2 CDH 2 、-CHDCH 3 、-CHDCD 2 H, -CHDCDH 2 、-CHDCD 3 、-CD 2 CD 3 、-CD2 CD 2 H or -CD 2 CDH 2 ;or

[0486] None or substituted with deuterium, C 1 -C 10 alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl or any combination thereof, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, phenyl, naphthyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl or triazinyl.

[0487] In one or more embodiments, R in Formula 1 11 To R 14 , R 21 To R 24 ; 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 , R 507a , R 507b , R 508a and R 508b ; and R 10a can be independently hydrogen, deuterium, -F, cyano, nitro, -CH 3 、-CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , a group represented by one of Formulas 9-1 to 9-19, a group represented by one of Formulas 10-1 to 10-246, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q2 )(Q 3 ) or -P(=O)(Q 1 )(Q 2 )(where Q 1 To Q 3 Same as described here):

[0488]

[0489]

[0490]

[0491]

[0492]

[0493]

[0494]

[0495] In Formulae 9-1 to 9-19 and 10-1 to 10-246, * represents a bonding position with an adjacent atom, Ph represents a phenyl group, and TMS represents a trimethylsilyl group.

[0496] [Examples of Compounds]

[0497] In an embodiment, the organometallic compound represented by Formula 1 may be one of Compound 1 to Compound 6:

[0498]

[0499] In an embodiment, the second compound may be one of compounds ETH1 to ETH100:

[0500]

[0501]

[0502]

[0503]

[0504] In an embodiment, the third compound may be one of compound HTH1 to compound HTH40:

[0505]

[0506]

[0507] In an embodiment, the fourth compound may be one of compound DFD1 to compound DFD29:

[0508]

[0509]

[0510] In the above compounds, Ph represents phenyl, D 5 indicates that it is replaced by five deuteriums, and D 4 means replaced by four deuterium. The group represented by The groups represented are the same.

[0511] [ Figure 1 Description]

[0512] Figure 1 is a schematic cross-sectional view of a light emitting device 10 according to an embodiment. The light emitting device 10 includes a first electrode 110 , an intermediate layer 130 , and a second electrode 150 .

[0513] In the following, reference will be made to Figure 1 The structure of the light emitting device 10 and a method of manufacturing the light emitting device 10 according to the embodiment are described.

[0514] [First electrode 110]

[0515] exist Figure 1 In the embodiment, the substrate may be included under the first electrode 110 or on the second electrode 150. The substrate may be a glass substrate or a plastic substrate, but is not limited thereto. In an embodiment, the substrate may be a flexible substrate and may include a plastic having excellent heat resistance and durability (such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof).

[0516] The first electrode 110 may be formed by, for example, 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 may be a high work function material that facilitates injection of holes.

[0517] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, a material for forming the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2), zinc oxide (ZnO), or any combination thereof. In an embodiment, when the first electrode 110 is a semi-transmissive 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.

[0518] The first electrode 110 may have a structure consisting of a single layer or a structure including a plurality of layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0519] [Middle layer 130]

[0520] The intermediate layer 130 may be located on the first electrode 110. The intermediate layer 130 may include an emission layer.

[0521] The intermediate layer 130 may further include a hole transport region between the first electrode 110 and the emission layer and an electron transport region between the emission layer and the second electrode 150 .

[0522] The intermediate layer 130 may further include a metal-containing compound such as an organic metal compound, an inorganic material such as a quantum dot, or the like, in addition to various organic materials.

[0523] In an embodiment, the intermediate layer 130 may include: two or more emission units stacked between the first electrode 110 and the second electrode 150; and at least one charge generation layer between the two or more emission units. When the intermediate layer 130 includes two or more emission units and at least one charge generation layer as described above, the light emitting device 10 may be a tandem light emitting device.

[0524] [Hole Transport Region in Intermediate Layer 130]

[0525] The hole transport region may have a structure consisting of a layer consisting of a single material, a structure consisting of layers including different materials, or a structure including a plurality of layers including different materials.

[0526] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof.

[0527] In an embodiment, the hole transport region may have a multilayer 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 / emission auxiliary layer structure, wherein the layers of each structure may be stacked from the first electrode 110 in their corresponding stated order, but the structure of the hole transport region is not limited thereto.

[0528] The hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0529] [Formula 201]

[0530]

[0531] [Formula 202]

[0532]

[0533] In equation 201 and equation 202,

[0534] L 201 To L 204 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0535] L 205 Can be *-O-*', *-S-*', *-N(Q 201 )-*, unsubstituted or substituted with at least one R 10a C 1 -C 20 Alkylene, unsubstituted or substituted with at least one R 10a C 2 -C 20 Alkenylene, unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0536] xa1 to xa4 may each independently be an integer from 0 to 5,

[0537] xa5 can be an integer from 1 to 10,

[0538] R 201 To R 204 and Q 201 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0539] R 201 and R 202 may be optionally substituted via a single bond, unsubstituted or substituted with at least one R 10a C 1 -C 5 The alkylene group is either unsubstituted or substituted with at least one R 10a C 2 -C 5 The alkenylene groups are connected to each other to form an unsubstituted or substituted group having at least one R 10a C 8 -C 60 Polycyclic groups (eg, carbazole groups, etc.) (eg, see compound HT16),

[0540] R 203 and R 204 may be optionally substituted via a single bond, unsubstituted or substituted with at least one R 10a C 1 -C 5 The alkylene group is either unsubstituted or substituted with at least one R 10a C 2 -C 5 The alkenylene groups are connected to each other to form an unsubstituted or substituted group having at least one R 10a C 8 -C 60 Polycyclic groups, and

[0541] na1 can be an integer from 1 to 4.

[0542] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may each independently include at least one of the groups represented by Formulas CY201 to CY217:

[0543]

[0544] In formula CY201 to formula CY217, R 10b and R 10c can be independently compared with the reference R 10a Same as described, CY 201 To Ring CY204 can all be independently C 3 -C 20 Carbocyclic or C 1 -C 20 In the heterocyclic group, at least one hydrogen in Formula CY201 to Formula CY217 may be unsubstituted or replaced by R 10a replace.

[0545] In an embodiment, ring CY in formula CY201 to formula CY217 201 To Ring CY 204 Each of them may independently be a benzene group, a naphthyl group, a phenanthrene group or an anthracene group.

[0546] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may each independently include at least one of the groups represented by Formulae CY201 to CY203.

[0547] In an embodiment, the compound represented by Formula 201 may include at least one of the groups represented by Formulas CY201 to CY203 and at least one of the groups represented by Formulas CY204 to CY217.

[0548] In an embodiment, in formula 201, xa1 may be 1, R 201 It can be a group represented by one of the formulas CY201 to CY203, xa2 can be 0, R 202 It may be a group represented by one of Formula CY204 to Formula CY207.

[0549] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may not include the groups represented by Formula CY201 to Formula CY203.

[0550] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may both not include the groups represented by Formula CY201 to Formula CY203, and may each independently include at least one of the groups represented by Formula CY204 to Formula CY217.

[0551] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may not include groups represented by Formulas CY201 to CY217.

[0552] In an embodiment, the hole transport region may include one of compounds HT1 to HT46, m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiro-TPD, spiro-NPB, methylated NPB, TAPC, HMTPD, 4,4',4"-tri(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), and polyaniline / poly(4-styrenesulfonate) (PANI / PSS), or any combination thereof:

[0553]

[0554]

[0555]

[0556]

[0557]

[0558] The thickness of the hole transport region can be about to about For example, the thickness of the hole transport region may be in the range of about to about When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer may be about to about In the range of to about For example, the thickness of the hole injection layer can be about to about For example, the thickness of the hole transport layer can be about to about When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within these ranges, satisfactory hole transport characteristics can be obtained without significantly increasing the driving voltage.

[0559] The emission auxiliary layer can increase the luminous efficiency by compensating the optical resonance distance according to the wavelength of light emitted by the emission layer, and the electron blocking layer can block the leakage of electrons from the emission layer to the hole transport region. The material that can be included in the hole transport region can be included in the emission auxiliary layer and the electron blocking layer.

[0560] [p dopant]

[0561] In addition to these materials, the hole transport region may further include a charge generating material for improving conductive properties. The charge generating material may be dispersed uniformly or non-uniformly in the hole transport region (eg, in the form of a single layer composed of the charge generating material).

[0562] The charge generating material may be, for example, a p-dopant.

[0563] In an embodiment, the lowest unoccupied molecular orbital (LUMO) energy level of the p-dopant may be equal to or less than approximately −3.5 eV.

[0564] In an embodiment, the p-dopant may include a quinone derivative, a cyano-containing compound, a compound including the element EL1 and the element EL2, or any combination thereof.

[0565] Examples of quinone derivatives may include TCNQ, F 4 -TCNQ, etc.

[0566] Examples of cyano-containing compounds may include HAT-CN and a compound represented by Formula 221:

[0567]

[0568] [Formula 221]

[0569]

[0570] In formula 221,

[0571] R 221 To R 223 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 a heterocyclic group, and

[0572] R 221 To R 223 At least one of them may be independently C substituted with the following groups 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group: cyano; -F; -Cl; -Br; -I; C substituted with cyano, -F, -Cl, -Br, -I or any combination thereof 1 -C 20 or any combination thereof.

[0573] In the compound including the element EL1 and the element EL2, the element EL1 may be a metal, a metalloid, or any combination thereof, and the element EL2 may be a nonmetal, a metalloid, or any combination thereof.

[0574] Examples of metals may include alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), etc. (e.g., tantalum (Tb), 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), lutetium (Lu), etc.).

[0575] Examples of metalloids may include silicon (Si), antimony (Sb), and tellurium (Te).

[0576] Examples of non-metals may include oxygen (O) and halogens (eg, F, Cl, Br, I, etc.).

[0577] Examples of compounds including element EL1 and element EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, or metal iodides), metalloid halides (e.g., metalloid fluorides, metalloid chlorides, metalloid bromides, or metalloid iodides), metal tellurides, or any combination thereof.

[0578] Examples of metal oxides may include tungsten oxide (eg, WO, W 2 O 3 , WO 2 , WO 3 , W 2 O 5 etc.), vanadium oxide (e.g., VO, V 2 O 3 , VO 2 、V 2 O 5 etc.), molybdenum oxide (MoO, Mo 2 O 3 、MoO 2、MoO 3 、Mo 2 O 5 etc.), rhenium oxide (e.g., ReO 3 wait).

[0579] Examples of the metal halide may include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

[0580] 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, CsI, and the like.

[0581] Examples of alkaline earth metal halides may include BeF 2 MgF 2 , CaF 2 , SrF 2 , BaF 2 、BeCl 2 MgCl 2 , CaCl 2 、SrCl 2 、BaCl 2 ,BeBr 2 MgBr 2 , CaBr 2 , SrBr 2 ,BaBr 2 ,BeI 2 MgI 2 ,CaI 2 , SrI 2 and BaI 2 .

[0582] Examples of transition metal halides may include titanium halides (eg, TiF 4 、TiCl 4 、TiBr 4 、TiI 4 etc.), zirconium halides (e.g., ZrF 4 、ZrCl 4 , ZrBr 4 , ZrI 4 etc.), hafnium halides (e.g., HfF 4 , HfCl 4 , HfBr 4 , HfI 4 etc.), vanadium halides (e.g., VF 3 、VCl 3 , VBr 3VI 3 etc.), niobium halides (e.g., NbF 3 、NbCl 3 , NbBr 3 , NbI 3 etc.), tantalum halides (e.g., TaF 3 、TaCl 3 、TaBr 3 、TaI 3 etc.), chromium halides (e.g., CrF 3 CrCl 3 CrBr 3 CrI 3 etc.), molybdenum halides (e.g., MoF 3 、MoCl 3 、MoBr 3 、MoI 3 etc.), tungsten halides (e.g., WF 3 、WCl 3 , WBr 3 , WI 3 etc.), manganese halides (e.g., MnF 2 、MnCl 2 、MnBr 2 、MnI 2 etc.), technetium halides (e.g., TcF 2 , TcCl 2 , TcBr 2 , TcI 2 etc.), rhenium halides (e.g., ReF 2 、ReCl 2 、ReBr 2 、ReI 2 etc.), ferrous halides (e.g., FeF 2 、FeCl 2 , FeBr 2 ,FeI 2 etc.), ruthenium halides (e.g., RuF 2 、RuCl 2 ,RuBr 2 , RuI 2 etc.), osmium halides (e.g., OsF 2 , OsCl 2 、OsBr 2 , OsI 2 etc.), cobalt halides (e.g., CoF 2 、CoCl 2 ,CoBr 2 、CoI 2 etc.), rhodium halides (e.g., RhF 2 , RhCl2 , RhBr 2 , RhI 2 etc.), iridium halides (e.g., IrF 2 、IrCl 2 ,IrBr 2 ,IrI 2 etc.), nickel halides (e.g., NiF 2 、NiCl 2 、NiBr 2 , NiI 2 etc.), palladium halides (e.g., PdF 2 , PdCl 2 , PdBr 2 , PdI 2 etc.), platinum halides (e.g., PtF 2 , PtCl 2 , PtBr 2 , PtI 2 etc.), cuprous halides (e.g., CuF, CuCl, CuBr, CuI, etc.), silver halides (e.g., AgF, AgCl, AgBr, AgI, etc.), and gold halides (e.g., AuF, AuCl, AuBr, AuI, etc.).

[0583] Examples of late transition metal halides may include zinc halides (e.g., ZnF 2 、ZnCl 2 、ZnBr 2 、ZnI 2 etc.), indium halides (e.g., InI 3 etc.) and tin halides (e.g., SnI 2 wait).

[0584] Examples of lanthanide metal halides may include YbF, YbF 2 , YbF 3 、SmF 3 、YbCl、YbCl 2 YbCl 3 、SmCl 3 , YbBr, YbBr 2 , YbBr 3 、SmBr 3 、YbI、YbI 2 ,YbI 3 、SmI 3 wait.

[0585] Examples of metalloid halides may include antimony halides (eg, SbCl 5 wait).

[0586] Examples of metal tellurides may include alkali metal tellurides (eg, Li 2 Te、Na 2 Te, K 2 Te、Rb 2 Te, Cs 2 Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe, BaTe, etc.), transition metal tellurides (e.g., TiTe 2 、ZrTe 2 、HfTe 2 、V 2 Te 3 , Nb 2 Te 3 、 2 Te 3 Cr 2 Te 3 、Mo 2 Te 3 , W 2 Te 3 , MnTe, TcTe, ReTe, FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu 2 Te, CuTe, Ag 2 Te, AgTe, Au 2 Te, etc.), late transition metal tellurides (e.g., ZnTe, etc.), and lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, etc.).

[0587] [Emitting Layer in Intermediate Layer 130]

[0588] When the light emitting device 10 is a full-color light emitting device, the emission layer may be patterned into a red emission layer, a green emission layer and / or a blue emission layer according to the sub-pixel. In an embodiment, the emission layer may have a stacked structure of two or more layers of a red emission layer, a green emission layer and a blue emission layer to emit white light, wherein the two or more layers may be in contact with each other or may be separated from each other. In an embodiment, the emission layer may include two or more materials of a red light emitting material, a green light emitting material and a blue light emitting material to emit white light, wherein the two or more materials may be mixed with each other in a single layer.

[0589] In an embodiment, the emission layer may include a host and a dopant (or emitter). In an embodiment, in addition to the host and the dopant (or emitter), the emission layer may further include an auxiliary dopant that facilitates energy transfer to the dopant (or emitter). When the emission layer includes a dopant (or emitter) and an auxiliary dopant, the dopant (or emitter) and the auxiliary dopant may be different from each other.

[0590] The organometallic compound represented by Formula 1 may be used as a dopant (or emitter), or may be used as an auxiliary dopant.

[0591] The amount of the dopant (or emitter) in the emission layer may be in the range of about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host.

[0592] The emission layer may include an organic metal compound represented by Formula 1. Based on 100 parts by weight of the emission layer, the amount of the organic metal compound in the emission layer may be in the range of about 0.01 parts by weight to about 30 parts by weight. For example, based on 100 parts by weight of the emission layer, the amount of the organic metal compound in the emission layer may be in the range of about 0.1 parts by weight to about 20 parts by weight. For example, based on 100 parts by weight of the emission layer, the amount of the organic metal compound in the emission layer may be in the range of about 0.1 parts by weight to about 15 parts by weight.

[0593] In an embodiment, the emissive layer may include quantum dots.

[0594] In an embodiment, the emission layer may include a delayed fluorescent material. The delayed fluorescent material may be used as a host or a dopant in the emission layer.

[0595] The thickness of the emission layer can be about to about For example, the thickness of the emission layer can be about to about When the thickness of the emission layer is within any of these ranges, excellent light emitting characteristics can be obtained without significantly increasing the driving voltage.

[0596] [main body]

[0597] In an embodiment, the host in the emission layer may include the second compound or the third compound described in the specification, or any combination thereof.

[0598] In an embodiment, the host may include a compound represented by Formula 301:

[0599] [Formula 301]

[0600] [Ar 301 ] xb11 -[(L 301 )xb1 -R 301 ] xb21 .

[0601] In formula 301,

[0602] Ar 301 and L 301 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0603] xb11 can be 1, 2 or 3,

[0604] xb1 can be an integer from 0 to 5.

[0605] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, -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 ),

[0606] xb21 can be an integer from 1 to 5, and

[0607] Q 301 To Q 303 can be independently compared with the reference Q 1 Same as described.

[0608] In the embodiment, in Formula 301, when xb11 is 2 or more, two or more Ar 301 can be connected to each other via a single bond.

[0609] In an embodiment, the host may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0610] [Formula 301-1]

[0611]

[0612] [Formula 301-2]

[0613]

[0614] In Formula 301-1 and Formula 301-2,

[0615] Ring A 301 To Ring A 304 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0616] X 301 Can be O, S, N-[(L 304 ) xb4 -R 304 ]、C(R 304 )(R 305 ) or Si(R 304 )(R 305 ),

[0617] xb22 and xb23 can each independently be 0, 1 or 2,

[0618] L 301 , xb1 and R 301 may all be the same as described herein,

[0619] L 302 To L 304 can be independently compared with the reference L 301 Same as described,

[0620] xb2 to xb4 may each independently be the same as described with reference to xb1, and

[0621] R 302 To R 305 and R 311 To R 314 can be independently compared with the reference R 301 Same as described.

[0622] In an embodiment, the host can include an alkaline earth metal complex, a late transition metal complex, or any combination thereof. For example, the host can include a Be complex (eg, compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0623] In an embodiment, the host may include one of compounds H1 to H128, 9,10-di(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), 9,10-di(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), 1,3-di(9-carbazolyl)benzene (mCP), and 1,3,5-tri(carbazolyl-9-yl)benzene (TCP), or any combination thereof:

[0624]

[0625]

[0626]

[0627]

[0628]

[0629]

[0630] In an embodiment, the host may include a silicon-containing compound, a phosphine oxide-containing compound, or any combination thereof.

[0631] The body may have various modifications. For example, the body may include only one kind of compound, or the body may include two or more different kinds of compounds.

[0632] [Phosphorescent dopant]

[0633] The emission layer may include the organic metal compound represented by Formula 1 as described in the specification as a phosphorescent dopant.

[0634] In an embodiment, when the organometallic compound represented by Formula 1 is included in the emission layer and the organometallic compound represented by Formula 1 is used as an auxiliary dopant, the emission layer may include a phosphorescent dopant.

[0635] In an embodiment, the phosphorescent dopant may include at least one transition metal as a central metal.

[0636] The phosphorescent dopant may include a monodentate ligand, a bidentate ligand, a tridentate ligand, a tetradentate ligand, a pentadentate ligand, a hexadentate ligand, or any combination thereof.

[0637] The phosphorescent dopant may be electrically neutral.

[0638] In an embodiment, the phosphorescent dopant may include an organometallic compound represented by Formula 401:

[0639] [Formula 401]

[0640] M(L 401 ) xc1 (L 402 ) xc2

[0641] [Formula 402]

[0642]

[0643] In equations 401 and 402,

[0644] M may be a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)),

[0645] L 401 may be a ligand represented by formula 402, and xc1 may be 1, 2 or 3, wherein when xc1 is 2 or greater, two or more L 401 can be the same or different from each other,

[0646] L 402 may be an organic ligand, xc2 may be 0, 1, 2, 3 or 4, and when xc2 is 2 or greater, two or more L 402 can be the same or different from each other,

[0647] X 401 and X 402 may each independently be nitrogen or carbon,

[0648] Ring A 401 and Ring A 402 can all be independently C 3 -C 60Carbocyclic or C 1 -C 60 Heterocyclic group,

[0649] 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=*',

[0650] X 403 and X 404 can each independently be a chemical bond (eg, a covalent bond or a coordination bond), O, S, N (Q 413 )、B(Q 413 )、P(Q 413 )、C(Q 413 )(Q 414 ) or Si(Q 413 )(Q 414 ),

[0651] Q 411 To Q 414 can be independently compared with the reference Q 1 Same as described,

[0652] R 401 and R 402 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C 1 -C 20 Alkyl, unsubstituted or substituted with at least one R 10a C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, -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 ),

[0653] Q 401 To Q 403 can be independently compared with the reference Q 1 Same as described,

[0654] xc11 and xc12 may each independently be an integer from 0 to 10, and

[0655] The * and *' in formula 402 both represent the binding site with M in formula 401.

[0656] In an embodiment, in Formula 402, X 401 It can be nitrogen, X 402 It can be carbon, or X 401 and X 402 It may all be nitrogen.

[0657] In the embodiment, in Formula 401, when xc1 is 2 or greater, L 401 Two or more of the two rings A 401 It can be optionally connected via T as a linker 402 Combined with each other, and L 401 Two or more of the two rings A 402 It can be optionally connected via T as a linker 403 Bind to each other (see Compound PD1 to Compound PD4 and Compound PD7). 402 and T 403 can be independently compared with the reference T 401 Same as described.

[0658] In formula 401, L 402 It can be an organic ligand. For example, L 402 It may include a halogen group, a diketone group (e.g., an acetylacetonate group), a carboxylic acid group (e.g., a picolinate group), -C(=O), an isonitrile group, a -CN group, a phosphorus-containing group (e.g., a phosphine group, a phosphite group, etc.), or any combination thereof.

[0659] The phosphorescent dopant may include, for example, one of Compound PD1 to Compound PD39 or any combination thereof:

[0660]

[0661]

[0662]

[0663] [Fluorescent dopant]

[0664] When the organometallic compound represented by Formula 1 is included in the emission layer and the organometallic compound represented by Formula 1 is used as an auxiliary dopant, the emission layer may further include a fluorescent dopant.

[0665] In an embodiment, when the organometallic compound represented by Formula 1 is included in the emission layer and the organometallic compound represented by Formula 1 is used as a phosphorescent dopant, the emission layer may further include an auxiliary dopant.

[0666] The fluorescent dopant and the auxiliary dopant may each independently include an aromatic amine compound, a styrylamine compound, a boron-containing compound, or any combination thereof.

[0667] In an embodiment, the fluorescent dopant and the auxiliary dopant may each independently include a compound represented by Formula 501:

[0668] [Formula 501]

[0669]

[0670] In formula 501,

[0671] Ar 501 , L 501 To L 503 , R 501 and R 502 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0672] xd1 to xd3 may each independently be 0, 1, 2 or 3, and

[0673] xd4 can be 1, 2, 3, 4, 5 or 6.

[0674] In the embodiment, in Formula 501, Ar 501 It may be a condensed ring group in which three or more monocyclic groups are condensed together (for example, anthracene groups, group or pyrene group).

[0675] In an embodiment, in equation 501, xd4 may be 2.

[0676] In an embodiment, the fluorescent dopant and the auxiliary dopant may each independently include one of compounds FD1 to FD37, DPVBi and DPAVBi, or any combination thereof:

[0677]

[0678]

[0679]

[0680]

[0681] [Delayed fluorescence material]

[0682] The emitting layer may include a delayed fluorescent material.

[0683] In the specification, the delayed fluorescent material may be selected from compounds capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0684] The delayed fluorescent material may include the fourth compound as described above.

[0685] The delayed fluorescent material included in the emission layer may serve as a host or as a dopant according to the types of other materials included in the emission layer.

[0686] In an embodiment, the difference between the triplet energy level of the delayed fluorescent material and the singlet energy level of the delayed fluorescent material may be greater than or equal to about 0 eV and less than or equal to about 0.5 eV. When the difference between the triplet energy level of the delayed fluorescent material and the singlet energy level of the delayed fluorescent material satisfies the above range, the up-conversion of the delayed fluorescent material from the triplet state to the singlet state may effectively occur, and thus, the luminous efficiency of the light emitting device 10 may be improved.

[0687] In an embodiment, the delayed fluorescent material may include: a C-type molecule including at least one electron donor (eg, a π-electron-rich C-type molecule such as a carbazole group); 3 -C 60 cyclic group) and at least one electron acceptor (e.g., a sulfoxide group, a cyano group, or a π-electron-poor nitrogen-containing C 1 -C 60 ring group); or a material containing C 8 -C 60 Polycyclic materials, in C 8 -C 60 In the polycyclic group, two or more ring groups are condensed while sharing boron (B).

[0688] Examples of the delayed fluorescent material may include at least one of Compound DF1 to Compound DF14:

[0689]

[0690]

[0691] [Quantum dot]

[0692] The emissive layer may include quantum dots.

[0693] In the specification, a quantum dot may be a crystal of a semiconductor compound, and may include any material capable of emitting light of various emission wavelengths according to the size of the crystal.

[0694] The diameter of the quantum dots may, for example, be in the range of about 1 nm to about 10 nm.

[0695] Quantum dots can be synthesized by a wet chemical process, a metal organic chemical vapor deposition process, a molecular beam epitaxy process, or any process similar to these processes.

[0696] The wet chemical process is a method that includes mixing a precursor material with an organic solvent and growing a quantum dot particle crystal. When the quantum dot particle crystal grows, the organic solvent naturally acts as a dispersant coordinated on the surface of the quantum dot particle crystal and controls the growth of the quantum dot particle crystal, so that the growth of the quantum dot particle crystal can be controlled by a process that is low in cost and can be more easily performed compared to a vapor deposition method such as metal organic chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE).

[0697] 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; or any combination thereof.

[0698] Examples of II-VI semiconductor compounds may include binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, 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 or MgZnS; a quaternary compound such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe or HgZnSTe; or any combination thereof.

[0699] Examples of III-V semiconductor compounds may include binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, or InSb; ternary compounds such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, or InPSb; quaternary compounds such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, or InAlPSb; or any combination thereof. In an embodiment, the III-V semiconductor compound may also include a Group II element. Examples of the Group III-V semiconductor compound also including the Group II element may include InZnP, InGaZnP, InAlZnP, and the like.

[0700] Examples of III-VI semiconductor compounds may include binary compounds such as GaS, GaSe, Ga 2 Se 3 、GaTe、InS、InSe、In 2 S 3 、In 2 Se 3 or InTe; ternary compounds such as InGaS 3 or InGaSe 3 ; or any combination thereof.

[0701] Examples of Group I-III-VI semiconductor compounds may include: ternary compounds such as AgInS, AgInS 2 、CuInS、CuInS 2 、CuGaO 2 、AgGaO 2 or AgAlO 2 ; or any combination thereof.

[0702] Examples of IV-VI semiconductor compounds may include: binary compounds such as SnS, SnSe, SnTe, PbS, PbSe or PbTe; ternary compounds such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe or SnPbTe; quaternary compounds such as SnPbSSe, SnPbSeTe or SnPbSTe; or any combination thereof.

[0703] Examples of Group IV elements or compounds may include: single element materials, such as Si or Ge; binary compounds, such as SiC or SiGe; or any combination thereof.

[0704] Each element included in the multi-element compound such as the binary compound, the ternary compound, and the quaternary compound may be present in the particle at a uniform concentration or at a non-uniform concentration.

[0705] In an embodiment, the quantum dot may have a single structure in which the concentration of each element in the quantum dot is uniform, or the quantum dot may have a core-shell structure. When the quantum dot has a core-shell structure, the material included in the core and the material included in the shell may be different from each other.

[0706] The shell of the quantum dot can be used as a protective layer to prevent chemical denaturation of the core to maintain semiconductor properties, and / or can be used as a charged layer to impart electrophoretic properties to the quantum dot. The shell can be a single layer or multiple layers. The interface between the core and the shell can have a concentration gradient in which the concentration of the material present in the shell decreases toward the core.

[0707] Examples of the shell of the quantum dot may include metal oxides, metalloid oxides, non-metal oxides, semiconductor compounds, or any combination thereof. Examples of metal oxides, metalloid oxides, or non-metal oxides may include: binary compounds such as SiO 2 、Al 2 O 3 、TiO 2 、ZnO、MnO、Mn 2 O 3 , Mn 3 O 4 , CuO, FeO, Fe 2 O 3 , Fe 3 O 4 , CoO, Co 3 O 4 or NiO; ternary compounds such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe2 O 4 or CoMn 2 O 4 ; or any combination thereof.

[0708] Examples of semiconductor compounds may include II-VI semiconductor compounds, III-V semiconductor compounds, III-VI semiconductor compounds, I-III-VI semiconductor compounds, IV-VI semiconductor compounds, or any combination thereof. For example, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0709] The full width at half maximum (FWHM) of the emission wavelength spectrum of the quantum dot can be equal to or less than about 45nm. For example, the FWHM of the emission wavelength spectrum of the quantum dot can be equal to or less than about 40nm. For example, the FWHM of the emission wavelength spectrum of the quantum dot can be equal to or less than about 30nm. Within these ranges, color purity or color reproducibility can be increased. The light emitted by the quantum dot can be emitted in all directions, so that the wide viewing angle can be improved.

[0710] In embodiments, the quantum dots may be in the form of spherical nanoparticles, pyramidal nanoparticles, multi-armed nanoparticles, cubic nanoparticles, nanotubes, nanowires, nanofibers, or nanoplates.

[0711] Since the energy band gap can be adjusted by controlling the size of the quantum dots, light with various wavelengths can be obtained from the quantum dot emission layer. Therefore, by using quantum dots of different sizes, a light-emitting device that emits light of various wavelengths can be realized. In an embodiment, the size of the quantum dots can be selected to emit red light, green light, and / or blue light. The size of the quantum dots can be configured to emit white light by combining light of various colors.

[0712] [Electron Transport Region in Intermediate Layer 130]

[0713] The electron transport region may have a structure consisting of a layer consisting of a single material, a structure consisting of layers including different materials, or a structure including a plurality of layers including different materials.

[0714] 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.

[0715] In an embodiment, 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 layers of each structure may be stacked from the emission layer in their corresponding stated order, but the structure of the electron transport region is not limited thereto.

[0716] The electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer in the electron transport region) may include a nitrogen-containing C 1 -C 60 Metal-free compounds of heterocyclic groups.

[0717] In an embodiment, the electron transport region may include a compound represented by Formula 601:

[0718] [Formula 601]

[0719] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 .

[0720] In formula 601,

[0721] Ar 601 and L 601 may be independently unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group,

[0722] xe11 can be 1, 2 or 3,

[0723] xe1 can be 0, 1, 2, 3, 4, or 5,

[0724] R 601 may be unsubstituted or substituted with at least one R 10a C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group, -Si(Q 601 )(Q 602 )(Q 603 )、-C(=O)(Q 601 )、-S(=O)2 (Q 601 ) or -P(=O)(Q 601 )(Q 602 ),

[0725] Q 601 To Q 603 can be independently compared with the reference Q 1 Same as described,

[0726] xe21 can be 1, 2, 3, 4, or 5, and

[0727] Ar 601 , L 601 and R 601 At least one of them may be independently unsubstituted or substituted with at least one R 10a The π-electron-poor nitrogen-containing C 1 -C 60 Ring group.

[0728] In an embodiment, in Formula 601, when xe11 is 2 or greater, two or more Ar 601 can be connected to each other via a single bond.

[0729] In the embodiment, in Formula 601, Ar 601 The anthracene group may be substituted or unsubstituted.

[0730] In an embodiment, the electron transport region may include a compound represented by Formula 601-1:

[0731] [Formula 601-1]

[0732]

[0733] In formula 601-1,

[0734] X 614 Can be N or C (R 614 ), X 615 Can be N or C (R 615 ), X 616 Can be N or C (R 616 ), X 614 To X 616 At least one of them can be N,

[0735] L 611 To L 613 can be independently compared with the reference L 601 Same as described,

[0736] xe611 to xe613 can each independently be the same as described with reference to xe1,

[0737] R 611 To R 613 can be independently compared with the reference R 601 Same as described, and

[0738] R 614 To R 616 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C 1 -C 60 Heterocyclic group.

[0739] In an embodiment, in Formula 601 and Formula 601-1, xe1 and xe611 to xe613 may each independently be 0, 1, or 2.

[0740] The electron transport region may include compounds ET1 to ET45, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq 3 , BAlq, TAZ and NTAZ or any combination thereof:

[0741]

[0742]

[0743]

[0744] The thickness of the electron transport region can be about to about For example, the thickness of the electron transport region can be in the range of about to about 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, the hole blocking layer, or the electron control layer may be independently in the range of about to about In the range of to about For example, the thickness of the buffer layer, the hole blocking layer, or the electron control layer can be independently about to about For example, the thickness of the electron transport layer can be about to about When the thickness of the buffer layer, the hole blocking layer, the electron control layer, the electron transport layer and / or the electron transport region is within these ranges, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage.

[0745] In addition to the above materials, the electron transport region (eg, the electron transport layer in the electron transport region) may further include a metal-containing material.

[0746] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex or any combination thereof. The metal ion of the alkali metal complex may be Li ion, Na ion, K ion, Rb ion or Cs ion, and the metal ion of the alkaline earth metal complex may be Be ion, Mg ion, Ca ion, Sr ion or Ba ion.

[0747] The ligands coordinated to the metal ion of the alkali metal complex or to the metal ion of the alkaline earth metal complex can each independently include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0748] For example, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) or compound ET-D2:

[0749]

[0750] The electron transport region may include an electron injection layer that facilitates electron injection from the second electrode 150. The electron injection layer may directly contact the second electrode 150.

[0751] The electron injection layer may have a structure consisting of a layer consisting of a single material, a structure consisting of layers including different materials, or a structure including a plurality of layers including different materials.

[0752] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0753] The alkali metals may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metals may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metals may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0754] The alkali metal-containing compound, alkaline earth metal-containing compound, and rare earth metal-containing compound may be oxides, halides (e.g., fluorides, chlorides, bromides, or iodides), or tellurides of alkali metals, alkaline earth metals, and rare earth metals, or any combination thereof.

[0755] The alkali metal-containing compound may include: alkali metal oxides such as Li 2 O, Cs 2 O, or K 2 O; alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, KI, or RbI; or any combination thereof. The alkaline earth metal-containing compound may include alkaline earth metal compounds (such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying the condition 0 < x < 1), Ba x Ca 1-x O (where x is a real number satisfying the condition 0 < x < 1)), etc. The rare earth metal-containing compound may include YbF 3 、ScF 3 、Sc 2 O 3 、Y 2 O 3 、Ce 2 O 3 、GdF 3 、TbF 3 、YbI 3 、ScI 3 、TbI 3 、or any combination thereof. In an embodiment, the rare earth metal-containing compound may include lanthanide metal tellurides. Examples of lanthanide metal tellurides may include LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La 2 Te 3 、Ce 2 Te 3 、Pr 2 Te 3 、Nd 2 Te 3 、Pm 2 Te 3 、Sm 2Te 3 、Eu 2 Te 3 , Gd 2 Te 3 , Tb 2 Te 3 、Dy 2 Te 3 、Ho 2 Te 3 , Er 2 Te 3 、Tm 2 Te 3 , Yb 2 Te 3 He Lu 2 Te 3 .

[0756] The alkali metal complexes, alkaline earth metal complexes and rare earth metal complexes may include an alkali metal ion, an alkaline earth metal ion or a rare earth metal ion and a ligand bound to the metal ion (e.g., hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene or any combination thereof).

[0757] The electron injection layer may be composed of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof as described above. In an embodiment, the electron injection layer may also include an organic material (e.g., a compound represented by Formula 601).

[0758] In an embodiment, the electron injection layer may be composed of an alkali metal compound (e.g., an alkali metal halide); or the electron injection layer may be composed of an alkali metal compound (e.g., an alkali metal halide) and an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof. For example, the electron injection layer may be a KI:Yb co-deposition layer, a RbI:Yb co-deposition layer, a LiF:Yb co-deposition layer, etc.

[0759] When the electron injection layer also includes an organic material, an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex or any combination thereof can be uniformly or non-uniformly dispersed in a matrix including the organic material.

[0760] The thickness of the electron injection layer can be about to about For example, the thickness of the electron injection layer can be about to about When the thickness of the electron injection layer is within any of the above ranges, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0761] [Second electrode 150]

[0762] The second electrode 150 may be located on the intermediate layer 130 having the structure as described above. The second electrode 150 may be a cathode as an electron injection electrode. The second electrode 150 may include a material having a low work function such as a metal, an alloy, a conductive compound, or any combination thereof.

[0763] In an embodiment, 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 transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0764] The second electrode 150 may have a single-layer structure or a multi-layer structure.

[0765] [Cover]

[0766] The light emitting device 10 may include a first capping layer outside the first electrode 110 and / or a second capping layer outside the second electrode 150. For example, the light emitting device 10 may have: a structure in which the first capping layer, the first electrode 110, the intermediate layer 130, and the second electrode 150 are stacked in the stated order; a structure in which the first electrode 110, the intermediate layer 130, the second electrode 150 and the second capping layer are stacked in the stated order; or a structure in which the first capping layer, the first electrode 110, the intermediate layer 130, the second electrode 150 and the second capping layer are stacked in the stated order.

[0767] Light generated in the emission layer of the intermediate layer 130 of the light emitting device 10 may pass through the first electrode 110 (which may be a semi-transmissive electrode or a transmissive electrode) and may be extracted toward the outside through the first cover layer. Light generated in the emission layer of the intermediate layer 130 of the light emitting device 10 may pass through the second electrode 150 (which may be a semi-transmissive electrode or a transmissive electrode) and may be extracted toward the outside through the second cover layer.

[0768] According to the principle of constructive interference, the first capping layer and the second capping layer can both increase the external emission efficiency. Therefore, the light extraction efficiency of the light emitting device 10 is increased, so that the light emitting efficiency of the light emitting device 10 can be improved.

[0769] In an embodiment, the first cap layer and the second cap layer may each include a material having a refractive index equal to or greater than about 1.6 (with respect to a wavelength of about 589 nm).

[0770] The first capping layer and the second capping layer may each independently be an organic capping layer including an organic material, an inorganic capping layer including an inorganic material, or an organic-inorganic composite capping layer including an organic material and an inorganic material.

[0771] At least one of the first cover layer and the second cover layer may independently include a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine-containing compound may each be optionally substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof.

[0772] In an embodiment, at least one of the first capping layer and the second capping layer may each independently include an amine-containing compound.

[0773] In an embodiment, at least one of the first capping layer and the second capping layer may each independently include the compound represented by Formula 201, the compound represented by Formula 202, or any combination thereof.

[0774] In an embodiment, at least one of the first cap layer and the second cap layer may each independently include one of compounds HT28 to HT33, one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0775]

[0776] [membrane]

[0777] The organic metal compound represented by Formula 1 may be included in various films. Therefore, in an embodiment, the film may include the organic metal compound represented by Formula 1. The film may be, for example, an optical member (or light control device) (e.g., a color filter, a color conversion member, a cover layer, a light extraction efficiency enhancement layer, a selective light absorption layer, a polarization layer, a quantum dot content layer, etc.), a light blocking member (e.g., a light reflection layer, a light absorption layer, etc.) or a protective member (e.g., an insulating layer, a dielectric layer, etc.).

[0778] [Electronic equipment]

[0779] The light emitting device may be included in various electronic devices. In an embodiment, the electronic device including the light emitting device may be a light emitting device, an authentication device, etc.

[0780] In addition to the light emitting device, the electronic device (e.g., light emitting device) may further include a color filter, a color conversion layer, or a color filter and a color conversion layer. The color filter and / or the color conversion layer may be located in at least one direction along which the light emitted from the light emitting device travels. In an embodiment, the light emitted from the light emitting device may be blue light, green light, or white light. The light emitting device may be the same as described herein. In an embodiment, the color conversion layer may include quantum dots.

[0781] The electronic device may include a first substrate, the first substrate may include sub-pixels, the color filter may include color filter regions respectively corresponding to the sub-pixels, and the color conversion layer may include color conversion regions respectively corresponding to the sub-pixels.

[0782] A pixel defining film (hereinafter, referred to as a 'pixel defining layer') may be disposed between sub-pixels to define each sub-pixel.

[0783] The color filter may further include color filter regions and light shielding patterns located between the color filter regions, and the color conversion layer may further include color conversion regions and light shielding patterns located between the color conversion regions.

[0784] The color filter region (or color conversion region) may include: a first region emitting a first color light; a second region emitting a second color light; and / or a third region emitting a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths from each other. For example, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. In an embodiment, the color filter region (or color conversion region) may include quantum dots. For example, the first region may include red quantum dots, the second region may include green quantum dots, and the third region may not include quantum dots. The quantum dots may be the same as described herein. The first region, the second region, and / or the third region may also each include a scatterer.

[0785] In an embodiment, the light emitting device may emit a first light, the first region may absorb the first light to emit a first first color light, the second region may absorb the first light to emit a second first color light, and the third region may absorb the first light to emit a third first color light. The first first color light, the second first color light, and the third first color light may have different maximum emission wavelengths from each other. For example, the first light may be blue light, the first first color light may be red light, the second first color light may be green light, and the third first color light may be blue light.

[0786] In addition to the light emitting device 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 any one of the source electrode and the drain electrode may be electrically connected to any one of the first electrode and the second electrode of the light emitting device.

[0787] The thin film transistor may further include a gate electrode, a gate insulating film, and the like.

[0788] The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, an oxide semiconductor, or the like.

[0789] The electronic device may further include a sealing portion for sealing the light emitting device. The sealing portion may be located between the color filter and the light emitting device and / or between the color conversion layer and the light emitting device. The sealing portion may allow light from the light emitting device to be extracted to the outside, and may simultaneously prevent ambient air and moisture from penetrating into the light emitting device. The sealing portion may be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion may be a thin film encapsulation layer including an organic layer and / or an inorganic layer. When the sealing portion is a thin film encapsulation layer, the electronic device may be flexible.

[0790] Depending on the purpose of the electronic device, in addition to the color filter and / or color conversion layer, various functional layers may also be included on the sealing portion. Examples of functional layers may include a touch screen layer, a polarization layer, etc. The touch screen layer may be a pressure-sensitive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer. The authentication device may be, for example, a biometric authentication device that authenticates an individual by using biometric information of a living body (e.g., a fingertip, a pupil, etc.).

[0791] In addition to the light emitting device as described above, the authentication device may also include a biometric information collector.

[0792] The electronic device can be applied to various displays, light sources, lighting, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notepads, electronic dictionaries, electronic game consoles, medical instruments (e.g., electronic thermometers, blood pressure meters, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasonic diagnostic devices or endoscope displays), fish finders, various measuring instruments, meters (e.g., meters for vehicles, aircraft and ships), projectors, etc.

[0793] [Electronic equipment]

[0794] Light emitting devices may be included in various electronic equipment.

[0795] In an embodiment, the electronic equipment including the light emitting device can be a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, indoor lighting, outdoor lighting, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a phone (such as a mobile phone), a tablet computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a microdisplay, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall including multiple displays stitched together, a theater screen, a stadium screen, a light therapy device, or a sign.

[0796] The light emitting device may have excellent effects in terms of light emitting efficiency and long life, and thus electronic equipment including the light emitting device may have characteristics such as high brightness, high resolution, and low power consumption.

[0797] [ Figure 2 and Figure 3 Description]

[0798] Figure 2 is a schematic cross-sectional view of a light emitting device as an example of an electronic device according to an embodiment.

[0799] Figure 2 The electronic device (eg, a light emitting device) may include a substrate 100, a thin film transistor (TFT), a light emitting device, and an encapsulation part 300 sealing the light emitting device.

[0800] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. The buffer layer 210 may be located on the substrate 100. The buffer layer 210 may prevent impurities from penetrating through the substrate 100 and may provide a flat surface on the substrate 100.

[0801] The TFT may be located on the buffer layer 210. The TFT may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0802] The active layer 220 may include an inorganic semiconductor such as silicon or polysilicon, an organic semiconductor, or an oxide semiconductor, and may include a source region, a drain region, and a channel region.

[0803] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 may be located on the active layer 220 , and the gate electrode 240 may be located on the gate insulating film 230 .

[0804] An interlayer insulating film 250 may be located on the gate electrode 240. The interlayer insulating film 250 may be located between the gate electrode 240 and the source electrode 260 to insulate the gate electrode 240 from the source electrode 260 and between the gate electrode 240 and the drain electrode 270 to insulate the gate electrode 240 from the drain electrode 270.

[0805] Source electrode 260 and drain electrode 270 may be located on interlayer insulating film 250. Interlayer insulating film 250 and gate insulating film 230 may be formed to expose source and drain regions of active layer 220, and source electrode 260 and drain electrode 270 may contact the exposed portions of the source and drain regions of active layer 220, respectively.

[0806] The TFT may be electrically connected to the light emitting device to drive the light emitting device, and is covered and protected by the 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 disposed on the passivation layer 280. The light emitting device may include a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0807] The first electrode 110 may be located on the passivation layer 280. The passivation layer 280 may not completely cover the drain electrode 270 and may expose a portion of the drain electrode 270. The first electrode 110 may be electrically connected to the exposed portion of the drain electrode 270.

[0808] A pixel defining layer 290 including an insulating material may be located on the first electrode 110. The pixel defining layer 290 may expose a selected region of the first electrode 110, and the intermediate layer 130 may be formed in the exposed region of the first electrode 110. The pixel defining layer 290 may be a polyimide or polyacrylic organic film. Figure 2 , but at least some of the intermediate layers 130 may extend beyond the upper portion of the pixel defining layer 290 to be provided in the form of a common layer.

[0809] The second electrode 150 may be located on the intermediate layer 130, and the capping layer 170 may be further located on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

[0810] The encapsulation part 300 may be located on the capping layer 170. The encapsulation part 300 may be located on the light emitting device to protect the light emitting device from moisture and / or oxygen. The encapsulation part 300 may include: an inorganic film including silicon nitride (SiN x ), silicon oxide (SiO x), indium tin oxide, indium zinc oxide or any combination thereof; organic films including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate, polyacrylic acid, etc.), epoxy resins (e.g., aliphatic glycidyl ether (AGE)), etc.) or any combination thereof; or any combination of inorganic films and organic films.

[0811] Figure 3 is a schematic cross-sectional view of a light emitting device as an example of an electronic device according to another embodiment.

[0812] Figure 3 An electronic device (eg, a light emitting device) and Figure 2 The electronic device of the present invention may be different in that at least the light shielding pattern 500 and the functional area 400 are also included on the packaging part 300. The functional area 400 may be a color filter area, a color conversion area, or a combination of a color filter area and a color conversion area. Figure 3 The light emitting device in the electronic device may be a series light emitting device.

[0813] [ Figure 4 Description]

[0814] Figure 4 is a schematic perspective view of an electronic equipment 1 including a light emitting device according to an embodiment.

[0815] The electronic equipment 1, which may be a device or apparatus for displaying a moving image or a still image, may be not only a portable electronic device (such as a mobile phone, a smart phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation device, or an ultra mobile PC (UMPC)), but also various products (such as a TV, a laptop computer, a monitor, a billboard, or an Internet of Things (IOT) device). The electronic equipment 1 may be such a product as above or a part thereof.

[0816] The electronic equipment 1 may be a wearable device such as a smart watch, a watch phone, a glasses-type display, or a head-mounted display (HMD) or a part of a wearable device. However, the disclosed embodiments are not limited thereto.

[0817] For example, the electronic equipment 1 may be a central information display (CID) on a dashboard, a central instrument panel or a dashboard of a vehicle, an interior mirror display replacing a side mirror of a vehicle, an entertainment display for a rear seat of a car, a display placed behind a front seat, a head-up display (HUD) mounted in the front of the vehicle or projected on a front windshield, or a computer generated hologram augmented reality head-up display (CGH AR HUD). For ease of explanation, Figure 4 An embodiment is shown in which the electronic equipment 1 is a smartphone.

[0818] The electronic equipment 1 may include a display area DA and a non-display area NDA outside the display area DA. The display device may realize an image through a two-dimensional array of pixels arranged in the display area DA.

[0819] The non-display area NDA is an area where an image is not displayed, and may surround the display area DA. A driver for supplying an electrical signal or power to a display device arranged in the display area DA may be arranged in the non-display area NDA. A pad, which is an area to which an electronic component or a printed circuit board can be electrically connected, may be arranged in the non-display area NDA.

[0820] In the electronic device 1, the length in the x-axis direction and the length in the y-axis direction may be different from each other. Figure 4 As shown in , the length in the x-axis direction may be shorter than the length in the y-axis direction. In an embodiment, the length in the x-axis direction may be the same as the length in the y-axis direction. In an embodiment, the length in the x-axis direction may be longer than the length in the y-axis direction. In addition, the z-axis direction is a direction perpendicular to the surface defined by the x-axis direction and the y-axis direction.

[0821] [ Figure 5 and FIG. 6A to FIG. 6C Description]

[0822] Figure 5 is a schematic perspective view of the exterior of a vehicle 1000 as electronic equipment including a light emitting device according to an embodiment. FIG. 6A to FIG. 6C Each is a schematic diagram of the interior of a vehicle 1000 according to an embodiment.

[0823] Reference Figure 5 , Fig. 6A , Figure 6B and Figure 6C The vehicle 1000 may refer to various devices for transporting a subject object to be transported (such as a person, an object, or an animal) from a departure point to a destination. Examples of the vehicle 1000 may include a vehicle traveling on a road or track, a ship moving on an ocean or a river, an airplane flying in the sky using the action of air, and the like.

[0824] The vehicle 1000 may travel on a road or a track. The vehicle 1000 may move in a given direction (e.g., a predetermined or selectable direction) according to the rotation of at least one wheel. For example, the vehicle 1000 may include a three-wheeled or four-wheeled vehicle, a construction machine, a two-wheeled vehicle, a prime mover device, a bicycle, and a train running on a track.

[0825] The vehicle 1000 may include a body having an interior and an exterior and a chassis as a part other than the body in which mechanical equipment required for driving is installed. The exterior of the body may include a front panel, a hood, a roof panel, a rear panel, a trunk, pillars provided at the boundaries between doors, etc. The chassis of the vehicle 1000 may include a power generation device, a power transmission device, a drive device, a steering device, a brake device, a suspension device, a transmission device, a fuel device, front and rear wheels, left and right wheels, etc.

[0826] The vehicle 1000 may include side window glasses 1100 , a front window glass 1200 , side view mirrors 1300 , a cluster 1400 , a center instrument panel 1500 , a passenger seat instrument panel 1600 , and a display device 2 .

[0827] The side window glass 1100 and the front window glass 1200 may be separated by pillars disposed between the side window glass 1100 and the front window glass 1200 .

[0828] The side window glass 1100 may be installed on the side of the vehicle 1000. In an embodiment, the side window glass 1100 may be installed in a door of the vehicle 1000. A plurality of side window glasses 1100 may be provided and may face each other. In an embodiment, the side window glass 1100 may include a first side window glass 1110 and a second side window glass 1120. In an embodiment, the first side window glass 1110 may be arranged adjacent to the cluster 1400, and the second side window glass 1120 may be arranged adjacent to the passenger seat instrument panel 1600.

[0829] In an embodiment, the side window glass 1100 may be spaced apart from each other in the x-axis direction or in a direction opposite to the x-axis direction. For example, the first side window glass 1110 and the second side window glass 1120 may be spaced apart from each other in the x-axis direction or in a direction opposite to the x-axis direction. The imaginary straight line L connecting the side window glass 1100 may extend in the x-axis direction or in a direction opposite to the x-axis direction. For example, the 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 in a direction opposite to the x-axis direction.

[0830] The front window glass 1200 may be installed on the front of the vehicle 1000. The front window glass 1200 may be between the side window glasses 1100 facing each other.

[0831] The side view mirror 1300 may provide a rear view of the vehicle 1000. The side view mirror 1300 may be mounted on the exterior of the vehicle body. In an embodiment, a plurality of side view mirrors 1300 may be provided. Any one of the side view mirrors 1300 may be disposed outside the first side window glass 1110. Another one of the side view mirrors 1300 may be disposed outside the second side window glass 1120.

[0832] Cluster 1400 may be arranged in front of the steering wheel. Cluster 1400 may include a tachometer, a speedometer, a coolant temperature gauge, a fuel gauge, a turn signal indicator, a high beam indicator, a warning light, a seat belt warning light, an odometer, a trip meter, an automatic shift selector indicator light, a door open warning light, an engine oil warning light, and / or a low fuel warning light.

[0833] The central instrument panel 1500 may include a control panel on which buttons for adjusting an audio device, an air conditioning device, and a seat heater are provided. The central instrument panel 1500 may be arranged on one side of the cluster 1400 .

[0834] The passenger seat instrument panel 1600 may be separated from the cluster 1400, and the central instrument panel 1500 is disposed between the passenger seat instrument panel 1600 and the cluster 1400. In an embodiment, the cluster 1400 may be disposed to correspond to a driver's seat (not shown), and the passenger seat instrument panel 1600 may be disposed to correspond to a passenger seat (not shown). In an embodiment, the cluster 1400 may be adjacent to the first side window glass 1110, and the passenger seat instrument panel 1600 may be adjacent to the second side window glass 1120.

[0835] In an embodiment, the display device 2 may include a display panel 3, and the display panel 3 may display an image. The display device 2 may be arranged inside the vehicle 1000. In an embodiment, the display device 2 may be arranged between side window glasses 1100 facing each other. The display device 2 may be arranged on at least one of the cluster 1400, the center instrument panel 1500, and the passenger seat instrument panel 1600.

[0836] The display device 2 may include an organic light emitting display device, an inorganic electroluminescent (EL) display device, a quantum dot display device, etc. Hereinafter, as the display device 2 according to the disclosed embodiment, the organic light emitting display device including the light emitting device according to the disclosure will be described as an example, but various types of display devices as described herein may be used as the disclosed embodiment.

[0837] Reference Fig. 6A , the display device 2 may be arranged on the central instrument panel 1500. In an embodiment, the display device 2 may display navigation information. In an embodiment, the display device 2 may display information about audio settings, video settings, or vehicle settings.

[0838] Reference Figure 6B , the display device 2 may be arranged on the cluster 1400. When the display device 2 is arranged on the cluster 1400, the cluster 1400 may display driving information and the like through the display device 2. For example, the cluster 1400 may digitally implement driving information. The digital cluster 1400 may digitally display vehicle information and driving information as images. For example, the needle and gauge of a tachometer and various warning lights or icons may be displayed through digital signals.

[0839] Reference Figure 6C , the display device 2 may be arranged on the passenger seat instrument panel 1600. The display device 2 may be embedded in the passenger seat instrument panel 1600 or may be arranged on the passenger seat instrument panel 1600. In an embodiment, the display device 2 arranged on the passenger seat instrument panel 1600 may display an image related to the information displayed on the cluster 1400 and / or the information displayed on the central instrument panel 1500. In an embodiment, the display device 2 arranged on the passenger seat instrument panel 1600 may display information different from the information displayed on the cluster 1400 and / or the information displayed on the central instrument panel 1500.

[0840] [Manufacturing method]

[0841] The corresponding layer included in the hole transport region, the emission layer, and the corresponding layer included in the electron transport region can be formed in the selected region by using a suitable method selected from vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing and / or laser induced thermal imaging.

[0842] When the layer constituting the hole transport region, the emission layer, and the layer constituting the electron transport region are formed by vacuum deposition, the deposition temperature may be about 100° C. to about 500° C., about 10 -8 To about 10 -3 Torr vacuum and approx. to about The vacuum deposition was performed at a deposition rate of .

[0843] [Definition of terms]

[0844] As used herein, the term "C 3 -C 60 A "carbocyclic group" may be a cyclic group consisting of only carbon atoms as ring atoms and having three to sixty carbon atoms. As used herein, the term "C 1 -C 60The "heterocyclic group" may be a ring group having one to sixty carbon atoms and further having at least one heteroatom other than carbon atoms as a ring-constituting atom. 3 -C 60 Carbocyclic and C 1 -C 60 The heterocyclic group may be a monocyclic group consisting of one ring or a polycyclic group in which two or more rings are condensed with each other. 1 -C 60 The heterocyclic group can have 3 to 61 ring-forming atoms.

[0845] As used herein, the term "cyclic group" may be a C 3 -C 60 Carbocyclic and C 1 -C 60 Heterocyclic group.

[0846] As used herein, the term "π-electron-rich C 3 -C 60 The "cyclic group" may be a cyclic group having 3 to 60 carbon atoms and may not include *-N=*' as a ring-forming part, such as the term "π-electron-poor nitrogen-containing C 1 -C 60 The "heterocyclic group" may be a heterocyclic group having 1 to 60 carbon atoms and may include *-N=*' as a ring-forming part.

[0847] In the embodiment, C 3 -C 60 The carbocyclic group may be: a T1 group; or a group in which two or more T1 groups are condensed with each other (for example, a cyclopentadiene group, an adamantane group, a norbornane group, a phenyl group, a pentalene group, a naphthalene group, an azulene group, an indacene group, an acenaphthene group, a phenanthrenyl group, an anthracene group, a fluoranthene group, a benzo[9,10]phenanthrene group, a pyrene group, a benzophenone group, a fluorene group, a spirobifluorene group, a benzofluorene group, an indenophenanthrene group or an indenoanthracene group),

[0848] C 1 -C 60The heterocyclic group may be: a T2 group; a group in which two or more T2 groups are condensed with each other; or a group in which at least one T2 group and at least one T1 group are condensed with each other (for example, a pyrrole group, a thiophene group, a furan group, an indole group, a benzoindole group, a naphthoindole group, an isoindole group, a benzisoindole group, a naphthoisoindole group, a benzothiorrole group, a benzothiophene group, a benzofuran group, a carbazole group, a dibenzothiorrole group, a dibenzothiophene group, a dibenzofuran group, an indenocarbazole group, an indolecarbazole group, a benzofuranocarbazole group, a benzothiophenocarbazole group, a benzothiorrolecarbazole group, a benzoindolecarbazole group, a benzocarbazole group, a benzonaphthofuran group, a benzonaphthothiophene group, a benzonaphthosilole group, a benzofuranodibenzofuran group, a benzofuranodibenzothiophene group, a ... phenodibenzothiophene group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzisoxazole group, benzothiazole group, benzisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzoquinoline group group, a benzoisoquinoline group, a quinoxaline group, a benzoquinoxaline group, a quinazoline group, a benzoquinazoline group, a phenanthroline group, a cinnoline group, a phthalazine group, a naphthyridine group, an imidazopyridine group, an imidazopyrimidine group, an imidazotriazine group, an imidazopyrazine group, an imidazopyridazine group, an azacarbazole group, an azafluorene group, an azadibenzosilole group, an azadibenzothiophene group, an azadibenzofuran group, etc.),

[0849] Pi-electron-rich C 3 -C 60 The cyclic group may be: a T1 group; a group in which two or more T1 groups are condensed with each other; a T3 group; a group in which two or more T3 groups are condensed with each other; or a group in which at least one T3 group and at least one T1 group are condensed with each other (e.g., C 3 -C 60a carbocyclic group, a 1H-pyrrole group, a thiol group, a borole group, a 2H-pyrrole group, a 3H-pyrrole group, a thiophene group, a furan group, an indole group, a benzoindole group, a naphthoindole group, an isoindole group, a benzoisoindole group, a naphthoisoindole group, a benzothiol group, a benzothiophene group, a benzofuran group, a carbazole group, a dibenzothiol group, a dibenzothiophene group, a dibenzofuran group, an indenocarbazole group, an indolecarbazole group, a benzofuranocarbazole group, a benzothiophenocarbazole group, a benzothiololcarbazole group, a benzoindolecarbazole group, a benzocarbazole group, a benzonaphthofuran group, a benzonaphthothiophene group, a benzonaphthothiol group, a benzofuranodibenzofurano group, a benzofuranodibenzothiophene group, a benzothiophenodibenzothiophene group, and the like),

[0850] π-electron-poor nitrogen-containing C 1 -C 60 The heterocyclic group may be: a T4 group; a group in which two or more T4 groups are condensed with each other; a group in which at least one T4 group and at least one T1 group are condensed with each other; a group in which at least one T4 group and at least one T3 group are condensed with each other; or a group in which at least one T4 group, at least one T1 group and at least one T3 group are condensed with each other (for example, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzisoxazole group group, benzothiazole group, benzisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzoquinoline group, benzoisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazoline group, benzoquinazoline group, phenanthroline group, cinnoline group, phthalazine group, naphthyridine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzosilole group, azadibenzothiophene group, azadibenzofuran group, etc.),

[0851] wherein the T1 group may be a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, a cyclooctane group, a cyclobutene group, a cyclopentene group, a cyclopentadiene group, a cyclohexene group, a cyclohexadiene group, a cycloheptene group, an adamantane group, a norbornane (or a bicyclo[2.2.1]heptane) group, a norbornene group, a bicyclo[1.1.1]pentane group, a bicyclo[2.1.1]hexane group, a bicyclo[2.2.2]octane group or a phenyl group,

[0852] The T2 group can be a furan group, a thiophene group, a 1H-pyrrole group, a thiol group, a borolide group, a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azathiol group, an azaborol group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a tetrazine group, a pyrrolidine group, an imidazolidinyl group, a dihydropyrrole group, a piperidine group, a tetrahydropyridine group, a dihydropyridine group, a hexahydropyrimidine group, a tetrahydropyrimidine group, a dihydropyrimidine group, a piperazine group, a tetrahydropyrazine group, a dihydropyrazine group, a tetrahydropyridazine group or a dihydropyridazine group,

[0853] The T3 group may be a furan group, a thiophene group, a 1H-pyrrole group, a thiole group or a borole group, and

[0854] The T4 group can be a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azathiol group, an azaborole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group or a tetrazine group.

[0855] As used herein, the terms "cyclic group", "C 3 -C 60 Carbocyclic group, "C 1 -C 60 Heterocyclic group", "π-electron-rich C 3 -C 60 Ring group" or "π-electron-poor nitrogen-containing C 1 -C 60 The term "heterocyclic group" may refer to a group condensed with any cyclic group, a monovalent group or a polyvalent group (e.g., a divalent group, a trivalent group, a tetravalent group, etc.) according to the structure of the formula using the corresponding term. For example, a "phenyl group" may be a benzo group, a phenyl group or a phenylene group, etc., which can be easily understood by a person of ordinary skill in the art according to the structure of the formula including the "phenyl group".

[0856] Unit Price C 3 -C 60 Carbocyclic or monovalent C 1 -C 60 Examples of heterocyclic groups may include C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic condensed heteropolycyclic group. 3 -C 60 Carbocyclic or divalent C 1 -C 60 Examples of heterocyclic groups may include C 3 -C 10 Cycloalkylene, C 1 -C 10 Heterocycloalkylene, C 3 -C 10 Cycloalkenylene, C 1 -C 10 Heterocycloalkenylene, C 6 -C 60 Arylene, C 1 -C 60 heteroarylene groups, divalent non-aromatic condensed polycyclic groups and divalent non-aromatic condensed heteropolycyclic groups.

[0857] As used herein, the term "C 1 -C 60 The term “alkyl” may be a linear or branched aliphatic saturated hydrocarbon monovalent group having one to sixty carbon atoms, and examples thereof may 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, isodecyl, sec-decyl, and tert-decyl. As used herein, the term “C 1 -C 60 The "alkylene group" may be a 1 -C 60 Alkyl is a divalent group of the same structure.

[0858] As used herein, the term "C 2 -C 60 The "alkenyl" may be in C 2 -C 60 The term "C" as used herein refers to a monovalent hydrocarbon group having at least one carbon-carbon double bond in the middle or at the end of the alkyl group, examples of which may include ethenyl, propenyl, and butenyl. 2 -C 60 The "alkenylene" may be a 2 -C 60 Alkenyl is a divalent group of the same structure.

[0859] As used herein, the term "C 2 -C 60 The "alkynyl" may be in C 2 -C 60 The term "C" as used herein refers to a monovalent hydrocarbon group having at least one carbon-carbon triple bond in the middle or at the end of the alkyl group, and examples thereof may include ethynyl, propynyl, and the like. 2 -C 60 The "alkynylene group" may be a 2 -C 60 Alkynyl is a divalent group of the same structure.

[0860] As used herein, the term "C 1 -C 60 The "alkoxy" may be -O(A 101 )(Among them, A 101 Can be C 1 -C 60 The monovalent group represented by an alkyl group may include a methoxy group, an ethoxy group, and an isopropoxy group.

[0861] As used herein, the term "C 3 -C 10 The term "cycloalkyl" may be a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and examples thereof may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]octyl. As used herein, the term "Cycloalkyl" may be a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and examples thereof may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]oc 3 -C 10 The "cycloalkylene" may be a 3 -C 10 Cycloalkyl is a divalent group of the same structure.

[0862] As used herein, the term "C 1 -C 10 The term "heterocycloalkyl" as used herein may be a monovalent cyclic group of 1 to 10 carbon atoms which further includes at least one heteroatom other than carbon atoms as a ring-forming atom, and examples thereof may include 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl, and tetrahydrothienyl. 1 -C 10 The "heterocycloalkylene" may be a 1 -C 10 Heterocycloalkyl is a divalent group of the same structure.

[0863] As used herein, the term "C 3 -C 10The term "cycloalkenyl" as used herein may be a non-aromatic monovalent cyclic group having three to ten carbon atoms and at least one carbon-carbon double bond in its ring, and examples thereof may include cyclopentenyl, cyclohexenyl, and cycloheptenyl. 3 -C 10 The cycloalkenylene group may be a 3 -C 10 Cycloalkenyl is a divalent group of the same structure.

[0864] As used herein, the term "C 1 -C 10 The "heterocycloalkenyl group" may be a monovalent cyclic group of 1 to 10 carbon atoms which further includes at least one heteroatom other than carbon atoms as a ring-forming atom in its ring structure and has at least one double bond. 1 -C 10 Examples of heterocycloalkenyl groups may include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothienyl. As used herein, the term “C 1 -C 10 The "heterocycloalkenylene" may be a 1 -C 10 Heterocycloalkenyl is a divalent group of the same structure.

[0865] As used herein, the term "C 6 -C 60 The term "aryl" may be a monovalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms. 6 -C 60 The "arylene group" may be a divalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms. 6 -C 60 Examples of the aryl group may include phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, peryl, pentaphenyl, heptaphenyl, tetraphenyl, peryl, hexyl, pentyl, rubidinyl, corynyl and ovalenyl. 6 -C 60 Aryl and C 6 -C 60 When the arylene groups each include two or more rings, the corresponding rings may be condensed with each other.

[0866] As used herein, the term "C 1 -C 60The term "heteroaryl" as used herein may be a monovalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms, the heterocyclic aromatic system further comprising at least one heteroatom as a ring-forming atom other than carbon atoms. 1 -C 60 The "heteroarylene group" may be a divalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms, the heterocyclic aromatic system further comprising at least one heteroatom as a ring-forming atom in addition to carbon atoms. 1 -C 60 Examples of heteroaryl groups may include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, benzoquinolyl, isoquinolyl, benzoisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthrolinyl, phthalazinyl, and naphthyridinyl. 1 -C 60 Heteroaryl and C 1 -C 60 When the heteroarylene group includes two or more rings, the corresponding rings may be condensed with each other.

[0867] The term "monovalent non-aromatic condensed polycyclic radical" as used herein can be a monovalent group having two or more rings condensed to each other, only carbon atoms (e.g., having 8 to 60 carbon atoms) as ring atoms and non-aromatic in its entire molecular structure. Examples of monovalent non-aromatic condensed polycyclic radicals can include indenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, indenophenanthryl and indenoanthryl. The term "divalent non-aromatic condensed polycyclic radical" as used herein can be a divalent group having the same structure as the above-mentioned monovalent non-aromatic condensed polycyclic radical.

[0868] The term “monovalent non-aromatic condensed heteropolycyclic group” as used herein may be a monovalent group having two or more rings condensed to each other, further including at least one heteroatom other than carbon atoms (for example, having 1 to 60 carbon atoms) as a ring-constituting atom, and having non-aromaticity in its entire molecular structure. Examples of the monovalent non-aromatic condensed heteropolycyclic group may include a pyrrolyl group, a thienyl group, a furyl group, an indolyl group, a benzindolyl group, a naphthoindolyl group, an isoindolyl group, a benzisoindolyl group, a naphthoisoindolyl group, a benzothioyl group, a benzofuranyl group, a carbazolyl group, a dibenzothioyl group, a dibenzothioyl group, a dibenzofuranyl group, an azacarbazolyl group, an azafluorenyl group, an azadibenzothioyl group, an azadibenzothioyl group, an azadibenzofuranyl group, a pyrazolyl group, an imidazolyl group, a triazolyl group, a tetrazolyl group, an oxazolyl group, an isoxazolyl group, a thiazolyl group, an isothiazolyl group, an oxadiazolyl group, a thiadiazolyl group The term "divalent non-aromatic condensed heteropolycyclic group" as used herein may be a divalent group having the same structure as the monovalent non-aromatic condensed heteropolycyclic group.

[0869] As used herein, the term "C 6 -C 60 The "aryloxy" may be -O(A 102 )(Among them, A 102 Can be C 6 -C 60 The term "C 6 -C 60 The "arylthio" group can be -S(A 103 )(Among them, A 103 Can be C 6 -C 60 A group represented by an aryl group.

[0870] As used herein, the term "C 7 -C 60 The "arylalkyl" group may be -(A 104 )(A 105 )(Among them, A 104 Can be C 1 -C 54 Alkylene, A 105 Can be C 6 -C59 The term "C 2 -C 60 "Heteroarylalkyl" can be -(A 106 )(A 107 )(Among them, A 106 Can be C 1 -C 59 Alkylene, A 107 Can be C 1 -C 59 A group represented by a heteroaryl group.

[0871] In the specification, the group "R 10a " can be:

[0872] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0873] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl, C 2 -C 60 Heteroarylalkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy;

[0874] Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl, C 2 -C 60 Heteroarylalkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O) 2 (Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 heteroarylalkyl; or

[0875] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32).

[0876] In the manual, Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C alkoxy, phenyl, biphenyl or any combination thereof 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroarylalkyl.

[0877] The term "heteroatom" as used herein may be any atom other than a carbon atom or a hydrogen atom. Examples of heteroatoms may include O, S, N, P, Si, B, Ge, Se, and any combination thereof.

[0878] The term “third row transition metal” as used herein may be hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), or the like.

[0879] In the specification, "Ph" means phenyl, "Me" means methyl, "Et" means ethyl, and "tert-Bu" or "Bu t ” refers to tert-butyl, and “OMe” refers to methoxy.

[0880] As used herein, the term "biphenyl" may be "phenyl substituted with phenyl". For example, "biphenyl" may be a phenyl having C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0881] As used herein, the term "terphenyl" may be a "phenyl group substituted with a biphenyl group". For example, a "terphenyl group" may be a phenyl group substituted with a C 6 -C 60 Aryl C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0882] Unless otherwise defined, the symbols *, *', *", and *'" as used herein all refer to the binding sites to adjacent atoms in the corresponding formula or moiety.

[0883] In the specification, the terms "x-axis", "y-axis", and "z-axis" are not limited to the three axes in an orthogonal coordinate system (e.g., a Cartesian coordinate system), and can be interpreted in a broader sense than the three axes in the above-mentioned orthogonal coordinate system. For example, the x-axis, y-axis, and z-axis can describe axes that are orthogonal to each other, or can describe axes in different directions that are not orthogonal to each other.

[0884] Hereinafter, the compound according to the embodiment and the light emitting device according to the embodiment will be described in detail with reference to the following synthesis examples and examples. The phrase "using B instead of A" used in describing the synthesis examples means using the same molar equivalent of B instead of the same molar equivalent of A.

[0885] [Synthesis examples and examples]

[0886] Synthesis Example 1: Synthesis of Compound 1

[0887]

[0888] All reactions were carried out under anhydrous nitrogen atmosphere.

[0889] 1,3-di-tert-butyl-5-iodobenzene (10.0 g, 31.6 mmol), mesitylene (6.6 mL, 47.8 mmol) and 3-chloroperoxybenzoic acid (mCBPA) (6.9 g, 39.8 mmol) were dissolved in 80 mL of dichloromethane. The reaction solution was cooled to 0 ° C and trifluoromethanesulfonic acid (7.0 mL, 79.6 mmol) was added dropwise thereto. After the temperature was raised to room temperature, the resulting mixture was stirred for 2 hours, and the solvent was completely removed. A small amount of diethyl ether was added thereto, and the mixture was stirred and filtered. The obtained substance ((3,5-di-tert-butylphenyl) (mesitylene) iodonium trifluoromethanesulfonate) was used in subsequent reactions.

[0890] IM-1 (7.2 g, 14.2 mmol), (3,5-di-tert-butylphenyl)(mesityl)iodonium trifluoromethanesulfonate) (8.3 g, 14.2 mmol) and copper acetate (Cu(OAc) 2) (0.18 g, 0.6 mmol) was mixed in 50 mL of dimethylformamide (0.25 M) (DMF), followed by reflux at 100° C. for 14 hours. The solvent was removed under reduced pressure, and the resulting substance was subjected to silica gel column chromatography (eluent: dichloromethane:acetone, volume ratio of 16:1) to obtain IM-2. Yield: 80% (9.6 g, 11.4 mmol).

[0891] IM-2 (9.0 g, 10.6 mmol), dichloro(1,5-cyclooctadiene)-platinum(II) (Pt(COD)Cl 2 ) (4.0 g, 10.6 mmol) and sodium acetate (NaOAc) (2.6 g, 31.8 mmol) were added to 480 mL of DMF (0.04 M). The mixture was heated at 155 °C under N 2 After refluxing in an atmosphere for 15 h and removing all solvents under reduced pressure, the mixture was stirred using CH 2 Cl 2 The combined organic phases were washed with water and then purified by using anhydrous MgSO 4 Dried, filtered and concentrated. The residue was filtered by silica gel column chromatography (eluent: dichloromethane: hexane, volume ratio 1:1) to obtain the desired IM-3 as a yellow solid. Yield: 45% (4.2 g, 4.8 mmol).

[0892] KMnO 4 (3.2 g, 20.2 mmol) was added to the obtained IM-3 to obtain IM-4 (2.0 g, yield: 47%), and Br 2 (1.5 g, 18 mmol) was added to the obtained IM-3 to obtain IM-5 (2.3 g, yield: 55%), and IM-4 and IM-5 were mixed into Cu(OAc) 2 (0.18 g, 0.6 mmol) and 100 mL of dimethylformamide (DMF) (0.04 M), followed by reflux at 150 °C for 13 h. All solvents were removed under reduced pressure, and the mixture was heated to 40 °C by using CH 2 Cl 2 The combined organic phases were washed with water and then purified by using anhydrous MgSO 4 Dried, filtered and concentrated. The residue was filtered by silica gel column chromatography (eluent: dichloromethane:hexane, volume ratio 3:1) to obtain the desired compound 1 as a yellow solid.

[0893] Compounds synthesized according to the synthesis examples 1H NMR and MS / FAB are shown in Table 1. Those skilled in the art can easily recognize synthetic methods of compounds other than the compounds synthesized in the above synthetic examples by referring to the synthetic routes and source materials.

[0894] [Table 1]

[0895]

[0896] Evaluation Example 1

[0897] The T of compound 1 was evaluated by DFT method (B3LYP with LANL2DZ for Pt and 6-311G (d, p) for C, H, N, O) using Gaussian quantum chemical calculation program and ADF program. 1 Energy level (eV), lowest triplet excited state-ground state spin-orbit coupling ( 0 |H SOC |T 1 >) and excited state lifetime (1 / kph , μs), and the results are shown in Table 2.

[0898] [Table 2]

[0899]

[0900]

[0901]

[0902]

[0903] It is confirmed from Table 2 that compared with the reference compound, Compounds 1 to 6 have higher T1 energy levels, higher spin-orbit coupling, and shorter excited state lifetimes. Therefore, when Compounds 1 to 6 are applied to light-emitting devices, the lifetime and efficiency of the light-emitting devices can be improved.

[0904] [Example 1]

[0905] As the anode, Corning's 15Ω / cm 2 The ITO glass substrate was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonically treated with isopropyl alcohol and pure water for 5 minutes each, and cleaned by exposure to ultraviolet rays and ozone for 30 minutes.The ITO glass substrate was set to a vacuum deposition apparatus.

[0906] HAT-CN (1,4,5,8,9,12-hexaazatriphenylene hexacarbonitrile) and NPB (N,N'-bis(naphthalene-1-yl)-N,N'-bis(phenyl)benzidine) are co-deposited on a substrate in a vacuum to form a​ The hole injection layer was formed into a hole injection layer having a thickness of . In the hole injection layer, the weight ratio of HAT-CN to NPB was adjusted to 0.6:9.4. NPB was vacuum deposited on the hole injection layer to form a The hole transport layer has a thickness of .

[0907] A mixed host of o-CBP (2'-bis(9H-carbazole-9-yl)biphenyl) and mSiCzTrz (9-(4-phenyl-6-(3-(triphenylsilyl)phenyl)-1,3,5-triazine-2-yl)-9H-carbazole) and compound 1 as a dopant were co-deposited on the hole transport layer to form a Based on 100 wt % of the emission layer, the amount of Compound 1 was 10 wt %, and the weight ratio of mSiCzTrz to o-CBP was adjusted to 3:7.

[0908] TPBi (2,2',2"-(1,3,5-benzenetriyl)-tris(1-phenyl-1-H-benzimidazole)) is deposited on the emission layer to form a An alkali metal halide (LiF) is deposited on the electron transport layer to form a An electron injection layer having a thickness of , and Al is vacuum deposited on the electron injection layer to form a A LiF / Al cathode with a thickness of is formed, thereby completing the manufacture of the light-emitting device.

[0909]

[0910] Comparative Example 1

[0911] A light emitting device was manufactured in the same manner as in Example 1, except that a reference compound shown in Table 3 was used as a dopant instead of Compound 1 when forming the emission layer.

[0912] Evaluation Example 2

[0913] The 1000 cd / m 2 The brightness decreases with time (as the device lifetime) and the results are shown in Figure 7 After measuring the efficiency of the light emitting device while changing the brightness, the normalized efficiency with respect to the brightness is calculated, and the results are shown in Figure 8 Each data is measured by using Keithley SMU236 and brightness meter PR650.

[0914] The 1000 cd / m2 brightness of the light emitting devices manufactured in Example 1 and Comparative Example 1 was measured using a Keithley SMU236 and a luminance meter PR650. 2The driving voltage (V), luminous efficiency (cd / A), color conversion efficiency (cd / A / y), maximum emission wavelength (nm) and device life (h) under , and the results are shown in Table 3. In Table 3, the device life (T 90 ) is a measure of the time (h) it takes until the brightness drops to 90% of the initial brightness.

[0915] [Table 3]

[0916]

[0917]

[0918]

[0919] from Figure 7 and Figure 8 It was confirmed that the light emitting device of Example 1 had a better lifespan and a small decrease in efficiency associated with an increase in brightness, compared with the light emitting device of Comparative Example 1.

[0920] It is confirmed from Table 3 that the light emitting device of Example 1 has excellent light emitting efficiency, color conversion efficiency, and lifespan compared with the light emitting device of Comparative Example 1.

[0921] By using the organic metal compound, a light emitting device having lower driving voltage, improved color purity and luminous efficiency, and longer lifespan, and high-quality electronic devices including the light emitting device can be manufactured.

[0922] Embodiments have been disclosed herein, and although terms are employed, they are used and are to be interpreted in a general and descriptive sense only and not for purposes of limitation. In some cases, unless otherwise specifically indicated, as will be apparent to one of ordinary skill in the art, features, characteristics, and / or elements described in conjunction with embodiments may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, it will be understood by one of ordinary skill in the art that various changes in form and detail may be made without departing from the spirit and scope of the disclosure.

Claims

1. A light emitting device, comprising: a first electrode; a second electrode, facing the first electrode; an intermediate layer between the first electrode and the second electrode and including an emission layer; and An organometallic compound represented by Formula 1: [Formula 1] Among them, in formula 1, T1 is a sp 3 Elements of hybrid orbitals, M1 and M2 are each independently platinum, palladium, copper, silver, gold, rhodium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium or thulium, X 11 To X 14 and X 21 To X 24 are independently C or N, Cyclo 11 To Ring CY 14 and CY 21 To Ring CY 24 are independently C5-C 30 Carbocyclic or C1-C 30 Heterocyclic group, L 11 To L 13 and L 21 To L 23 are independently single bonds, *-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 *' both indicate the binding sites with adjacent atoms. n11 to n13 and n21 to n23 are each independently an integer from 0 to 5, When n11 is 0, there is no *-(L 11 ) n11 -*', When n12 is 0, there is no *-(L 12 ) n12 -*', When n13 is 0, there is no *-(L 13 ) n13 -*', When n21 is 0, there is no *-(L 21 ) n21 -*', When n22 is 0, there is no *-(L 22 ) n22 -*', When n23 is 0, there is no *-(L 23 ) n23 -*', R 11 To R 14 , R 21 To R 24 , R 1a and R 1b are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C1-C 60 Alkylthio, unsubstituted or substituted with at least one R 10a C3-C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C1-C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C6-C 60 arylthio, -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), a11 to a14 and a21 to a24 are each independently an integer from 1 to 20, R with quantity a11 11 , the number of R is a12 12 , the number of R is a13 13 , the number of R is a14 14 , the number of R is a21 21 , the number of R is a22 22 , the number of R is a23 23 , the number of R is a24 24 , R 1a and R 1b Two or more adjacent groups in the group may be optionally combined with each other to form a group which is unsubstituted or substituted with at least one R 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C1-C 60 Heterocyclic group, R 10a yes: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl, C2-C 60 Heteroarylalkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 )、-P(=O)(Q 11 )(Q 12 ) or a combination thereof C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy; Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl, C2-C 60 Heteroarylalkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O)2(Q 21 )、-P(=O)(Q 21 )(Q 22 ) or a combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl or C2-C 60 heteroarylalkyl; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 are independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C4 alkoxy, phenyl, biphenyl or a combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C7-C 60 Arylalkyl or C2-C 60 Heteroarylalkyl.

2. The light-emitting device according to claim 1, further comprising a second compound, a third compound, a fourth compound or a combination thereof, The second compound includes at least one π-electron-poor nitrogen-containing C1-C 60 The third compound includes a group represented by Formula 3, and the fourth compound is a delayed fluorescence compound, wherein: The organometallic compound, the second compound, the third compound and the fourth compound are different from each other: [Formula 3] Among them, in formula 3, Cyclo 71 and CY 72 Each is independently a π-electron-rich C3-C 60 a cyclic group or a pyridine group, X 71 is: a single bond; or a linking group comprising O, S, N, B, C, Si or a combination thereof, and * represents a bonding position with atoms included in the remaining parts other than Formula 3 in the third compound. 3 . An electronic device comprising the light emitting device according to claim 1 . 4 . An electronic equipment comprising the light emitting device according to claim 1 .

5. An organic metal compound, the organic metal compound is represented by Formula 1: [Formula 1] in, In formula 1, T1 is a sp 3 Elements of hybrid orbitals, M1 and M2 are each independently platinum, palladium, copper, silver, gold, rhodium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium or thulium, X 11 To X 14 and X 21 To X 24 are independently C or N, Cyclo 11 To Ring CY 14 and CY 21 To Ring CY 24 are independently C5-C 30 Carbocyclic or C1-C 30 Heterocyclic group, L 11 To L 13 and L 21 To L 23 are independently single bonds, *-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 *' both indicate the binding sites with adjacent atoms. n11 to n13 and n21 to n23 are each independently an integer from 0 to 5, When n11 is 0, there is no *-(L 11 ) n11 -*', When n12 is 0, there is no *-(L 12 ) n12 -*', When n13 is 0, there is no *-(L 13 ) n13 -*', When n21 is 0, there is no *-(L 21 ) n21 -*', When n22 is 0, there is no *-(L 22 ) n22 -*', When n23 is 0, there is no *-(L 23 ) n23 -*', R 11 To R 14 , R 21 To R 24 , R 1a and R 1b are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a C1-C 60 Alkylthio, unsubstituted or substituted with at least one R 10a C3-C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a C1-C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a C6-C 60 arylthio, -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), a11 to a14 and a21 to a24 are each independently an integer from 1 to 20, R with quantity a11 11 , the number of R is a12 12 , the number of R is a13 13 , the number of R is a14 14 , the number of R is a21 21 , the number of R is a22 22 , the number of R is a23 23 , the number of R is a24 24 , R 1a and R 1b Two or more adjacent groups in the group may be optionally combined with each other to form a group which is unsubstituted or substituted with at least one R 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C1-C 60 Heterocyclic group, R 10a yes: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl, C2-C 60 Heteroarylalkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 )、-P(=O)(Q 11 )(Q 12 ) or a combination thereof C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy; Unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl, C2-C 60 Heteroarylalkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O)2(Q 21 )、-P(=O)(Q 21 )(Q 22 ) or a combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl or C2-C 60 heteroarylalkyl; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 are independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C4 alkoxy, phenyl, biphenyl or a combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group, C7-C 60 Arylalkyl or C2-C 60 Heteroarylalkyl.

6. The organometallic compound according to claim 5, wherein T1 is carbon, silicon or germanium.

7. The organometallic compound according to claim 5, wherein R 11 To R 14 and R 21 To R 24 Are independently: Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl or C1-C 20 Alkoxy; All are substituted with deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 10 C1-C1 alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidyl, or a combination thereof 20 Alkyl or C1-C 20 Alkoxy; Unsubstituted or substituted with 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, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C1-C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -O(Q 31 )、-S(Q 31 )、-Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 )、-P(=O)(Q 31 )(Q 32 ) or a combination thereof, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C1-C 10 Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthryl, pyrenyl, yl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl or azadibenzothiorolyl; 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 are independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; or unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C4 alkoxy, phenyl, biphenyl or a combination thereof 60 Carbocyclic or C1-C 60 Heterocyclic group.

8. The organometallic compound according to claim 5, wherein In formula 1, n12 and n22 are both 0, Depend on The moieties represented are each independently a moiety represented by one of formula CY1(1) to formula CY1(11), Depend on The moieties represented are each independently a moiety represented by one of formula CY2(1) to formula CY2(13), Depend on The moieties represented are each independently a moiety represented by one of formula CY3(1) to formula CY3(25), and Depend on The moieties represented are independently moieties represented by one of formula CY4(1) to formula CY4(29): Among them, in Formulas CY1(1) to CY1(11), Formulas CY2(1) to CY2(13), Formulas CY3(1) to CY3(25) and Formulas CY4(1) to CY4(29), 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 ), T 32 is C(Y 31 ), N or Si(Y 31 ), Z 11 To Z 17 are independently as R in Formula 1 11 As defined, Z 21 To Z 26 , Y 21 and Y 22 are independently as R in Formula 1 12 As defined, Z 31 To Z 36 , Y 31 and Y 32 are independently as R in Formula 1 13 As defined, Z 41 To Z 47 are independently as R in Formula 1 14 As defined, * indicates the binding site with M1 or M2 in Formula 1, *' represents the L in formula 1 11 or L 21 The binding position of *" indicates the binding site with T1 in Formula 1, and *"' indicates that L in formula 1 13 or L 23 The combination position.

9. The organometallic compound according to claim 5, wherein The organometallic compound is represented by formula 1-1: [Formula 1-1] Among them, in formula 1-1, T1, M1 and M2 are all defined as in Formula 1, X 112 is C(R 112 ) or N, X 113 is C(R 113 ) or N, X 114 is C(R 114 ) or N, X 115 is C(R 115 ) or N, X 121 is C(R 121 ) or N, X 122 is C(R 122 ) or N, X 123 is C(R 123 ) or N, X 131 is C(R 131 ) or N, X 132 is C(R 132 ) or N, X 133 is C(R 133 ) or N, X 134 is C(R 134 ) or N, X 135 is C(R 135 ) or N, X 136 is C(R 136 ) or N, X 141 is C(R 141 ) or N, X 142 is C(R 142 ) or N, X 143 is C(R 143 ) or N, X 144 is C(R 144 ) or N, X 212 is C(R 212 ) or N, X 213 is C(R 213 ) or N, X 214 is C(R 214 ) or N, X 215 is C(R 215 ) or N, X 221 is C(R 221 ) or N, X 222 is C(R 222 ) or N, X 223 is C(R 223 ) or N, X 231 is C(R 231 ) or N, X 232 is C(R 232 ) or N, X 233 is C(R 233 ) or N, X 234 is C(R 234 ) or N, X 235 is C(R 235 ) or N, X 236 is C(R 236 ) or N, X 241 is C(R 241 ) or N, X 242 is C(R 242 ) or N, X 243 is C(R 243 ) or N, X 244 is C(R 244 ) or N, R 111 To R 115 are independently as R in Formula 1 11 As defined, R 121 To R 123 are independently as R in Formula 1 12 As defined, R 131 To R 136 are independently as R in Formula 1 13 As defined, R 141 To R 144 are independently as R in Formula 1 14 As defined, R 211 To R 215 are independently as R in Formula 1 21 As defined, R 221 To R 223 are independently as R in Formula 1 22 As defined, R 231 To R 236 are independently as R in Formula 1 23 As defined, R 241 To R 244 are independently as R in Formula 1 24 As defined, R 111 To R 115 , R 121 To R 123 , R 131 To R 136 , R 141 To R 144 , R 211 To R 215 , R 221 To R 223 , R 231 To R 236 and R 241 To R 244 Two or more adjacent groups in the group may be optionally combined with each other to form a group which is unsubstituted or substituted with at least one R 10a C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a C1-C 60 a heterocyclic group, and R 10a As defined in Eq.

1.

10. The organometallic compound according to claim 5, wherein The organometallic compound is one of Compound 1 to Compound 6:

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