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

Abstract

The invention provides a light emitting device and an organometallic compound. The light emitting device includes a first electrode; a second electrode facing the first electrode; an interlayer between the first electrode and the second electrode and including an emission layer; and an organometallic compound represented by Formula 1. An electronic device and an electronic equipment including the light emitting device are also provided. A detailed description of Formula 1 is provided in the specification.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2024-0121779, filed on September 6, 2024, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

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

[0004] Among light-emitting devices, self-emitting devices have a wide viewing angle, appropriately high contrast, short response time, and excellent or appropriate characteristics in terms of brightness, driving voltage, and / or response speed.

[0005] In the example, the light-emitting device may have a structure in which a first electrode is disposed on a substrate, and a hole transport region, an emitter layer, an electron transport region, and a second electrode are sequentially disposed on the first electrode. Holes supplied from the first electrode move toward the emitter layer through the hole transport region, and electrons supplied from the second electrode move toward the emitter layer through the electron transport region. Charge carriers (such as holes and electrons) recombine in the emitter layer to generate excitons. Excitons transition from an excited state to a ground state, thereby generating light. Summary of the Invention

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

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

[0008] According to one or more embodiments, the light-emitting device includes a first electrode.

[0009] The second electrode facing the first electrode.

[0010] An interlayer disposed between the first electrode and the second electrode and including an emission layer, and

[0011] Organometallic compounds represented by Formula 1.

[0012] Formula 1

[0013]

[0014] In Equation 1,

[0015] M can be platinum (Pt), palladium (Pd), cobalt (Co), gold (Au), nickel (Ni), silver (Ag), or copper (Cu).

[0016] CY1, CY2, and CY4 can each be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

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

[0018] L1 to L3 can each be an independent single bond (e.g., a single covalent bond), *-N(R5)-*', *-B(R5)-*', *-P(R5)-*', *-C(R5)(R6)-*', *-Si(R5)(R6)-*', *-Ge(R5)(R6)-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', or *-C(=S)-*', where * and *' each indicate the bonding site with an adjacent atom.

[0019] T1 can be O, S, or Se.

[0020] T2 and T3 can each be independently a single bond (e.g., a single covalent bond), O, S, or Se.

[0021] At least one of T2 and T3 may not be a single bond (e.g., may not be a single covalent bond).

[0022] a1, a2, and a4 can each be an integer selected from 0 to 10 independently.

[0023] R1, R2, R 31 R 32 R4 through R6 can each be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60Heterocyclic groups, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2),

[0024] Optional, R 31 and R 32 They can bond to each other to form unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0025] R 10a Possible forms:

[0026] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone.

[0027] Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 ) or any combination thereof,

[0028] Each of the following C3-Cs that are not substituted or are substituted by: 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 ) or any combination thereof, or

[0029] -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 ) or -P(=O)(Q 31 (Q) 32 ),and

[0030] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each can be independently hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; or each unsubstituted or replaced by deuterium, -F, cyano, C1-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups.

[0031] According to one or more embodiments, electronic devices and electronic apparatuses, each including a light-emitting device, are provided.

[0032] According to one or more embodiments, an organometallic compound represented by Formula 1 is provided. Attached Figure Description

[0033] The above and other aspects, features, and advantages of certain embodiments of this disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0034] Figure 1 A schematic cross-sectional view of the structure of a light-emitting device according to one or more embodiments;

[0035] Figure 2 A schematic cross-sectional view of the structure of an electronic device according to one or more embodiments;

[0036] Figure 3 A schematic cross-sectional view of the structure of an electronic device according to one or more other embodiments;

[0037] Figure 4 A schematic perspective view of an electronic device according to one or more embodiments;

[0038] Figure 5 This is a schematic diagram of the exterior of a vehicle comprising an electronic device including a light-emitting device, according to one or more embodiments; and

[0039] Figures 6A to 6C Each is a schematic diagram of the interior of a vehicle according to one or more embodiments. Detailed Implementation

[0040] One or more embodiments illustrated in the accompanying drawings will now be explained in more detail with reference to their examples, wherein like reference numerals refer to like elements throughout the specification, and their repeated descriptions are not provided. In this regard, the embodiments may take different forms and should not be construed as limited to the descriptions set forth herein. Accordingly, embodiments are described in more detail only with reference to the accompanying drawings to explain aspects of this description.

[0041] Unless the context clearly indicates otherwise, the singular forms “a”, “an” and “the” as used herein are intended to also include the plural forms.

[0042] It will be further understood that, when used in this specification, the terms “includes,” “comprises,” and / or “comprising” indicate the presence of a described feature, step, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. Additionally, the terms “comprise(s)” / “comprising,” “include(s)” / “including,” “have” / “has” / “having” or similar terms include or support the terms “consisting of” and “substantially constitutes”, indicating the presence of a described feature, integer, step, operation, element, and / or component, without or substantially without the presence of other features, integers, steps, operations, elements, components, and / or groups thereof.

[0043] As used herein, the terms “use,” “using,” and “used” can be considered synonymous with the terms “utilize,” “utilizing,” and “utilized,” respectively.

[0044] As used herein, the term “and / or” includes any and all combinations of one or more of the associated enumerated items. Furthermore, when describing embodiments of this disclosure, the use of “may” refers to “one or more embodiments of this disclosure”.

[0045] As used herein, expressions such as “at least one of…”, “one of…”, and “selected from…” modify the entire list of elements and not individual elements of the list when placed before / after a list of elements. Throughout this disclosure, expressions such as “at least one of a, b, and c”, “selected from at least one of a, b, and c”, and “at least one of a, b, and / or c” indicate only a, only b, only c, both a and b (e.g., simultaneously), both a and c (e.g., simultaneously), both b and c (e.g., simultaneously), all a, b, and c, or variations thereof.

[0046] It will be understood that when an element is referred to as being "on" another element, "connected to" or "attached to" another element, it may be directly on, connected to or attached to the other element, or one or more intermediary elements may be present. When an element is referred to as being "directly on" another element, "directly connected to" or "directly attached to" another element, no intermediary element is present.

[0047] For ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” “up,” “bottom,” and “top” are used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. It will be understood that spatial relative terms are intended to encompass different orientations of a device in use or operation other than those depicted in the figures. For example, if the device illustrated in the figures is flipped, the device described as “below” or “under” another device will then be placed “above” or “on top” of that other device. Therefore, the term “below” can encompass both the above and below orientations. Devices may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein should be interpreted accordingly.

[0048] As used herein, the terms “substantially,” “about,” and similar terms are used as terms of approximation and not as terms of degree, and are intended to explain the inherent biases of measured or calculated values ​​that would be recognized by one of ordinary skill in the art. “About” or “approximation” as used herein includes stated values ​​and means within an acceptable range of deviations from a particular value, as determined by one of ordinary skill in the art considering the measurements under discussion and the errors associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0049] Any numerical range set forth herein is intended to include all subranges with the same numerical precision contained within the set forth range. For example, the range “1.0 to 10.0” is intended to include all subranges between the set forth minimum value of 1.0 and the set forth maximum value of 10.0 (and inclusive), that is, all subranges having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit set forth herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit set forth in this specification is intended to include all higher numerical limits contained therein. Accordingly, the applicant reserves the right to amend this specification (including the claims) to expressly set forth any subranges contained within the range expressly set forth herein.

[0050] The electronic devices and / or any other related devices or components described herein according to embodiments of this disclosure may be implemented using any suitable hardware, firmware (e.g., application-specific integrated circuits), software, or a combination of software, firmware, and hardware. For example, various components of the device may be formed on an integrated circuit (IC) chip or on a separate IC chip. Furthermore, various components of the device may be implemented on a flexible printed circuit film, a tape package, or a printed circuit board (PCB), or formed on a substrate. Furthermore, various components of the device may be processes or threads running on one or more processors in one or more computing devices, executing computer program instructions and interacting with other system components to perform the various functions described herein. The computer program instructions are stored in memory, which may be implemented using standard memory devices (e.g., random access memory (RAM) in the computing device). The computer program instructions may also be stored in other non-transitory computer-readable media (e.g., CD-ROMs or flash drives). And, those skilled in the art will recognize that, without departing from the scope of embodiments of this disclosure, the functions of various computing devices may be combined or integrated into a single computing device, or the functions of a dedicated computing device may be distributed across one or more other computing devices.

[0051] Those skilled in the art will recognize that, in view of the overall content of this disclosure, each suitable feature of the various embodiments of this disclosure may be combined in part or in whole, or combined with one another, and may be technically interlocked and operated in various suitable ways, and unless otherwise stated or implied, each embodiment may be implemented independently of one another or in combination with one another in any suitable way.

[0052] A light-emitting device according to one or more embodiments may include: a first electrode; a second electrode facing the first electrode; an interlayer disposed between the first electrode and the second electrode and including an emitting layer; and an organometallic compound represented by Formula 1.

[0053] Formula 1

[0054]

[0055] In Equation 1,

[0056] M can be platinum (Pt), palladium (Pd), cobalt (Co), gold (Au), nickel (Ni), silver (Ag), or copper (Cu).

[0057] CY1, CY2, and CY4 can each be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0058] X1 to X4 can each be C or N independently.

[0059] L1 to L3 can each be an independent single bond (e.g., a single covalent bond), *-N(R5)-*', *-B(R5)-*', *-P(R5)-*', *-C(R5)(R6)-*', *-Si(R5)(R6)-*', *-Ge(R5)(R6)-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', or *-C(=S)-*', where * and *' each indicate the bonding site with an adjacent atom.

[0060] T1 can be O, S, or Se.

[0061] T2 and T3 can each be independently a single bond (e.g., a single covalent bond), O, S, or Se.

[0062] At least one of T2 and T3 may not be a single bond (e.g., may not be a single covalent bond).

[0063] a1, a2, and a4 can each be an integer selected from 0 to 10 independently.

[0064] R1, R2, R 31 R 32 R4 through R6 can each be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2),

[0065] Optional, R 31 and R 32 They can bond to each other to form unsubstituted or by at least one R 10a Replacement C3-C60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0066] R 10a Possible forms:

[0067] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, or hydrazone;

[0068] Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 ) or any combination thereof;

[0069] Each of the following C3-Cs that are not substituted or are substituted by: 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 ) or any combination thereof; or

[0070] -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 ) or -P(=O)(Q 31 (Q) 32 ),and

[0071] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; or each unsubstituted or replaced by deuterium, -F, cyano, C1-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups.

[0072] In one or more embodiments, M may be platinum (Pt).

[0073] In one or more embodiments, L1 to L3 may each be a single bond (e.g., a single covalent bond), *-N(R5)-*', *-C(R5)(R6)-*', *-Si(R5)(R6)-*', or *-O-*'.

[0074] In one or more embodiments, L2 may be *-O-*'.

[0075] In one or more embodiments, the organometallic compound represented by Formula 1 may include at least one deuterium.

[0076] In one or more embodiments, the bond between X1 and M and the bond between X4 and M may each be a coordinate bond, and the bond between X2 and M and the bond between X3 and M may each be a covalent bond.

[0077] In one or more embodiments, X1 to X3 may each be C, and X4 may be N.

[0078] In one or more embodiments, CY1, CY2, and CY4 may each independently be cyclopentadienyl, adamantyl, norbornel, phenyl, pentanenyl, naphthyl, azuleyl, indaryl, acenaphthel, finasteryl, phenanthryl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, penfenyl, heptanenyl, tetraphenyl, fraxyl, hexaphenyl, pentaphenyl, rubidyl, keratyl, ovoleyl, indene, fluorenyl, spirodifluorene Benzyl, benzofluorenyl, indophenanthryl, indoanthraceneyl, pyrroleyl, thiopheneyl, furanyl, indoleyl, benzoindoleyl, naphthoindoleyl, isoindoleyl, benzoisoindoleyl, naphthoisoindoleyl, benzothiolyl, benzothiphenyl, benzofuranyl, carbazoleyl, dibenzothiolyl, dibenzothiphenyl, dibenzofuranyl, indocarbazoleyl, indolecarbazoleyl, benzofuranocarbazoleyl, benzothiphenocarbazoleyl, benzothiolocarbazoleyl, benzoindole Carbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothiol, benzonaphthothiol, benzofuran-dibenzofuranyl, benzofuran-dibenzothiol, benzothiophene-dibenzothiol, pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, benzopyrazolyl, benzimidazolyl, benzooxazolyl, benzoisooxazolyl, benzothiazolyl, benzoisothiazolyl, pyridyl Pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cyclolinyl, phthalazinyl, naphthinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazoyl, azafluorenyl, azadibenzothiopheneyl, azadibenzothiopheneyl, or azadibenzofuranyl.

[0079] In one or more embodiments, CY1, CY2, and CY4 may each independently be phenyl, pentanenyl, naphthyl, azyl, indole, acenaphthenic, phenanthyl, anthracene, pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzofuranyl, dibenzocarbazole, indolecarbazole, indolecarbazole, benzofuranylcarbazole, benzothiophenecarbazole, benzothiophenecarbazole, benzoindolecarbazole, benzocarbazole, benzonaphthenic, benzonaphthenic, benzofuranyl, benzofuranyldibenzofuranyl, benzofuranyldiphenyl benzothiophene, benzothiophene-dibenzothiophene, pyrazolyl, imidazole, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, benzopyrazolyl, benzimidazole, benzooxazolyl, benzoisooxazolyl, benzothiazolyl, benzoisothiazolyl, pyridyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzyl Quinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cyclolinyl, phthalazinyl, naphthidyl, imidazopyridyl, imidazopyrimidyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, imidazopyridazinyl, azacarbazoyl, azafluorenyl, azadibenzothiopheneyl, or azadibenzofuranyl.

[0080] In one or more embodiments, T1 may be O or S.

[0081] In one or more embodiments, i) T2 may be a single bond (e.g., a single covalent bond), and T3 may not be a single bond (e.g., may not be a single covalent bond), or

[0082] ii) T3 may be a single bond (e.g., a single covalent bond), and T2 may not be a single bond (e.g., a single covalent bond).

[0083] In one or more embodiments, Equation 1 is derived from... The represented group (part) can be any group represented by formula 2-1 to formula 2-4:

[0084]

[0085] Among them, in equations 2-1 to 2-4,

[0086] X3, R 31 and R 32 Each can be as specified in the instruction manual.

[0087] T1 to T3 can each be independently O, S, or Se.

[0088] Y1 can be C(Z1) or N, Y2 can be C(Z2) or N, Y3 can be C(Z3) or N, and Y4 can be C(Z4) or N.

[0089] Z1 to Z4 can be used independently as described in the instruction manual (refer to R). 10a Limited, and

[0090] *, *' and *” each indicate a bonding site selected from one of L3, M and L2 in Equation 1.

[0091] In one or more embodiments, Equation 1 is derived from... The represented group (or part thereof) may be a group represented by formula 3-1 or formula 3-2:

[0092]

[0093] Among them, in equations 3-1 and 3-2,

[0094] X1 can be used as described in the instruction manual.

[0095] Y 11 It can be C(Z) 11 ) or N, Y 12 It can be C(Z) 12 ) or N, Y 13 It can be C(Z) 13 ) or N, and Y 14 It can be C(Z) 14 ) or N,

[0096] R 15 To R 17 and Z 11 To Z 14 Each can be independently defined as specified in R1 in the instruction manual, and

[0097] * and *' indicate the binding sites with M and L1 in Equation 1, respectively.

[0098] In one or more embodiments, the organometallic compound represented by Formula 1 may include at least one group represented by Formula 4:

[0099] Formula 4

[0100]

[0101] In Equation 4,

[0102] R 41 To R 44 Each can refer to R in the instruction manual. 10a Limited,

[0103] n41 and n42 can each be an integer selected from 1 to 5.

[0104] n43 can be an integer selected from 1 to 3.

[0105] n44 can be an integer selected from 1 to 4.

[0106] b1 can be an integer selected from 0 to 10, and

[0107] * Indicates the bonding site with adjacent atoms.

[0108] In one or more embodiments, R in Equations 3-1 and 3-2 15 It can be a group represented by Formula 4.

[0109] In one or more embodiments, R1, R2, R 31 R 32 R4 through R6 can each be independently hydrogen, deuterium, -F, cyano, unsubstituted, or modified by at least one R. 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

[0110] In one or more embodiments, R1, R2, R 31 R 32 R4 to R6 can each be independently: hydrogen, deuterium, -F or cyano;

[0111] Unsubstituted or substituted C1-C groups with deuterium, -F, cyano, or any combination thereof 20 Alkyl; or

[0112] Each of the following unsubstituted or substituted phenyl, naphthyl, terphenyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazole, azadibenzofuranyl, azadibenzothiophenyl, or azacarbazole: deuterium, -F, cyano, C1-C 20 Alkyl, deuterated C1-C 20 Alkyl, fluorinated C1-C 20 Alkyl, phenyl, deuterated phenyl, fluorinated phenyl, C1-C 20 Alkylphenyl, biphenyl, dibenzofuranyl, dibenzothiophenyl, carbazoyl, fluorenyl, dibenzothiophenyl, or any combination thereof.

[0113] In one or more embodiments, R1, R2, R 31 R 32 R4 through R6 can be independently defined as follows:

[0114] hydrogen;

[0115] Each of the following unsubstituted or substituted methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, 2-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, or 1,2-dimethylpropyl groups; or

[0116] Each of the following unsubstituted or substituted phenyl, naphthyl, terphenyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazole, azadibenzofuranyl, azadibenzothiophenyl or azacarbazole: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, 2-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, 1,2-dimethylpropyl or phenyl.

[0117] In one or more embodiments, R1, R2, R 31 R 32 R4 through R6 can each be independently: hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, or C1-C. 20 alkyl;

[0118] C1-C substituted by at least one of the following 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, cyano, nitro, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, and pyrimidinyl;

[0119] Each of the following is an unsubstituted or substituted phenyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazole, azadibenzofuranyl, azadibenzothiophenyl, or azacarbazole: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, cyano, C1-C 20 Alkyl, phenyl, biphenyl, C1-C 10Alkylphenyl, naphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrole, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindole, indole, indole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, Quinoxolinyl, quinazolinyl, cinolinyl, carbazole, phenanthroline, benzimidazolyl, benzofuranyl, benzothiophene, benzisothiazolyl, benzoxazolyl, benzisothiazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, imidazopyridyl, imidazopyrimidinyl, -Si(Q) 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 ) and -B(Q 31 (Q) 32 );or

[0120] -Si(Q1)(Q2)(Q3), -N(Q1)(Q2) or -B(Q1)(Q2), and

[0121] Q1 to Q3 and Q 31 To Q 33 Each can be independently:

[0122] -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H or -CD2CDH2; or

[0123] Each of the unsubstituted or selected from deuterium, C1-C 10 The alkyl, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridinyl, pyrazinyl, and triazinyl groups are substituted with at least one of the following: n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, phenyl, naphthyl, pyridyl, pyrimidinyl, pyridinyl, pyrazinyl, or triazinyl groups.

[0124] In one or more embodiments, R1, R2, R 31 R 32 R4 through R6 can be independently defined as follows:

[0125] Each of the following unsubstituted or substituted methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, 2-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, or 1,2-dimethylpropyl groups; or

[0126] The unsubstituted or substituted phenyl, naphthyl, terphenyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazole, azadibenzofuranyl, azadibenzothiophenyl or azacarbazole; the unsubstituted or substituted methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, sec-pentyl, tert-pentyl, 2-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, 1,2-dimethylpropyl or phenyl.

[0127] In one or more embodiments, the organometallic compound represented by Formula 1 may be selected from compound 1 to compound 288:

[0128]

[0129]

[0130]

[0131]

[0132]

[0133]

[0134]

[0135]

[0136]

[0137]

[0138]

[0139]

[0140] Organometallic compounds represented by Formula 1 include The structure is a portion or moiety of the structure represented by Equation 1, wherein T1 can be O, S or Se, T2 and T3 can each be a single bond (e.g., a single covalent bond), O, S or Se, and at least one of T2 and T3 may not be a single bond (e.g., may not be a single covalent bond).

[0141] Accordingly, organometallic compounds represented by Formula 1 can improve the driving voltage and luminous efficiency of light-emitting devices. Moreover, light-emitting devices employing organometallic compounds represented by Formula 1 exhibit excellent or appropriate stability, resulting in improved lifetime characteristics.

[0142] The methods for synthesizing organometallic compounds represented by Formula 1 can be identified by those skilled in the art by referring to the synthesis examples and / or embodiments provided herein.

[0143] At least one organometallic compound represented by Formula 1 may be used in a light-emitting device (e.g., an organic light-emitting device). By way of example, a light-emitting device is provided, comprising: a first electrode; a second electrode facing the first electrode; an interlayer disposed between the first electrode and the second electrode and including an emitting layer; and an organometallic compound represented by Formula 1.

[0144] In one or more embodiments,

[0145] The first electrode of the light-emitting device can be the anode.

[0146] The second electrode of the light-emitting device can be a cathode.

[0147] The interlayer may further include a hole transport region disposed between the first electrode and the emitter layer, and an electron transport region disposed between the emitter layer and the second electrode.

[0148] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof, and

[0149] The electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, an electron control layer, or any combination thereof.

[0150] In one or more embodiments, the organometallic compound represented by Formula 1 may be included in the interlayer.

[0151] In one or more embodiments, the organometallic compound represented by Formula 1 may be included in the emitter layer.

[0152] In one or more embodiments, the light-emitting device may further include a capping layer disposed outside the second electrode, and an organometallic compound represented by Formula 1 may be included in the capping layer.

[0153] In one or more embodiments, the light-emitting device may further include:

[0154] The first capping layer arranged outside the first electrode; and

[0155] A second capping layer is arranged outside the second electrode.

[0156] The organometallic compound represented by Formula 1 may be included in the first capping layer and / or the second capping layer.

[0157] In one or more embodiments, the emitter layer may include a host and a dopant, and the dopant may include an organometallic compound represented by Formula 1.

[0158] In one or more embodiments, the emitting layer may emit blue light.

[0159] In one or more embodiments, the dopant may be a phosphorescent dopant or a delayed fluorescence dopant.

[0160] In one or more embodiments, the body may include a first body containing at least one electron-donating group and a second body containing at least one electron-withdrawing group.

[0161] In one or more embodiments, the emitter layer may further include a sensitizer.

[0162] In one or more embodiments, the emission layer may include a delayed fluorescence material.

[0163] In one or more embodiments, the emitting layer may emit blue light.

[0164] In one or more embodiments, the emitter layer may further include a first body and a second body, wherein the first body may be a hole transport compound including at least one electron-donating group, and the second body may be an electron transport compound including at least one electron-withdrawing group.

[0165] In one or more embodiments, the emitter layer may further include a third compound, and the third compound may be a metal-containing compound.

[0166] In one or more embodiments, the third compound may act as a sensitizer, for example, a phosphorescent sensitizer.

[0167] In one or more embodiments, the third compound may not emit light.

[0168] In one or more embodiments, the emitter layer may further include at least one selected from auxiliary dopants and sensitizers.

[0169] In one or more embodiments, the auxiliary dopant and sensitizer may each be an organometallic compound comprising platinum and a tetradentate ligand bonded to platinum, and the tetradentate ligand may include a carbene moiety chemically bonded to platinum. For example, the auxiliary dopant and / or sensitizer may include a third compound.

[0170] In one or more embodiments, the first and second subjects may serve as subjects for forming the excited-state complex.

[0171] The term "electron-donating group" can refer to any part that has the ability to donate electrons, and for example, it can be a π-electron-rich C3-C group. 60 Cyclic groups and / or amine groups, but this disclosure is not limited thereto. Electron-donating groups may refer to nitrogen-containing C1-C groups excluding those lacking π electrons. 60 Cyclic groups other than cyclic groups.

[0172] The term "electron-withdrawing group" can refer to any part that has the ability to withdraw electrons, and for example, can be -F, -CFH2, -CF2H, -CF3, -CN, -NO2, or nitrogen-containing Cl-C atoms lacking π electrons. 60 Cyclic groups or any combination thereof. However, this disclosure is not limited thereto.

[0173] Regarding the light emission path in a light emission device according to one or more embodiments, a first body and a second body may form an exciton (first process), the energy of the exciton may be transferred to a third compound (second process), and the energy may be transferred from the third compound to an organometallic compound (third process).

[0174] In one or more embodiments, the amount of the third compound may be greater than 0 parts by weight and less than 50 parts by weight, based on the total weight of 100 parts by weight of the emitter layer.

[0175] In one or more embodiments, the first body may include at least one carbazole portion, and the second body may include at least one azine portion.

[0176] In one or more embodiments, the first body may be represented by formula 301-1A or formula 301-2A:

[0177] Formula 301-1A

[0178]

[0179] Formula 301-2A

[0180]

[0181] In Equations 301-1A and 301-2A,

[0182] Ring A 301 To Ring A304 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0183] X 301 It can be O, S, N[(L 304 ) xb4 -R 304a ]、C(R 304a (R) 304b ) or Si(R 304a (R) 304b ),

[0184] X 302 It can be a single bond (e.g., a single covalent bond), O, S, N[(L 305 ) xb5 -R 305a ]、C(R 305a (R) 305b ) or Si(R 305a (R) 305b ),

[0185] X 303 It can be a single bond (e.g., a single covalent bond), O, S, N[(L 306 ) xb6 -R 306a ]、C(R 306a (R) 306b ) or Si(R 306a (R) 306b ),

[0186] xb22 and xb23 can each be an integer selected from 0 to 10 independently.

[0187] L 301 To L 307 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0188] xb1 to xb7 can each be an integer selected from 0 to 5 independently.

[0189] R 301 To R 303 R 304a To R 306a R 304b To R306b and R 311 To R 314 Each group can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -C(Q) 301 (Q) 302 (Q) 303 ), -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 ),and

[0190] Q 301 To Q 303 Each can be described as in Q1, and R 10a As described in this article.

[0191] In one or more embodiments, the first body may be one of compounds HTH1 to HTH56, but the embodiments are not limited thereto:

[0192]

[0193]

[0194] In one or more embodiments, the second body may be represented by equation 302:

[0195] Formula 302

[0196]

[0197] In Equation 302,

[0198] X 321 It can be C(R) 321 ) or N,

[0199] X 322 It can be C(R) 322 ) or N,

[0200] X 323 It can be C(R) 323 ) or N,

[0201] X 321 To X 323 At least one of them can be N,

[0202] L 324 To L 326 Each can be independently a single bond (e.g., a single covalent bond), unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, *-C(Q) 321 (Q) 322 )-*'、*-Si(Q 321 (Q) 322 )-*'、*-B(Q 321 )-*' or *-N(Q 321 )-*',

[0203] n324 to n326 can each be an integer selected from 1 to 5 independently.

[0204] R 321 To R 326 Each group can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -C(Q) 323 (Q) 324 (Q) 325 ), -Si(Q 323 (Q) 324 (Q) 325 -N(Q) 323 (Q) 324 -B(Q) 323 (Q) 324 -C(=O)(Q) 323 -S(=O)2(Q) 323 ) or -P(=O)(Q 323 (Q) 324 ),

[0205] Selected from Q 321 To Q 325 and R 321 To R 326 Two or more adjacent groups may optionally be bonded to each other to form an unsubstituted or R-shaped structure. 10a Replacement C5-C 30 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C2-C 30 Heterocyclic group,

[0206] * and *' each indicate the bonding site with the adjacent atom.

[0207] R 10a As described in the instruction manual, and

[0208] Q 321 To Q 325 Each can be described as described in Q1.

[0209] In one or more embodiments, the second body may be one of compounds ETH1 to ETH86, but the embodiments are not limited thereto:

[0210]

[0211]

[0212]

[0213] In one or more embodiments, the third compound may be represented by formula 401A:

[0214] Formula 401A

[0215] M 401 (L 401 ) xc1 (L 402 ) xc2

[0216]

[0217]

[0218] Among them, in Equations 401A and 402A to 402D,

[0219] M 401 These can be transition metals in the first row, the second row, or the third row of the periodic table.

[0220] L 401 It can be a ligand represented by one of formulas 402A to 402D.

[0221] L 402 It can be a monodentate, bidentate, or tripentate ligand.

[0222] xc1 can be 1 or 2.

[0223] xc2 can be an integer selected from 0 to 4.

[0224] A 401 To A 404 Each can be independently classified as C5-C 30 Carbocyclic or C1-C 30 Heterocyclic group,

[0225] T 401 To T 404 Each can be an independent single bond (e.g., a single covalent bond), double bond, *-O-*', *-S-*', *-C(=O)-*', *-S(=O)-*', *-C(R)-*', or *-C(R)-*'. 405 (R) 406 )-*'、*-C(R 405 )=C(R 406 )-*'、*-C(R 405 )=*'、*-Si(R 405 (R) 406 )-*'、*-B(R 405 )-*'、*-N(R 405 )-*' or *-P(R 405 )-*',

[0226] k401 to k404 can each be independently 1, 2, or 3.

[0227] Y 401 To Y 404 Each can be an independent single bond (e.g., a single covalent or coordinate bond, which can also be called a coordinate-covalent or coordinate-valence bond), *-O-*', *-S-*', *-C(R) 407 (R) 408 )-*'、*-Si(R 407 (R) 408 )-*'、*-B(R 407 )-*'、*-N(R 407 )-*' or *-P(R 407 )-*',

[0228] *1, *2, *3, and *4 each indicate M 401 The bonding sites,

[0229] R 401 To R 408 Each group can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl groups, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2),

[0230] R 401 To R 408They may optionally bond to each other to form unsubstituted or by at least one R 10a Replacement C5-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0231] b401 to b404 can each be an integer selected from 0 to 10 independently.

[0232] * and *' each indicate the bonding site with the adjacent atom, and

[0233] Q1 to Q3 and R 10a Each may be as described in the specification (e.g., refer to Formula 1).

[0234] In one or more embodiments, the compound represented by formula 401A may be a carbene complex.

[0235] As used herein, the term "carbaene complex" may refer to a complex comprising a metal and a ligand bonded to the metal, wherein at least one bond between the metal and the ligand is a bond between the metal and a carbon atom of the carbaene moiety.

[0236] In one or more embodiments, the sensitizer may include a compound represented by formula 401A.

[0237] In one or more embodiments, the third compound may be one of compounds PD1 to PD41, but the embodiments are not limited thereto:

[0238]

[0239]

[0240]

[0241] In one or more embodiments, R in Formula 301-1A and Formula 301-2A 301 To R 303 R 304a To R 306a R 304b To R 306b and R 311 To R 314 R in Equation 302 321 To R 326 And R in Equations 401A and 402A to 402D 401 To R 408 Each of these can be independently: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20Alkyl or C1-C 20 Alkoxy;

[0242] Each of the following C1-C is replaced 20 Alkyl or C1-C 20 Alkyl groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, or any combination thereof;

[0243] Each of the following unsubstituted or substituted compounds: cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C1-C 10 Alkylphenyl, naphthyl, tetrahydronaphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, inzolyl, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, cinolinyl, carbazole, phenanthridine, acridineyl, phenanthrolyl, phenazinyl, benzimidazolyl, benzofuranyl Benzothiophene, benzoisothiazolyl, benzoxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophene, azafluorenyl or azadibenzothiophene: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C1-C 10Alkylphenyl, naphthyl, tetrahydronaphthyl, fluorenyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, pyrrole, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazole, purine, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, cinolinyl, Carbazolyl, phenanthridinel, acridinel, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophenel, benzoisothiazolyl, benzoxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, dibenzofuranyl, dibenzothiophenel, benzocarbazolyl, dibenzocarbazolyl, imidazopyridyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenel, azafluorenyl, azadibenzothiophenel, -Si(Q) 31 (Q) 32 (Q) 33 -B(Q) 31 (Q) 32 -P(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 -P(=O)(Q) 31 (Q) 32 ) or any combination thereof; or

[0244] -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

[0245] Q1 to Q3 and Q 31 To Q 33 Each may be as described in the specification (e.g., refer to Formula 1).

[0246] In one or more embodiments, R in Formula 301-1A and Formula 301-2A 301 To R 303 R 304a To R 306a R 304b To R 306b and R 311 To R 314 R in Equation 302 321 To R 326 And R in Equations 401A and 402A to 402D 401 To R408 Each can be independently:

[0247] Hydrogen, deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy;

[0248] A group represented by one of formulas 9-1 to 9-61 or a group represented by one of formulas 10-1 to 10-348; or

[0249] -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):

[0250]

[0251]

[0252]

[0253]

[0254]

[0255]

[0256]

[0257]

[0258]

[0259] In formulas 9-1 to 9-61 and 10-1 to 10-348, * indicates the bonding site with an adjacent atom, "Ph" represents phenyl, "D" represents deuterium, and "TMS" represents trimethylsilyl.

[0260] Q1 to Q3 can each be as described in the instruction manual.

[0261] In one or more embodiments, the electron transport region of the light-emitting device may include a hole-blocking layer, and the hole-blocking layer may include a phosphine oxide compound, a silicon compound, or any combination thereof. In one or more embodiments, the hole-blocking layer may directly contact the emitting layer.

[0262] In one or more embodiments, the light-emitting device may further include a capping layer disposed outside the first electrode and / or outside the second electrode.

[0263] In one or more embodiments, the light-emitting device may further include at least one selected from a first capping layer disposed outside the first electrode and a second capping layer disposed outside the second electrode, wherein at least one selected from the first capping layer and the second capping layer may include an organometallic compound represented by Formula 1. Further details of the first capping layer and / or the second capping layer can be found in the description provided herein.

[0264] In one or more embodiments, the light-emitting device may further include a first capping layer disposed outside the first electrode. For example, the first capping layer may include an organometallic compound represented by Formula 1.

[0265] In one or more embodiments, the light-emitting device may further include a second capping layer disposed outside the second electrode. For example, the second capping layer may include an organometallic compound represented by Formula 1.

[0266] In one or more embodiments, the light-emitting device may further include a first capping layer disposed outside the first electrode and a second capping layer disposed outside the second electrode. For example, at least one selected from the first capping layer and the second capping layer may include an organometallic compound represented by Formula 1.

[0267] As used herein, the phrase “(interlayer and / or capping layer) includes an organometallic compound represented by Formula 1” can be understood as “(interlayer and / or capping layer) may include one type of organometallic compound represented by Formula 1 or two or more different types of organometallic compounds each represented by Formula 1”.

[0268] In one or more embodiments, the interlayer and / or capping layer may comprise only compound 1 as an organometallic compound. For example, compound 1 may be included in the emitting layer of the light-emitting device. In one or more embodiments, the interlayer may include both compound 1 and compound 2 as organometallic compounds. For example, compound 1 and compound 2 may be included in the same layer (e.g., both compound 1 and compound 2 may be included in the emitting layer simultaneously), or they may be included in different layers (e.g., compound 1 may be included in the emitting layer and compound 2 may be included in the electron transport region).

[0269] As used herein, the term "sandwich" refers to a single layer and / or multiple layers between the first and second electrodes of a light-emitting device.

[0270] According to one or more embodiments, the electronic device includes 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 comprising a source electrode and a drain electrode, wherein a first electrode of the light-emitting device is electrically connected to the source electrode or the drain electrode. In one or more embodiments, the electronic device may further include a color filter, a color conversion layer, a touchscreen layer, a polarizing layer, or any combination thereof. Further details of the electronic device can be found in the description provided herein.

[0271] According to one or more embodiments, the electronic device including the light-emitting device can be selected from flat panel displays, curved displays, computer monitors, medical monitors, televisions, billboards, indoor lights, outdoor lights, signal lights, head-up displays, fully transparent displays, partially transparent displays, flexible displays, rollable displays, foldable displays, retractable displays, laser printers, telephones, mobile phones, tablet computers, phablet computers, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders, viewfinders, microdisplays, 3D displays, virtual reality displays, augmented reality displays, vehicles, video walls comprising multiple displays spliced ​​together, theater screens, stadium screens, light therapy devices, and signs.

[0272] Figure 1 Description

[0273] Figure 1 This is a schematic cross-sectional view of a light-emitting device 10 according to one or more embodiments. The light-emitting device 10 includes a first electrode 110, a sandwich layer 130, and a second electrode 150.

[0274] The following text is for reference only. Figure 1 The structure of a light-emitting device 10 according to one or more embodiments and a method for manufacturing the light-emitting device 10 are described.

[0275] First electrode 110

[0276] exist Figure 1 In this embodiment, the substrate may be additionally disposed below the first electrode 110 or on the second electrode 150. A glass substrate and / or a plastic substrate may be used as the substrate. In one or more embodiments, the substrate may be a flexible substrate and may include plastics with excellent or suitable heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, and / or any combination thereof.

[0277] The first electrode 110 can be formed, for example, by depositing and / or sputtering a material for forming the first electrode 110 on a substrate. When the first electrode 110 is an anode, the material for forming the first electrode 110 can be a high work function material that facilitates hole injection.

[0278] The first electrode 110 may be a reflective electrode, a transmissive-reflective electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof. In one or more embodiments, when the first electrode 110 is a transmissive-reflective electrode or a reflective electrode, the material used to form the first electrode 110 may include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof.

[0279] The first electrode 110 may have a monolayer structure comprising a single layer (e.g., composed of a single layer) or a multilayer structure comprising multiple layers. In one or more embodiments, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0280] mezzanine 130

[0281] The interlayer 130 is disposed on the first electrode 110. The interlayer 130 may include an emitter layer.

[0282] The interlayer 130 may further include a hole transport region disposed between the first electrode 110 and the emitter layer and an electron transport region disposed between the emitter layer and the second electrode 150.

[0283] In addition to one or more suitable organic materials, the interlayer 130 may further include metal-containing compounds (such as organometallic compounds) and / or inorganic materials (such as quantum dots).

[0284] In one or more embodiments, the interlayer 130 may include i) two or more emitting units stacked sequentially between the first electrode 110 and the second electrode 150, and ii) a charge generation layer between adjacent emitting units in the two or more emitting units. When the interlayer 130 includes the emitting units and charge generation layer as described above, the light-emitting device 10 may be a series light-emitting device.

[0285] Hole transport region in interlayer 130

[0286] The hole transport region may have: i) a single-layer structure comprising a single layer (e.g., composed of a single layer) of a single material (e.g., composed of a single material), ii) a single-layer structure comprising a single layer (e.g., composed of a single layer) of multiple materials that are different from each other (e.g., composed of multiple materials that are different from each other), or iii) a multi-layer structure comprising multiple layers of multiple materials that are different from each other.

[0287] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

[0288] In one or more embodiments, 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 / electron blocking layer structure, wherein the constituent layers of each structure are stacked sequentially starting from the first electrode 110.

[0289] The hole transport region may include the compound represented by Formula 201, the compound represented by Formula 202, or any combination thereof:

[0290] Formula 201

[0291]

[0292] Formula 202

[0293]

[0294] Among them, in equations 201 and 202,

[0295] L 201 To L 204 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0296] L 205 It can be *-O-*', *-S-*', or *-N(Q) 201 )-*', unsubstituted or by at least one R 10a Replacement C1-C 20 Alkylene, unsubstituted, or with at least one R 10a Replacement C2-C 20 alkenyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0297] xa1 to xa4 can each be an integer selected from 0 to 5 independently.

[0298] xa5 can be an integer selected from 1 to 10.

[0299] R 201To R 204 and Q 201 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0300] R 201 and R 202 Optionally via a single bond (e.g., a single covalent bond), unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups and / or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form unsubstituted or substituted compounds with at least one R group. 10a Replacement C8-C 60 Polycyclic groups (e.g., carbazole group) (e.g., compound HT16),

[0301] R 203 and R 204 Optionally via a single bond (e.g., a single covalent bond), unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups and / or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form unsubstituted or substituted compounds with at least one R group. 10a Replacement C8-C 60 Polycyclic groups, and

[0302] na1 can be an integer selected from 1 to 4.

[0303] In one or more embodiments, formulas 201 and 202 may each independently include at least one of the groups represented by formulas CY201 to CY217:

[0304]

[0305] In formulas CY201 to CY217, R 10b and R 10c Each can refer to R. 10a As described, CY 201 To CY 204 Each can be independently C3-C 20 Carbocyclic or C1-C 20 Heterocyclic group, and at least one hydrogen in formulas CY201 to CY217 may be unsubstituted or R as described herein. 10a replace.

[0306] In one or more embodiments, the ring CY in formulas CY201 to CY217 201 To CY 204 Each can be independently phenyl, naphthyl, phenanthryl or anthracene.

[0307] In one or more embodiments, Formula 201 and Formula 202 may each independently include at least one of the groups represented by Formula CY201 to Formula CY203.

[0308] In one or more embodiments, 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.

[0309] In one or more embodiments, in formula 201, xa1 can be 1, R 201 It can be a group represented by one of the formulas CY201 to CY203, xa2 can be 0, and R 202 It can be a group represented by one of the formulas CY204 to CY207.

[0310] In one or more embodiments, Formula 201 and Formula 202 may each independently exclude (e.g., exclude) groups represented by Formulas CY201 to CY203.

[0311] In one or more embodiments, Formulas 201 and 202 may each independently exclude (e.g., exclude) groups represented by Formulas CY201 to CY203 and may include at least one of groups represented by Formulas CY204 to CY217.

[0312] In one or more embodiments, Formula 201 and Formula 202 may each independently exclude (e.g., exclude) groups represented by Formulas CY201 to CY217.

[0313] For example, the hole transport region may include one of compounds HT1 to HT46, m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiroTPD, spiroNPB, methylated NPB, TAPC, HMTPD, 4,4',4”-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), or any combination thereof:

[0314]

[0315]

[0316]

[0317]

[0318] The thickness of the hole transport region can be approximately to approximately For example, about to approximately When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer can be approximately [missing information]. to approximately For example, about to approximately Furthermore, the thickness of the hole transport layer can be approximately to approximately For example, about to approximately When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within any of the ranges mentioned above, satisfactory or appropriate hole transport characteristics can be obtained without significantly increasing the driving voltage.

[0319] The emission assist layer can increase luminous efficiency by compensating for the optical resonant distance according to the wavelength of the light emitted by the emission layer, and the electron blocking layer can block or reduce electron leakage from the emission layer to the hole transport region. Any of the materials that may be included in the hole transport region may be included in the emission assist layer and / or the electron blocking layer.

[0320] p-dopants

[0321] In addition to these materials, the hole transport region may further include a charge-generating material for improving conductivity. The charge-generating material may be (e.g., in the form of a single layer comprising the charge-generating material (e.g., composed of the charge-generating material)) uniformly (e.g., substantially uniformly) or substantially non-uniformly dispersed in the hole transport region.

[0322] The charge-generating material can be, for example, a p-doped agent.

[0323] For example, the LUMO level of a p-doped agent can be less than or equal to -3.5 eV.

[0324] In one or more embodiments, the p-doper may include quinone derivatives, cyano-containing compounds, compounds comprising elements EL1 and EL2, or any combination thereof.

[0325] Examples of quinone derivatives may include TCNQ and F4-TCNQ.

[0326] Examples of cyano-containing compounds may include HAT-CN and compounds represented by formula 221.

[0327]

[0328] Equation 221

[0329]

[0330] In Equation 221,

[0331] R 221 To R 223 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, and

[0332] R 221 To R 223 At least one of them can be independently replaced by C3-C respectively. 60 Carbocyclic or C1-C 60 Heterocyclic groups: cyano; -F; -Cl; -Br; -I; C1-C substituted with cyano, -F, -Cl, -Br, -I or any combination thereof 20 Alkyl groups; or any combination thereof.

[0333] In a compound that includes elements EL1 and EL2, element EL1 may be a metal, a metalloid, or a combination thereof, and element EL2 may be a nonmetal, a metalloid, or a combination thereof.

[0334] Examples of metals may include alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), and / or cesium (Cs); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), and / or barium (Ba); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), and cobalt (C). (e.g., rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag) and / or gold (Au); post-transition metals (e.g., zinc (Zn), indium (In) and / or tin (Sn); and lanthanides (e.g., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and / or lutetium (Lu).)

[0335] Examples of metalloids may include silicon (Si), antimony (Sb), and tellurium (Te).

[0336] Examples of nonmetals may include oxygen (O) and halogens (e.g., F, Cl, Br and / or I).

[0337] Examples of compounds including elements EL1 and EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides and / or metal iodides), quasi-metal halides (e.g., quasi-metal fluorides, quasi-metal chlorides, quasi-metal bromides and / or quasi-metal iodides), metal tellurides, or any combination thereof.

[0338] Examples of metal oxides may include tungsten oxides (e.g., WO, W2O3, WO2, WO3 and / or W2O5, etc.), vanadium oxides (e.g., VO, V2O3, VO2 and / or V2O5, etc.), molybdenum oxides (e.g., MoO, Mo2O3, MoO2, MoO3 and / or Mo2O5, etc.) and rhenium oxides (e.g., ReO3, etc.).

[0339] Examples of metal halides may include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

[0340] Examples of alkali metal halides may include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and CsI.

[0341] Examples of alkaline earth metal halides may include BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2, and BaI2.

[0342] Examples of transition metal halides may include titanium halides (e.g., TiF4, TiCl4, TiBr4 and / or TiI4, etc.), zirconium halides (e.g., ZrF4, ZrCl4, ZrBr4 and / or ZrI4, etc.), hafnium halides (e.g., HfF4, HfCl4, HfBr4 and / or HfI4, etc.), vanadium halides (e.g., VF3, VCl3, VBr3 and / or VI3, etc.), niobium halides (e.g., NbF3, NbCl3, NbBr3 and / or NbI3, etc.), and tantalum halides (e.g., TaF3, TaCl3, TaBr3, etc.). 3 and / or TaI3, etc.), chromium halides (e.g., CrF3, CrCl3, CrBr3 and / or CrI3, etc.), molybdenum halides (e.g., MoF3, MoCl3, MoBr3 and / or MoI3, etc.), tungsten halides (e.g., WF3, WCl3, WBr3 and / or WI3, etc.), manganese halides (e.g., MnF2, MnCl2, MnBr2 and / or MnI2, etc.), technetium halides (e.g., TcF2, TcCl2, TcBr2 and / or TcI2, etc.), rhenium halides (e.g., ReF2, ReCl2, ReBr2 and / or ReI2, etc.). Ferrous halides (e.g., FeF2, FeCl2, FeBr2 and / or FeI2), ruthenium halides (e.g., RuF2, RuCl2, RuBr2 and / or RuI2), osmium halides (e.g., OsF2, OsCl2, OsBr2 and / or OsI2), cobalt halides (e.g., CoF2, CoCl2, CoBr2 and / or CoI2), rhodium halides (e.g., RhF2, RhCl2, RhBr2 and / or RhI2), iridium halides (e.g., IrF2, IrCl2, IrBr2). Nickel halides (e.g., NiF2, NiCl2, NiBr2 and / or NiI2), palladium halides (e.g., PdF2, PdCl2, PdBr2 and / or PdI2), platinum halides (e.g., PtF2, PtCl2, PtBr2 and / or PtI2), cuprous halides (e.g., CuF, CuCl, CuBr and / or CuI), silver halides (e.g., AgF, AgCl, AgBr and / or AgI), and gold halides (e.g., AuF, AuCl, AuBr and / or AuI).

[0343] Examples of post-transition metal halides may include zinc halides (e.g., ZnF2, ZnCl2, ZnBr2 and / or ZnI2, etc.), indium halides (e.g., InI3, etc.) and tin halides (e.g., SnI2, etc.).

[0344] Examples of lanthanide metal halides may include YbF, YbF2, YbF3, SmF3, YbCl, YbCl2, YbCl3, SmCl3, YbBr, YbBr2, YbBr3, SmBr3, YbI, YbI2, YbI3 and / or SmI3, etc.

[0345] Examples of quasi-metal halides may include antimony halides (e.g., SbCl5, etc.).

[0346] Examples of metal tellurides may include alkali metal tellurides (e.g., Li₂Te, Na₂Te, K₂Te, Rb₂Te and / or Cs₂Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe and / or BaTe, etc.), and transition metal tellurides (e.g., TiTe₂, ZrTe₂, HfTe₂, V₂Te₃, Nb₂Te₃, Ta₂Te₃, Cr₂Te₃, Mo₂Te₃, W₂Te₃, MnTe, TcTe, ReTe, F₂Te, etc.). (eTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu2Te, CuTe, Ag2Te, AgTe and / or Au2Te, etc.), post-transition metal tellurides (e.g., ZnTe, etc.) and lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe and / or LuTe, etc.).

[0347] emission layer in interlayer 130

[0348] When the light-emitting device 10 is a full-color light-emitting device, the emitting layer can be patterned as a red emitting layer, a green emitting layer, and / or a blue emitting layer according to the sub-pixels. In one or more embodiments, the emitting layer may have a stacked structure of two or more layers selected from red, green, and blue emitting layers, wherein the two or more layers are in contact with or separated from each other to emit white light. In one or more embodiments, the emitting layer may include two or more materials selected from red, green, and blue emitting materials, wherein the two or more materials are mixed with each other in a single layer to emit white light.

[0349] The emitting layer may include a host and a dopant. The dopant may include phosphorescent dopant, fluorescent dopant, or any combination thereof.

[0350] Based on 100 parts by weight of the host, the amount of dopant in the emitter layer can be from about 0.01 parts by weight to about 15 parts by weight.

[0351] In one or more embodiments, the emission layer may include quantum dots.

[0352] In one or more embodiments, the emission layer may include a delayed fluorescence material. The delayed fluorescence material may act as a host or a dopant in the emission layer.

[0353] The thickness of the emission layer can be approximately to approximately For example, about to approximately When the thickness of the emitting layer is within any of the above ranges, excellent or adequate light-emitting properties can be obtained without significantly increasing the driving voltage.

[0354] main body

[0355] The main body may further include a compound represented by formula 301:

[0356] Formula 301

[0357] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 ,

[0358] In Equation 301,

[0359] Ar 301 and L 301 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0360] xb11 can be 1, 2, or 3.

[0361] xb1 can be an integer selected from 0 to 5.

[0362] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) or -P(=O)(Q 301 (Q) 302 ),

[0363] xb21 can be an integer selected from 1 to 5, and

[0364] Q 301 To Q 303 Each can be described as described in Q1.

[0365] In one or more embodiments, when xb11 in formula 301 is 2 or greater, two or more Ar 301 They can be connected to each other via single bonds (e.g., a single covalent bond).

[0366] In one or more embodiments, the body may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0367] Formula 301-1

[0368]

[0369] Formula 301-2

[0370]

[0371] Among them, in equations 301-1 and 301-2,

[0372] Ring A 301 To Ring A 304 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0373] X 301 It can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 (R) 305 ) or Si(R 304 (R) 305 ),

[0374] xb22 and xb23 can each be 0, 1, or 2 independently.

[0375] L 301 xb1 and R 301 Each can be as described in this instruction manual.

[0376] L 302 To L 304 Each can be used independently, as shown in reference L. 301 As described,

[0377] xb2 to xb4 can each be independently described as referred to xb1, and

[0378] R 302 To R 305 and R 311 To R 314 Each can refer to R. 301 As described.

[0379] In one or more embodiments, the body may include an alkaline earth metal complex, a post-transition metal complex, or any combination thereof. In one or more embodiments, the body may include a Be complex (e.g., compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0380] In one or more embodiments, the main body may include: one of compounds H1 to H128; 9,10-bis(2-naphthyl)anthracene (ADN); 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN); 9,10-bis(2-naphthyl)-2-tert-butyl-anthracene (TBADN); 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP); 1,3-bis(9-carbazolyl)benzene (mCP); 1,3,5-tris(carbazolyl-9-yl)benzene (TCP); or any combination thereof:

[0381]

[0382]

[0383]

[0384]

[0385]

[0386]

[0387] Phosphorescent dopants

[0388] Phosphorescent dopants may include at least one transition metal as the center metal.

[0389] Phosphorescent dopants may include monodentate ligands, dipentate ligands, tridentate ligands, tetradentate ligands, pentadentate ligands, hexadentate ligands, or any combination thereof.

[0390] Phosphorescent dopants can be electrically neutral.

[0391] In one or more embodiments, the phosphorescent dopant may comprise an organometallic compound represented by formula 401:

[0392] Formula 401

[0393] M(L 401 ) xc1 (L 402 ) xc2

[0394] Formula 402

[0395]

[0396] In Equations 401 and 402,

[0397] M can 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)).

[0398] L 401 The ligand can be represented by Equation 402, and xc1 can be 1, 2, or 3, wherein when xc1 is 2 or greater, two or more L... 401 They may be essentially the same or different from each other.

[0399] L 402 It can be an organic ligand, and xc2 can be 0, 1, 2, 3, or 4, wherein when xc2 is 2 or greater, two or more L... 402 They may be essentially the same or different from each other.

[0400] X 401 and X 402 They can be nitrogen or carbon independently.

[0401] Ring A 401And Ring A 402 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0402] T 401 It can be a single bond (e.g., a single covalent bond), *-O-*', *-S-*', *-C(=O)-*', *-N(Q)-*', or a single bond (e.g., a single covalent bond). 411 )-*'、*-C(Q 411 (Q) 412 )-*'、*-C(Q 411 )=C(Q 412 )-*' or *-C(Q 411 )=*',

[0403] X 403 and X 404 Each can be an independent chemical bond (e.g., covalent or coordinate), O, S, N (Q) 413 ), B(Q) 413 ), P(Q 413 ), C(Q 413 (Q) 414 ) or Si(Q 413 (Q) 414 ),

[0404] Q 411 To Q 414 Each can be described as in Q1.

[0405] R 401 and R 402 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 401 (Q) 402 (Q) 403 -N(Q) 401 (Q) 402 -B(Q) 401 (Q) 402 -C(=O)(Q) 401 -S(=O)2(Q) 401 ) or -P(=O)(Q401 (Q) 402 ),

[0406] Q 401 To Q 403 Each can be described as in Q1.

[0407] xc11 and xc12 can each be an integer selected from 0 to 10 independently, and

[0408] In Equation 402, * and *' each indicate the binding site with M in Equation 401.

[0409] For example, in equation 402, i)X 401 It can be nitrogen and X 402 It can be carbon, or ii)X 401 and X 402 Each of them can be nitrogen.

[0410] In one or more embodiments, when xc1 in equation 401 is 2 or greater, two or more L 401 The two rings A in 401 Optionally via T as a linking group 402 Connected together, and / or two rings A 402 Optionally via T as a linking group 403 They are connected together (see, for example, compounds PD1 through PD4 and PD7). T 402 and T 403 Each can refer to T. 401 As described.

[0411] In Equation 401, L 402 It can be an organic ligand. For example, L... 402 It may include halogen groups, diketone groups (e.g., acetylacetone groups), carboxylic acid groups (e.g., pyridine carboxyl groups), -C (=O), isonitrile groups, -CN groups, phosphorus-containing groups (e.g., phosphin groups and / or phosphite groups, etc.) or any combination thereof.

[0412] Phosphorescent dopants may include, for example, one or any combination of compounds PD1 to PD39:

[0413]

[0414]

[0415]

[0416] Fluorescent dopants

[0417] Fluorescent dopants may include amine-containing compounds, styrene-containing compounds, compounds represented by Formula 501, or any combination thereof.

[0418] Formula 501

[0419]

[0420] In Equation 501,

[0421] Ar 501 L 501 To L 503 R 501 and R 502 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0422] xd1 to xd3 can each be independently 0, 1, 2, or 3, and

[0423] xd4 can be 1, 2, 3, 4, 5 or 6.

[0424] In one or more embodiments, Ar in Formula 501 501 It can be a fused ring group in which three or more monocyclic groups are fused together (e.g., anthracene, 1,2-benzophenanthrene and / or pyrene, etc.).

[0425] In one or more embodiments, xd4 in Formula 501 may be 2.

[0426] In one or more embodiments, the fluorescent dopant may include: one of compounds FD1 to FD37; DPVBi; DPAVBi; or any combination thereof:

[0427]

[0428]

[0429]

[0430] Delayed fluorescence materials

[0431] The emission layer may include a delayed fluorescence material.

[0432] In this paper, the delayed fluorescence material can be selected from compounds that can emit delayed fluorescence based on the delayed fluorescence emission mechanism.

[0433] Depending on the type or variety of other materials included in the emission layer, the delayed fluorescence material included in the emission layer can be used as a host or a dopant.

[0434] In one or more embodiments, the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material can be at least about 0 eV and no more than about 0.5 eV. When the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material is satisfied within the above range, an upconversion from the triplet state to the singlet state of the delayed fluorescent material can occur effectively or appropriately, and therefore, the light-emitting device 10 can have improved luminous efficiency.

[0435] In one or more embodiments, the delayed fluorescence material may include: i) comprising at least one electron-donating group (e.g., π-electron-rich C3-C). 60 Cyclic groups, such as carbazole groups, and at least one electron-withdrawing group (e.g., sulfoxide, cyano, and / or π-electron-deficient nitrogen-containing C1-C groups). 60 Materials containing cyclic groups, etc., ii) including C8-C materials containing at least two cyclic groups fused together with each other while sharing boron (B). 60 Materials with polycyclic groups.

[0436] Examples of delayed fluorescent materials may include at least one of compounds DF1 to DF14:

[0437]

[0438]

[0439] quantum dots

[0440] The emission layer may include quantum dots.

[0441] In this document, “quantum dot” refers to a crystal of a semiconductor compound and may include any suitable material capable of emitting one or more appropriate emission wavelengths of light depending on the size of the crystal.

[0442] The diameter of a quantum dot can be, for example, from about 1 nm to about 10 nm.

[0443] Quantum dots can be synthesized by wet chemical processes, metal-organic chemical vapor deposition (MOCVD) processes, molecular beam epitaxy (MBE) processes, or any suitable process similar to them.

[0444] Wet chemistry processes involve mixing precursor materials with an organic solvent and then growing quantum dot crystals. During quantum dot crystal growth, the organic solvent naturally acts as a dispersant coordinated on the surface of the quantum dot crystals and controls or selects the growth of the quantum dot crystals so that the growth can be controlled or selected using less expensive processes that are easier than vapor deposition methods (such as metal-organic chemical vapor deposition (MOCVD) and / or molecular beam epitaxy (MBE)).

[0445] 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.

[0446] Examples of group II-VI semiconductor compounds may include: binary compounds, such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe and / or MgS; ternary compounds, such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, Cd ZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe and / or MgZnS; quaternary compounds such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and / or HgZnSTe; or any combination thereof.

[0447] Examples of Group III-V semiconductor compounds may include: binary compounds, such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and / or InSb; ternary compounds, such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, and / or InPSb; quaternary compounds, such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and / or InAlPSb; or any combination thereof. In one or more embodiments, the Group III-V semiconductor compound may further include a Group II element. Examples of group III-V semiconductor compounds that further include group II elements may include InZnP, InGaZnP, and InAlZnP.

[0448] Examples of group III-VI semiconductor compounds may include: binary compounds such as GaS, GaSe, Ga2Se3, GaTe, InS, InSe, In2S3, In2Se3 and / or InTe; ternary compounds such as InGaS3 and / or InGaSe3; or any combination thereof.

[0449] Examples of group I-III-VI semiconductor compounds may include: ternary compounds, such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2 and / or AgAlO2; quaternary compounds, such as AgInGaS, AgInGaS2, AgInGaSe, AgInGaSe2, CuInGaS and / or CuInGaS2; or any combination thereof.

[0450] Examples of group IV-VI semiconductor compounds may include: binary compounds, such as SnS, SnSe, SnTe, PbS, PbSe and / or PbTe; ternary compounds, such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe and / or SnPbTe; quaternary compounds, such as SnPbSSe, SnPbSeTe and / or SnPbSTe; or any combination thereof.

[0451] Examples of Group IV elements or compounds may include: single elements, such as Si and / or Ge; binary compounds, such as SiC and / or SiGe; or any combination thereof.

[0452] Each element included in a multi-element compound (such as a binary, ternary, and / or quaternary compound) may exist in the particles at a substantially uniform or substantially non-uniform concentration.

[0453] In one or more embodiments, the quantum dot may have a single structure in which the concentration of each element in the quantum dot is substantially uniform, or it may have a core-shell dual structure. In one or more embodiments, the materials included in the core and the materials included in the shell may be different from each other.

[0454] The shell of a quantum dot can act as a protective layer to prevent or reduce the chemical transformation of the nucleus to maintain its semiconductor properties and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be a single layer or multiple layers. The interface between the nucleus and the shell can have a concentration gradient, where the concentration of elements present in the shell decreases towards the center of the nucleus.

[0455] Examples of shells for quantum dots may include oxides of metals, oxides of quasi-metals and / or oxides of nonmetals, semiconductor compounds, or combinations thereof. Examples of oxides of metals, oxides of quasi-metals and / or oxides of nonmetals may include: binary compounds, such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4 and / or NiO; ternary compounds, such as MgAl2O4, CoFe2O4, NiFe2O4 and / or CoMn2O4; or any combination thereof. Examples of semiconductor compounds may include: Group II-VI semiconductor compounds as described herein; Group III-V semiconductor compounds; Group III-VI semiconductor compounds; Group I-III-VI semiconductor compounds; Group IV-VI semiconductor compounds; or any combination thereof. In one or more embodiments, 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.

[0456] Quantum dots may have a full width at half maximum (FWHM) of an emission wavelength spectrum less than or equal to about 45 nm, less than or equal to about 40 nm, or, for example, less than or equal to about 30 nm. When the FWHM of a quantum dot is within any of these ranges, the quantum dot may have improved color purity and / or improved color reproducibility. In one or more embodiments, a wide viewing angle is improved because light emitted through the quantum dot is emitted in all directions.

[0457] In one or more embodiments, quantum dots may take the form of spherical, conical, multi-armed and / or cubic nanoparticles, nanotubes, nanowires, nanofibers and / or nanoplates.

[0458] Because the band gap can be adjusted by controlling the size of the quantum dots, light with one or more suitable wavelength bands can be obtained from the quantum dot emitting layer. Accordingly, by using quantum dots of different sizes, light-emitting devices that emit light with one or more suitable wavelength bands can be implemented. For example, the size of the quantum dots can be selected to emit red, green, and / or blue light. In one or more embodiments, the size of the quantum dots can be configured to emit white light through a combination of one or more suitable colors of light.

[0459] Electron transport region in interlayer 130

[0460] The electron transport region may have: i) a single-layer structure comprising a single layer (e.g., composed of a single layer) of a single material (e.g., composed of a single material), ii) a single-layer structure comprising a single layer (e.g., composed of a single layer) of multiple materials that are different from each other, or iii) a multilayer structure comprising multiple layers of multiple materials that are different from each other.

[0461] 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.

[0462] In one or more embodiments, the electron transport region may have an electron transport layer / electron injection layer structure, a hole blocking layer / electron transport layer / electron injection layer structure, an electron control layer / electron transport layer / electron injection layer structure, or a buffer layer / electron transport layer / electron injection layer structure, wherein the constituent layers of each structure are stacked sequentially from the emission layer in the order described.

[0463] The electron transport region (e.g., a buffer layer, hole blocking layer, electron control layer, and / or electron transport layer in the electron transport region) may include a nitrogen-containing C1-C layer containing at least one π-deficient electron. 60 Metal-free compounds with cyclic groups.

[0464] In one or more embodiments, the electron transport region may include a compound represented by Formula 601:

[0465] Formula 601

[0466] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 .

[0467] In Equation 601,

[0468] Ar 601 and L 601 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group,

[0469] xe11 can be 1, 2, or 3.

[0470] xe1 can be 0, 1, 2, 3, 4, or 5.

[0471] R 601 It can be unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 601 (Q) 602 (Q) 603 -C(=O)(Q) 601 -S(=O)2(Q) 601 ) or -P(=O)(Q 601 (Q) 602 ),

[0472] Q 601 To Q 603 Each can be described as in Q1.

[0473] xe21 can be 1, 2, 3, 4, or 5, and

[0474] Selected from Ar 601 L 601 and R 601 At least one of them can be independently unsubstituted or by at least one R. 10a Substituted π-electron-deficient nitrogen-containing C1-C 60 Cyclic groups.

[0475] In one or more embodiments, when xe11 in formula 601 is 2 or greater, two or more Ar 601 They can be linked together by a single bond (e.g., a single covalent bond).

[0476] In one or more embodiments, Ar in Formula 601 601 It can be unsubstituted or by at least one R 10a Substituted anthracene group.

[0477] In one or more embodiments, the electron transport region may include a compound represented by formula 601-1:

[0478] Formula 601-1

[0479]

[0480] In Equation 601-1,

[0481] X 614 It can be N or C(R) 614 ), X 615 It can be N or C(R) 615 ), X 616 It can be N or C(R) 616 ), and X 614 To X 616 At least one of them can be N,

[0482] L 611 To L 613 Each can refer to L. 601 As described,

[0483] xe611 to xe613 can each be described as follows, with reference to xe1.

[0484] R 611 To R 613 Each can refer to R. 601 As described, and

[0485] R 614 To R 616 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group.

[0486] In one or more embodiments, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 may each be 0, 1 or 2 independently.

[0487] The electron transport region may include one of compounds ET1 to ET46, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq3, BAlq, TAZ, NTAZ, or any combination thereof:

[0488]

[0489]

[0490]

[0491] The thickness of the electron transport region can be approximately to approximately For example, about to approximately When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, the hole blocking layer, and / or the electron control layer can each be independently approximately [missing information]. to approximately (For example, about to approximately Furthermore, the thickness of the electron transport layer can be approximately [missing information]. to approximately (For example, about to approximately When the thickness of the buffer layer, hole blocking layer, electronic control layer, electron transport layer, and / or electron transport region is within any of these ranges, satisfactory or appropriate electron transport characteristics can be obtained without significantly increasing the driving voltage.

[0492] In addition to the materials mentioned above, the electron transport region (e.g., the electron transport layer in the electron transport region) may further include a metallic material.

[0493] Metal-containing materials may include alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The metal ion in an alkali metal complex may be Li, Na, K, Rb, or Cs ions, and the metal ion in an alkaline earth metal complex may be Be, Mg, Ca, Sr, or Ba ions. Ligands coordinated with the metal ions of the alkali metal complex and / or the alkaline earth metal complex may include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof.

[0494] In one or more embodiments, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) and / or compound ET-D2:

[0495]

[0496] The electron transport region may include an electron injection layer that facilitates the injection of electrons from the second electrode 150. The electron injection layer may be in direct contact with the second electrode 150.

[0497] The electron injection layer may have: i) a monolayer structure comprising a single layer (e.g., composed of a single layer) comprising a single material (e.g., composed of a single material), ii) a monolayer structure comprising a single layer (e.g., composed of a single layer) comprising multiple materials that are different from each other, or iii) a multilayer structure comprising multiple layers comprising multiple materials that are different from each other.

[0498] The electron injection layer may include alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof.

[0499] Alkali metals may include Li, Na, K, Rb, Cs, or any combination thereof. Alkali earth metals may include Mg, Ca, Sr, Ba, or any combination thereof. Rare earth metals may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0500] Alkali metal compounds, alkaline earth metal compounds, and rare earth metal compounds may each independently include oxides, halides (e.g., fluorides, chlorides, bromides, and / or iodides, etc.) and / or tellurides of alkali metals, alkaline earth metals, and / or rare earth metals, or any combination thereof.

[0501] The alkali metal compound may include: alkali metal oxides, such as Li2O, Cs2O, and / or K2O; alkali metal halides, such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI; or any combination thereof. The alkaline earth metal compound may include alkaline earth metal oxides, such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying 0 < x < 1) and / or Ba x Ca 1-x O (where x is a real number satisfying 0 < x < 1). The rare earth metal compound may include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, or any combination thereof. In one or more embodiments, the rare earth metal compound may include lanthanide metal tellurides. Examples of lanthanide metal tellurides may include LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La2Te3, Ce2Te3, Pr2Te3, Nd2Te3, Pm2Te3, Sm2Te3, Eu2Te3, Gd2Te3, Tb2Te3, Dy2Te3, Ho2Te3, Er2Te3, Tm2Te3, Yb2Te3, and Lu2Te3.

[0502] The alkali metal complex, alkaline earth metal complex, and rare earth metal complex may each include i) one of the metal ions of the alkali metal, alkaline earth metal, and rare earth metal, and ii) a ligand bonded to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyl oxazole, hydroxyphenyl thiazole, hydroxyphenyl oxadiazole, hydroxyphenyl thiadiazole, hydroxyphenyl pyridine, hydroxyphenyl benzimidazole, hydroxyphenyl benzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0503] The electron injection layer may include (for example, consist of) the following: the alkali metal, alkaline earth metal, rare earth metal, alkali metal compound, alkaline earth metal compound, rare earth metal compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex, or any combination thereof as described above. In one or more embodiments, the electron injection layer may further include an organic material (for example, a compound represented by Formula 601).

[0504] In one or more embodiments, the electron-injected layer may include (e.g., composed of): i) an alkali metal compound (e.g., an alkali metal halide); ii) a) an alkali metal compound (e.g., an alkali metal halide); and b) an alkali metal, alkaline earth metal, rare earth metal, or any combination thereof. In one or more embodiments, the electron-injected layer may be a KI:Yb co-deposited layer, an RbI:Yb co-deposited layer, and / or a LiF:Yb co-deposited layer, etc.

[0505] When the electron injection layer further comprises organic materials, alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof may be uniformly (e.g., substantially uniformly) or non-uniformly (e.g., substantially non-uniformly) dispersed in the matrix comprising the organic materials.

[0506] The thickness of the electron injection layer can be approximately to approximately For example, about to approximately When the thickness of the electron injection layer is within any of the ranges mentioned above, satisfactory or appropriate electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0507] Second electrode 150

[0508] The second electrode 150 is disposed on the interlayer 130. The second electrode 150 may be a cathode serving as an electron injection electrode, and the material used to form the second electrode 150 may be a metal, alloy, conductive compound, or any combination thereof, each having a low work function.

[0509] The second electrode 150 may include lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, or any combination thereof. The second electrode 150 may be a transmission electrode, a transmission-reflection electrode, or a reflection electrode.

[0510] The second electrode 150 may have a single-layer structure or a multi-layer structure including multiple layers.

[0511] Capping layer

[0512] The first capping layer may be disposed outside the first electrode 110 and / or the second capping layer may be disposed 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 interlayer 130, and the second electrode 150 are stacked sequentially in the described order, or in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are stacked sequentially in the described order, or in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are stacked sequentially in the described order.

[0513] Light generated in the emitting layer of the interlayer 130 of the light-emitting device 10 can be extracted outward through a first electrode 110, which may be a semi-transparent electrode or a transmissive electrode, and a first capping layer. Light generated in the emitting layer of the interlayer 130 of the light-emitting device 10 can be extracted outward through a second electrode 150, which may be a semi-transparent electrode or a transmissive electrode, and a second capping layer.

[0514] The first and second capping layers can increase the external emission efficiency based on the principle of constructive interference. Correspondingly, the light extraction efficiency of the light-emitting device 10 is increased, thereby increasing the luminous efficiency of the light-emitting device 10.

[0515] Each of the first and second capping layers may include (at 589 nm) a material having a refractive index of 1.6 or greater.

[0516] The first capping layer and the second capping layer can each be an organic capping layer including organic materials, an inorganic capping layer including inorganic materials, or an organic-inorganic composite capping layer including both organic and inorganic materials.

[0517] At least one of the first and second capping layers may independently comprise a carbocyclic compound, a heterocyclic compound, an amino-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthyl phthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, heterocyclic compound, and / or amino-containing compound may optionally be substituted with substituents including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In one or more embodiments, at least one of the first and second capping layers may independently comprise an amino-containing compound.

[0518] In one or more embodiments, at least one selected from the first capping layer and the second capping layer may each independently include a compound represented by formula 201, a compound represented by formula 202, or any combination thereof.

[0519] In one or more embodiments, at least one selected from the first capping layer and the second capping layer may independently include one of compounds HT28 to HT33, one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0520]

[0521] membrane

[0522] The organometallic compound represented by Formula 1 may be included in one or more suitable films. According to one or more embodiments, films comprising the organometallic compound represented by Formula 1 may be provided. The film may be, for example, an optical component (or light control device) (e.g., a color filter, color conversion component, capping layer, light extraction efficiency enhancement layer, selective light absorption layer, polarizing layer, and / or content dot layer, etc.), a light-blocking component (e.g., a light-reflecting layer and / or a light-absorbing layer, etc.), or a protective component (e.g., an insulating layer and / or a dielectric layer, etc.).

[0523] electronic devices

[0524] The light-emitting device may be included in one or more suitable electronic devices. For example, the electronic device including the light-emitting device may be a light-emitting device and / or an authentication device, etc.

[0525] In addition to the light-emitting device, the electronic device (e.g., the light-emitting device) may further include i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and / or color conversion layer may be arranged in at least one direction of travel of the light emitted from the light-emitting device. For example, the light emitted from the light-emitting device may be blue light or white light. A more detailed description of the light-emitting device has been provided above. In one or more embodiments, the color conversion layer may include quantum dots. The quantum dots may be, for example, as described herein.

[0526] An electronic device may include a first substrate. The first substrate may include a plurality of sub-pixel regions, a color filter may include a plurality of color filter regions corresponding to the plurality of sub-pixel regions, and a color conversion layer may include a plurality of color conversion regions corresponding to the plurality of sub-pixel regions.

[0527] A pixel-defining film can be arranged between multiple sub-pixel regions to define each of the multiple sub-pixel regions.

[0528] The color filter may further include a plurality of color filter areas and a light-blocking pattern arranged between the plurality of color filter areas, and the color conversion layer may further include a plurality of color conversion areas and a light-blocking pattern arranged between the plurality of color conversion areas.

[0529] Multiple color filter regions (and / or multiple color conversion regions) 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. In one or more embodiments, 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 one or more embodiments, the multiple color filter regions (and / or multiple color conversion regions) 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 (e.g., may exclude) quantum dots. A more detailed description of quantum dots is provided herein. The first region, the second region, and / or the third region may each further include a scatterer.

[0530] In one or more embodiments, the light-emitting device can emit first light, a first region can absorb the first light to emit first-first-color light, a second region can absorb the first light to emit second-first-color light, and a third region can absorb the first light to emit third-first-color light. In this case, the first-first-color light, the second-first-color light, and the third-first-color light can have different maximum emission wavelengths. For example, the first light can be blue light, the first-first-color light can be red light, the second-first-color light can be green light, and the third-first-color light can be blue light.

[0531] 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 either the source electrode or the drain electrode may be electrically connected to either the first electrode or the second electrode of the light-emitting device.

[0532] Thin-film transistors may further include gate electrodes and / or gate insulating films, etc.

[0533] The active layer may include crystalline silicon, amorphous silicon, organic semiconductors and / or oxide semiconductors, etc.

[0534] The electronic device may further include a sealing portion for sealing the light-emitting device. The sealing portion may be disposed between the light-emitting device and a color filter and / or color conversion layer. The sealing portion allows light to be extracted from the light-emitting device to the outside, and simultaneously (e.g., synchronously) prevents or reduces the penetration of ambient air and / or moisture into the light-emitting device. The sealing portion may be a sealing substrate comprising a transparent glass substrate and / or a plastic substrate. The sealing portion may be a thin-film encapsulation layer comprising at least one of an organic layer and an inorganic layer. When the sealing portion is a thin-film encapsulation layer, the electronic device may be flexible.

[0535] In addition to color filters and / or color conversion layers, various functional layers may be arranged on the sealed portion, depending on the intended or desired use of the electronic device. Examples of functional layers may include a touchscreen layer and a polarizing layer. The touchscreen layer may be a pressure-sensitive touchscreen layer, a capacitive touchscreen layer, and / or an infrared touchscreen layer. The authentication device may be, for example, a biometric authentication device that authenticates an individual using biometric information of a living body (e.g., fingertip and / or pupil, etc.).

[0536] In addition to the light-emitting device described above, the authentication device may further include a biometric information collector.

[0537] Electronic devices may be applied to one or more suitable displays, light sources, lighting devices, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, video game consoles, medical tools (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasound diagnostic devices and / or endoscopic displays), fish finders, one or more suitable measuring tools, instruments (e.g., instruments for vehicles, aircraft and / or ships) and / or projectors, etc.

[0538] Electronic equipment

[0539] The light-emitting device may be included in one or more suitable electronic devices.

[0540] For example, electronic devices including light-emitting devices can be selected from flat panel displays, curved displays, computer monitors, medical monitors, televisions, billboards, indoor lights, outdoor lights, signal lights, head-up displays, fully transparent displays, partially transparent displays, flexible displays, rollable displays, foldable displays, retractable displays, laser printers, telephones, mobile phones, tablet computers, phablet computers, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, camcorders, viewfinders, microdisplays, 3D displays, virtual reality displays, augmented reality displays, vehicles, video walls including multiple displays spliced ​​together, theater screens, stadium screens, light therapy devices, and signs.

[0541] Because light-emitting devices have excellent or appropriate effects in terms of luminous efficiency and long lifespan, electronic devices and electronic equipment that include light-emitting devices can have the characteristics of appropriate high brightness, appropriate high resolution and appropriate low power consumption.

[0542] Figure 2 and Figure 3 Description

[0543] Figure 2 This is a schematic cross-sectional view of an electronic device according to one or more embodiments.

[0544] Figure 2 The electronic device includes a substrate 100, a thin-film transistor (TFT), a light-emitting device, and a sealing portion 300 that seals the light-emitting device.

[0545] The substrate 100 may be a flexible substrate, a glass substrate, and / or a metal substrate. A buffer layer 210 may be disposed on the substrate 100. The buffer layer 210 may prevent or reduce the penetration of impurities through the substrate 100 and may provide a flat (or substantially flat) surface on the substrate 100.

[0546] The TFT can be disposed 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.

[0547] The active layer 220 may include inorganic semiconductors (such as silicon and / or polysilicon), organic semiconductors and / or oxide semiconductors, and may include source regions, drain regions and channel regions.

[0548] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 may be disposed on the active layer 220, and the gate electrode 240 may be disposed on the gate insulating film 230.

[0549] The interlayer insulating film 250 may be disposed on the gate electrode 240. The interlayer insulating film 250 may be disposed between the gate electrode 240 and the source electrode 260 to insulate the gate electrode 240 from the source electrode 260, and disposed between the gate electrode 240 and the drain electrode 270 to insulate the gate electrode 240 from the drain electrode 270.

[0550] The source electrode 260 and the drain electrode 270 may be on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 may be formed to expose the source region and drain region of the active layer 220, and the source electrode 260 and the drain electrode 270 may be arranged to contact the exposed portions of the source region and drain region of the active layer 220.

[0551] The TFT can be electrically connected to a light-emitting device to drive the light-emitting device, and can be covered and protected by a passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or any combination thereof. The light-emitting device may be provided on the passivation layer 280. The light-emitting device includes a first electrode 110, a sandwich layer 130, and a second electrode 150.

[0552] The first electrode 110 may be disposed on the passivation layer 280. The passivation layer 280 may be disposed to expose a portion of the drain electrode 270 without completely covering the drain electrode 270, and the first electrode 110 may be disposed to connect to the exposed portion of the drain electrode 270.

[0553] A pixel defining film 290, including an insulating material, may be disposed on the first electrode 110. The pixel defining film 290 may expose a defined area or specific area of ​​the first electrode 110, and an interlayer 130 may be formed in the exposed area of ​​the first electrode 110. The pixel defining film 290 may be a polyimide-based organic film and / or a polyacrylic acid-based organic film. In some embodiments, at least some layers of the interlayer 130 may extend beyond the upper portion of the pixel defining film 290 to be arranged as a common layer.

[0554] The second electrode 150 may be disposed on the interlayer 130, and the capping layer 170 may be additionally formed on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

[0555] The sealing portion 300 may be located on the capping layer 170. The sealing portion 300 may be disposed on the light-emitting device to protect it from moisture and / or oxygen. The sealing portion 300 may include an inorganic film, which includes silicon nitride (SiN). x ), silicon dioxide (SiO) x Indium tin oxide, indium zinc oxide, or any combination thereof; organic membranes, including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate and / or polyacrylic acid), epoxy resins (e.g., aliphatic glycidyl ether (AGE)), or any combination thereof; or combinations of inorganic and organic membranes.

[0556] Figure 3 This is a schematic cross-sectional view of an electronic device according to one or more other embodiments.

[0557] Figure 3 electronic devices and Figure 2 The electronic devices are essentially the same, except that the light-shielding pattern 500 and the functional area 400 are additionally arranged on the sealing portion 300. The functional area 400 may be i) a color filter area, ii) a color conversion area, or iii) a combination of a color filter area and a color conversion area. In one or more embodiments, Figure 3 The light-emitting device included in the electronic device may be a series light-emitting device.

[0558] Figure 4 Description

[0559] Figure 4This is a schematic perspective view of an electronic device 1 including a light-emitting device according to one or more embodiments. As a device for displaying moving and / or still images, the electronic device 1 may be a portable electronic device (such as a mobile phone, smartphone, tablet PC, mobile communication terminal, e-notebook computer, e-reader, portable multimedia player (PMP), navigation and / or ultra-mobile PC (UMPC)), and one or more suitable products (such as a television, laptop computer, monitor, billboard and / or Internet of Things (IoT) device). The electronic device 1 may be a product as described above or a portion thereof. In one or more embodiments, the electronic device 1 may be a wearable device (such as a smartwatch, watch phone, eyeglass-type or eyeglass-like display or head-mounted display (HMD)), and / or a portion thereof. However, the embodiments are not limited thereto. In one or more embodiments, electronic device 1 may include a vehicle's dashboard, a center information display (CID) disposed on the center console and / or the vehicle's dashboard, an interior mirror display replacing the vehicle's side mirrors, an entertainment display for the vehicle's rear seats, a display disposed on the back of the front seats, a head-up display (HUD) mounted on the front of the vehicle or projected onto the windshield, and / or a computer-generated holographic augmented reality head-up display (CGH AR HUD). For ease of explanation, Figure 4 One or more implementation methods are described, wherein electronic device 1 is a smartphone.

[0560] Electronic device 1 may include a display area DA and a non-display area NDA outside the display area DA. The display device can implement an image by means of a plurality of pixel arrays arranged in two dimensions in the display area DA.

[0561] The non-display area NDA is an area where no image is displayed and may completely surround the display area DA. Drivers for providing electrical signals and / or power to display elements arranged in the display area DA may be placed in the non-display area NDA. Pads for electrically connecting electronic components and / or printed circuit boards may be placed in the non-display area NDA.

[0562] In electronic device 1, the length in the x-axis direction and the length in the y-axis direction may be different from each other. In one or more embodiments, such as Figure 4 As explained herein, the length in the x-axis direction may be less than the length in the y-axis direction. In one or more embodiments, the length in the x-axis direction may be the same as the length in the y-axis direction. In one or more embodiments, the length in the x-axis direction may be greater than the length in the y-axis direction.

[0563] Figure 5 and Figures 6A to 6C Description

[0564] Figure 5 This is a schematic diagram of the exterior of a vehicle 1000, which is an electronic device including a light-emitting device according to one or more embodiments. Figures 6A to 6C Each of the above is a schematic diagram of the interior of a vehicle 1000 according to one or more embodiments.

[0565] refer to Figure 5 , Figure 6A , Figure 6B and Figure 6C Vehicle 1000 can refer to one or more suitable devices used to move an object (such as a person, object, and / or animal) from a point of origin to a point of destination. Vehicle 1000 can include vehicles that travel on roads and / or tracks, vessels that move on oceans and / or rivers, and / or aircraft that fly in the air using the action of air.

[0566] Vehicle 1000 can travel on roads or tracks. Vehicle 1000 can move in a set direction or a specific direction based on the rotation of at least one wheel. In one or more embodiments, vehicle 1000 may include three-wheeled and / or four-wheeled vehicles, construction machinery, two-wheeled vehicles, prime movers, bicycles, and / or trains traveling on tracks.

[0567] Vehicle 1000 may include a body having an interior and an exterior, and a chassis, which houses the mechanical equipment required for drive, as other parts besides the body. The exterior of the body may include a front panel, hood, roof panel, rear panel, trunk, and / or pillars provided at the boundaries between the doors. The chassis of vehicle 1000 may include a power generation unit, a power transmission unit, a drive unit, a steering unit, a braking unit, a suspension unit, a transmission unit, a fuel unit, front and rear wheels, and / or left and right wheels.

[0568] Vehicle 1000 may include side window glass 1100, front window glass 1200, side mirror 1300, instrument panel 1400, center console 1500, passenger seat instrument panel 1600 and display device 2.

[0569] The side window glass 1100 and the front window glass 1200 can be separated by a pillar arranged between the side window glass 1100 and the front window glass 1200.

[0570] Side window 1100 may be mounted on the side of vehicle 1000. In one or more embodiments, side window 1100 may be mounted in a door of vehicle 1000. Multiple side window 1100s may be provided and may face each other. In one or more embodiments, side window 1100 may include a first side window 1110 and a second side window 1120. In one or more embodiments, the first side window 1110 may be arranged adjacent to (e.g., near) dashboard 1400. The second side window 1120 may be arranged adjacent to (e.g., near) passenger seat dashboard 1600.

[0571] In one or more embodiments, the side window panes 1100 may be spaced apart from each other in the x-axis direction or in a direction opposite to the x-axis direction. In one or more embodiments, the first side window pane 1110 and the second side window pane 1120 may be spaced apart from each other in the x-axis direction or in a direction opposite to the x-axis direction. For example, an imaginary straight line L connecting the side window panes 1100 may extend in the x-axis direction or in a direction opposite to the x-axis direction. In one or more embodiments, the imaginary straight line L connecting the first side window pane 1110 and the second side window pane 1120 may extend in the x-axis direction or in a direction opposite to the x-axis direction.

[0572] The front windshield 1200 can be installed at the front of the vehicle 1000. The front windshield 1200 can be arranged between the side windows 1100 facing each other.

[0573] The side mirror 1300 provides a rear view of the vehicle 1000 (e.g., a view of the rear portion of the vehicle 1000 and / or a view of the space behind the vehicle 1000). The side mirror 1300 may be mounted on the exterior of the vehicle body. In one or more embodiments, a plurality of side mirrors 1300 may be provided. Any one of the plurality of side mirrors 1300 may be arranged outside the first side window 1110. Another of the plurality of side mirrors 1300 may be arranged outside the second side window 1120.

[0574] The instrument panel 1400 may be positioned in front of the steering wheel. The instrument panel 1400 may include, without limitation, a tachometer, speedometer, coolant temperature gauge, fuel gauge, turn signal indicator, high beam indicator, warning lights, seat belt warning lights, odometer, driving recorder, automatic transmission selection indicator, door opening warning light, oil warning light and / or low fuel warning light.

[0575] The center console 1500 may include a control panel with multiple buttons for adjusting audio devices, air conditioning devices, and / or seat heaters. The center console 1500 may be located on one side of the instrument panel 1400.

[0576] The passenger seat instrument panel 1600 may be spaced apart from the instrument cluster 1400, and the center console 1500 may be arranged between the instrument cluster 1400 and the passenger seat instrument panel 1600. In one or more embodiments, the instrument cluster 1400 may be arranged corresponding to the driver's seat, and the passenger seat instrument panel 1600 may be arranged corresponding to the passenger seat. In one or more embodiments, the instrument cluster 1400 may be adjacent to (e.g., near) the first side window 1110, and the passenger seat instrument panel 1600 may be adjacent to (e.g., near) the second side window 1120.

[0577] In one or more embodiments, the display device 2 may include a display panel 3, and the display panel 3 may display images. The display device 2 may be arranged inside the vehicle 1000. In one or more embodiments, the display device 2 may be arranged between side window glass 1100s facing each other. The display device 2 may be arranged on at least one selected from the instrument panel 1400, the center console 1500, and the passenger seat instrument panel 1600.

[0578] Display device 2 may include organic light-emitting display devices, inorganic electroluminescent display devices, and / or quantum dot display devices, etc. Hereinafter, as an example of display device 2 according to one or more embodiments, an organic light-emitting display device including a light-emitting device will be described, but one or more suitable types (categories) of display devices as described herein may be used in the embodiments.

[0579] refer to Figure 6A The display device 2 may be mounted on the center console 1500. In one or more embodiments, the display device 2 may display navigation information. In one or more embodiments, the display device 2 may display information about audio settings, video settings, and / or vehicle settings.

[0580] refer to Figure 6B The display device 2 can be arranged on the instrument panel 1400. In this case, the instrument panel 1400 can display driving information, etc., through the display device 2. For example, the instrument panel 1400 can digitally display driving information, etc. The digitally operated instrument panel 1400 can digitally display vehicle information and / or driving information as images. In one or more embodiments, the tachometer pointer and gauges, as well as one or more appropriate warning light icons, can be displayed via digital signals.

[0581] refer to Figure 6CThe display device 2 may be arranged on the passenger seat instrument panel 1600. The display device 2 may be embedded in and / or arranged on the passenger seat instrument panel 1600. In one or more embodiments, the display device 2 arranged on the passenger seat instrument panel 1600 may display images related to the information displayed on the instrument panel 1400 and / or the information displayed on the center console 1500, without limitation. In one or more embodiments, the display device 2 arranged on the passenger seat instrument panel 1600 may display information different from the information displayed on the instrument panel 1400 and / or the information displayed on the center console 1500.

[0582] Manufacturing method

[0583] The layers constituting the hole transport region, the emission layer, and the electron transport region can be formed in a set area or specific region using one or more appropriate methods (such as vacuum deposition, spin coating, casting, Langmuir-Brookett (LB) deposition, inkjet printing, laser printing, and / or laser-induced thermal imaging).

[0584] When the layers constituting the hole transport region, the emitter layer, and the electron transport region are formed by vacuum deposition, the deposition can be carried out at a deposition temperature in the range of about 100°C to about 500°C, and at a deposition temperature of about 10°C. -8 To about 10 -3 The vacuum level within the range of Tor and in approximately to approximately The deposition rate is carried out within a range that depends on the material to be included in the layer to be formed and the structure of the layer to be formed.

[0585] Terminology limitations

[0586] As used in this article, the term "C3-C" 60 "Carbocyclic group" can refer to a cyclic group comprising only carbon atoms as cyclic atoms (e.g., composed only of carbon atoms as cyclic atoms) and having 3 to 60 carbon atoms, and as used herein by the term "C1-C". 60 A "heterocyclic group" can refer to a cyclic group having 1 to 60 carbon atoms and further including at least one heteroatom as a cyclic atom in addition to carbon atoms. (C3-C) 60 Carbocyclic groups and C1-C 60 The heterocyclic group can be a monocyclic group comprising one ring (e.g., composed of one ring) or a polycyclic group in which two or more rings are fused together. In one or more embodiments, C1-C 60 The number of cyclic atoms in a heterocyclic group can range from 3 to 61.

[0587] As used herein, the term "cyclic group" may include (e.g., simultaneously) C3-C 60Carbocyclic groups and C1-C 60 Both heterocyclic groups.

[0588] As used in this article, “π-electron-rich C3-C” 60 "Cyclic group" can refer to a cyclic group having 3 to 60 carbon atoms and excluding *-N=*' as the cyclic moiety, and as used herein, "a nitrogen-containing C1-C group lacking π electrons". 60 "Cyclic group" can refer to a heterocyclic group having 1 to 60 carbon atoms and including *-N=*' as the cyclic part.

[0589] In one or more embodiments,

[0590] C3-C 60 The carbocyclic group can be i) group T1 or ii) a fused ring group in which two or more groups T1 are fused together (e.g., C3-C). 60 The carbocyclic group can be cyclopentadienyl, adamantyl, norbornel, phenyl, pentanenyl, naphthyl, azulel, indaryl, acenaphthel, phenanthrene, anthrenel, fluoranyl, triphenylene, pyrene, 1,2-benzophenantyl, peryl, penfenyl, heptanenyl, tetraphenyl, framyl, hexaphenyl, pentaphenyl, rubiginyl, myristyl, ovoidyl, indene, fluorenyl, spirodifluorenyl, benzofluorenyl, indophenantyl, or indoanthryl.

[0591] C1-C 60 The heterocyclic group may be i) group T2, ii) a fused ring group in which two or more groups T2 are fused together, or iii) a fused ring group in which at least one group T2 and at least one group T1 are fused together (e.g., C1-C). 60The heterocyclic group can be pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzofuranyl, indole-carbazole, indole-carbazole, benzofuran-carbazole, benzothiophene-carbazole, benzothiophene-carbazole, benzoindole-carbazole, benzonaphthofuranyl, benzonaphthophene, benzonaphthophene, benzofuran-dibenzofuranyl, benzofuran-dibenzothiophene, benzothiophene-dibenzothiophene, pyrazolyl, imidazole, triazoleyl, oxazole The following groups are listed: benzopyrazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzooxazolyl, benzoisooxazolyl, benzothiazolyl, benzoisothiazolyl, pyridinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, quinoxolinyl, benzoquinoxolinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinel, cenolinyl, phthalazinyl, naphthinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiophene, azadibenzothiophene, and / or azadibenzofuranyl, etc.

[0592] C3-C rich in π electrons 60 The cyclic group may be i) group T1, ii) a fused ring group in which two or more groups T1 are fused together, iii) group T3, iv) a fused ring group in which two or more groups T3 are fused together, or v) a fused ring group in which at least one group T3 and at least one group T1 are fused together (e.g., π-electron-rich C3-C). 60 Cyclic groups can be C3-C 60 Carbocyclic, 1H-pyrrole, thiorrole, borocyclopentadienyl, 2H-pyrrole, 3H-pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiorrole, benzothiophene, benzofuranyl, carbazole, dibenzothiorrole, dibenzothiophene, dibenzofuranyl, indole-carbazole, indole-carbazole, benzofuran-carbazole, benzothiophene-carbazole, benzothiorrole-carbazole, benzoindole-carbazole, benzocarbazole, benzonaphthofuranyl, benzonaphthophene, benzonaphthorrole, benzofuran-dibenzofuranyl, benzofuran-dibenzothiophene and / or benzothiophene-dibenzothiophene, etc.

[0593] Nitrogen-containing C1-C lacking π electrons 60The cyclic group can be i) group T4, ii) a fused ring group in which two or more groups T4 are fused together, iii) a fused ring group in which at least one group T4 and at least one group T1 are fused together, iv) a fused ring group in which at least one group T4 and at least one group T3 are fused together, or v) a fused ring group in which at least one group T4, at least one group T1 and at least one group T3 are fused together (e.g., a nitrogen-containing C1-C group lacking π electrons). 60 The cyclic group can be pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, benzoisoxazolyl, benzothiazolyl, benzoisothiazolyl, pyridinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, quinoxolinyl, benzoquinoxolinyl, quinazolinyl, benzoquinoxolinyl, quinazolinyl, phenanthrolinyl, terpineyl, phthalazinyl, naphthinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiophene, azadibenzothiophene, and / or azadibenzofuranyl, etc.

[0594] Group T1 can be cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclobutenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cyclohexadienyl, cycloheptenyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptane), norbornyl, bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[2.2.2]octane, or phenyl.

[0595] The group T2 can be furanyl, thiopheneyl, 1H-pyrrolyl, thiopheneyl, borocyclopentadienyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathiazolyl, azaboracyclopentadienyl, pyridinyl, pyrimidinyl, pyrazinyl, pyrazinyl, triazinyl, tetraazinyl, pyrrolylalkyl, imidazolyl, dihydropyrrolyl, piperidinyl, tetrahydropyridinyl, dihydropyridinyl, hexahydropyrimidinyl, tetrahydropyrimidinyl, dihydropyrimidinyl, piperazinyl, tetrahydropyrazinyl, dihydropyrazinyl, tetrahydropyrazinyl, or dihydropyrazinyl.

[0596] Group T3 can be furanyl, thiophene, 1H-pyrrole, thiophene, or borocyclopentadienyl, and

[0597] The group T4 can be 2H-pyrrole, 3H-pyrrole, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, azirthiolyl, aziboranecyclopentadienyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or tetraazinyl.

[0598] As used in this article, the terms "cyclic group" and "C3-C" are similar to those used in other documents. 60 "Carbocyclic group", "C1-C" 60 Heterocyclic groups, π-electron-rich C3-C 60 "Cyclic groups" and / or "nitrogen-containing C1-C groups lacking π electrons" 60 "Cyclic group" can refer to a group fused with any cyclic group, monovalent group, and / or polyvalent group (e.g., divalent, trivalent, and / or tetravalent groups, etc.) according to the structure of the formula using the corresponding term. In one or more embodiments, "phenyl" can be benzo[a], phenyl, and / or phenylene, etc., which can be readily understood by those skilled in the art based on the structure of the formula including "phenyl".

[0599] Unit price C3-C 60 Carbocyclic groups and monovalent C1-C 60 Examples of heterocyclic groups may include C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups. Divalent C3-C 60 Carbocyclic groups and divalent C1-C 60 Examples of heterocyclic groups may include C3-C 10 Cycloalkylene, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkylene, C1-C 10 Heterocyclic alkenyl, C6-C 60 aryl, C1-C 60 Hypoaryl, divalent non-aromatic fused polycyclic groups and divalent non-aromatic fused heterocyclic groups.

[0600] As used in this article, the term "C1-C" 60"Alkyl" can refer to a monovalent group of a straight-chain or branched aliphatic hydrocarbon having 1 to 60 carbon atoms, and examples 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, isodel, sec-decyl, and tert-decyl. The term "C1-C" as used herein... 60 "alkylene" can refer to C1-C 60 Alkyl groups have the same structure as divalent groups.

[0601] As used in this article, the term "C2-C" 60 "Alkenyl" can refer to the group at C2-C 60 The alkyl group has at least one monovalent hydrocarbon group with a carbon-carbon double bond in the middle and / or at the end, and examples may include vinyl, propenyl, and butenyl groups. As used herein, the term "C2-C" is used... 60 "Alkenyl" can refer to C2-C 60 Alkenes are divalent groups with the same structure.

[0602] As used in this article, the term "C2-C" 60 "Alkyne group" can refer to the group at C2-C. 60 The alkyl group has at least one monovalent hydrocarbon group with a carbon-carbon triple bond in the middle and / or at the end, and examples may include ethynyl and propynyl groups. As used herein, the term "C2-C" is used... 60 "Isynyl group" can refer to C2-C 60 Alkynes are divalent groups with the same structure.

[0603] The term "C1-C" as used in this article 60 "Alkoxy" can refer to the group consisting of -OA 101 (where A) 101 For C1-C 60 Alkyl groups are monovalent groups, and examples of them may include methoxy, ethoxy, and isopropoxy.

[0604] As used in this article, the term "C3-C" 10 "Cycloalkyl" can refer to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and examples 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. The term "C3-C" as used herein... 10 "Cycloalkylene" can refer to C3-C 10Cycloalkyl groups have the same divalent structure.

[0605] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl" can refer to a monovalent cyclic group having 1 to 10 carbon atoms and further including at least one heteroatom as a cyclic atom in addition to the carbon atoms, and examples may include 1,2,3,4-oxatriazolyl, tetrahydrofuranyl, and tetrahydrothiopheneyl. The term "C1-C" as used herein... 10 "Heterocyclic alkyl" can refer to C1-C 10 Heterocyclic alkyl groups have the same divalent structure.

[0606] As used in this article, the term "C3-C" 10 "Cycloalkenyl" can refer to a monovalent cyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring, and being non-aromatic, and examples may include cyclopentenyl, cyclohexenyl, and cycloheptenyl. As used herein, the term "C3-C" is also relevant. 10 "Iridylene" can refer to C3-C 10 Cycloalkenyl groups are divalent groups with the same structure.

[0607] As used in this article, the term "C1-C" 10 "Heterocyclic alkenyl" can refer to a monovalent cyclic group having 1 to 10 carbon atoms, further including at least one heteroatom as a cyclic atom in addition to carbon atoms, and having at least one double bond in its ring. C1-C 10 Examples of heterocyclic alkenyl groups may include 4,5-dihydro-1,2,3,4-oxarizolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothiopheneyl. As used herein, the term "C1-C..." 10 "Heterocyclic alkenyl" can refer to C1-C 10 Heterocyclic alkenyl groups are divalent groups with the same structure.

[0608] As used in this article, the term "C6-C" 60 "Aryl" can refer to a monovalent group in a carbocyclic aromatic system having 6 to 60 carbon atoms, and as used herein in the term "C6-C". 60 "Aspartic" can refer to C6-C 60 Aryl groups are divalent groups with the same structure. (C6-C) 60 Examples of aryl groups include phenyl, pentanenyl, naphthyl, azulel, indole, acenaphthel, phenanthyl, phenanthryl, anthracene, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentanenyl, heptanenyl, tetraphenyl, framyl, hexaphenyl, pentaphenyl, rubiginyl, myristyl, and ovoleyl. When C6-C 60 Aryl and C6-C 60When each of the aryl groups independently comprises two or more rings, the two or more rings can fused together.

[0609] As used in this article, the term "C1-C" 60 "Heteroaryl" can refer to a monovalent group in a heterocyclic aromatic system having 1 to 60 carbon atoms and further including at least one heteroatom as a cyclic atom in addition to carbon atoms. The term "C1-C" is used herein. 60 "Hybrid aryl" can refer to C1-C 60 Heteroaryl groups have the same divalent structure. C1-C 60 Examples of heteroaryl groups may include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, benzo[a]quinolinyl, isoquinolinyl, benzo[a]isoquinolinyl, quinoxalinyl, benzo[a]quinoxalinyl, quinazolinyl, benzo[a]quinazolinyl, cyclolinyl, phenanthrolinel, phthalazinyl, and naphthidyl. When C1-C 60 heteroaryl and C1-C 60 When each heteroaryl group independently comprises two or more rings, the two or more rings can fused together.

[0610] As used herein, the term "monovalent nonaromatic fused polycyclic group" refers to a monovalent group having two or more rings fused together, with only carbon atoms (e.g., 8 to 60 carbon atoms) as cyclic atoms, and lacking aromaticity in its molecular structure when considered as a whole. Examples of monovalent nonaromatic fused polycyclic groups may include indenyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, indo[a]phenanthryl, and indo[a]anthrayl. As used herein, the term "divalent nonaromatic fused polycyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused polycyclic group.

[0611] As used herein, the term "monovalent nonaromatic fused heterocyclic group" can refer to a monovalent group having two or more rings fused together, further including at least one heteroatom as a cyclic atom in addition to carbon atoms (e.g., 1 to 60 carbon atoms), and having no aromaticity in its molecular structure when considered as a whole. Examples of monovalent non-aromatic fused heterocyclic groups may include pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzofuranyl, azacarbazole, azafluorenyl, azadibenzothiophene, azadibenzothiophene, azadibenzofuranyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, isothiazolyl, oxadiazolyl, thiazolyl Benzopyrazolyl, benzoimidazolyl, benzooxazolyl, benzothiazolyl, benzooxadiazolyl, benzothiadiazolyl, imidazopyridyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, indolecarbazolyl, indolocarbazolyl, benzofuranocarbazolyl, benzothiophenocarbazolyl, benzothiophenocarbazolyl, benzoindolocarbazolyl, benzocarbazolyl, benzonaphthiophenyl, benzonaphthiophenyl, benzofuranodibenzofuranyl, benzofuranodibenzothiophenyl, and benzothiophenodibenzothiophenyl. As used herein, the term "divalent nonaromatic fused heteropolycyclic group" can refer to a divalent group having the same structure as a monovalent nonaromatic fused heteropolycyclic group.

[0612] As used in this article, the term "C6-C" 60 "Aryloxy group" can refer to -OA 102 (where A) 102 For C6-C 60 Aryl), and as used herein by the term "C6-C" 60 "Arylthio" can refer to -SA 103 (where A) 103 For C6-C 60 Aryl).

[0613] As used in this article, the term "C7-C" 60 "Aryl group" can refer to -A 104 A 105 (where A) 104 For C1-C 54 Alkylene, and A 105 For C6-C 59 Aryl), and as used herein by the term "C2-C 60 "Heteroaryl" can refer to -A 106 A 107 (where A) 106 For C1-C59 Alkylene, and A 107 For C1-C 59 (Miscellaneous aromatic compounds).

[0614] As used in this article, the term "C3-C" 60 "Carbocyclic group" includes C3-C 50 carbonyl group, C3-C 40 carbonyl group, C3-C 30 carbonyl group, C3-C 20 carbonyl group or C3-C 10 carbon cyclo group;

[0615] The term "C1-C" 60 "Heterocyclic groups" include C1-C 50 Heterocyclic groups, C1-C 40 Heterocyclic groups, C1-C 30 Heterocyclic groups, C1-C 20 Heterocyclic groups or C1-C 10 Heterocyclic groups;

[0616] The term "C1-C" 60 "alkyl" includes C1-C 50 Alkyl, C1-C 30 Alkyl, C1-C 20 Alkyl or C1-C 10 alkyl;

[0617] The term "C2-C" 60 "Alkenyl" includes C2-C 30 alkenyl, C2-C 20 alkenyl or C2-C 10 alkenyl;

[0618] The term "C2-C" 60 "Alkyne group" includes C2-C 30 alkynyl group, C2-C 20 alkynyl or C2-C 10 alkynyl group;

[0619] The term "C1-C" 60 "Alkoxy" includes C1-C 30 Alkoxy, C1-C 20 Alkoxy or C1-C 10 Alkoxy;

[0620] The term "C6-C" 60 "Aryl" includes C6-C 50 Aryl, C6-C 40 Aryl, C6-C 30 Aryl, C6-C 20 Aryl or C6-C 15 Aryl;

[0621] The term "C1-C" 60 "Heteroary aryl" includes C1-C 50 heteroaryl, C1-C 40 heteroaryl, C1-C 30 heteroaryl, C1-C 20 heteroaryl or C1-C 10 Mixed aromatics;

[0622] "Monovalent non-aromatic fused polycyclic groups" include C8-C 60 Monovalent non-aromatic fused polycyclic groups, C8-C 50 Monovalent non-aromatic fused polycyclic groups, C8-C 40 Monovalent non-aromatic fused polycyclic groups, C8-C 30 Monovalent non-aromatic fused polycyclic groups or C8-C 20 Monovalent non-aromatic fused polycyclic groups;

[0623] The term "monovalent non-aromatic fused heterocyclic group" includes C1-C 60 Monovalent non-aromatic fused heterocyclic groups, C1-C 50 Monovalent non-aromatic fused heterocyclic groups, C1-C 40 Monovalent non-aromatic fused heterocyclic groups, C1-C 30 Monovalent non-aromatic fused heterocyclic groups or C1-C 20 Monovalent non-aromatic fused heterocyclic groups;

[0624] The term "C6-C" 60 "Aryloxy groups" include C6-C 50 Aryloxy group, C6-C 40 Aryloxy group, C6-C 30 Aryloxy group, C6-C 20 aryloxy or C6-C 15 aryloxy;

[0625] The term "C6-C" 60 "Arylthio" includes C6-C 50 Arylthio, C6-C 40 Arylthio, C6-C 30 Arylthio, C6-C 20 Aryl thiols or C6-C 15 Arylthio;

[0626] The term "C7-C" 60 "Aryl" includes C7-C 50 Aryl group, C7-C 40 Aryl group, C7-C 30 Aryl group, C7-C 20 Aryl or C7-C 15Aryl alkyl groups; and

[0627] The term "C2-C" 60 "Heteroaryl" includes C2-C 50 Heteroalkyl, C2-C 40 Heteroalkyl, C2-C 30 Heteroalkyl, C2-C 20 Heteroaryl or C2-C 15 Heteroalkyl groups.

[0628] As used in this article, the term "R" 10a "Can be:

[0629] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, or hydrazone;

[0630] Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 ) or any combination thereof;

[0631] Each of the following C3-Cs that are not substituted or are substituted by: 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 ) or any combination thereof; or

[0632] -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 ) or -P(=O)(Q 31 (Q) 32 ).

[0633] As used in this article, Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; or each unsubstituted or replaced by deuterium, -F, cyano, C1-C. 60 Alkyl, C1-C 60 C1-C substituted with alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, triazinyl, or any combination thereof 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C60 carbonyl group, C1-C 60 Heterocyclic group, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups.

[0634] As used herein, the term "heteroatom" can refer to any atom other than carbon and hydrogen. Examples of heteroatoms may include O, S, N, P, Si, B, Ge, Se, or any combination thereof.

[0635] As used herein, the term "transition metals in the first row" may refer to scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), and / or zinc (Zn), etc. The term "transition metals in the second row" as used herein may refer to yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), and / or cadmium (Cd), etc. The term "transition metals in the third row" as used herein may refer to hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), and / or gold (Au).

[0636] As used herein, the term "Ph" may refer to phenyl, "Me" may refer to methyl, "Et" may refer to ethyl, and "tert-Bu" or "Bu" may refer to ethyl. t "May refer to tert-butyl, and as used herein, the term "OMe" may refer to methyl ethyl ether.

[0637] As used herein, the term "biphenyl" may refer to "a phenyl group substituted with a phenyl group." For example, "biphenyl" may be a phenyl group having a C6-C2 configuration. 60 Aryl groups are substituted phenyl groups.

[0638] As used herein, the term "terphenyl" can refer to "a phenyl group substituted with a biphenyl group." For example, "terphenyl" can be a phenyl group having a C6-C substituted biphenyl group. 60 Aryl-substituted C6-C 60 Aryl groups are substituted phenyl groups.

[0639] Unless otherwise specified, as used herein, *, *' and *” each refer to the bonding site of an adjacent atom in the corresponding formula or part.

[0640] In this paper, the terms "x-axis," "y-axis," and "z-axis" are not limited to the three axes in an orthogonal coordinate system and can be interpreted in a broader sense than the three axes in an orthogonal coordinate system mentioned above. For example, the x-axis, y-axis, and z-axis can describe axes that are orthogonal to each other, or they can describe axes in different directions that are not orthogonal to each other.

[0641] In this specification, "integers selected from 0 to 10" refers to integers selected from 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. The above description of numerical ranges also applies to any other numerical ranges appearing in this specification, such as integers selected from 0 and 1, integers selected from 0 to 2, integers selected from 0 to 3, integers selected from 0 to 4, integers selected from 0 to 5, integers selected from 0 to 6, integers selected from 0 to 7, integers selected from 0 to 8, integers selected from 0 to 9, and integers selected from 0 to 10, etc.

[0642] The organometallic compounds and light-emitting devices according to one or more embodiments will be described in more detail below with reference to the following synthesis examples and embodiments. The phrase "using B instead of A" used in describing the synthesis examples means using substantially the same molar equivalent of B instead of A.

[0643] Example

[0644] Synthesis Example 1: Synthesis of Compound 1

[0645]

[0646] Synthesis of intermediate 1-1

[0647] 2-Bromo-4H-dithieno[2,3-b:2',3'-d]pyrrole (5.0 g, 0.019 mol), 2-bromo-4-(tert-butyl)pyridine (3.73 g, 0.017 mol), copper iodide (I) (0.92 g, 0.005 mol), 1-methyl-1H-imidazolium (1.43 g, 0.017 mol), and lithium tert-butoxide (2.33 g, 0.029 mol) were placed in 70 mL of anhydrous toluene, and the mixture was heated under reflux in an inert atmosphere for 18 hours. The resulting product was washed with ethyl acetate, H2O, and NH4OH, and then extracted with CH2Cl2 to obtain an organic layer. The filtrate was purified using a silica filter, and then the solvent was removed under reduced pressure to give 4.25 g of intermediate 1-1 (yield: 56%).

[0648] Synthesis of intermediates 1-2

[0649] Intermediate 1-1 (4 g, 0.01 mol), pyridinecarboxylic acid (0.63 g, 0.005 mol), copper iodide (I) (0.39 g, 0.002 mol), and tripotassium phosphate (4.34 g, 0.02 mol) were placed in and dissolved in 70 mL of anhydrous DMSO. The flask was filled with inert gas, and 3-chlorophenol (1.45 g, 0.011 mol) was added. The mixture was then reacted at 145 °C for 18 hours. After the reaction was terminated, the reaction product was cooled, and H2O was added to form a precipitate. The precipitate was filtered, dissolved in CH2Cl2, and then washed with brine. Water was removed from the organic layer by adding MgSO4. The resulting product was concentrated under reduced pressure and purified by column chromatography at a CH2Cl2:hexane ratio of 2:1 (v / v) to obtain 3.55 g of intermediate 1-2 as a white solid (yield: 79%).

[0650] Synthesis of intermediates 1-3

[0651] Intermediate 1-2 (3.5 g, 0.008 mol), N1-([1,1':3',1"-terphenyl]-2′-yl)phenyl-1,2-diamine hydrochloride (3 g, 0.008 mol), [PdCl(C3H5)]2 (0.09 g, 0.2 mmol), di-tert-butyl(1-methyl-2,2-diphenylcyclopropyl)phosphine (0.34 g, 0.001 mol), and sodium tert-butoxide (2.68 g, 0.028 mol) were placed in and dissolved in 60 mL of anhydrous toluene, and the mixture was heated under reflux in an inert atmosphere for 18 hours. The solvent was removed under reduced pressure, and intermediate 1-3 was purified by column chromatography at a CH2Cl2:hexane ratio of 4:1 (v / v) to obtain 4.6 g of intermediate 1-3 as a white solid (yield: 78%).

[0652] Synthesis of intermediates 1-4

[0653] Intermediate 1-3 (4.5 g, 0.003 mol) was placed in and dissolved in 50 mL of triethyl orthoformate, followed by the addition of HCl (0.27 g, 0.007 mol), and the mixture was reacted at 80 °C for 12 hours. The solvent was removed from the product under reduced pressure to obtain 3.3 g of intermediate 1-4 (yield: 69%).

[0654] Synthesis of Compound 1

[0655] Intermediates 1-4 (3 g, 0.004 mol) and silver oxide (I,III) (0.44 g, 0.002 mol) were added to and dissolved in 50 mL of 1,2-dichloroethane, and the mixture was then reacted at room temperature for 18 hours. After removing the solvent under reduced pressure, 30 mL of 1,2-dichlorobenzene and Pt(COD)Cl2 (1.43 g, 0.004 mol) were added, and the mixture was heated under reflux for 48 hours. After removing the solvent under reduced pressure, and then purified by column chromatography at a CH2Cl2:hexane ratio of 2:1 (v / v), 2.67 g of compound 1 was obtained (yield: 74%).

[0656] Synthesis Example 2: Synthesis of Compound 2

[0657] Compound 2 was synthesized in essentially the same manner as in Synthesis Example 1, except that 2-bromo-4H-dithieno[3,2-b:2',3'-d]pyrrole was used instead of 2-bromo-4H-dithieno[2,3-b:2',3'-d]pyrrole (2.93 g, yield: 81.4%) in the synthesis of intermediate 1-1.

[0658] Synthesis Example 3: Synthesis of Compound 8

[0659] Compound 8 was synthesized in essentially the same manner as in Synthesis Example 1, except that 2-bromo-4H-benzo[4,5]thieno[3,2-b]thieno[2,3-d]pyrrole was used instead of 2-bromo-4H-dithieno[2,3-b:2',3'-d]pyrrole in the synthesis of intermediate 1-1, and (Z)-N2-([1,1':3',1”-terphenyl]-2'-yl)but-2-ene-2,3-diamine hydrochloride was used instead of N1-([1,1':3',1"-terphenyl]-2′-yl)phenyl-1,2-diamine hydrochloride (2.02 g, yield: 56.5%).

[0660] Synthesis Example 4: Synthesis of Compound 73

[0661] Compound 73 was synthesized in essentially the same manner as in Synthesis Example 1, except that 2-bromo-4H-difurano[2,3-b:2',3'-d]pyrrole was used instead of 2-bromo-4H-dithieno[2,3-b:2',3'-d]pyrrole (2.11 g, yield: 58%) during the synthesis of intermediate 1-1.

[0662] Synthesis Example 5: Synthesis of Compound 146

[0663] Compound 146 was synthesized in essentially the same manner as in Synthesis Example 1, except that 6-bromo-4H-furano[3,2-b]thieno[2,3-d]pyrrole was used instead of 2-bromo-4H-dithieno[2,3-b:2',3'-d]pyrrole (2.53 g, yield: 65.1%) during the synthesis of intermediate 1-1.

[0664] Synthesis Example 6: Synthesis of Compound 217

[0665] Compound 217 was synthesized in essentially the same manner as in Synthesis Example 1, except that 2-bromo-4H-furano[3,2-b]thieno[3,2-d]pyrrole was used instead of 2-bromo-4H-dithieno[2,3-b:2',3'-d]pyrrole (2.54 g, yield: 70.3%) during the synthesis of intermediate 1-1.

[0666] For the compounds synthesized in Synthesis Examples 1 to 6, measurements were taken. 1 ¹H NMR and high-resolution mass spectrometry (HR-MS) were used, and the results are shown in Table 1. Those skilled in the art can easily identify the synthetic methods for compounds other than those in Synthetic Examples 1 to 6 by referring to the synthetic routes and starting materials.

[0667] Table 1

[0668]

[0669]

[0670] Evaluation Example 1

[0671] Using the methods described in Table 2, the LUMO (lowest unoccupied molecular orbital) energy level, HOMO (highest occupied molecular orbital) energy level, band gap, and [other parameters] of the compounds in the above synthetic examples were measured. 3 The values ​​of MLCT (metal-to-ligand charge transfer) are shown in Table 3.

[0672] Table 2

[0673]

[0674] Table 3

[0675]

[0676] Example 1

[0677] A 15Ω / cm anode is formed on it. 2 The ITO glass substrate (a Corning product) is cut to a size of 50mm × 50mm × 0.7mm, ultrasonically treated with isopropanol and pure water for 5 minutes each, cleaned by irradiating it with ultraviolet light and exposing it to ozone for 30 minutes, and then mounted on a vacuum deposition equipment.

[0678] The compound HT3 was vacuum deposited onto the anode to form a structure with... A hole transport layer of a certain thickness was formed, and compound HT40 was vacuum deposited on the hole transport layer to form a hole transport layer with a certain thickness. A launch auxiliary layer of a certain thickness.

[0679] Compounds H125, H126, and compound 1 (dopant) were vacuum deposited on an emission-assisted layer in a weight ratio of 45:45:10 to form a layer with... The thickness of the emission layer.

[0680] Compound ET37 was vacuum deposited onto the emitter layer to form a structure with... A buffer layer of a certain thickness was formed, and compounds ET46 and Liq were vacuum-deposited onto the buffer layer in a 5:5 weight ratio to form a buffer layer with [missing information]. An electron transport layer of a certain thickness was then formed. Subsequently, Yb was vacuum deposited onto the electron transport layer to form an electron transport layer with [missing information]. An electron-injected layer of a certain thickness was formed, and Ag and Mg were vacuum-deposited on it in a 5:5 weight ratio to form a layer with... A cathode of a certain thickness is used to complete the manufacturing of the light-emitting device.

[0681]

[0682]

[0683] Examples 2 to 4, and Comparative Examples 1 and 2

[0684] The light-emitting devices of Examples 2 to 6, and Comparative Examples 1 and 2, were manufactured in substantially the same manner as in Example 1, except that the composition of the dopant in Example 1 was adjusted as shown in Table 4.

[0685] Evaluation Example 2

[0686] To evaluate the characteristics of the light-emitting devices manufactured in Examples 1 to 6 and Comparative Examples 1 and 2, at a density of 10 cd / m², 2The driving voltage, current efficiency (luminous efficiency), device lifetime, and maximum emission wavelength were measured at the specified brightness, and the results are shown in Table 4. The driving voltage of the light-emitting device was measured using a source meter (Keithley Instruments, 2400 series), and the current efficiency was measured using a CS-2000 luminance meter (Konica Minolta). In one or more embodiments, to measure device lifetime, the relative lifetime (T0) was calculated as the time taken to reach 95% of the initial brightness in Comparative Example 1 compared to the time taken to reach 95% of the initial brightness in Examples 1 to 6 and Comparative Example 2. 95 ).

[0687] Table 4

[0688]

[0689]

[0690] Comparative compound 1

[0691]

[0692] Comparative compound 2

[0693]

[0694] By using organometallic compounds represented by Formula 1, it is possible to manufacture light-emitting devices with suitable high luminous efficiency and long lifespan, as well as high-quality electronic devices and electronic equipment including light-emitting devices.

[0695] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and are not intended for limiting purposes. The description of features or aspects in each embodiment should generally be considered in light of other similar features or aspects that may be used in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that one or more suitable changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims and their equivalents.

Claims

1. A light-emitting device comprising: a first electrode; a second electrode facing the first electrode; a sandwich layer between the first electrode and the second electrode and including an emission layer; and an organometallic compound represented by Formula 1: Formula 1 In Formula 1, M is platinum, palladium, cobalt, gold, nickel, silver, or copper, X1to X4are each independently C or N, CY1, CY2, and CY4 are each independently C3-C 60 carbocyclyl or C1-C 60 heterocyclyl, L1to L3are each independently a single bond, *-N(R5)-*, *-B(R5)-*, *-P(R5)-*, *-C(R5)(R6)-*, *-Si(R5)(R6)-*, *-Ge(R5)(R6)-*, *-S-*', *-Se-*', *-O-*', *-C(=O)-*, *-S(=O)-*, *-S(=O)2-*', or *-C(=S)-*, where * and *' each indicate a bonding site with an adjacent atom, T1is O, S, or Se, T2and T3are each independently a single bond, O, S, or Se, at least one selected from T2and T3is not a single bond, a1, a2, and a4are each independently an integer selected from 0 to 10, deuterium, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amidine group, a hydrazine group, or a hydrazone group; R1, R2, R 31 R 32 R4 through R6 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), Optional, R 31 and R 32 They bond to each other to form unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group, R 10a is:

2. The light-emitting device according to claim 1, wherein the first electrode is an anode, Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 ) or any combination thereof; Each of the following C3-Cs that are not substituted or are substituted by: 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 ) or any combination thereof; or -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 ) or -P(=O)(Q 31 )(Q 32 ), and Q1to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 are each independently: hydrogen; deuterium; -F; -CI; -Br; -I; hydroxyl; cyano; nitro; or C1-C 60 alkyl, C1-C 60 alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof, unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C7-C 60 aralkyl, or C2-C 60 heteroaralkyl. the second electrode is a cathode, the sandwich layer further includes 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, the hole transport region includes a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer, or any combination thereof, and the electron transport region includes a hole blocking layer, an electron transport layer, an electron injection layer, an electron control layer, or any combination thereof.

3. The light-emitting device according to claim 1, wherein the organometallic compound represented by Formula 1 is in the sandwich layer.

4. The light-emitting device according to claim 1, wherein the organometallic compound represented by Formula 1 is in the emission layer.

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

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

7. The electronic device according to claim 6, further including a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof.

8. An electronic equipment including the light-emitting device according to any one of claims 1 to 5. ​ 9. The electronic device of claim 8, wherein the electronic device is selected from the group consisting of flat panel displays, curved displays, computer monitors, medical monitors, televisions, billboards, room lights, outdoor lights, signal lights, head-up displays, fully transparent displays, partially transparent displays, flexible displays, rollable displays, foldable displays, stretchable displays, laser printers, telephones, mobile phones, tablet computers, phablet computers, personal digital assistants, wearable devices, laptop computers, digital cameras, video cameras, viewfinders, micro-displays, 3D displays, virtual reality displays, augmented reality displays, vehicles, video walls comprising multiple displays tiled together, theater screens, stadium screens, light therapy devices, and signs.

10. An organometallic compound represented by Formula 1: Formula 1: wherein, in Formula 1, M is platinum, palladium, cobalt, gold, nickel, silver, or copper, X1to X4are each independently C or N, * and *' each indicate a bonding site with an adjacent atom, T1is O, S, or Se, T2and T3are each independently a single bond, O, S, or Se, at least one selected from T2and T3is not a single bond, a1, a2, and a4are each independently an integer selected from 0 to 10, R1is selected from the group consisting of deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone, R2is selected from the group consisting of deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone, R3is selected from the group consisting of deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone, R4is selected from the group consisting of deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone, R5and R6are each independently selected from the group consisting of deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone, L1to L3are each independently a single bond, *-N(R5)-*', *-C(R5)(R6)-*', *-Si(R5)(R6)-*', or *-O-*', and L4is selected from the group consisting of deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, or hydrazone.

11. The organometallic compound of claim 10, wherein M is platinum.

12. The organometallic compound of claim 10, wherein L1to L3are each independently a single bond, *-N(R5)-*', *-C(R5)(R6)-*', *-Si(R5)(R6)-*', or *-O-*'.

13. The organometallic compound of claim 10, wherein the bond between X1and M and the bond between X4and M are each a coordination bond, and the bond between X2and M and the bond between X3and M are each a covalent bond. CY1, CY2, and CY4 are each independently C3-C 60 carbocyclyl or C1-C 60 heterocyclyl, ​ L1to L3are each independently a single bond, *-N(R5)-*, *-B(R5)-*, *-P(R5)-*, *-C(R5)(R6)-*, *-Si(R5)(R6)-*, *-Ge(R5)(R6)-*, *-S-*, *-Se-*, *-O-*, *-C(=O)-*, *-S(=O)-*, *-S(=O)2-*, or *-C(=S)-*, wherein, ​ ​ ​ ​ ​ R1, R2, R 31 R 32 R4 through R6 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), Optional, R 31 and R 32 They bond to each other to form unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic group, R 10a is: ​ Each of the following C1-C that is not substituted or is substituted: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 ) or any combination thereof; Each of the following C3-Cs that are not substituted or are substituted by: 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 60 carbonyl group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 Heteroaryl, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 ) or any combination thereof; or -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 ), or -P(=O)(Q 31 )(Q 32 ), and Q1to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 are each independently: hydrogen; deuterium; -F; -CI; -Br; -I; hydroxyl; cyano; nitro; or C1-C 60 alkyl, C1-C 60 alkoxy, phenyl, biphenyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, triazinyl, or any combination thereof, unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl, C1-C 60 alkoxy, C3-C 60 carbocyclyl, C1-C 60 heterocyclyl, C7-C 60 aralkyl, or C2-C 60 heteroaralkyl. ​ ​ ​ 14. The organometallic compound according to claim 10, wherein CY1, CY2, and CY4 are each independently cyclopentadienyl, adamantyl, norbornel, phenyl, pentanenyl, naphthyl, azuleyl, indaryl, acenaphthel, phenanthreneyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthreneyl, peryleneyl, pentanyl, heptanenyl, tetraphenyl, framyl, hexaphenyl, pentaphenyl, rubiginyl, keratyl, ovoleyl, Indene, fluorene, spirodifluorene, benzo[fluorene], indo[phenanthroline], indo[anthrayl], pyrrole, thiophene, furanyl, indole, benzo[indole], naphtho[indole], isoindole, benzo[isoindole], naphtho[isoindole], benzo[thiophene], benzo[furanyl], carbazole, dibenzo[thiophene], dibenzo[furanyl], indo[carbazole], indole[carbazole], benzo[furanyl], benzo[thiophene], benzo[thiophene], benzo[thiophene], benzo[thiophene], carbazole Benzindolocarbazolyl, benzocarbazolyl, benzonaphthiophenel, benzonaphthiophenel, benzofuranodibenzofuranlyl, benzofuranodibenzothiophenel, benzothiophene dibenzothiophenel, pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, benzopyrazolyl, benzimidazolyl, benzooxazolyl, benzoisooxazolyl, benzothiazolyl, benzoisothiazolyl, pyrazolyl The following are compounds: pyridyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cyclolinyl, phthalazinyl, naphthinyl, imidazopyridyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazoyl, azafluorenyl, azadibenzothiopheneyl, or azadibenzofuranyl.

15. The organometallic compound according to claim 10, wherein i) T2 is a single bond and T3 is not a single bond, or ii) T3 is a single bond, and T2 is not a single bond.

16. The organometallic compound according to claim 10, wherein the group represented by is a group represented by any one of Formula 2-1 to Formula 2-4: and in formula 2-1 to formula 2-4, X3, R 31 and R 32 each as defined in formula 1, T1 to T3 are each independently O, S, or Se. Y1 is C(Z1) or N, Y2 is C(Z2) or N, Y3 is C(Z3) or N, and Y4 is C(Z4) or N. Z1to Z4are each independently as in Formula 1 with reference to R 10a as defined, and *, *' and *” each indicate a bonding site selected from one of L3, M and L2 in Equation 1.

17. The organometallic compound of claim 10, wherein the group represented by is a group represented by Formula 3-1 or Formula 3-2: and In equations 3-1 and 3-2, X1 is as described in Equation 1. Y 11 is C(Z 11 ) or N, Y 12 is C(Z 12 ) or N, Y 13 is C(Z 13 ) or N, and Y 14 is C(Z 14 ) or N, R 15 to R 17 and Z 11 to Z 14 each independently is as defined in formula 1 with reference to R1, and * and *' indicate the binding sites with M and L1 in Equation 1, respectively.

18. The organometallic compound according to claim 10, wherein the organometallic compound represented by formula 1 comprises at least one group represented by formula 4: Formula 4 and In Equation 4, R 41 to R 44 each as defined in reference to R 10a in formula 1, n41 and n42 are each integers selected from 1 to 5. n43 is an integer selected from 1 to 3. n44 is an integer selected from 1 to 4. b1 is an integer selected from 0 to 10, and * Indicates the bonding site with adjacent atoms.

19. The organometallic compound of claim 10, wherein R1, R2, R 31 , R 32 and R4 through R6 are each independently hydrogen, deuterium, -F, or cyano. Unsubstituted or substituted C1-C groups with deuterium, -F, cyano, or any combination thereof 20 Alkyl; or each unsubstituted or substituted phenyl, naphthyl, terphenyl, pyridyl, dibenzofuranyl, dibenzothiophenyl, carbazolyl, azadibenzofuranyl, azadibenzothiophenyl, or azacarbazolyl: deuterium, -F, cyano, C1-C 20 alkyl, deuterated C1-C 20 alkyl, deuterated C1-C 20 alkyl, deuterated C1-C 20 alkyl, deuterated C1-C alkyl, deuterated C1-C 20. The organometallic compound of claim 10, wherein the organometallic compound represented by Formula 1 is selected from the group consisting of Compound 1 to Compound 288: ###0001### Compound 1 Compound 2 Compound 3 Compound 4 Compound 5 Compound 6 Compound 7 Compound 8 Compound 9 Compound 10 Compound 11 Compound 12 Compound 13 Compound 14

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