Organic metal compound and organic light-emitting device comprising the same

Abstract

Provided are an organic metal compound represented by Formula 1 and an organic light-emitting device including the organic metal compound. The organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer located between the first electrode and the second electrode and including an emission layer, wherein the organic layer includes an organic metal compound represented by Formula 1, wherein M 1 , Ring A 1 To Ring A 4 , Y 1 To Y 4 、T 1 To T 4 , L 1 To L 4 、a1 to a4、Ar 1 , R 1 To R 7 and b1 to b4 are the same as those defined in the specification.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2019-0057598 filed on May 16, 2019, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0002] One or more embodiments relate to an organometallic compound and an organic light emitting device including the organometallic compound. Background Art

[0003] The organic light emitting device is a self-emissive device that produces full-color images, and compared with other devices in the related art, the organic light emitting device has a wide viewing angle, a high contrast ratio, a short response time, and shows excellent characteristics in terms of brightness, driving voltage, and response speed.

[0004] In an example, an organic light-emitting device may include a first electrode located on a substrate and a hole transport region, an emission layer, an electron transport region, and a second electrode sequentially located on the first electrode. Holes provided from the first electrode may move toward the emission layer through the hole transport region, and electrons provided from the second electrode may move toward the emission layer through the electron transport region. Carriers such as holes and electrons recombine in the emission layer to generate excitons. These excitons transition (e.g., transition or relaxation) from an excited state to a ground state, thereby generating light. Summary of the invention

[0005] One or more embodiments include a novel organometallic compound and an organic light emitting device including the organometallic compound.

[0006] Additional aspects of the embodiments will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the presented embodiments.

[0007] One aspect of an embodiment of the present disclosure provides an organometallic compound represented by Formula 1:

[0008] Formula 1

[0009]

[0010] In formula 1,

[0011] M 1 can be selected from platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) and thulium (Tm),

[0012] Ring A 1To Ring A 4 can be independently selected from C 5 -C 60 Carbocyclic and C 1 -C 60 Heterocyclic group,

[0013] Y 1 To Y 4 can all independently be N or C,

[0014] T 1 To T 4 may be independently selected from a single bond, O and S,

[0015] L 1 To L 4 can be independently selected from a single bond, *-O-*', *-S-*', *-C(R 8 )(R 9 )-*'、*-C(R 8 )=*'、*=C(R 9 )-*'、*-C(R 8 )=C(R 9 )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R 8 )-*'、*-N(R 8 )-*'、*-P(R 8 )-*'、*-Si(R 8 )(R 9 )-*' and *-Ge(R 8 )(R 9 )-*',

[0016] a1 to a4 may each independently be an integer from 0 to 3,

[0017] When a1 is 0, ring A 1 and Ring A 2 They will not be connected to each other. When a2 is 0, ring A 2 and Ring A 3 They will not be connected to each other. When a3 is 0, ring A 3 and Ring A 4 will not be connected to each other, and when a4 is 0, ring A 4 and Ring A 1 They won't connect to each other.

[0018] Ar 1 Can be selected from substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 Heteroaryl, substituted or unsubstituted C 1 -C 60 Heteroaryloxy, substituted or unsubstituted C 1 -C 60 heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group,

[0019] R 1 To R 9 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 Heteroaryl, substituted or unsubstituted C 1 -C 60 Heteroaryloxy, substituted or unsubstituted C 1 -C 60 heteroarylthio, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 )、-B(Q 1 )(Q 2 )、-N(Q 1 )(Q 2 )、-P(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O)(Q 1 )、-S(=O) 2 (Q 1 )、-P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ),

[0020] R 8 and R 1 , R 8 and R 2 , R 8 and R 3 , R 8 and R 4 or R 8 and R 9 may be optionally linked to form a substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0021] b1 to b4 may each independently be an integer from 1 to 8,

[0022] * and *' both represent the binding sites with adjacent atoms.

[0023] Substituted C 1 -C 60 Alkyl, substituted C 2 -C 60 Alkenyl, substituted C 2 -C 60 Alkynyl, substituted C 1 -C 60 Alkoxy, substituted C 3 -C 10 Cycloalkyl, substituted C 1 -C 10 Heterocycloalkyl, substituted C 3 -C 10 Cycloalkenyl, substituted C 1 -C 10 Heterocycloalkenyl, substituted C 6 -C 60 Aryl, substituted C 6 -C 60 Aryloxy, substituted C 6 -C 60 Arylthio, substituted C 1 -C 60 Heteroaryl, substituted C 1 -C 60 Heteroaryloxy, substituted C 1 -C 60 Heteroarylthio, substituted C 5 -C 60 Carbocyclic, substituted C 1 -C 60 At least one substituent in the heterocyclic group, the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic condensed heteropolycyclic group may be selected from:

[0024] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl and C 1 -C 60 Alkoxy;

[0025] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 ) and -P(=O)(Q 11 )(Q 12 ) selected from at least one of C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl and C 1 -C 60 Alkoxy;

[0026] C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic condensed heteropolycyclic groups, biphenyl groups, and terphenyl groups;

[0027] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -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 ) and -P(=O)(Q 21 )(Q 22 ) selected from at least one of the C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic condensed heteropolycyclic groups; and

[0028] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32)、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ),and

[0029] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, substituted with C 1 -C 60 Alkyl C 6 -C 60 Aryl, substituted with C 6 -C 60 Aryl C 6 -C 60 Aryl, terphenyl, C 1 -C 60 Heteroaryl, substituted with C 1 -C 60 Alkyl C 1 -C 60 Heteroaryl, substituted with C 6 -C 60 Aryl C 1 -C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic condensed heteropolycyclic groups.

[0030] Another aspect of an embodiment of the present disclosure provides an organic light-emitting device including: a first electrode; a second electrode facing the first electrode; and an organic layer located between the first electrode and the second electrode and including an emission layer, wherein the organic layer includes at least an organic metal compound. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] These and / or other aspects of the embodiments will become apparent and more easily understood through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 is a schematic diagram of the structure of an organic light emitting device according to an embodiment;

[0033] Figure 2 is a schematic diagram of the structure of an organic light emitting device according to another embodiment;

[0034] Figure 3 is a schematic diagram of a structure of an organic light emitting device according to another embodiment; and

[0035] Figure 4 is a schematic diagram of the structure of an organic light emitting device according to another embodiment. DETAILED DESCRIPTION

[0036] With reference now to the embodiment of the present disclosure in more detail, examples of the embodiments of the present disclosure are shown in the accompanying drawings, wherein the same reference numerals always represent the same elements. In this regard, the present embodiment may have different forms and should not be construed as being limited to the description set forth herein. Therefore, the following only describes the embodiments with reference to the accompanying drawings to explain the various aspects of the embodiments described herein. As used herein, the term "and / or" includes any combination and all combinations of one or more of the related listed items. When a statement such as "at least one (kind / person) of ... " is after a column of elements (elements), what is modified is the element (element) of the entire column, rather than modifying the individual elements (elements) in the column.

[0037] One aspect of an embodiment of the present disclosure provides an organometallic compound represented by Formula 1:

[0038] Formula 1

[0039]

[0040] M in Formula 1 1 It can be selected from platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb) and thulium (Tm).

[0041] In one embodiment, M 1 It can be selected from Pt, Pd, Cu, Ag and Au.

[0042] For example, M 1 It may be Pt, but the embodiments of the present disclosure are not limited thereto.

[0043] Y in Formula 1 1 , Y 2 , Y 3 and Y 4 Each may independently be N or C.

[0044] In one embodiment, in Formula 1,

[0045] Y 1 , Y 2 and Y 3 Can be C, and Y 4 Can be N;

[0046] Y 1 , Y 2 and Y 4 Can be C, and Y 3 Can be N;

[0047] Y 1 , Y 3 and Y 4 Can be C, and Y 2 Can be N;

[0048] Y 2 , Y 3 and Y 4 Can be C, and Y 1 Can be N;

[0049] Y 1 and Y 4 Can be C, and Y 2 and Y 3 Can all be N;

[0050] Y 1 and Y 4 Can be both N and Y 2 and Y 3 Can all be C;

[0051] Y 1 and Y 2 Can be C, and Y 3 and Y 4 Can all be N;

[0052] Y 1 and Y 2 Can be both N and Y 3and Y 4 Can all be C;

[0053] Y 1 and Y 3 Can be C, and Y 2 and Y 4 Can be all N; or

[0054] Y 1 and Y 3 Can be both N and Y 2 and Y 4 They can all be C.

[0055] In one embodiment, Y 1 Can be N, and Y 1 With T 1 The key between or Y 1 With M 1 The bond between them can be a coordinate bond (also called a coordinate covalent bond or a dative bond).

[0056] In one embodiment, Y 2 and Y 3 They can all be C.

[0057] In one embodiment, Y 4 Can be C, and Y 4 With T 4 The key between or Y 4 With M 1 The bond between them can be a coordination bond.

[0058] In one or more embodiments, Y 3 and Y 4 They can all be C.

[0059] In Formula 1, Ring A 1 To Ring A 4 can be independently selected from C 5 -C 60 Carbocyclic and C 1 -C 60 Heterocyclic group.

[0060] In one embodiment, Ring A 1 To Ring A 4 can be independently selected from a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a benzo[9,10]phenanthrene ring, a pyrene ring, ring, cyclopentadiene ring, 1,2,3,4-tetrahydronaphthalene ring, furan ring, thiophene ring, silole ring, indene ring, fluorene ring, indole ring, carbazole ring, benzofuran ring, dibenzofuran ring, benzothiophene ring, dibenzothiophene ring, benzosilole ring, dibenzosilole ring, indenopyridine ring, indolopyridine ring, benzofuranopyridine ring, benzothienopyridine ring, benzothiorrolopyridine ring, indenopyrimidine ring, indolopyrimidine ring, benzofuranopyrimidine ring, benzothienopyrimidine ring, benzothiorrolopyrimidine ring, dihydropyridine ring, pyridine ring, pyrimidine ring, pyrazine ring, pyridazine ring, triazine ring, quinoline ring, isoquinoline ring, quinoxaline ring, quinazoline ring, phenanthroline ring, pyrrole ring, pyrazole ring, imidazole ring, 2,3-dihydroimidazole ring, triazole ring, 2,3-dihydrotriazole ring, oxazole ring, isoxazole ring, thiazole ring, isothiazole ring, oxadiazole ring, thiadiazole ring, benzopyrazole ring, benzimidazole ring, 2,3-dihydrobenzimidazole ring, imidazopyridine ring, 2,3-dihydroimidazopyridine ring, imidazopyrimidine ring, 2,3-dihydroimidazopyrimidine ring, imidazopyrazine ring, 2,3-dihydroimidazopyrazine ring, benzoxazole ring, benzothiazole ring, benzoxadiazole ring, benzothiadiazole ring, 5,6,7,8-tetrahydroisoquinoline ring and 5,6,7,8-tetrahydroquinoline ring.

[0061] In one embodiment, Ring A 1 To Ring A 4 can be independently represented by one selected from Formula 2-1 to Formula 2-43:

[0062]

[0063]

[0064] In Formula 2-1 to Formula 2-43,

[0065] X 21 To X 23 can be independently selected from C(R 24 ) and C-*, where from X 21 To X 23 At least two of the selected ones may both be C-*,

[0066] X 24 Can be N-*, and X 25 and X 26 can be independently selected from C(R 24 ) and C-*, where from X 25 and X 26 At least one of the selected ones may be C-*,

[0067] X 27 and X 28 can be independently selected from N, N(R 25) and N-*, and X 29 Can be selected from C(R 24 ) and C-*, wherein i) from X 27 and X 28 At least one of the selected ones may be N-*, and X 29 Can be C-*, or ii) X 27 and X 28 Can all be N-*, and X 29 It can be C(R 24 ),

[0068] R 21 To R 25 can be independently combined with R in formula 1 1 To R 4 The same definition,

[0069] b21 can be selected from 1, 2 and 3,

[0070] b22 can be selected from 1, 2, 3, 4 and 5,

[0071] b23 can be selected from 1, 2, 3 and 4,

[0072] b24 can be selected from 1 and 2, and

[0073] *Indicates the binding site with the adjacent atom.

[0074] In one embodiment, Ring A 4 It may be a group represented by one selected from Formula 3-1 and Formula 3-2:

[0075]

[0076] In formula 3-1 and formula 3-2,

[0077] Y 31 To Y 36 can be independently N or C (R 4 ),

[0078] R 31 Can be combined with R 4 are defined identically, and

[0079] * and *' both indicate the binding sites with adjacent atoms.

[0080] In one embodiment, Ring A 1 To Ring A 3 can be independently selected from a benzene ring, a naphthalene ring, a pyridine ring, a pyrimidine ring, a pyrazine ring, a pyridazine ring, a triazine ring, a quinoline ring, an isoquinoline ring, a quinoxaline ring and a quinazoline ring,

[0081] Ring A4 may be an imidazole ring or a benzimidazole ring, and

[0082] T in Formula 1 1 To T 4 may each be independently selected from a single bond, *-O-*' and *-S-*'.

[0083] In one embodiment, in Formula 1, T 1 To T 4 They can all be single bonds at the same time;

[0084] T 1 can be selected from O and S, and T 2 To T 4 They can all be single bonds;

[0085] T 2 can be selected from O and S, and T 1 , T 3 and T 4 They can all be single bonds;

[0086] T 3 can be selected from O and S, and T 1 , T 2 and T 4 can be all single bonds; or

[0087] T 4 can be selected from O and S, and T 1 , T 2 and T 3 They can all be single bonds.

[0088] For example, in Formula 1, T 1 To T 4 They can all be single bonds at the same time.

[0089] In one embodiment, Y 1 With T 1 The key between or Y 1 With M 1 The bond between them can be a coordination bond.

[0090] In one or more embodiments, Y 2 With T 2 The key between or Y 2 With M 1 The bond between them can be a covalent bond.

[0091] In one or more embodiments, Y 3 With T 3 The key between or Y 3 With M 1 The bond between them can be a covalent bond.

[0092] In one or more embodiments, Y 4 With T 4 The key between or Y 4 With M 1 The bond between them can be a coordination bond.

[0093] In formula 1, L 1 To L 4 can be independently selected from a single bond, *-O-*', *-S-*', *-C(R 8 )(R 9 )-*'、*-C(R 8 )=*'、*=C(R 9 )-*'、*-C(R 8 )=C(R 9 )-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R 8 )-*'、*-N(R 8 )-*'、*-P(R 8 )-*'、*-Si(R 8 )(R 9 )-*' and *-Ge(R 8 )(R 9 )-*'.

[0094] In one embodiment, L 1 To L 4 can be independently selected from a single bond, *-O-*', *-S-*', *-N(R 8 )-*'、*-C(R 8 )(R 9 )-*'、*-Si(R 8 )(R 9 )-*' and *-B(R 8 )-*'.

[0095] In one embodiment, when L in Formula 1 2 *-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 9 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0096] When L in Formula 1 3*-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 9 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 a heterocyclic group, and

[0097] When L in Formula 1 4 *-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 9 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group.

[0098] In one or more embodiments, when L in Formula 1 2 *-N(R 8 )-*'、*-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 3 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0099] When L in Formula 1 3 *-N(R 8 )-*'、*-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 3 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0100] When L in Formula 1 3 *-N(R 8 )-*'、*-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 4 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0101] When L in Formula 1 4 *-N(R 8 )-*'、*-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 4 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 a heterocyclic group, and

[0102] When L in Formula 1 4 *-N(R 8 )-*'、*-C(R 8 )(R 9 )-*' or *-Si(R 8 )(R 9 )-*', R 8 and R 1 Can be linked to form substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group.

[0103] In one embodiment, L in Formula 1 1 To L 4 can be independently selected from a single bond, *-O-*', *-S-*', *-C(R 8 )(R 9 )-*'、*-C(R 8 )=*'、*=C(R 9 )-*'、*-B(R 8 )-*'、*-N(R8 )-*'、*-Si(R 8 )(R 9 )-*' and *-P(R 8 )-*'.

[0104] In one embodiment, L in Formula 1 1 and L 3 may each independently be a single bond.

[0105] In one embodiment, L in Formula 1 2 Can be selected from *-O-*', *-S-*', *-C(R 8 )(R 9 )-*' and *-N(R 8 )-*'.

[0106] In one embodiment, L in Formula 1 2 It may be selected from *-O-*' and *-S-*'.

[0107] In Formula 1, a1 to a4 may each independently be an integer of 0 to 3. When a1 is 0, Ring A 1 and Ring A 2 They will not be connected to each other. When a2 is 0, ring A 2 and Ring A 3 They will not be connected to each other. When a3 is 0, ring A 3 and Ring A 4 They will not be connected to each other. When a4 is 0, ring A 4 and Ring A 1 They won't connect to each other.

[0108] a1 means L 1 When a1 is 2 or more, two or more L 1 a2, a3 and a4 may each independently be the same as defined in conjunction with a1.

[0109] In one embodiment, a1, a2, and a3 may all be 1.

[0110] In one embodiment, a4 may be zero.

[0111] Ar in Formula 1 1 Can be selected from substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60Alkoxy, substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 Heteroaryl, substituted or unsubstituted C 1 -C 60 Heteroaryloxy, substituted or unsubstituted C 1 -C 60 a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group.

[0112] In one embodiment, Ar in Formula 1 1 Can be selected from:

[0113] C 1 -C 20 Alkyl and C 1 -C 20 Alkoxy;

[0114] The C groups are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, phenyl and biphenyl. 1 -C 20 Alkyl, C 2 -C 20 Alkenyl and C 1 -C 20 Alkoxy;

[0115] Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, oxazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, and indolocarbazolyl; and

[0116] All are substituted with deuterium, -F, -Cl, -Br, -I, cyano, C 1 -C 20 Alkyl, C 2 -C 20 Alkenyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazole yl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothioyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothioyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothioyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, indolocarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32 ) is at least one selected from cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, oxazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl and indolocarbazolyl, and

[0117] Q 31 To Q 33 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, C 1 -C 60 Heteroaryloxy, C 1 -C 60a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a C substituted with at least one selected from deuterium, -F and cyano 1 -C 60 alkyl, C substituted with at least one selected from deuterium, -F and cyano 6 -C 60 Aryl, biphenyl and terphenyl.

[0118] In one embodiment, Ar in Formula 1 1 Can be selected from:

[0119] methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, vinyl, propenyl, butenyl, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, isobutoxy, tert-butoxy and trimethylsilyl;

[0120] methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, vinyl, propenyl, butenyl, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, sec-butoxy, isobutoxy, tert-butoxy, and trimethylsilyl, each of which is substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, and cyano; and

[0121] A group represented by one selected from Formula 5-1 to Formula 5-26 and Formula 6-1 to Formula 6-55:

[0122]

[0123]

[0124]

[0125] In Formulas 5-1 to 5-26 and 6-1 to 6-55,

[0126] Y 31 Can be O, S, C (Z 34 )(Z 35 )、N(Z 34 ) or Si(Z 34 )(Z 35 ),

[0127] Z 31 , Z 32 , Z 34 and Z 35 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 2-C 20 Alkenyl, C 2 -C 20 Alkynyl, C 1 -C 20 alkoxy, trimethylsilyl, triethylsilyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, phenanthryl, anthracenyl, perylenyl, pyridyl, pyrimidinyl, carbazolyl and triazinyl,

[0128] e2 can be 1 or 2,

[0129] e3 can be an integer from 1 to 3,

[0130] e4 can be an integer from 1 to 4,

[0131] e5 can be an integer from 1 to 5,

[0132] e6 can be an integer from 1 to 6,

[0133] e7 can be an integer from 1 to 7,

[0134] e9 can be an integer from 1 to 9, and

[0135] *Indicates the binding site with the adjacent atom.

[0136] In one embodiment, Ar in Formula 1 1 Can be selected from:

[0137] methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl;

[0138] Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl, all of which are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and cyano;

[0139] phenyl, naphthyl, and pyridyl; and

[0140] The substituted groups are deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl (-Si(CH 3 ) 3 ) is at least one selected from phenyl, naphthyl and pyridyl.

[0141] In one embodiment, Ar in Formula 1 1 Can be selected from:

[0142] n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl groups, each of which is substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and cyano;

[0143] methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl;

[0144] phenyl, naphthyl, and pyridyl; and

[0145] The substituted groups are deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl (-Si(CH 3 ) 3 ) is at least one selected from phenyl, naphthyl and pyridyl.

[0146] R in Formula 1 1 To R 9 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , substituted or unsubstituted C 1 -C 60 Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 Heteroaryl, substituted or unsubstituted C 1 -C 60 Heteroaryloxy, substituted or unsubstituted C 1 -C60 heteroarylthio, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 1 )(Q 2 )(Q 3 )、-B(Q 1 )(Q 2 )、-N(Q 1 )(Q 2 )、-P(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O)(Q 1 )、-S(=O) 2 (Q 1 )、-P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ),

[0147] R 8 and R 1 , R 8 and R 2 , R 8 and R 3 , R 8 and R 4 or R 8 and R 9 may be optionally linked to form a substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group.

[0148] In one embodiment, R in Formula 1 1 To R 9 Can be independently selected from:

[0149] Hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , C 1 -C 20 Alkyl and C 1 -C 20 Alkoxy;

[0150] The C groups are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, phenyl and biphenyl.1 -C 20 Alkyl and C 1 -C 20 Alkoxy;

[0151] Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzosilolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzosilyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzosilyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthosilyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, and indolocarbazolyl;

[0152] All are substituted with deuterium, -F, -Cl, -Br, -I, cyano, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazole yl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothioyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothioyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothioyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, indolocarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32 ) is at least one selected from cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, oxazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, and indolocarbazolyl; and

[0153] -Si(Q 1 )(Q 2 )(Q 3 )、-B(Q 1 )(Q 2 )、-N(Q 1 )(Q 2 )、-P(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O)(Q 1 )、-S(=O) 2 (Q 1 )、-P(=O)(Q 1 )(Q 2 ) and -P(=S)(Q 1 )(Q 2 ),and

[0154] Q 1 To Q 3 and Q 31 To Q 33 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, C 1 -C 60 Heteroaryloxy, C 1 -C 60 a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a C substituted with at least one selected from deuterium, -F and cyano 1 -C 60 alkyl, C substituted with at least one selected from deuterium, -F and cyano 6 -C 60 Aryl, biphenyl and terphenyl.

[0155] In one embodiment, from R in Formula 1 1 , R 3 and R 4 At least one of the selected ones may be selected from:

[0156] Deuterium, -F, -Cl, -Br, -I, cyano, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl;

[0157] Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl, all of which are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and cyano;

[0158] phenyl, naphthyl, and pyridyl; and

[0159] Phenyl, naphthyl and pyridyl are all substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl.

[0160] In Formula 1, b1 to b4 may each independently be an integer of 1 to 8.

[0161] b1 represents R 1 The number of, where, when b1 is 2 or greater, two or more R 1 b2, b3 and b4 may each independently be the same as defined in conjunction with b1.

[0162] Substituted C 5 -C 60 Carbocyclic, substituted C 1 -C 60 Heterocyclic, substituted C 1 -C 60 Alkyl, substituted C 2 -C 60 Alkenyl, substituted C 2 -C 60 Alkynyl, substituted C 1 -C 60 Alkoxy, substituted C 3 -C 10 Cycloalkyl, substituted C 1 -C 10 Heterocycloalkyl, substituted C 3 -C 10 Cycloalkenyl, substituted C 1 -C 10 Heterocycloalkenyl, substituted C 6 -C 60 Aryl, substituted C 6 -C 60 Aryloxy, substituted C 6 -C 60 Arylthio, substituted C 1 -C 60 Heteroaryl, substituted C 1 -C 60 Heteroaryloxy, substituted C 1 -C 60 At least one substituent of the heteroarylthio group, the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic condensed heteropolycyclic group may be selected from:

[0163] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl and C 1 -C 60 Alkoxy;

[0164] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 ) and -P(=O)(Q 11 )(Q 12 ) selected from at least one of C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl and C 1 -C 60 Alkoxy;

[0165] C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic condensed heteropolycyclic groups, biphenyl groups, and terphenyl groups;

[0166] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -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 ) and -P(=O)(Q 21 )(Q 22 ) selected from at least one of the C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic condensed heteropolycyclic groups; and

[0167] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ),and

[0168] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, substituted with C 1 -C 60 Alkyl C 6 -C 60 Aryl, substituted with C 6 -C 60 Aryl C 6 -C 60 Aryl, terphenyl, C 1 -C 60 Heteroaryl, substituted with C 1 -C 60 Alkyl C 1 -C60 Heteroaryl, substituted with C 6 -C 60 Aryl C 1 -C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic condensed heteropolycyclic groups.

[0169] In one embodiment, the organometallic compound may be represented by Formula 1A or Formula 1B:

[0170] Formula 1A

[0171]

[0172] Formula 1B

[0173]

[0174] In Formula 1A and Formula 1B,

[0175] Here, M 1 , L 2 ,Ar 1 and R 5 To R 7 may all independently be the same as described elsewhere,

[0176] R 1a To R 1d can be independently combined with R 1 The same definition,

[0177] R 2a and R 2b can be independently combined with R 2 The same definition,

[0178] R 3a To R 3c can be independently combined with R 3 are defined the same as

[0179] R 4a To R 4e can be independently combined with R 4 The definition is the same.

[0180] In one embodiment, the organometallic compound may be represented by Formula 1A-1 or Formula 1B-1:

[0181] Formula 1A-1

[0182]

[0183] Formula 1B-1

[0184]

[0185] In Formula 1A-1 and Formula 1B-1,

[0186] Here, M 1 , L 2 and R 5 To R 7 may all independently be the same as described elsewhere,

[0187] R 1a To R 1d can be independently combined with R 1 The same definition,

[0188] R 2a and R 2b can be independently combined with R 2 The same definition,

[0189] R 3a To R 3c can be independently combined with R 3 The same definition,

[0190] R 4a To R 4e can be independently combined with R 4 The same definition,

[0191] X 1 Can be N or C (R 5a ), X 2 Can be N or C (R 5b ), X 3 Can be N or C (R 5c ), X 4 Can be N or C (R 5d ), X 5 Can be N or C (R 5e ),and

[0192] R 5a To R 5e can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 2 -C 20 Alkenyl, C 2 -C 20 Alkynyl, C 1 -C 20 Alkoxy, trimethylsilyl, triethylsilyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, phenanthryl, anthracenyl, perylenyl, pyridyl, pyrimidinyl, carbazolyl and triazinyl.

[0193] In one embodiment, R in Formula 1A-1 and Formula 1B-1 5a To R 5e At least one of the selected ones can be selected from C 1 -C 20 Alkyl, C 2 -C 20 Alkenyl, C 2 -C 20 Alkynyl, C 1 -C 20 Alkoxy, trimethylsilyl, triethylsilyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, phenanthryl, anthracenyl, perylenyl, pyridyl, pyrimidinyl, carbazolyl and triazinyl.

[0194] In one embodiment, the organometallic compound can be selected from Compound 1 to Compound 12, but the embodiments of the present disclosure are not limited thereto:

[0195]

[0196]

[0197] The organometallic compound represented by Formula 1 has a structure in which the ligand is represented by Ar 1 The substituent represented by Ar 1 Thus, the formation of an exciplex can be prevented (or the possibility of the formation of an exciplex can be reduced), and the ligand and the metal M 1 The bond energy between the metal and the pyridine of the ligand can be increased, thereby improving the stability of the compound. In the case of a similar compound without a substituent, the bond between the metal and the pyridine of the ligand may be easily dissociated, thereby reducing its life span. On the contrary, when the substituent is introduced, the pyridine molecule of the ligand can be prevented from partially rotating (or the degree or rate of such rotation can be reduced), thereby enhancing the bond with the metal M. 1 Therefore, by preventing or reducing the emission of long-wavelength light due to the formation of an exciplex when applied to an organic light-emitting device, energy transfer can be improved, driving voltage can be reduced, brightness and luminous efficiency can be increased, high color purity can be achieved, and life characteristics can be improved.

[0198] The organometallic compound may be configured to emit blue light. For example, the organometallic compound may be configured to emit blue light (bottom emission CIE 9000) having a maximum emission wavelength of about 400 nm or more and less than about 500 nm (e.g., a maximum emission wavelength of about 420 nm or more and about 490 nm or less). x,yColor coordinates, 0.100, 0.050-0.080), but the embodiments of the present disclosure are not limited thereto. Therefore, the organic metal compound represented by Formula 1 can be suitable for manufacturing an organic light-emitting device configured to emit blue light.

[0199] The synthesis method of the organometallic compound represented by Formula 1 will be readily apparent to one of ordinary skill in the art after reading the present disclosure by referring to the following examples.

[0200] At least one organic metal compound represented by Formula 1 may be used between a pair of electrodes of an organic light-emitting device. For example, the organic metal compound may be included in an emission layer. The organic metal compound included in the emission layer may be used as a dopant. In one embodiment, the organic metal compound represented by Formula 1 may be used as a material for a cap layer located outside a pair of electrodes of the organic light-emitting device.

[0201] Therefore, another aspect of an embodiment of the present disclosure provides an organic light-emitting device, which includes: a first electrode; a second electrode facing the first electrode; and an organic layer located between the first electrode and the second electrode and including an emission layer, and including at least one organic metal compound represented by Formula 1.

[0202] As used herein, the expression “(the organic layer) includes at least one organometallic compound represented by Formula 1” may include the case where “(the organic layer) includes the same organometallic compound represented by Formula 1” and the case where “(the organic layer) includes two or more different organometallic compounds represented by Formula 1”.

[0203] For example, the organic layer may include only Compound 1 as an organic metal compound. In this regard, Compound 1 may be present only in (e.g., appear in) the emission layer of the organic light-emitting device. In one or more embodiments, the organic layer may include Compound 1 and Compound 2 as organic metal compounds. In this regard, Compound 1 and Compound 2 may be present in (e.g., appear in) the same layer (e.g., Compound 1 and Compound 2 may both be present in (e.g., appear in) the emission layer), or in different layers (e.g., Compound 1 may be present in (e.g., appear in) the emission layer, and Compound 2 may be present in (e.g., appear in) the electron transport region).

[0204] In one embodiment, the first electrode may be an anode,

[0205] The second electrode may be a cathode,

[0206] The organic layer may further include a hole transport region between the first electrode and the emission layer and an electron transport region between the emission layer and the second electrode.

[0207] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof, and

[0208] 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.

[0209] As used herein, the term "organic layer" refers to a single layer and / or multiple layers located between the first electrode and the second electrode of the organic light-emitting device. The material included in the "organic layer" is not limited to organic compounds. For example, the organic layer may include an inorganic material.

[0210] In one or more embodiments, the emission layer of the organic light emitting device may include at least one organic metal compound, and the emission layer may further include a host. Here, the amount of the host included in the emission layer may be greater than the amount of the organic metal compound included in the emission layer.

[0211] In one embodiment, the emission layer of the organic light emitting device may further include a host, and the host may include a silyl-containing compound, a phosphine oxide-containing compound, or any combination thereof.

[0212] In one embodiment, the hole transport region may include an electron blocking layer, and the electron blocking layer may include an organic metal compound; or

[0213] The electron transport region may include a hole blocking layer, and the hole blocking layer may include an organic metal compound.

[0214] In one embodiment, the p-dopant can have a lowest unoccupied molecular orbital (LUMO) energy level of less than about -3.5 eV.

[0215] In one embodiment, the electron transport region may include a phosphine oxide-containing compound or a silyl group-containing compound.

[0216] In one or more embodiments, the electron transport region may include a hole blocking layer, the hole blocking layer may be in direct contact with the emission layer, and may include a phosphine oxide-containing compound or a silyl group-containing compound.

[0217] Figure 1 Description

[0218] Figure 1 is a schematic cross-sectional view of an organic light emitting device 10 according to an embodiment. The organic light emitting device 10 includes a first electrode 110 , an organic layer 150 , and a second electrode 190 .

[0219] In the following, we will combine Figure 1A structure of an organic light emitting device 10 and a method of manufacturing the organic light emitting device 10 according to an embodiment are described.

[0220] First electrode 110

[0221] exist Figure 1 In the embodiment, the substrate may be additionally located below the first electrode 110 or above the second electrode 190. The substrate may be a glass substrate or a plastic substrate, both of which have excellent mechanical strength, thermal stability, transparency, surface flatness, ease of handling, and waterproofness.

[0222] The first electrode 110 may be formed by depositing or sputtering a material for forming the first electrode 110 on a substrate. When the first electrode 110 is an anode, the material for forming the first electrode 110 may be selected from materials having a high work function to facilitate hole injection.

[0223] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 may be selected from indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 ), zinc oxide (ZnO), and any combination thereof, but the embodiments of the present disclosure are not limited thereto. In one or more embodiments, when the first electrode 110 is a semi-transmissive electrode or a reflective electrode, the material used to form the first electrode 110 may be selected from magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), and any combination thereof, but the embodiments of the present disclosure are not limited thereto.

[0224] The first electrode 110 may have a single-layer structure or a multi-layer structure including two or more layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO, but the structure of the first electrode 110 is not limited thereto.

[0225] Organic layer 150

[0226] The organic layer 150 may be located on the first electrode 110. The organic layer 150 may include an emission layer.

[0227] The organic layer 150 may further include a hole transport region between the first electrode 110 and the emission layer and an electron transport region between the emission layer and the second electrode 190 .

[0228] Hole transport region in the organic layer 150

[0229] The hole transport region may have: i) a single layer structure including a single layer including a single material; ii) a single layer structure including a single layer including a plurality of different materials; or iii) a multilayer structure having a plurality of layers including a plurality of different materials.

[0230] The hole transport region may include at least one layer selected from a hole injection layer, a hole transport layer, an emission auxiliary layer, and an electron blocking layer.

[0231] For example, the hole transport region may have a single-layer structure or a multi-layer structure, wherein the single-layer structure includes a single layer comprising a plurality of different materials, and the multi-layer structure has a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission assisting layer structure, a hole injection layer / emission assisting layer structure, a hole transport layer / emission assisting layer structure or a hole injection layer / hole transport layer / emission assisting layer structure, wherein, for each structure, the constituent layers are stacked sequentially from the first electrode 110 in the order stated, but the structure of the hole transport region is not limited thereto.

[0232] The hole transport region may include at least one selected from m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiro-TPD, spiro-NPB, methylated NPB, TAPC, HMTPD, 4,4',4"-tri(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), a compound represented by Formula 201, and a compound represented by Formula 202:

[0233]

[0234] Formula 201

[0235]

[0236] Formula 202

[0237]

[0238] In equation 201 and equation 202,

[0239] L 201 To L 204 can be independently selected from substituted or unsubstituted C 3 -C 10 Cycloalkylene, substituted or unsubstituted C 1 -C 10Heterocycloalkylene, substituted or unsubstituted C 3 -C 10 Cycloalkenylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkenylene, substituted or unsubstituted C 6 -C 60 Arylene, substituted or unsubstituted C 1 -C 60 heteroarylene, substituted or unsubstituted divalent non-aromatic condensed polycyclic group and substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group,

[0240] L 205 Can be selected from *-O-*', *-S-*', *-N(Q 201 )-*', substituted or unsubstituted C 1 -C 20 Alkylene, substituted or unsubstituted C 2 -C 20 Alkenylene, substituted or unsubstituted C 3 -C 10 Cycloalkylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene, substituted or unsubstituted C 3 -C 10 Cycloalkenylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkenylene, substituted or unsubstituted C 6 -C 60 Arylene, substituted or unsubstituted C 1 -C 60 heteroarylene, substituted or unsubstituted divalent non-aromatic condensed polycyclic group and substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group,

[0241] xa1 to xa4 may each independently be an integer from 0 to 3,

[0242] xa5 can be an integer from 1 to 10, and

[0243] R 201 To R 204 and Q 201 can be independently selected from substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group.

[0244] For example, in Equation 202, R 201 and R 202 may be optionally linked via a single bond, a dimethyl-methylene or a diphenyl-methylene, R 203 and R 204 The attachment may alternatively be via a single bond, a dimethyl-methylene or a diphenyl-methylene.

[0245] In one embodiment, in equation 201 and equation 202,

[0246] L 201 To L 205 Can be independently selected from:

[0247] Phenylene, cyclopentadienylene, indenylene, naphthylene, azulenylene, heptalenylene, indacenylene, acenaphthenylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, phenanthrenylene, anthracenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene phenylene, tetraphenylene, perylene, perylene, pentaphenylene, hexaphenylene, pentphenylene, rubidinylene, camphenylene, ovaphenylene, thienylene, furanylene, carbazolylene, indolylene, isoindolylene, benzofuranylene, benzothienylene, dibenzofuranylene, dibenzothienylene, benzocarbazolylene, dibenzocarbazolylene, dibenzosilylene, and pyridinylene; and

[0248] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, substituted with C 1 -C 10Alkyl phenyl, phenyl substituted with -F, pentalenyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, tetraphenyl, peryl, peryl, pentaphenyl, hexaphenyl, pentacene, rubinyl, camphenyl, ovalenyl, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilyl, pyridyl, -Si(Q 31 )(Q 32 )(Q 33 ) and -N(Q 31 )(Q 32 ) is at least one selected from phenylene, cyclopentadienylene, indenylene, naphthylene, azulenylene, heptalene, indacenylene, acenaphthenylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, phenanthrenylene, anthracenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene phenylene, tetraphenylene, perylene, perylene, pentaphenylene, hexaphenylene, pentphenylene, rubidinylene, camphenylene, ovaphenylene, thienylene, furanylene, carbazolylene, indolylene, isoindolylene, benzofuranylene, benzothienylene, dibenzofuranylene, dibenzothienylene, benzocarbazolylene, dibenzocarbazolylene, dibenzosilylene and pyridylene, and

[0249] Q 31 To Q 33 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 Alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

[0250] In one or more embodiments, xa1 to xa4 may each independently be 0, 1 or 2.

[0251] In one or more embodiments, xa5 can be 1, 2, 3 or 4.

[0252] In one or more embodiments, R 201 To R 204 and Q 201 Can be independently selected from:

[0253] Phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, tetraphenyl, peryl, peryl, pentaphenyl, hexaphenyl, pentacene, rubinyl, camphenyl, ovalenyl, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilyl, and pyridyl; and

[0254] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, substituted with C 1 -C 10 Alkyl phenyl, phenyl substituted with -F, pentalenyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, tetraphenyl, peryl, peryl, pentaphenyl, hexaphenyl, pentacene, rubinyl, camphenyl, ovalenyl, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilyl, pyridyl, -Si(Q 31 )(Q 32 )(Q 33 ) and -N(Q 31 )(Q 32 ) is at least one selected from phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, tetraphenyl, peryl, peryl, pentaphenyl, hexaphenyl, pentacene, rubinyl, camphenyl, ovalenyl, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilyl and pyridyl, and

[0255] Here, Q 31 To Q 33Same as described above.

[0256] In one or more embodiments, from R in Formula 201 201 To R 203 At least one of the selected ones can be independently selected from:

[0257] fluorenyl, spirobifluorenyl, carbazolyl, dibenzofuranyl, and dibenzothiophenyl; and

[0258] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, substituted with C 1 -C 10 an alkyl group selected from the group consisting of a phenyl group, a phenyl group substituted with -F, a naphthyl group, a fluorenyl group, a spirobifluorenyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group,

[0259] However, the embodiments of the present disclosure are not limited thereto.

[0260] In one or more embodiments, in Formula 202, i) R 201 and R 202 can be connected via a single bond, and / or ii) R 203 and R 204 Can connect via one-touch.

[0261] In one or more embodiments, from R in Formula 202 201 To R 204 At least one of the selected ones may be selected from:

[0262] carbazolyl; and

[0263] Substitutions include deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, substituted with C 1 -C 10 a carbazolyl group selected from at least one of a phenyl group of an alkyl group, a phenyl group substituted with -F, a naphthyl group, a fluorenyl group, a spirobifluorenyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group,

[0264] However, the embodiments of the present disclosure are not limited thereto.

[0265] The compound represented by Formula 201 can be represented by Formula 201A:

[0266] Formula 201A

[0267]

[0268] For example, the compound represented by Formula 201 may be represented by Formula 201A(1), but embodiments of the present disclosure are not limited thereto:

[0269] Formula 201A(1)

[0270]

[0271] In one embodiment, the compound represented by Formula 201 may be represented by Formula 201A-1, but embodiments of the present disclosure are not limited thereto:

[0272] Formula 201A-1

[0273]

[0274] In one embodiment, the compound represented by Formula 202 can be represented by Formula 202A:

[0275] Formula 202A

[0276]

[0277] In one or more embodiments, the compound represented by Formula 202 can be represented by Formula 202A-1:

[0278] Formula 202A-1

[0279]

[0280] In Formula 201A, Formula 201A(1), Formula 201A-1, Formula 202A, and Formula 202A-1,

[0281] Here, L 201 To L 203 , xa1 to xa3, xa5 and R 202 To R 204 Same as described above,

[0282] R 211 and R 212 can be independently combined with R 203 are defined the same as

[0283] R 213 To R 217can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, substituted with C 1 -C 10 Alkyl phenyl, phenyl substituted with -F, pentalenyl, indenyl, naphthyl, azulenyl, heptalenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, tetraphenyl, peryl, peryl, pentaphenyl, hexaphenyl, pentacene, rubinyl, camphenyl, ovalenyl, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, dibenzosilyl and pyridyl.

[0284] The hole transport region may include at least one compound selected from Compound HT1 to Compound HT39, but the embodiments of the present disclosure are not limited thereto:

[0285]

[0286]

[0287]

[0288] The thickness of the hole transport region may be approximately To about For example, approximately To about When the hole transport region includes at least one selected from a hole injection layer and a hole transport layer, the thickness of the hole injection layer may be about To about For example, approximately To about The thickness of the hole transport layer can be about To about For example, approximately To about When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within these ranges, suitable or satisfactory hole transport characteristics may be obtained without significantly increasing driving voltage.

[0289] The emission assisting layer may improve light emitting efficiency by compensating the optical resonance distance according to the wavelength of light emitted by the emission layer, and the electron blocking layer may block the flow of electrons from the electron transport region. The emission assisting layer and the electron blocking layer may include materials as described above.

[0290] p-dopant

[0291] In addition to these materials, the hole transport region may also include a charge generating material for improving the conductive property. The charge generating material may be dispersed uniformly or non-uniformly in the hole transport region.

[0292] The charge generating material may be, for example, a p-dopant.

[0293] In one embodiment, the p-dopant may have a LUMO level less than about -3.5 eV.

[0294] The p-dopant may include at least one selected from quinone derivatives, metal oxides, and cyano-containing compounds, but embodiments of the present disclosure are not limited thereto.

[0295] In one embodiment, the p-dopant may include at least one selected from the following compounds:

[0296] Quinone derivatives, such as tetracyanoquinodimethane (TCNQ) and 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ);

[0297] Metal oxides, such as tungsten oxide or molybdenum oxide;

[0298] 1,4,5,8,9,12-Hexaazatriphenylene-hexanitrile (HAT-CN); and

[0299] The compound represented by formula 221,

[0300] However, the embodiments of the present disclosure are not limited thereto:

[0301]

[0302] Formula 221

[0303]

[0304] In formula 221,

[0305] R 221 To R 223 can be independently selected from substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 1 -C 60 Heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, wherein R 221 To R 223 At least one selected from the group consisting of cyano, -F, -Cl, -Br, -I, C substituted with -F 1 -C 20 Alkyl, C substituted with -Cl 1 -C 20 Alkyl, C substituted with -Br 1 -C 20 Alkyl and C substituted with -I 1 -C 20 At least one substituent selected from the group consisting of:

[0306] Emission layer in the organic layer 150

[0307] When the organic light-emitting device 10 is a full-color organic light-emitting device, the emission layer may be patterned into a red emission layer, a green emission layer, or a blue emission layer according to the sub-pixel. In one or more embodiments, the emission layer may have a stacked structure of two or more layers selected from a red emission layer, a green emission layer, and a blue emission layer, wherein the two or more layers are in contact with each other or separated from each other. In one or more embodiments, the emission layer may include two or more materials selected from a red light-emitting material, a green light-emitting material, and a blue light-emitting material, wherein the two or more materials are mixed with each other in a single layer to be constructed to emit white light.

[0308] The emission layer may include a host and a dopant, and the dopant may include at least one selected from a phosphorescent dopant and a fluorescent dopant. In addition, the phosphorescent dopant may include an organic metal compound represented by Formula 1.

[0309] In the emission layer, the amount of the dopant may be in the range of about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host, but the embodiments of the present disclosure are not limited thereto. In the emission layer, the amount of the organic metal compound may be in the range of about 0.1 parts by weight to about 50 parts by weight based on 100 parts by weight of the emission layer, but the embodiments of the present disclosure are not limited thereto.

[0310] The thickness of the emitter layer can be approximately To about In the range of, for example, about To about When the thickness of the emission layer is within this range, excellent light emitting characteristics can be obtained without significantly increasing the driving voltage.

[0311] Subject in the emission layer

[0312] The host may include a compound represented by Formula 301:

[0313] Formula 301

[0314] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 .

[0315] In formula 301,

[0316] Ar 301 It can be substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0317] xb11 can be 1, 2 or 3,

[0318] L 301 Can be selected from substituted or unsubstituted C 3 -C 10 Cycloalkylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene, substituted or unsubstituted C 3 -C 10 Cycloalkenylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkenylene, substituted or unsubstituted C 6 -C 60 Arylene, substituted or unsubstituted C 1 -C 60 heteroarylene, substituted or unsubstituted divalent non-aromatic condensed polycyclic group and substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group,

[0319] xb1 can be an integer from 0 to 5.

[0320] R 301 It can be selected from deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, substituted or unsubstituted C 1 -C 60Alkyl, substituted or unsubstituted C 2 -C 60 Alkenyl, substituted or unsubstituted C 2 -C 60 Alkynyl, substituted or unsubstituted C 1 -C 60 Alkoxy, substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 301 )(Q 302 )(Q 303 )、-N(Q 301 )(Q 302 )、-B(Q 301 )(Q 302 )、-C(=O)(Q 301 )、-S(=O) 2 (Q 301 ) and -P(=O)(Q 301 )(Q 302 ),

[0321] xb21 can be an integer from 1 to 5, and

[0322] Q 301 To Q 303 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 an alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group, but the embodiments of the present disclosure are not limited thereto.

[0323] In one embodiment, Ar in Formula 301 301 Can be selected from:

[0324] naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, naphthacene, peryl, phenanthrenyl, indenoanthryl, dibenzofuranyl, and dibenzothiophenyl; and

[0325] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ) is at least one of naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, naphthacene, peryl, peryl, pentaphenyl, indenoanthryl, dibenzofuranyl and dibenzothiophenyl, and

[0326] Q 31 To Q 33 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 an alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, and a naphthyl group, but the embodiments of the present disclosure are not limited thereto.

[0327] When xb11 in Formula 301 is 2 or greater, two or more Ar 301 Can connect via one-touch.

[0328] In one or more embodiments, the compound represented by Formula 301 may be represented by Formula 301-1 or Formula 301-2:

[0329] Formula 301-1

[0330]

[0331] Formula 301-2

[0332]

[0333] In Formula 301-1 and Formula 301-2,

[0334] Ring A 301 To Ring A 304 can be independently selected from a benzene ring, a naphthalene ring, a phenanthrene ring, a fluoranthene ring, a benzo[9,10]phenanthrene ring, a pyrene ring, ring, a pyridine ring, a pyrimidine ring, an indene ring, a fluorene ring, a spirobifluorene ring, a benzofluorene ring, a dibenzofluorene ring, an indole ring, a carbazole ring, a benzocarbazole ring, a dibenzocarbazole ring, a furan ring, a benzofuran ring, a dibenzofuran ring, a naphthofuran ring, a benzonaphthofuran ring, a dinaphthofuran ring, a thiophene ring, a benzothiophene ring, a dibenzothiophene ring, a naphthothiophene ring, a benzonaphthothiophene ring and a dinaphthothiophene ring,

[0335] X 301 Can be O, S or N-[(L 304 ) xb4 -R 304 ],

[0336] R 311 To R 314 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ),

[0337] xb22 and xb23 can each independently be 0, 1 or 2,

[0338] Here, L 301 、xb1、R 301 and Q 31 To Q 33 Same as described above,

[0339] L 302 To L 304can be independently combined with L 301 The same definition,

[0340] xb2 to xb4 may each independently be the same as defined in conjunction with xb1, and

[0341] R 302 To R 304 can be independently combined with R 301 The definition is the same.

[0342] For example, in Formula 301, Formula 301-1, and Formula 301-2, L 301 To L 304 Can be independently selected from:

[0343] Phenylene, naphthylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, anthracenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene yl, perylene, pentaphenylene, hexaphenylene, pentphenylene, thienylene, furanylene, carbazolylene, indolylene, isoindolylene, benzofuranylene, benzothiophenylene, dibenzofuranylene, dibenzothiophenylene, benzocarbazolylene, dibenzocarbazolylene, dibenzothioylene, pyridylene, imidazolylene, pyrazolylene, thiazolylene, isothiazolylene, oxazolylene, isoxazolylene, thiadiazolylene, oxadiazolylene, pyrazinylene, pyrimidinylene, pyridazinylene, triazinylene, quinolylene, isoquinolylene, benzoquinolylene, phthalazinylene, naphthyridinylene, quinoxalylene, quinazolinylene, cinnolinylene, phenanthridinylene, acridinylene, phenanthrolinylene, phenazinylene, benzimidazolylene, isobenzothiazolylene, benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolylene, imidazopyridylene, imidazopyrimidylene, and azacarbazolylene; and

[0344] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyridyl azine, pyrimidinyl, pyridazinyl, triazine, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ) is at least one of phenylene, naphthylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, anthracenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene, yl, perylene, pentaphenylene, hexaphenylene, pentphenylene, thienylene, furanylene, carbazolylene, indolylene, isoindolylene, benzofuranylene, benzothiophenylene, dibenzofuranylene, dibenzothiophenylene, benzocarbazolylene, dibenzocarbazolylene, dibenzothioylene, pyridylene, imidazolylene, pyrazolylene, thiazolylene, isothiazolylene, oxazolylene, isoxazolylene, thiadiazolylene, oxadiazolylene, pyrazinylene, pyrimidinylene, pyridazinylene, triazinylene, quinolylene, isoquinolylene, benzoquinolylene, phthalazinylene, naphthyridinylene, quinoxalylene, quinazolinylene, cinnolinylene, phenanthridinylene, acridinylene, phenanthrolinylene, phenazinylene, benzimidazolylene, isobenzothiazolylene, benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolylene, imidazopyridylene, imidazopyrimidylene and azacarbazolylene, and

[0345] Here, Q 31 To Q 33 Same as described above.

[0346] In one embodiment, R in Formula 301, Formula 301-1, and Formula 301-2 301 To R304 Can be independently selected from:

[0347] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, and azacarbazolyl; and

[0348] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyridyl azine, pyrimidinyl, pyridazinyl, triazine, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31) and -P(=O)(Q 31 )(Q 32 ) is at least one selected from the group consisting of phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl and azacarbazolyl, and

[0349] Here, Q 31 To Q 33 Same as described above.

[0350] In one embodiment, the host may include an alkaline earth metal complex. For example, the host may be selected from a Be complex (eg, compound H55), a Mg complex, and a Zn complex.

[0351] In one or more embodiments, the host may include at least one selected from 9,10-di(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), 9,10-di(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP), 1,3-di-9-carbazolylbenzene (mCP), 1,3,5-tri(carbazolyl-9-yl)benzene (TCP), and compounds H1 to H55, but the embodiments of the present disclosure are not limited thereto:

[0352]

[0353]

[0354]

[0355] In one or more embodiments, the body may include at least one selected from a silicon-containing compound (eg, BCPDS, etc. used in the following examples) and a phosphine oxide-containing compound (eg, POPCPA, etc. used in the following examples).

[0356] In one or more embodiments, the host may include only a single type of compound (e.g., a compound having only a single composition), or may include two or more compounds that are different from each other (e.g., the host used in the following examples may be composed of BCPDS and POPCPA), but the embodiments of the present disclosure are not limited thereto.

[0357] The phosphorescent dopant included in the emission layer in the organic layer 150

[0358] The phosphorescent dopant may include an organic metal compound represented by Formula 1.

[0359] In addition, the phosphorescent dopant may also include an organic metal complex represented by Formula 401:

[0360] Formula 401

[0361] M(L 401 ) xc1 (L 402 ) xc2

[0362] Formula 402

[0363]

[0364] In equations 401 and 402,

[0365] M may be selected from iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh) and thulium (Tm),

[0366] L 401 may be a ligand represented by formula 402, and xc1 may be 1, 2 or 3, wherein when xc1 is 2 or greater, two or more L 401 can be the same or different from each other,

[0367] L 402 may be an organic ligand, and xc2 may be an integer from 0 to 4, wherein when xc2 is 2 or greater, two or more L 402 can be the same or different from each other,

[0368] X 401 To X 404 may each independently be nitrogen or carbon,

[0369] X 401 and X 403 Can be connected via single or double bonds, X 402 and X 404 Can be connected via single or double bonds,

[0370] Ring A401 and Ring A 402 can be independently C 5 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group,

[0371] X 405 It can be a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q 411 )-*'、*-C(Q 411 )(Q 412 )-*'、*-C(Q 411 )=C(Q 412 )-*'、*-C(Q 411 )=*'or*=C=*', where Q 411 and Q 412 can be independently hydrogen, deuterium, C 1 -C 20 Alkyl, C 1 -C 20 alkoxy, phenyl, biphenyl, terphenyl or naphthyl,

[0372] X 406 Can be a single bond, O or S,

[0373] R 401 and R 402 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, substituted or unsubstituted C 1 -C 20 Alkyl, substituted or unsubstituted C 1 -C 20 Alkoxy, substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 401 )(Q 402 )(Q 403 )、-N(Q 401 )(Q 402 )、-B(Q 401 )(Q 402 )、-C(=O)(Q 401 )、-S(=O) 2 (Q 401 ) and -P(=O)(Q 401 )(Q 402 ), where Q 401 To Q 403 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 Alkoxy, C 6 -C 20 Aryl and C 1 -C 20 Heteroaryl,

[0374] xc11 and xc12 may each independently be an integer from 0 to 10, and

[0375] The * and *' in formula 402 both represent the binding site with M in formula 401.

[0376] In one embodiment, ring A in formula 402 401 and Ring A 402 They can all be independently selected from phenyl, naphthyl, fluorenyl, spirobifluorenyl, indenyl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, carbazolyl, benzimidazolyl, benzofuranyl, benzothiophenyl, isobenzothiophenyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl and dibenzothiophenyl.

[0377] In one or more embodiments, in Formula 402, i) X 401 Can be nitrogen, X 402 It can be carbon, or ii) X 401 and X 402 They may both be nitrogen.

[0378] In one or more embodiments, R in equation 402 401 and R 402 Can be independently selected from:

[0379] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl and C 1 -C 20 Alkoxy;

[0380] The C groups are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, phenyl, naphthyl, cyclopentyl, cyclohexyl, adamantyl, norbornyl and norbornenyl. 1 -C 20 Alkyl and C 1 -C 20 Alkoxy;

[0381] Cyclopentyl, cyclohexyl, adamantyl, norbornyl, norbornenyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, quinoxalinyl, quinazolinyl, carbazolyl, dibenzofuranyl and dibenzothiophenyl;

[0382] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 at least one selected from the group consisting of an alkoxy group, a cyclopentyl group, a cyclohexyl group, an adamantyl group, a norbornyl group, a norbornenyl group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a pyridyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, a quinolyl group, an isoquinolyl group, a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, a dibenzofuranyl group, and a dibenzothiophenyl group; and

[0383] -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 ) and -P(=O)(Q 401 )(Q402 ),and

[0384] Q 401 To Q 403 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 alkoxy, phenyl, biphenyl, and naphthyl, but the embodiments of the present disclosure are not limited thereto.

[0385] In one or more embodiments, in Formula 401, when xc1 is 2 or greater, two or more L 401 Two A's 401 It can be optionally connected via X as a linker 407 connection, or when xc1 is 2 or greater, two or more L 401 Two A's 402 It can be optionally connected via X as a linker 408 Connection (see Compound PD1 to Compound PD4 and Compound PD7). 407 and X 408 can be independently a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q 413 )-*'、*-C(Q 413 )(Q 414 )-*' or *-C(Q 413 )=C(Q 414 )-*'(where Q 413 and Q 414 can be independently hydrogen, deuterium, C 1 -C 20 Alkyl, C 1 -C 20 alkoxy, phenyl, biphenyl, terphenyl or naphthyl), but the embodiments of the present disclosure are not limited thereto.

[0386] L in Formula 401 402 It can be a monovalent organic ligand, a divalent organic ligand or a trivalent organic ligand. 402 It may be halogen, diketone (e.g., acetylacetone), carboxylic acid (e.g., picolinic acid), -C(=O), isonitrile, -CN, and phosphorus-containing substances (e.g., phosphine or phosphite), but the embodiments of the present disclosure are not limited thereto.

[0387] In one embodiment, the phosphorescent dopant may be selected from, for example, compound PD1 to compound PD25, but the embodiments of the present disclosure are not limited thereto:

[0388]

[0389]

[0390] Fluorescent dopants in the emitting layer

[0391] The fluorescent dopant may include an arylamine compound or a styrylamine compound.

[0392] The fluorescent dopant may include a compound represented by Formula 501:

[0393] Formula 501

[0394]

[0395] In formula 501,

[0396] Ar 501 It can be substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0397] L 501 To L 503 can be independently selected from substituted or unsubstituted C 3 -C 10 Cycloalkylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene, substituted or unsubstituted C 3 -C 10 Cycloalkenylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkenylene, substituted or unsubstituted C 6 -C 60 Arylene, substituted or unsubstituted C 1 -C 60 heteroarylene, substituted or unsubstituted divalent non-aromatic condensed polycyclic group and substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group,

[0398] xd1 to xd3 may each independently be an integer from 0 to 3,

[0399] R 501 and R 502 can be independently selected from substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60 heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, and

[0400] xd4 can be an integer from 1 to 6.

[0401] In one embodiment, Ar in Formula 501 501 Can be selected from:

[0402] naphthyl, heptathenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, naphthacene, phenanthrenyl, perylenyl, pentaphenanthrenyl, indenoanthryl, and indenophenanthrenyl; and

[0403] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 at least one selected from the group consisting of alkoxy, phenyl, biphenyl, terphenyl and naphthyl, naphthyl, heptalenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, The following examples include 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,

[0404] In one or more embodiments, L in Formula 501 501 To L 503 Can be independently selected from:

[0405] Phenylene, naphthylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, anthracenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene phenylene, ...

[0406] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, a phenylene group, a naphthylene group, a fluorenyl group, a spirobifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracene group, an anthracene group, an fluoranthenyl group, a benzo[9,10]phenanthrenyl group, a pyrenyl group, a fluorenyl group, a phenanthrenyl group, a phenanthrenyl group, a fluoranthrenyl group, a benzo[9,10]phenanthrenyl group, a py ... The compounds include phenylene, benzofuranylene, benzothiophenylene, dibenzofuranylene, dibenzothiophenylene, benzocarbazolylene, dibenzocarbazolylene, dibenzothiophenylene, and pyridylene.

[0407] In one or more embodiments, R in Formula 501 501 and R 502 Can be independently selected from:

[0408] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, dibenzosilyl, and pyridyl; and

[0409] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl and -Si(Q 31 )(Q 32 )(Q 33 ) is at least one selected from the group consisting of phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophene, and pyridyl, and

[0410] Q 31 To Q 33 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 Alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

[0411] In one or more embodiments, xd4 in equation 501 may be 2, but the embodiments of the present disclosure are not limited thereto.

[0412] For example, the fluorescent dopant may be selected from Compound FD1 to Compound FD22:

[0413]

[0414]

[0415]

[0416] In one or more embodiments, the fluorescent dopant may be selected from the following compounds, but the embodiments of the present disclosure are not limited thereto:

[0417]

[0418] Electron transport region in organic layer 150

[0419] The electron transport region may have: i) a single layer structure including a single layer including a single material; ii) a single layer structure including a single layer including a plurality of different materials; or iii) a multilayer structure having a plurality of layers including a plurality of different materials.

[0420] The electron transport region may include at least one selected from a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, and an electron injection layer, but the embodiments of the present disclosure are not limited thereto.

[0421] For example, 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 for each structure, the constituent layers are sequentially stacked from the emission layer in the order stated. However, embodiments of the structure of the electron transport region are not limited thereto.

[0422] The electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer in the electron transport region) may include a metal-free compound containing at least one π electron-depleted nitrogen-containing ring.

[0423] "π-electron-poor nitrogen-containing ring" means a C-containing ring having at least one *-N=*' moiety as a ring-forming part. 1 -C 60 Heterocyclic group.

[0424] For example, the "π-electron-poor nitrogen-containing ring" may be: i) a 5- to 7-membered heteromonocyclic group having at least one *-N=*' portion; ii) a heteropolycyclic group in which two or more 5- to 7-membered heteromonocyclic groups each having at least one *-N=*' portion are condensed with each other; or iii) a heteropolycyclic group in which at least one of the 5- to 7-membered heteromonocyclic groups each having at least one *-N=*' portion is condensed with at least one C 5 -C 60 A carbocyclic condensed heteropolycyclic group.

[0425] Examples of π-electron-poor nitrogen-containing rings include, but are not limited to, imidazole, pyrazole, thiazole, isothiazole, oxazole, isoxazole, pyridine, pyrazine, pyrimidine, pyridazine, indazole, purine, quinoline, isoquinoline, benzoquinoline, phthalazine, naphthyridine, quinoxaline, quinazoline, cinnoline, phenanthridine, acridine, phenanthroline, phenazine, benzimidazole, isobenzothiazole, benzoxazole, isobenzoxazole, triazole, tetrazole, oxadiazole, triazine, thiadiazole, imidazopyridine, imidazopyrimidine and azacarbazole.

[0426] For example, the electron transport region may include a compound represented by Formula 601:

[0427] Formula 601

[0428] [Ar 601 ] xe11 -[(L601 ) xe1 -R 601 ] xe21 .

[0429] In formula 601,

[0430] Ar 601 It can be substituted or unsubstituted C 5 -C 60 Carbocyclic or substituted or unsubstituted C 1 -C 60 Heterocyclic group,

[0431] xe11 can be 1, 2 or 3,

[0432] L 601 Can be selected from substituted or unsubstituted C 3 -C 10 Cycloalkylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkylene, substituted or unsubstituted C 3 -C 10 Cycloalkenylene, substituted or unsubstituted C 1 -C 10 Heterocycloalkenylene, substituted or unsubstituted C 6 -C 60 Arylene, substituted or unsubstituted C 1 -C 60 heteroarylene, substituted or unsubstituted divalent non-aromatic condensed polycyclic group and substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group,

[0433] xe1 can be an integer from 0 to 5,

[0434] R 601 Can be selected from substituted or unsubstituted C 3 -C 10 Cycloalkyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkyl, substituted or unsubstituted C 3 -C 10 Cycloalkenyl, substituted or unsubstituted C 1 -C 10 Heterocycloalkenyl, substituted or unsubstituted C 6 -C 60 Aryl, substituted or unsubstituted C 6 -C 60 Aryloxy, substituted or unsubstituted C 6 -C 60 Arylthio, substituted or unsubstituted C 1 -C 60heteroaryl, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 601 )(Q 602 )(Q 603 )、-C(=O)(Q 601 )、-S(=O) 2 (Q 601 ) and -P(=O)(Q 601 )(Q 602 ),

[0435] Q 601 To Q 603 can be independently C 1 -C 10 Alkyl, C 1 -C 10 alkoxy, phenyl, biphenyl, terphenyl or naphthyl, and

[0436] xe21 can be an integer from 1 to 5.

[0437] In one embodiment, xe11 number of Ar 601 and xe21 number of R 601 At least one of the may include a π-electron-poor nitrogen-containing ring.

[0438] In one embodiment, Ar in Formula 601 601 Can be selected from:

[0439] Phenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, phenyl, phenanthrenyl, phenanthrenyl, phenanthrenyl, phenanthryl, phenanthroline, phenazinyl, phenanthryl ...

[0440] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, -Si(Q 31)(Q 32 )(Q 33 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ) is at least one selected from phenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, naphthyl, phenanthrenyl, peryl, pentaphenanthrenyl, indenoanthryl, dibenzofuranyl, dibenzothiophenyl, carbazolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, imidazopyridinyl, imidazopyrimidinyl, and azacarbazolyl, and

[0441] Q 31 To Q 33 can be independently selected from C 1 -C 10 Alkyl, C 1 -C 10 Alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

[0442] When xe11 in Formula 601 is 2 or greater, two or more Ar 601 Can connect via one-touch.

[0443] In one or more embodiments, Ar in Formula 601 601 It may be anthracene.

[0444] In one or more embodiments, the compound represented by Formula 601 can be represented by Formula 601-1:

[0445] Formula 601-1

[0446]

[0447] In formula 601-1,

[0448] X 614 Can be N or C (R 614 ), X 615 Can be N or C (R 615 ), X 616 Can be N or C (R 616 ), where, from X 614To X 616 At least one of the selected ones may be N,

[0449] L 611 To L 613 can be independently combined with L 601 The same definition,

[0450] xe611 to xe613 can all independently be the same as defined in conjunction with xe1,

[0451] R 611 To R 613 can be independently combined with R 601 are defined identically, and

[0452] R 614 To R 616 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl and naphthyl.

[0453] In one embodiment, L in equation 601 601 and L in formula 601-1 611 To L 613 Can be independently selected from:

[0454] Phenylene, naphthylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, anthracenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene yl, perylene, pentaphenylene, hexaphenylene, pentphenylene, thienylene, furanylene, carbazolylene, indolylene, isoindolylene, benzofuranylene, benzothiophenylene, dibenzofuranylene, dibenzothiophenylene, benzocarbazolylene, dibenzocarbazolylene, dibenzothioylene, pyridylene, imidazolylene, pyrazolylene, thiazolylene, isothiazolylene, oxazolylene, isoxazolylene, thiadiazolylene, oxadiazolylene, pyrazinylene, pyrimidinylene, pyridazinylene, triazinylene, quinolylene, isoquinolylene, benzoquinolylene, phthalazinylene, naphthyridinylene, quinoxalylene, quinazolinylene, cinnolinylene, phenanthridinylene, acridinylene, phenanthrolinylene, phenazinylene, benzimidazolylene, isobenzothiazolylene, benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolylene, imidazopyridylene, imidazopyrimidylene, and azacarbazolylene; and

[0455] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalazine at least one selected from the group consisting of phenylene, naphthylene, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl and azacarbazolyl, naphthylene, fluorenylene, spirobifluorenylene, benzofluorenylene, dibenzofluorenylene, phenanthrenylene, anthrylenylene, fluoranthenylene, benzo[9,10]phenanthrenylene, pyrenylene, pyrenylene yl, perylene, pentaphenylene, hexaphenylene, pentphenylene, thienylene, furanylene, carbazolylene, indolylene, isoindolylene, benzofuranylene, benzothiophenylene, dibenzofuranylene, dibenzothiophenylene, benzocarbazolylene, dibenzocarbazolylene, dibenzothioylene, pyridylene, imidazolylene, pyrazolylene, thiazolylene, isothiazolylene, oxazolylene, isoxazolylene, thiadiazolylene, oxadiazolylene , pyrazinylene, pyrimidinylene, pyridazinylene, triazinylene, quinolylene, isoquinolylene, benzoquinolylene, phthalazinylene, naphthyridinylene, quinoxalylene, quinazolinylene, cinnolinylene, phenanthridinylene, acridinylene, phenanthrolinylene, phenazinylene, benzimidazolylene, isobenzothiazolylene, benzoxazolylene, isobenzoxazolylene, triazolylene, tetrazolylene, imidazopyridylene, imidazopyrimidylene and azacarbazolylene,

[0456] However, the embodiments of the present disclosure are not limited thereto.

[0457] In one or more embodiments, xe1 in Formula 601 and xe611 to xe613 in Formula 601-1 may each independently be 0, 1, or 2.

[0458] In one or more embodiments, R in Formula 601 601 and R in formula 601-1611 To R 613 Can be independently selected from:

[0459] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl , pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, and azacarbazolyl;

[0460] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalide a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spirobifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a benzo[9,10]phenanthrenyl group, a pyrenyl group, yl, peryl, pentaphenyl, hexaphenyl, pentacene, thienyl, furyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiophenyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzoxazolyl, isobenzoxazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, and azacarbazolyl; and

[0461] -S(=O) 2 (Q 601 ) and -P(=O)(Q 601 )(Q 602 ),and

[0462] Here, Q 601 and Q 602 Same as described above.

[0463] The electron transport region may include at least one compound selected from compound ET1 to compound ET36, but the embodiments of the present disclosure are not limited thereto:

[0464]

[0465]

[0466]

[0467] In one or more embodiments, the electron transport region may include 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq 3 At least one selected from the group consisting of BAlq, 3-(biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole (TAZ) and NTAZ:

[0468]

[0469] In one embodiment, the electron transport region may include a compound containing phosphine oxide (e.g., TSPO1 used in the following examples, etc.), but the embodiments of the present disclosure are not limited thereto. In one embodiment, a compound containing phosphine oxide may be used for a hole blocking layer in the electron transport region, but the embodiments of the present disclosure are not limited thereto.

[0470] The thickness of the buffer layer, hole blocking layer or electron control layer can be about To about In the range of, for example, about To about When the thicknesses of the buffer layer, the hole blocking layer, and the electron control layer are within these ranges, the electron transport region may have excellent hole blocking characteristics or electron control characteristics without significantly increasing the driving voltage.

[0471] The thickness of the electron transport layer can be about To about For example, approximately To about When the thickness of the electron transport layer is within the above-described range, appropriate or satisfactory electron transport characteristics may be obtained without significantly increasing driving voltage.

[0472] In addition to the materials described above, the electron transport region (eg, an electron transport layer in the electron transport region) may further include a metal-containing material.

[0473] The metal-containing material may include at least one selected from an alkali metal complex and an alkaline earth metal complex. The alkali metal complex may include a metal ion selected from Li ions, Na ions, K ions, Rb ions, and Cs ions, and the alkaline earth metal complex may include a metal ion selected from Be ions, Mg ions, Ca ions, Sr ions, and Ba ions. The ligand coordinated with the metal ion of the alkali metal complex or the alkaline earth metal complex may be selected from hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, and cyclopentadiene, but the embodiments of the present disclosure are not limited thereto.

[0474] For example, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (lithium hydroxyquinoline, LiQ) or compound ET-D2:

[0475]

[0476] The electron transport region may include an electron injection layer that facilitates injection of electrons from the second electrode 190. The electron injection layer may be in direct contact with the second electrode 190.

[0477] The electron injection layer may have: i) a single layer structure including a single layer including a single material; ii) a single layer structure including a single layer including a plurality of different materials; or iii) a multilayer structure having a plurality of layers including a plurality of different materials.

[0478] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0479] The alkali metal may be selected from Li, Na, K, Rb, and Cs. In one embodiment, the alkali metal may be Li, Na, or Cs. In one or more embodiments, the alkali metal may be Li or Cs, but the embodiments of the present disclosure are not limited thereto.

[0480] The alkaline earth metal may be selected from Mg, Ca, Sr, and Ba.

[0481] The rare earth metal may be selected from Sc, Y, Ce, Tb, Yb, and Gd.

[0482] The alkali metal compound, the alkaline earth metal compound, and the rare earth metal compound may be selected from oxides and halides (e.g., fluorides, chlorides, bromides, or iodides) of alkali metals, alkaline earth metals, and rare earth metals.

[0483] The alkali metal compound may be selected from alkali metal oxides (such as Li 2 O, Cs 2 O, or K 2 O) and alkali metal halides (such as LiF, NaF, CsF, KF, LiI, NaI, CsI, or KI). In one embodiment, the alkali metal compound may be selected from LiF, Li 2 O, NaF, LiI, NaI, CsI, and KI, but the embodiments of the present disclosure are not limited thereto.

[0484] The alkaline earth metal compound may be selected from alkaline earth metal oxides (such as BaO, SrO, CaO, Ba x Sr 1-x O (0 < x < 1) or Ba x Ca 1-x O (0 < x < 1)). In one embodiment, the alkaline earth metal compound may be selected from BaO, SrO, and CaO, but the embodiments of the present disclosure are not limited thereto.

[0485] The rare earth metal compound may be selected from YbF 3 , ScF 3 , Sc 2 O 3 , Y 2 O 3 , Ce 2 O 3 , GdF 3 and TbF 3In one embodiment, the rare earth metal compound may be selected from YbF 3 ScF 3 , TbF 3 ,YbI 3 ScI 3 and TbI 3 , but the embodiments of the present disclosure are not limited thereto.

[0486] The alkali metal complex, alkaline earth metal complex and rare earth metal complex may include ions of alkali metal, alkaline earth metal and rare earth metal as described above, and the ligand coordinated to the metal ion of the alkali metal complex, alkaline earth metal complex or rare earth metal complex may be selected from hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline and cyclopentadiene, but the embodiments of the present disclosure are not limited thereto.

[0487] The electron injection layer can be composed of 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 (or can include 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 can also include organic material. When the electron injection layer also includes organic material, 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 can be uniformly or non-uniformly dispersed in the matrix including the organic material.

[0488] The thickness of the electron injection layer can be about To about In the range of, for example, about To about When the thickness of the electron injection layer is within these ranges, suitable or satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0489] The second electrode 190

[0490] The second electrode 190 may be located on the organic layer 150 having such a structure. The second electrode 190 may be a cathode as an electron injection electrode, and in this regard, a material for forming the second electrode 190 may be selected from metals, alloys, conductive compounds, and combinations thereof having a relatively low work function.

[0491] The second electrode 190 may include at least one selected from lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ITO, and IZO, but the embodiments of the present disclosure are not limited thereto. The second electrode 190 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0492] The second electrode 190 may have a single-layer structure or a multi-layer structure including two or more layers.

[0493] Figures 2 to 4 Description

[0494] Figure 2 2 is a schematic diagram of an organic light emitting device 20 according to an embodiment. The organic light emitting device 20 includes a first capping layer 210, a first electrode 110, an organic layer 150, and a second electrode 190, which are sequentially stacked in the order of this statement. Figure 3 is a schematic diagram of an organic light emitting device 30 according to an embodiment. The organic light emitting device 30 includes a first electrode 110, an organic layer 150, a second electrode 190, and a second capping layer 220, which are sequentially stacked in the order of this statement. Figure 4 is a schematic diagram of an organic light emitting device 40 according to an embodiment. The organic light emitting device 40 includes a first capping layer 210, a first electrode 110, an organic layer 150, a second electrode 190, and a second capping layer 220 which are sequentially stacked in the order of this statement.

[0495] about Figures 2 to 4 , can be combined by reference Figure 1 The description is given to understand the first electrode 110 , the organic layer 150 , and the second electrode 190 .

[0496] In the organic layer 150 of each of the organic light-emitting devices 20 and 40, light generated in the emission layer may pass through the first electrode 110 and the first cover layer 210 toward the outside, wherein the first electrode 110 may be a semi-transmissive electrode or a transmissive electrode. In the organic layer 150 of each of the organic light-emitting devices 30 and 40, light generated in the emission layer may pass through the second electrode 190 and the second cover layer 220 toward the outside, wherein the second electrode 190 may be a semi-transmissive electrode or a transmissive electrode.

[0497] The first capping layer 210 and the second capping layer 220 may improve external light emitting efficiency according to the principle of constructive interference.

[0498] The first capping layer 210 and the second capping layer 220 may each independently be an organic capping layer including an organic material, an inorganic capping layer including an inorganic material, or a composite capping layer including an organic material and an inorganic material.

[0499] At least one selected from the first capping layer 210 and the second capping layer 220 may each independently include at least one material selected from carbocyclic compounds, heterocyclic compounds, amine compounds, porphyrin derivatives, phthalocyanine derivatives, naphthalocyanine derivatives, alkali metal complexes, and alkaline earth metal complexes. The carbocyclic compounds, heterocyclic compounds, and amine compounds may be optionally substituted with a substituent containing at least one element selected from O, N, S, Se, Si, F, Cl, Br, and I. In one embodiment, at least one selected from the first capping layer 210 and the second capping layer 220 may each independently include an amine compound.

[0500] In one embodiment, at least one selected from the first capping layer 210 and the second capping layer 220 may each independently include the compound represented by Formula 201 or the compound represented by Formula 202.

[0501] In one or more embodiments, at least one selected from the first cap layer 210 and the second cap layer 220 may each independently include a compound selected from compounds HT28 to HT33 and compounds CP1 to CP5, but the embodiments of the present disclosure are not limited thereto:

[0502]

[0503] In the above, it has been combined Figures 1 to 4 The organic light emitting device according to the embodiment is described, but the embodiments of the present disclosure are not limited thereto.

[0504] A layer constituting a hole transport region, an emission layer, and a layer constituting an electron transport region may be formed in a specific region by using one or more suitable methods selected from vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, and laser induced thermal imaging (LITI).

[0505] When the layer constituting the hole transport region, the emission layer, and the layer constituting the electron transport region are formed by vacuum deposition, the deposition temperature may be about 100° C. to about 500° C., about 10 -8 Up to about 10 -3 Torr vacuum and approx. / second to approximately The vacuum deposition was performed at a deposition rate of 2000 Å / s.

[0506] When a layer constituting a hole transport region, an emission layer, and a layer constituting an electron transport region are formed by spin coating, spin coating can be performed at a coating speed of about 2000 rpm to about 5000 rpm and at a heat treatment temperature of about 80°C to about 200°C by taking into account the materials to be included in the layer to be formed and the structure of the layer to be formed.

[0507] General definitions of at least some of the substituents

[0508] As used herein, the term "C 1 -C 60 "Alkyl" refers to a linear or branched aliphatic saturated hydrocarbon monovalent group having 1 to 60 carbon atoms, examples of which include methyl, ethyl, propyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl and hexyl. As used herein, the term "C 1 -C 60 "Alkylene" refers to C 1 -C 60 The alkyl group has a divalent group having substantially the same structure.

[0509] As used herein, the term "C 2 -C 60 "Alkenyl" refers to 2 -C 60 The alkyl group is a hydrocarbon group having at least one carbon-carbon double bond at the main chain (e.g., in the middle) or at the end (e.g., terminal), examples of which include ethenyl, propenyl, and butenyl. As used herein, the term “C 2 -C 60 "Alkenylene" refers to C 2 -C 60 An alkenyl group is a divalent group having substantially the same structure.

[0510] As used herein, the term "C 2 -C 60 "Alkynyl" refers to a C 2 -C 60 The alkyl group is a hydrocarbon group having at least one carbon-carbon triple bond at the main chain (e.g., in the middle) or at the end (e.g., terminal), examples of which include ethynyl and propynyl. As used herein, the term “C 2 -C 60 "Alkynylidene" refers to C 2 -C 60 Alkynyl groups are divalent groups having substantially the same structure.

[0511] As used herein, the term "C 1 -C 60 "Alkoxy" refers to -OA 101(Among them, A 101 C 1 -C 60 An alkyl group is a monovalent group represented by an alkyl group, examples of which include a methoxy group, an ethoxy group and an isopropoxy group.

[0512] As used herein, the term "C 3 -C 10 "Cycloalkyl" refers to a monovalent saturated hydrocarbon monocyclic group having 3 to 10 carbon atoms, examples of which include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl. As used herein, the term "Cycloalkyl" refers to a monovalent saturated hydrocarbon monocyclic group having 3 to 10 carbon atoms, examples of which include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl. 3 -C 10 "Cycloalkylene" refers to 3 -C 10 The cycloalkyl group has a divalent group having substantially the same structure.

[0513] As used herein, the term "C 1 -C 10 The term "heterocycloalkyl" as used herein refers to a monovalent saturated monocyclic group having at least one heteroatom selected from N, O, Si, P and S as ring atoms and 1 to 10 carbon atoms, and examples thereof include 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl and tetrahydrothienyl. 1 -C 10 "Heterocycloalkylene" refers to a C 1 -C 10 The heterocycloalkyl group has a divalent group having substantially the same structure.

[0514] As used herein, the term "C 3 -C 10 "Cycloalkenyl" refers to a monovalent monocyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and not having aromaticity (e.g., being non-aromatic), examples of which include cyclopentenyl, cyclohexenyl, and cycloheptenyl. As used herein, the term "C 3 -C 10 "Cycloalkenylene" refers to 3 -C 10 The cycloalkenyl group is a divalent group having substantially the same structure.

[0515] As used herein, the term "C 1 -C 10 The term "heterocycloalkenyl group" refers to a monovalent monocyclic group having at least one heteroatom selected from N, O, Si, P and S as ring atoms, 1 to 10 carbon atoms and at least one double bond in its ring. 1 -C 10 Non-limiting examples of heterocycloalkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothienyl. As used herein, the term “C 1-C 10 "Heterocycloalkenylene" refers to a C 1 -C 10 The heterocycloalkenyl group has a divalent group having substantially the same structure.

[0516] As used herein, the term "C 6 -C 60 "Aryl" refers to a monovalent group having a carbocyclic aromatic system containing 6 to 60 carbon atoms. 6 -C 60 The arylene group refers to a divalent group having a carbocyclic aromatic system including 6 to 60 carbon atoms. 6 -C 60 Non-limiting examples of aryl groups include phenyl, naphthyl, anthracenyl, phenanthrenyl, pyrenyl, and When C 6 -C 60 Aryl and C 6 -C 60 When the arylene groups each include two or more rings, the rings may be fused to each other (eg, bonded together).

[0517] As used herein, the term "C 1 -C 60 The term "heteroaryl" as used herein refers to a monovalent group having a heterocyclic aromatic system having at least one heteroatom selected from N, O, Si, P and S as a ring-forming atom in addition to 1 to 60 carbon atoms. 1 -C 60 The term "heteroarylene group" refers to a divalent group having a heterocyclic aromatic system having at least one hetero atom selected from N, O, Si, P and S as a ring-forming atom in addition to 1 to 60 carbon atoms. 1 -C 60 Non-limiting examples of heteroaryl groups include pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, and isoquinolinyl. 1 -C 60 Heteroaryl and C 1 -C 60 When the heteroarylene group includes two or more rings, the rings may be condensed with each other (eg, bonded together).

[0518] As used herein, the term "C 6 -C 60 "Aryloxy" refers to -OA 102 (Among them, A 102 C 6 -C 60 Aryl), as used herein, 6 -C 60 "Arylthio" refers to -SA103 (Among them, A 103 C 6 -C 60 aryl).

[0519] The term "monovalent non-aromatic condensed polycyclic group" as used herein refers to a monovalent group having two or more rings condensed to each other (e.g., bound together), only carbon atoms (e.g., having 8 to 60 carbon atoms) as ring atoms, and not having aromaticity (e.g., being non-aromatic) in its entire molecular structure. An example of a monovalent non-aromatic condensed polycyclic group is a fluorenyl group. The term "divalent non-aromatic condensed polycyclic group" as used herein refers to a divalent group having the same structure as a monovalent non-aromatic condensed polycyclic group.

[0520] The term "monovalent non-aromatic condensed heteropolycyclic group" as used herein refers to a monovalent group having two or more rings condensed with each other (e.g., bound together), at least one heteroatom selected from N, O, Si, P, and S as ring-forming atoms other than carbon atoms (e.g., having 1 to 60 carbon atoms), and not having aromaticity (e.g., being non-aromatic) in its entire molecular structure. An example of a monovalent non-aromatic condensed heteropolycyclic group is a carbazolyl group. The term "divalent non-aromatic condensed heteropolycyclic group" as used herein refers to a divalent group having substantially the same structure as a monovalent non-aromatic condensed heteropolycyclic group.

[0521] As used herein, the term "C 5 -C 60 "Carbocyclic group" refers to a monocyclic or polycyclic group having 5 to 60 carbon atoms, wherein the ring atoms are only carbon atoms. As used herein, the term "C 5 -C 60 "Carbocyclic group" refers to aromatic carbocyclic group or non-aromatic carbocyclic group. 5 -C 60 The carbocyclic group can be a ring (such as benzene), a monovalent group (such as phenyl) or a divalent group (such as phenylene). In one or more embodiments, the carbonyl group is connected to the carbonyl group. 5 -C 60 The number of substituents of the carbocyclic group, C 5 -C 60 The carbocyclic group may be a trivalent group or a tetravalent group.

[0522] As used herein, the term "C 1 -C 60 The term "heterocyclic group" refers to a group consisting of at least one heteroatom selected from N, O, Si, P and S other than carbon (the number of carbon atoms may be in the range of 1 to 60) as a ring-forming atom. 5 -C 60 The carbocyclic group has a group having substantially the same structure.

[0523] In the present disclosure, substituted C 5 -C 60 Carbocyclic, substituted C 1 -C 60 Heterocyclic, substituted C 1 -C 20 Alkylene, substituted C 2 -C 20 Alkenylene, substituted C 3 -C 10 Cycloalkylene, substituted C 1 -C 10 Heterocycloalkylene, substituted C 3 -C 10 Cycloalkenylene, substituted C 1 -C 10 Heterocycloalkenylene, substituted C 6 -C 60 Arylene, substituted C 1 -C 60 Heteroarylene, substituted divalent non-aromatic condensed polycyclic group, substituted divalent non-aromatic condensed heteropolycyclic group, substituted C 1 -C 60 Alkyl, substituted C 2 -C 60 Alkenyl, substituted C 2 -C 60 Alkynyl, substituted C 1 -C 60 Alkoxy, substituted C 3 -C 10 Cycloalkyl, substituted C 1 -C 10 Heterocycloalkyl, substituted C 3 -C 10 Cycloalkenyl, substituted C 1 -C 10 Heterocycloalkenyl, substituted C 6 -C 60 Aryl, substituted C 6 -C 60 Aryloxy, substituted C 6 -C 60 Arylthio, substituted C 1 -C 60 Heteroaryl, substituted C 1 -C 60 Heteroaryloxy, substituted C 1 -C 60 At least one substituent of the heteroarylthio group, the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic condensed heteropolycyclic group may be selected from:

[0524] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl and C 1 -C 60 Alkoxy;

[0525] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q 11 ) and -P(=O)(Q 11 )(Q 12 ) selected from at least one of C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl and C 1 -C 60 Alkoxy;

[0526] C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic condensed heteropolycyclic groups;

[0527] are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -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 ) and -P(=O)(Q 21 )(Q 22 ) selected from at least one of the C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 1 -C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic condensed heteropolycyclic groups; and

[0528] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) and -P(=O)(Q 31 )(Q 32 ),and

[0529] Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 1 -C 60 heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, C substituted with at least one selected from deuterium, -F and cyano 1 -C 60alkyl, C substituted with at least one selected from deuterium, -F and cyano 6 -C 60 Aryl, biphenyl and terphenyl.

[0530] The term "Ph" as used herein refers to phenyl, the term "Me" as used herein refers to methyl, the term "Et" as used herein refers to ethyl, the term "ter-Bu (t-Bu)" or "Bu" as used herein refers to ethyl. t ” refers to tert-butyl, and the term “OMe” as used herein refers to methoxy.

[0531] As used herein, the term "biphenyl" refers to a "phenyl group substituted with a phenyl group". In other words, a "biphenyl group" is a group having C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0532] As used herein, the term "terphenyl" refers to a "phenyl group substituted with a biphenyl group". In other words, a "terphenyl group" is a phenyl group substituted with a C 6 -C 60 Aryl C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0533] Unless otherwise defined, * and *' as used herein refer to the binding sites to adjacent atoms in the corresponding formula.

[0534] Hereinafter, the compound according to the embodiment and the organic light emitting device according to the embodiment will be described in more detail with reference to Synthesis Examples and Examples. The expression "using B instead of A" used in describing Synthesis Examples means using B instead of A in the same molar equivalent.

[0535] Synthesis Example

[0536] Synthesis Example 1: Synthesis of Compound 1

[0537]

[0538] 1) Synthesis of intermediate 1-A

[0539] 4.50 g (16.0 mmol) of 1,4-dibromo-2-nitrobenzene, 3.84 g (16.0 mmol) of (2,4,6-trimethyl-[1,1'-biphenyl]-3-yl) boronic acid, 0.92 g (0.80 mmol) of tetrakis (triphenylphosphine) palladium and 4.42 g (32.0 mmol) of potassium carbonate were suspended in a mixed solution of 150 mL of tetrahydrofuran and distilled water (2:1). The reaction mixture was heated to a temperature of 80° C. and stirred for 3 days. The organic layer was extracted from the reaction mixture by using dichloromethane and distilled water. The organic layer was treated as follows: washed 3 times with distilled water, dried by using magnesium sulfate, filtered, and then concentrated under reduced pressure. The concentrate thus obtained was purified by column chromatography (dichloromethane / hexane=1 / 20) to obtain intermediate 1-A (yield: 58%).

[0540] 2) Synthesis of intermediate 1-B

[0541] Intermediate 1-A, 5-(1H-imidazole-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol (1.0 eq), copper iodide (0.1 eq), potassium phosphate (2.0 eq) and L-proline (0.1 eq) were suspended in 100 mL of dimethylformamide solvent. The reaction mixture was heated to a temperature of 120° C. and stirred for 12 hours. After the reaction was completed, the solvent was removed from the reaction product under reduced pressure, and an organic layer was extracted therefrom by using dichloromethane and distilled water. The organic layer was treated as follows: washed 3 times with distilled water, dried by using magnesium sulfate, filtered, and then concentrated under reduced pressure. The concentrate thus obtained was purified by column chromatography to obtain Intermediate 1-B (yield: 79%).

[0542] 3) Synthesis of intermediate 1-C

[0543] Intermediate 1-B and triphenylphosphine (3.0eq) were suspended in 45mL of 1,2-dichlorobenzene solvent. The reaction mixture was heated to a temperature of 180°C and stirred for 12 hours. After the reaction was completed, the solvent was removed from the reaction product under reduced pressure, and an organic layer was extracted therefrom by using dichloromethane and distilled water. The organic layer was treated as follows: washed 3 times with distilled water, dried by using magnesium sulfate, filtered, and then concentrated under reduced pressure. The concentrate thus obtained was purified by column chromatography. The concentrate was suspended in 50mL of ethyl acetate, heated, and stirred for 2 hours. The product thus obtained was cooled, filtered, and washed several times with diethyl ether to obtain intermediate 1-C (yield: 58%).

[0544] 4) Synthesis of intermediate 1-D

[0545] Intermediate 1-C, 2-chloro-4-tert-butylpyridine (1.2eq), S-Phos (0.04eq), tetrakis(triphenylphosphine)palladium (0.02eq), sodium tert-butoxide (1.6eq) were suspended in 80mL of toluene solvent. The reaction mixture was heated to a temperature of 110°C and stirred for 12 hours. After the reaction was completed, the solvent was removed from the reaction product under reduced pressure, and an organic layer was extracted therefrom by using dichloromethane and distilled water. The organic layer was treated as follows: washed 3 times with distilled water, dried by using magnesium sulfate, filtered, and then concentrated under reduced pressure. The concentrate thus obtained was purified by column chromatography to obtain intermediate 1-D (yield: 22%).

[0546] 5) Synthesis of intermediate 1-E

[0547] Intermediate 1-D was dissolved in acetone, and methyl iodide (1.2 eq) was added thereto. The reaction mixture was heated and stirred at room temperature for 24 hours. After the reaction was completed, the solvent was removed therefrom under reduced pressure, and the concentrate was purified by column chromatography to obtain intermediate 1-E (yield: 88%).

[0548] 6) Synthesis of Intermediate 1-F

[0549] Intermediate 1-E was dissolved in a mixed solution of methanol and distilled water (4:1), and ammonium hexafluorophosphate (1.05 eq) was added thereto. The solid thus obtained was stirred at room temperature for 12 hours. The solid was filtered and washed with distilled water and diethyl ether to obtain Intermediate 1-F (yield: 95%).

[0550] 7) Synthesis of Compound 1

[0551] Intermediate 1-F, sodium acetate (3.0 eq) and Pt(COD)Cl 2 (1.05 eq) was suspended in 1,4-dioxane solvent. The reaction mixture was heated to a temperature of 120° C. and stirred for 12 hours. After the reaction was completed, the solvent was removed therefrom under reduced pressure. The product thus obtained was purified by column chromatography to obtain compound 1 (yield: 25%).

[0552] Synthesis Example 2: Synthesis of Compound 2

[0553] Compound 2 was obtained in substantially the same manner as in Synthesis Example 1, except that deuterium-substituted methyl iodide was used instead of methyl iodide.

[0554]

[0555] Synthesis Example 3: Synthesis of Compound 3

[0556] Compound 3 was obtained in substantially the same manner as in Synthesis Example 1, except that 5-(1H-benzimidazol-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol was used instead of 5-(1H-imidazol-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol.

[0557]

[0558] Synthesis Example 4: Synthesis of Compound 4

[0559] Compound 4 was obtained in substantially the same manner as in Synthesis Example 1, except that 5-(1H-benzimidazol-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol was used instead of 5-(1H-imidazole-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol, and (2,4,6-triisopropyl-[1,1'-biphenyl]-3-yl)boric acid was used instead of (2,4,6-trimethyl-[1,1'-biphenyl]-3-yl)boric acid.

[0560]

[0561] Synthesis Example 5: Synthesis of Compound 5

[0562] Compound 5 was obtained in substantially the same manner as in Synthesis Example 1, except that 5-(1H-benzimidazol-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol was used instead of 5-(1H-imidazole-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol, and (2,4,6-trifluoro-[1,1'-biphenyl]-3-yl)boric acid was used instead of (2,4,6-trimethyl-[1,1'-biphenyl]-3-yl)boric acid.

[0563]

[0564] Synthesis Example 6: Synthesis of Compound 6

[0565] Compound 6 was obtained in substantially the same manner as in Synthesis Example 1, except that 5-(1H-benzimidazol-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol was used instead of 5-(1H-imidazole-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol, and (4-trimethylsilyl-[1,1'-biphenyl]-3-yl)boric acid was used instead of (2,4,6-trimethyl-[1,1'-biphenyl]-3-yl)boric acid.

[0566]

[0567] Synthesis Example 7: Synthesis of Compound 11

[0568] Compound 11 was obtained in substantially the same manner as in Synthesis Example 1, except that 5-(1H-imidazol-1-yl)-2',4',6'-triisopropyl-[1,1'-biphenyl]-3-ol was used instead of 5-(1H-imidazol-1-yl)-2',4',6'-trimethyl-[1,1'-biphenyl]-3-ol.

[0569]

[0570] The compounds synthesized in the synthesis examples 1 H NMR and MS / FAB are shown in Table 1.

[0571] Here, by referring to the above-described synthesis mechanism and source materials, a person of ordinary skill in the art may also easily recognize a synthesis method of compounds other than the compounds shown in Table 1 after reading the present disclosure.

[0572] Table 1

[0573]

[0574]

[0575] For the compounds synthesized in the synthesis examples, the results obtained by performing quantum simulation according to the density functional theory (DFT) calculation method (using the B3LYP hybrid function) are shown in Table 2: i) triplet metal and ligand charge transfer states ( 3 MLCT, triplet metal-to-ligand charge transfer state) percentage, ii) simulated value of maximum emission wavelength (λ max exp ), iii) triplet metal-neutral state ( 3 MC, the energy level of the triplet metal-centered state, and iv) the bond dissociation energy between the N atom of pyridine in the ligand and the metal center Pt.

[0576] Table 2

[0577]

[0578]

[0579]

[0580] Example

[0581] Example 1

[0582] Corning 15Ω / cm 2 The ITO glass substrate was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonicated using isopropyl alcohol and pure water for 5 minutes each, and then cleaned by exposure to ultraviolet rays and ozone for 30 minutes. Then, the ITO glass substrate was provided to a vacuum deposition apparatus.

[0583] 2-TNATA was vacuum deposited on the anode of the ITO glass substrate to form a A hole injection layer having a thickness of , NPB is vacuum deposited on the hole injection layer to form a The hole transport layer has a thickness of .

[0584] BCPDS and POPCPA (co-host) (the weight ratio of BCPDS to POPCPA is 1:1) and compound 1 (dopant) are co-deposited on the hole transport layer at a weight ratio of 90:10 to form a The thickness of the emission layer.

[0585] TSPO1 is deposited on the emitter layer to form a A hole blocking layer with a thickness of 1000 nm is formed, and Alq is deposited on the hole blocking layer. 3 To form a An electron transport layer having a thickness of , LiF is deposited on the electron transport layer to form a An electron injection layer having a thickness of , and Al is vacuum deposited on the electron injection layer to form a A cathode with a thickness of is formed, thereby completing the manufacture of the organic light-emitting device.

[0586]

[0587] Examples 2 to 5 and Comparative Examples 1 and 2

[0588] Organic light emitting devices were manufactured in substantially the same manner as in Example 1, except that the compounds shown in Table 3 were each used as a dopant instead of Compound 1 in forming the emission layer.

[0589] Evaluation example

[0590] The driving voltage, current density, brightness, luminous efficiency, emission color, and maximum emission wavelength of the organic light-emitting devices manufactured according to Examples 1 to 5 and Comparative Examples 1 and 2 were measured by using a Keithley SMU 236 and a brightness meter PR650, and the amount of time (half-life, T) that elapsed when the brightness was 95% of the initial brightness (100%) was measured.95 The results are shown in Table 3.

[0591] Table 3

[0592]

[0593]

[0594] Referring to Table 3, it can be seen that compared with the driving voltage, brightness, luminous efficiency and lifespan characteristics of the organic light-emitting devices of Comparative Examples 1 and 2, the organic light-emitting devices of Examples 1 to 5 have low driving voltage and excellent brightness, luminous efficiency and lifespan characteristics.

[0595] An organic light emitting device including an organometallic compound may have low driving voltage, high brightness, high efficiency, and a long lifespan.

[0596] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should be considered as available for other similar features or aspects in other embodiments.

[0597] Unless otherwise specified, the same reference numerals denote the same elements throughout the drawings and the written description, and thus their description will not be repeated. In the drawings, the relative sizes of elements, layers, and regions may be exaggerated for clarity.

[0598] It will be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the spirit and scope of the present disclosure, the first element, component, region, layer or part described above may be named as the second element, component, region, layer or part.

[0599] For ease of explanation, spatially relative terms such as "under", "below", "below", "below", "above", "on", etc. may be used herein to describe the relationship of one element or feature to another (additional) element or feature as shown in the figures. It will be understood that the spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, the element described as "below" or "below" or "below" other elements or features will then be positioned as "above" the other elements or features. Therefore, the example terms "below" and "under" can include both above and below orientations. The device can be positioned otherwise (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0600] It will be understood that when an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, it can be directly on, directly connected to, or directly coupled to the other element or layer, or one or more intervening elements or layers may be present. Additionally, it will be understood that when an element or layer is referred to as being “between” two elements or layers, it can be the only element or layer between the two elements or layers, or one or more intervening elements or layers may also be present.

[0601] The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular forms "one" and "a (kind / person)" are also intended to include plural forms. It will also be understood that when the terms "comprise", "include" and their variations are used in this specification, the stated features, wholes, effects, operations, elements and / or components are indicated, but the presence or addition of one or more other features, wholes, effects, operations, elements, components and / or their groups are not excluded.

[0602] As used herein, the terms "substantially," "approximately," and similar terms are used as terms of approximation and not as terms of degree, and are intended to account for the inherent deviations in measurements or calculations that would be recognized by one of ordinary skill in the art. In addition, when describing embodiments of the present disclosure, the use of "may" refers to "one or more embodiments of the present disclosure." As used herein, the term "using" and variations thereof may be considered synonymous with the term "utilizing" and variations thereof, respectively. In addition, the term "exemplary" is intended to indicate an example or illustration.

[0603] In addition, any numerical range stated herein is intended to include all subranges of the same numerical precision contained in the stated range. For example, the range "1.0 to 10.0" is intended to include all subranges between the stated minimum value 1.0 and the stated maximum value 10.0 (and including the stated minimum value 1.0 and the stated maximum value 10.0), that is, 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 stated herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit stated in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification (including claims) to explicitly state any subrange contained in the scope explicitly stated herein.

[0604] Although one or more embodiments have been described with reference to the drawings, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the claims and their equivalents.

Claims

1. An organic light-emitting device, comprising: a first electrode; a second electrode, facing the first electrode; as well as an organic layer, located between the first electrode and the second electrode and including an emission layer, Wherein, the organic layer includes an organic metal compound represented by Formula 1: Formula 1 Among them, in formula 1, M1 is selected from platinum, palladium, copper, silver, gold, rhodium, iridium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium and thulium, Ring A1 to Ring A4 are independently selected from C5-C 60 Carbocyclic and C1-C 60 Heterocyclic group, Y1 to Y4 are independently N or C, T1 to T4 are independently selected from a single bond, O and S, L1 to L4 are each independently selected from a single bond, *-O-*', *-S-*', *-C(R8)(R9)-*', *-C(R8)=*', *=C(R9)-*', *-C(R8)=C(R9)-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R8)-*', *-N(R8)-*', *-P(R8)-*', *-Si(R8)(R9)-*' and *-Ge(R8)(R9)-*', a1 to a4 are each independently an integer from 0 to 3, When a1 is 0, ring A1 and ring A2 are not connected to each other, when a2 is 0, ring A2 and ring A3 are not connected to each other, when a3 is 0, ring A3 and ring A4 are not connected to each other, and when a4 is 0, ring A4 and ring A1 are not connected to each other, Ar1 is selected from substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 Alkenyl, substituted or unsubstituted C2-C 60 Alkynyl, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 Cycloalkyl, substituted or unsubstituted C1-C 10 Heterocycloalkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocycloalkenyl, substituted or unsubstituted C6-C 60 Aryl, substituted or unsubstituted C6-C 60 Aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 Heteroaryl, substituted or unsubstituted C1-C 60 Heteroaryloxy, substituted or unsubstituted C1-C 60 heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, R1 to R9 are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 Alkenyl, substituted or unsubstituted C2-C 60 Alkynyl, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 Cycloalkyl, substituted or unsubstituted C1-C 10 Heterocycloalkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocycloalkenyl, substituted or unsubstituted C6-C 60 Aryl, substituted or unsubstituted C6-C 60 Aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 Heteroaryl, substituted or unsubstituted C1-C 60 Heteroaryloxy, substituted or unsubstituted C1-C 60 heteroarylthio, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2) and -P(=S)(Q1)(Q2), R8 and R1, R8 and R2, R8 and R3, R8 and R4 or R8 and R9 are optionally linked to form a substituted or unsubstituted C5-C 60 Carbocyclic or substituted or unsubstituted C1-C 60 Heterocyclic group, b1 to b4 are each independently an integer from 1 to 8, * and *' both represent the binding sites with adjacent atoms. The substituted C1-C 60 Alkyl, the substituted C2-C 60 Alkenyl, the substituted C2-C 60 Alkynyl, the substituted C1-C 60 Alkoxy, the substituted C3-C 10 Cycloalkyl, the substituted C1-C 10 Heterocycloalkyl, the substituted C3-C 10 Cycloalkenyl, the substituted C1-C 10 Heterocycloalkenyl, the substituted C6-C 60 Aryl, the substituted C6-C 60 Aryloxy, the substituted C6-C 60 Arylthio, the substituted C1-C 60 Heteroaryl, the substituted C1-C 60 Heteroaryloxy, the substituted C1-C 60 Heteroarylthio, the substituted C5-C 60 Carbocyclic group, the substituted C1-C 60 At least one substituent in the heterocyclic group, the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic condensed heteropolycyclic group is selected from: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl and C1-C 60 Alkoxy; are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 ) and -P(=O)(Q 11 )(Q 12 ) selected from at least one of C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl and C1-C 60 Alkoxy; C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic condensed heteropolycyclic groups, biphenyl groups, and terphenyl groups; are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -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 ) and -P(=O)(Q 21 )(Q 22 ) selected from at least one of C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic condensed heteropolycyclic groups; and -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) and -P(=O)(Q 31 )(Q 32 ), and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, substituted with C1-C 60 Alkyl C6-C 60 Aryl, substituted with C6-C 60 C6-C 60 Aryl, terphenyl, C1-C 60 Heteroaryl, substituted with C1-C 60 Alkyl C1-C 60 Heteroaryl, substituted with C6-C 60 C1-C 60 heteroaryl, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic condensed heteropolycyclic group, Wherein, when ring A4 is a benzimidazole group, Ar1 is selected from phenyl, naphthyl and pyridyl; and phenyl, naphthyl and pyridyl are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl.

2. The organic light emitting device according to claim 1, wherein: The first electrode is an anode, The second electrode is a cathode, The organic 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 buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

3. The organic light emitting device according to claim 1, wherein: The emission layer includes the organic metal compound.

4. The organic light emitting device according to claim 3, wherein: The emission layer further includes a host, and an amount of the organic metal compound is in a range of 0.1 parts by weight to 50 parts by weight based on 100 parts by weight of the emission layer.

5. The organic light emitting device according to claim 3, wherein: The emission layer is configured to emit blue light having a maximum emission wavelength of 420 nm or more and 490 nm or less.

6. The organic light emitting device according to claim 2, wherein: The hole transport region includes a p-dopant, and The p-dopant has a lowest unoccupied molecular orbital energy level of -3.5 eV or less.

7. The organic light emitting device according to claim 2, wherein: The electron transport region includes a phosphine oxide-containing compound or a silyl group-containing compound.

8. An organometallic compound, the organometallic compound is represented by Formula 1: Formula 1 in, In formula 1, M1 is selected from platinum, palladium, copper, silver, gold, rhodium, iridium, ruthenium, osmium, titanium, zirconium, hafnium, europium, terbium and thulium, Ring A1 to Ring A4 are independently selected from C5-C 60 Carbocyclic and C1-C 60 Heterocyclic group, Y1 to Y4 are independently N or C, T1 to T4 are independently selected from a single bond, O and S, L1 to L4 are each independently selected from a single bond, *-O-*', *-S-*', *-C(R8)(R9)-*', *-C(R8)=*', *=C(R9)-*', *-C(R8)=C(R9)-*', *-C(=O)-*', *-C(=S)-*', *-C≡C-*', *-B(R8)-*', *-N(R8)-*', *-P(R8)-*', *-Si(R8)(R9)-*' and *-Ge(R8)(R9)-*', a1 to a4 are each independently an integer from 0 to 3, When a1 is 0, ring A1 and ring A2 are not connected to each other, when a2 is 0, ring A2 and ring A3 are not connected to each other, when a3 is 0, ring A3 and ring A4 are not connected to each other, and when a4 is 0, ring A4 and ring A1 are not connected to each other, Ar1 is selected from substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 Alkenyl, substituted or unsubstituted C2-C 60 Alkynyl, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 Cycloalkyl, substituted or unsubstituted C1-C 10 Heterocycloalkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocycloalkenyl, substituted or unsubstituted C6-C 60 Aryl, substituted or unsubstituted C6-C 60 Aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 Heteroaryl, substituted or unsubstituted C1-C 60 Heteroaryloxy, substituted or unsubstituted C1-C 60 heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, R1 to R9 are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 Alkenyl, substituted or unsubstituted C2-C 60 Alkynyl, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 Cycloalkyl, substituted or unsubstituted C1-C 10 Heterocycloalkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocycloalkenyl, substituted or unsubstituted C6-C 60 Aryl, substituted or unsubstituted C6-C 60 Aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 Heteroaryl, substituted or unsubstituted C1-C 60 Heteroaryloxy, substituted or unsubstituted C1-C 60 heteroarylthio, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2) and -P(=S)(Q1)(Q2), R8 and R1, R8 and R2, R8 and R3, R8 and R4 or R8 and R9 are optionally linked to form a substituted or unsubstituted C5-C 60 Carbocyclic or substituted or unsubstituted C1-C 60 Heterocyclic group, b1 to b4 are each independently an integer from 1 to 8, * and *' both represent the binding sites with adjacent atoms. The substituted C1-C 60 Alkyl, the substituted C2-C 60 Alkenyl, the substituted C2-C 60 Alkynyl, the substituted C1-C 60 Alkoxy, the substituted C3-C 10 Cycloalkyl, the substituted C1-C 10 Heterocycloalkyl, the substituted C3-C 10 Cycloalkenyl, the substituted C1-C 10 Heterocycloalkenyl, the substituted C6-C 60 Aryl, the substituted C6-C 60 Aryloxy, the substituted C6-C 60 Arylthio, the substituted C1-C 60 Heteroaryl, the substituted C1-C 60 Heteroaryloxy, the substituted C1-C 60 Heteroarylthio, the substituted C5-C 60 Carbocyclic group, the substituted C1-C 60 At least one substituent in the heterocyclic group, the substituted monovalent non-aromatic condensed polycyclic group and the substituted monovalent non-aromatic condensed heteropolycyclic group is selected from: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl and C1-C 60 Alkoxy; are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 ) and -P(=O)(Q 11 )(Q 12 ) selected from at least one of C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl and C1-C 60 Alkoxy; C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic condensed heteropolycyclic groups, biphenyl groups, and terphenyl groups; are substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, -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 ) and -P(=O)(Q 21 )(Q 22 ) selected from at least one of C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic condensed heteropolycyclic groups; and -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) and -P(=O)(Q 31 )(Q 32 ), and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, substituted with C1-C 60 Alkyl C6-C 60 Aryl, substituted with C6-C 60 C6-C 60 Aryl, terphenyl, C1-C 60 Heteroaryl, substituted with C1-C 60 Alkyl C1-C 60 Heteroaryl, substituted with C6-C 60 C1-C 60 heteroaryl, monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic condensed heteropolycyclic group, Wherein, when ring A4 is a benzimidazole group, Ar1 is selected from phenyl, naphthyl and pyridyl; and phenyl, naphthyl and pyridyl are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl.

9. The organometallic compound according to claim 8, wherein: M1 is selected from Pt, Pd, Cu, Ag and Au.

10. The organometallic compound according to claim 8, wherein: Ring A1 to Ring A4 are each independently represented by one selected from Formula 2-1 to Formula 2-43: Among them, in Formula 2-1 to Formula 2-43, X 21 To X 23 are independently selected from C(R 24 ) and C-*, where from X 21 To X 23 At least two of the selected ones are C-*, X 24 is N-*, and X 25 and X 26 are independently selected from C(R 24 ) and C-*, where from X 25 and X 26 At least one of the selected is C-*, X 27 and X 28 are independently selected from N, N(R 25 ) and N-*, and X 29 Selected from C(R 24 ) and C-*, wherein i) from X 27 and X 28 At least one of the selected ones is N-*, and X 29 C-*, or ii) X 27 and X 28 are all N-*, and X 29 C(R 24 ), R 21 To R 25 are independently the same as defined in R1 to R4 in Formula 1, b21 is selected from 1, 2 and 3, b22 is selected from 1, 2, 3, 4 and 5, b23 is selected from 1, 2, 3 and 4, b24 is selected from 1 and 2, and *Indicates the binding site with the adjacent atom.

11. The organometallic compound according to claim 8, wherein: Ring A4 is a group represented by one selected from Formula 3-1 and Formula 3-2: Among them, in formula 3-1 and formula 3-2, Y 31 To Y 36 are independently N or C(R4), R 31 Same as defined in conjunction with R4 in claim 8, and * and *' both indicate the binding sites with adjacent atoms.

12. The organometallic compound according to claim 8, wherein: T1 to T4 are all single bonds at the same time; T1 is selected from O and S, and T2 to T4 are all single bonds; T2 is selected from O and S, and T1, T3 and T4 are all single bonds; T3 is selected from O and S, and T1, T2 and T4 are all single bonds; or T4 is selected from O and S, and T1, T2 and T3 are all single bonds.

13. The organometallic compound according to claim 8, wherein: L1 to L4 are each independently selected from a single bond, *-O-*', *-S-*', *-C(R8)(R9)-*', *-C(R8)=*', *=C(R9)-*', *-B(R8)-*', *-N(R8)-*', *-Si(R8)(R9)-*' and *-P(R8)-*'.

14. The organometallic compound according to claim 8, wherein: a1, a2, and a3 are all 1, and a4 is 0.

15. The organometallic compound according to claim 8, wherein: Ar1 is selected from: C1-C 20 Alkyl and C1-C 20 Alkoxy; C1-C1-C2-substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, phenyl and biphenyl 20 Alkyl, C2-C 20 Alkenyl and C1-C 20 Alkoxy; Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, oxazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, and indolocarbazolyl; and All are substituted with deuterium, -F, -Cl, -Br, -I, cyano, C1-C 20 Alkyl, C2-C 20 Alkenyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazole yl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothioyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothioyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothioyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, indolocarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)(Q 31 )、-S(=O)2(Q 31 )、-P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32 ) is at least one selected from cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, oxazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl and indolocarbazolyl, and Q 31 To Q 33 are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60 heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, C1-C1 substituted with at least one selected from deuterium, -F and cyano group 60 alkyl, a C6-C6 substituted with at least one selected from deuterium, -F and cyano 60 Aryl, biphenyl and terphenyl.

16. The organometallic compound according to claim 8, wherein: Ar1 is selected from: methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl; Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl groups, all of which are substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and cyano; phenyl, naphthyl, and pyridyl; and Phenyl, naphthyl and pyridyl are all substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl and trimethylsilyl.

17. The organometallic compound according to claim 8, wherein: R1 to R9 are independently selected from: Hydrogen, deuterium, -F, -Cl, -Br, -I, cyano, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl and C1-C 20 Alkoxy; C1-C1-C2-substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, phenyl and biphenyl 20 Alkyl and C1-C 20 Alkoxy; Cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzosilolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzosilyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzosilyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthosilyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, and indolocarbazolyl; All are substituted with deuterium, -F, -Cl, -Br, -I, cyano, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazole yl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothioyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothioyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothioyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, indolocarbazolyl, -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)(Q 31 )、-S(=O)2(Q 31 )、-P(=O)(Q 31 )(Q 32 ) and -P(=S)(Q 31 )(Q 32 ) is at least one selected from cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, pentalenyl, indenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, dibenzofluorenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, benzo[9,10]phenanthrenyl, pyrenyl, yl, peryl, pentacene, pyrrolyl, thienyl, furanyl, thirolyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, isoindolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthridinyl, acridinyl, phenanthrolinyl, phenazinyl, benzimidazolyl, benzofuranyl, benzothienyl, benzothirolyl, benzothiazolyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, oxazolyl, tetrazolyl, thiadiazolyl, oxadiazolyl, triazine, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzothioyl, benzocarbazolyl, naphthobenzofuranyl, naphthobenzothiophenyl, naphthobenzothiophenyl, dibenzocarbazolyl, dinaphthofuranyl, dinaphthothiophenyl, dinaphthothiophenyl, imidazopyridyl, imidazopyrimidyl, oxazolopyridyl, thiazopyridyl, benzonaphthyridinyl, azafluorenyl, azaspirobifluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiophenyl, indenopyrrolyl, indolopyrrolyl, indenocarbazolyl, and indolocarbazolyl; and and Q1 to Q3 and Q 31 To Q 33 are independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy, C6-C 60 Arylthio, C1-C 60 Heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60 heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic condensed heteropolycyclic group, C1-C1 substituted with at least one selected from deuterium, -F and cyano group 60 alkyl, a C6-C6 substituted with at least one selected from deuterium, -F and cyano 60 Aryl, biphenyl and terphenyl.

18. The organometallic compound according to claim 8, wherein: At least one selected from R1, R3 and R4 is selected from: deuterium, -F, -Cl, -Br, -I, cyano, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, and tert-butyl; Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl, each of which is substituted with at least one selected from deuterium, -F, -Cl, -Br, -I and cyano; phenyl, naphthyl, and pyridyl; and Phenyl, naphthyl and pyridyl are all substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, cyano, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl and tert-butyl.

19. The organometallic compound according to claim 8, wherein: The organometallic compound is represented by Formula 1A or Formula 1B: Formula 1A Formula 1B Wherein, in Formula 1A and Formula 1B, M1, L2, Ar1 and R5 to R7 are independently the same as those described in claim 8, R 1a To R 1d are independently the same as defined in conjunction with R1 in claim 8, R 2a and R 2b are independently the same as defined in conjunction with R2 in claim 8, R 3a To R 3c are independently the same as defined in conjunction with R3 in claim 8, and R 4a To R 4e are independently the same as defined in conjunction with R4 in claim 8.

20. The organometallic compound according to claim 8, wherein: The organometallic compound is selected from Compound 1 to Compound 12:

Images