Organic light emitting device and apparatus including the same

Abstract

This application discloses an organic light-emitting device and an apparatus including the same. The organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer includes an emitting layer, a first auxiliary layer, a second auxiliary layer, and an electron transport layer, the first auxiliary layer and the second auxiliary layer being disposed between the emitting layer and the electron transport layer, the first auxiliary layer including a first compound comprising a carbocyclic group having three or more rings, and the second auxiliary layer including: (i) a second compound as a bipolar compound, (ii) a third compound as a hole transport compound and a fourth compound as an electron transport compound, or (iii) a second compound as a bipolar compound and a fourth compound as an electron transport compound.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2019-0100531, filed on August 16, 2019, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more aspects of embodiments of this disclosure relate to organic light-emitting devices and devices including the same. Background Technology

[0004] Organic light-emitting devices are self-emitting devices that produce full-color images, and compared with devices in the art, organic light-emitting devices can have wide viewing angles, high contrast, short response times and / or superior characteristics in terms of brightness, driving voltage and / or response speed.

[0005] An organic light-emitting device may include a first electrode disposed on a substrate, and a hole transport region, an emitter layer, an electron transport region, and a second electrode sequentially disposed on the first electrode. Holes supplied by the first electrode can move towards the emitter layer through the hole transport region, and electrons supplied by the second electrode can move towards the emitter layer through the electron transport region. Charge carriers (such as holes and electrons) recombine in the emitter layer to generate excitons. These excitons can transition from an excited state to a ground state, thereby generating light. Summary of the Invention

[0006] One or more aspects of embodiments of this disclosure relate to organic light-emitting devices and devices including the same.

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

[0008] One or more exemplary embodiments of this disclosure provide an organic light-emitting device, the organic light-emitting device comprising:

[0009] First electrode;

[0010] The second electrode facing the first electrode; and

[0011] Organic layer between the first and second electrodes

[0012] The organic layer includes an emission layer, a first auxiliary layer, a second auxiliary layer, and an electron transport layer.

[0013] The first and second auxiliary layers are located between the emission layer and the electron transport layer.

[0014] The first auxiliary layer includes a first compound comprising a carbocyclic group having three or more rings, and

[0015] The second auxiliary layer includes (i) a second compound as a bipolar compound, (ii) a third compound as a hole transport compound and a fourth compound as an electron transport compound, or (iii) a second compound as a bipolar compound and a fourth compound as an electron transport compound.

[0016] One or more exemplary embodiments of this disclosure provide an apparatus including an organic light-emitting device and a thin-film transistor, wherein the thin-film transistor includes a source electrode, an active layer, and a drain electrode, and a first electrode of the organic light-emitting device is in electrical contact with one of the source electrode and the drain electrode selected from the thin-film transistor. Attached Figure Description

[0017] The above and other aspects, features, and advantages of certain embodiments of this disclosure will become more apparent from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the organic light-emitting device according to the embodiment; and

[0019] Figure 2 This is a schematic diagram of the structure of an organic light-emitting device according to another embodiment. Detailed Implementation

[0020] The embodiments will now be described in more detail with reference to the accompanying drawings, examples of which are illustrated in the accompanying drawings, wherein the same reference numerals refer to the same elements throughout and their repeated descriptions are not provided. In this regard, the embodiments may take different forms and should not be construed as limited to the descriptions set forth herein. Therefore, only embodiments are described below with reference to the accompanying drawings to explain aspects of this description. As used herein, the term “and / or” includes any and all combinations of one or more of the associated enumerated items. Throughout this disclosure, the expression “at least one of a, b, or c” indicates only a, only b, only c, both a and b, both a and c, both b and c, all a, b, and c, or variations thereof. For example, the term “at least one” modifies an entire column of elements, but not a single element in that column. Furthermore, when describing embodiments of this disclosure, the word “may” is used to refer to “one or more embodiments of this disclosure.”

[0021] As used herein, the term "organic layer" can refer to a single layer and / or multiple layers disposed between the first and second electrodes of an organic light-emitting device. Materials included in the "organic layer" are not limited to organic materials.

[0022] As used herein, the expression “(organic layer) comprises compounds represented by Formula 1” can refer to the case where “(organic layer) comprises the same compound represented by Formula 1 (e.g., one compound)” and the case where “(organic layer) comprises two or more different compounds represented by Formula 1”.

[0023] It should be understood that when an element is referred to as being "on" or "connected" to another element, it may be directly on or directly connected to the other element, or one or more intermediate elements may be present. When an element is referred to as being "directly" on or "directly connected" to another element, no intermediate elements are present.

[0024] The embodiments of this disclosure will be described in more detail below with reference to the accompanying drawings.

[0025] [ Figure 1 and Figure 2 [Description]

[0026] Figure 1 and Figure 2 These are schematic cross-sectional views of organic light-emitting devices 10 and 20 according to embodiments. Organic light-emitting device 10 includes a first electrode 110, an organic layer 150, and a second electrode 190. The organic layer 150 may include an emitting layer 151.

[0027] See Figure 1 and Figure 2 The organic light-emitting device 10 may include: a first electrode 110; a second electrode 190 facing the first electrode 110; and an organic layer 150 between the first electrode 110 and the second electrode 190.

[0028] The organic layer 150 may include an emission layer 151 and an electron transport region 170 including a first auxiliary layer 171, a second auxiliary layer 172, and an electron transport layer 173.

[0029] The first auxiliary layer 171 and the second auxiliary layer 172 may be disposed between the emission layer 151 and the electron transport layer 173.

[0030] The first auxiliary layer 171 may include a first compound comprising a carbocyclic group having three or more rings, and

[0031] The second auxiliary layer 172 may include (i) a second compound as a bipolar compound, (ii) a third compound as a hole transport compound, and a fourth compound as an electron transport compound; or (iii) a second compound as a bipolar compound and a fourth compound as an electron transport compound.

[0032] In an organic light-emitting device according to one or more embodiments, the layer adjacent to (or immediately adjacent to) the electron transport region of the emission layer may include multiple layers comprising a first auxiliary layer, a second auxiliary layer, and an electron transport layer; and the electron transport characteristics of this layer can be controlled by introducing the aforementioned compound into the first and second auxiliary layers. Therefore, an emission region in which holes and electrons recombine can be formed at the center of the emission layer. Thus, it is possible to prevent or reduce electron penetration into regions other than the emission layer, and / or material degradation at the interface between the emission layer and the hole transport region, and to improve the current efficiency and lifetime characteristics of the organic light-emitting device.

[0033] In one embodiment, a first auxiliary layer 171 may be disposed on an emission layer 151, a second auxiliary layer 172 may be disposed on the first auxiliary layer 171, and an electron transport layer 173 may be disposed on the second auxiliary layer 172.

[0034] In one embodiment, the first auxiliary layer 171 may be in direct contact with the emitter layer 151. For example, the first auxiliary layer 171 may be present at the interface between the emitter layer 151 and the second auxiliary layer 172.

[0035] When the first auxiliary layer 171 in the organic light-emitting device 10 is in direct contact with the emission layer 151, the emission region in the emission layer 151 can be adjusted to be formed at the center of the emission layer 151. Therefore, the lifespan of the organic light-emitting device can be improved.

[0036] The first auxiliary layer may include or be formed of a first compound, the first compound including a carbocyclic group having three or more rings.

[0037] In one embodiment, the first compound may be a compound represented by Formula 1:

[0038] Formula 1

[0039]

[0040] In Equation 1,

[0041] A1 can be selected from phenatenyl, phenanthryl, anthraceneyl, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, tetraphenyl, francyl, perylene, and benzophenanthryl.

[0042] L1 can be either self-substituted or unsubstituted C3-C 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0043] a1 can be an integer selected from 0 to 5.

[0044] Ar1 can be either self-substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups.

[0045] b1 can be an integer selected from 1 to 8.

[0046] n1 can be an integer selected from 1 to 8.

[0047] R1 can be selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), and -P(=O)(Q1)(Q2),

[0048] c1 can be an integer selected from 1 to 10.

[0049] Replacement C3-C10 Cycloalkylene, substituted C1-C 10 Heterocyclic alkyl groups, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 aryl, substituted C1-C 60 Heteroaryl groups, substituted divalent nonaromatic fused polycyclic groups, substituted divalent nonaromatic fused heterocyclic groups, substituted C1-C 60 Alkyl, substituted C2-C 60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60 Alkoxy, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthioyl, substituted C1-C 60 Heteroaryl, substituted monovalent nonaromatic fused polycyclic groups, substituted monovalent nonaromatic fused heterocyclic groups, substituted C5-C 60 Carbocyclic groups and substituted C1-C 60 At least one substituent in the heterocyclic group may be selected from:

[0050] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkoxy;

[0051] Each is substituted by at least one of the following C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );

[0052] C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups;

[0053] Each is substituted by at least one of the following C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );as well as

[0054] -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

[0055] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl and terphenyl.

[0056] In one embodiment, A1 in Formula 1 may be selected from phenanthrene, anthracene, triphenylene, pyrene, 1,2-benzophenanthrene, and benzophenanthrene. In one or more embodiments, L1 in Formula 1 may be a group represented by one of Formulas 3-1 to 3-26:

[0057]

[0058] In equations 3-1 to 3-26,

[0059] Z1 to Z4 can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], phenatenyl, anthracene, fluoranyl, triphenylene, pyridyl, pyrazinyl, pyrimidinyl, quinolinyl, isoquinolinyl, benzo[quinolinyl], naphthidyl, quinoxalinyl, quinazolinyl, carbazole, phenanthridine, acridineyl, phenanthrolinel, phenazinyl, triazinyl, dibenzofuranyl, dibenzothiophene, -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 ) and -B(Q 31 (Q) 32 ),

[0060] d3 can be an integer selected from 1 to 3.

[0061] d4 can be an integer selected from 1 to 4.

[0062] d5 can be an integer selected from 1 to 5.

[0063] d6 can be an integer selected from 1 to 6.

[0064] d8 can be an integer selected from 1 to 8.

[0065] Q 31 To Q 33 Each can be independently selected from hydrogen, deuterium, and C1-C. 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl, and

[0066] * and *' each indicate the binding site with the adjacent atom.

[0067] In one embodiment, in Formula 1, Ar1 may be a group represented by one selected from Formulas 5-1 to 5-26, and

[0068] R1 can be selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C20 Alkoxy groups and groups represented by one of formulas 5-1 to 5-26:

[0069]

[0070]

[0071] In equations 5-1 to 5-26,

[0072] Y 31 and Y 32 Each can be independently represented as O, S, C(Z) 33 (Z) 34 ), N(Z 33 ) or Si(Z 33 (Z) 34 ),

[0073] Z 31 To Z 34 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 alkenyl, C1-C 20 alkynyl group, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, phenanthryl, anthraceneyl, triphenylene, pyridyl, pyrimidinyl, carbazoleyl, and triazineyl.

[0074] e3 can be an integer selected from 1 to 3.

[0075] e4 can be an integer selected from 1 to 4.

[0076] e5 can be an integer selected from 1 to 5.

[0077] e6 can be an integer selected from 1 to 6.

[0078] e7 can be an integer selected from 1 to 7.

[0079] e9 can be an integer selected from 1 to 9, and

[0080] * Indicates the binding site with adjacent atoms.

[0081] In one embodiment, the first compound may be represented by one selected from formulas 10-1 to 10-6:

[0082] Equation 10-1

[0083]

[0084] Equation 10-2

[0085]

[0086] Equation 10-3

[0087]

[0088] Equation 10-4

[0089]

[0090] Equation 10-5

[0091]

[0092] Equation 10-6

[0093]

[0094] In equations 10-1 to 10-6,

[0095] L 11 and L 12 Each can be independently described as identical to the one combined with L1.

[0096] a11 and a12 can each be an integer selected from 0 to 5 independently.

[0097] Ar 11 and Ar 12 Each can be independently described as identical to the one combined with Ar1.

[0098] b11 and b12 can each be an integer selected from 1 to 5 independently, and

[0099] R 101 To R 111 Each can independently combine with R 10 The descriptions are the same.

[0100] In one embodiment, the first compound does not include a ring containing nitrogen with depleted π electrons. "A ring containing nitrogen with depleted π electrons" can be the same as described below, for example, a C1-C ring having at least one *-N=*' moiety as the cyclizing portion. 60 Heterocyclic groups.

[0101] When the first auxiliary layer includes the first compound as described above, it can prevent or reduce the penetration of electrons into regions other than the emission layer, so that the materials forming the emission layer and the hole transport region (e.g., the materials at the interface between the emission layer and the hole transport region) do not deteriorate, and can improve the current efficiency and lifetime characteristics of the organic light-emitting device.

[0102] In one embodiment, the first auxiliary layer may include at least one first compound selected from compounds 1-1 to 1-18:

[0103]

[0104] In one embodiment, the second auxiliary layer 172 may be in direct contact with the first auxiliary layer 171 and the electron transport layer 173. For example, the second auxiliary layer 172 may be present at the interface between the first auxiliary layer 171 and the electron transport layer 173.

[0105] The second auxiliary layer may include: (i) a second compound as a bipolar compound, (ii) a third compound as a hole transport compound and a fourth compound as an electron transport compound, or (iii) a second compound as a bipolar compound and a fourth compound as an electron transport compound.

[0106] In one embodiment, the second compound may be a compound represented by Formula 2.

[0107] In one embodiment, the third compound may be a compound represented by Formula 3.

[0108] In one embodiment, the fourth compound may be a compound represented by Formula 4.

[0109] Formula 2

[0110]

[0111] Formula 3

[0112]

[0113] Formula 4

[0114]

[0115] In equations 2, 3, and 4,

[0116] Y1 can be selected from single key, -O-, -S-, -C(R) 24 (R) 25 )-、-N(R 24 )-、-Si(R 24 (R) 25 )-, -C(=O)-, -S(=O)2-, -B(R 24 )-、-P(R 24 - and -P(=O)(R 24 (R) 25 )-,

[0117] k1 can be 0 or 1.

[0118] CY 21 CY 22 CY 31 and CY 32 Each can be independently classified as C5-C 60 Carbocyclic groups or C1-C 60 Heterocyclic groups,

[0119] X 41 It can be N or C[(L 44 ) a44 -(R 41 )], X 42 It can be N or C[(L 45 ) a45 -(R 42 )], X 43 It can be N or C[(L 46 ) a46 -(R 43 )],

[0120] L 21 To L 23 L 31 To L 33 and L 41 To L 46 Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0121] Ar 21 To Ar 23 Each can be independently selected from groups represented by free formula 2A, substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups.

[0122] Selected from Ar21 To Ar 23 At least one of them may be a group represented by formula 2A, or CY 21 and CY 22 At least one of them can be C1-C including the part *=N-*'. 60 Heterocyclic groups,

[0123] Ar 31 To Ar 33 and Ar 41 To Ar 43 Each can be independently selected from substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups.

[0124] a21 to a23, a31 to a33, and a41 to a46 can each be an integer selected from 0 to 3 independently.

[0125] b21 to b23, b31 to b33, and b41 to b46 can each be an integer selected from 0 to 8 independently.

[0126] c21, c22, c31, and c32 can each be an integer selected from 1 to 8 independently.

[0127] n21, n22, n31, and n32 can each be an integer selected from 0 to 8 independently.

[0128] Formula 2A

[0129]

[0130] In Equation 2A,

[0131] X 21 To X 23 Each can be independently C or N.

[0132] When X 21 To X 23 When each of the terms is C, R 23 (multiple R) 23 At least one of them may be -F; cyano; or a C1-C group substituted with at least one of -F and cyano. 60 alkyl,

[0133] c23 can be an integer selected from 1 to 5.

[0134] R 21 To R 25 R 31 R 32 and R 41 To R 43 Each can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), and -P(=O)(Q1)(Q2),

[0135] Selected from Ar 21 To Ar 23 Ar 31 To Ar 33 Ar 41 To Ar 43 R 21 To R 25 R 31 R 32 and R 41 To R 43 Two or more substituents may optionally be connected to each other to form substituted or unsubstituted C5-C 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups,

[0136] * Indicates the binding site with adjacent atoms.

[0137] Replacement C5-C 60 Carbocyclic groups, substituted C1-C 60 Heterocyclic groups, substituted C1-C 60 Alkyl, substituted C2-C 60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60 Alkoxy, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthioyl, substituted C1-C 60 heteroaryl, substituted C1-C 60 Heteroaryl groups, substituted C1-C 60 At least one substituent from the heteroaryl thio group, the substituted monovalent nonaromatic fused polycyclic group, and the substituted monovalent nonaromatic fused heterocyclic group may be selected from:

[0138] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkoxy;

[0139] Each is substituted by at least one of the following C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );

[0140] C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups;

[0141] Each is substituted by at least one of the following C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );as well as

[0142] -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

[0143] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl and terphenyl.

[0144] In one implementation, CY in Equations 2 and 3 21 CY 22 CY 31 and CY 32Each of these can be independently selected from phenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenatenyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, tetraphenyl, lavany, perylene, penfenyl, indoxaneyl, dibenzofuranyl, dibenzothiopheneyl, carbazoleyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidine The following groups are listed: yl, pyridazinyl, indazoleyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, cyclolinyl, phenanthridineyl, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisothiazolyl, benzisothiazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, azirmonyl, and azircarbazoyl.

[0145] In one implementation, CY in Equation 2 21 and CY 22 Each can be independently selected from phenyl, naphthyl, fluorenyl, carbazolyl, pyridyl, phenanthrolinel, azafluorenyl, and azacarbazolyl.

[0146] In one implementation, CY in Equation 3 31 and CY 32 Each can be independently selected from phenyl, naphthyl, fluorenyl, phenanthryl, carbazole, dibenzofuranyl, dibenzothiopheneyl, and dibenzothiopheneyl.

[0147] In one implementation, L in Equations 2 to 4 21 To L 23 L 31 To L 33 and L 41 To L 46Each of these can be independently selected from phenylene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluorenylane, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiophene, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiophene, pyridinyl, imidazolyl, and pyridazole. , ...

[0148] Each of the following substituted compounds is selected from at least one of the following: phenylene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthylene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiophene, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiophene, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, etc. Oxazolyl, isoxazolyl, thiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, quinoxalinyl, quinoxalinyl, phenanthrinyl, acridineyl, phenanthrolineyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisisoxazolyl, benzisisoxazolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl and zazacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyridyl Azolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cenolinyl, phenanthridine, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisoxazolyl, benzisisothiazolyl, triazolyl, tetrazolyl, imidazopyridyl, 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 ),and

[0149] Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, C1-C 10 Alkyl-substituted phenyl, biphenyl, terphenyl, and naphthyl groups.

[0150] In one implementation, in equations 2 to 4, Ar 21 To Ar 23 Ar 31 To Ar 33 and Ar 41 To Ar 43 Each can be independently represented by a group selected from formulas 5-1 to 5-26 and 6-1 to 6-55, and

[0151] Selected from Ar 21 To Ar 23 At least one of them may be a group represented by one selected from Formulas 6-1 to 6-55:

[0152]

[0153]

[0154]

[0155] In equations 5-1 to 5-26 and equations 6-1 to 6-55,

[0156] Y 31 and Y 32 Each can be independently selected from O, S, C(Z) 33 (Z) 34 ), N(Z 33 ) or Si(Z 33 (Z) 34 ),

[0157] Z 31 To Z 34 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 alkenyl, C1-C 20 alkynyl group, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, phenanthryl, anthraceneyl, triphenylene, pyridyl, pyrimidinyl, carbazoleyl, and triazineyl.

[0158] e2 is 1 or 2.

[0159] e3 can be an integer selected from 1 to 3.

[0160] e4 can be an integer selected from 1 to 4.

[0161] e5 can be an integer selected from 1 to 5.

[0162] e6 can be an integer selected from 1 to 6.

[0163] e7 can be an integer selected from 1 to 7.

[0164] e9 can be an integer selected from 1 to 9, and

[0165] * Indicates the binding site with adjacent atoms.

[0166] In one implementation, in equations 2 to 4, R 21 To R 25 R 31 R 32 and R 41 To R 43 Each can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], pyrene, phenerenoyl, anthracene, fluoranyl, triphenylene, pyrrolyl, thiophene, furanyl, thiophene, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoyindolyl, indoleyl, purine, quinolinyl, isoquinolinyl, benzo[quinolinyl], phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl phenanthroline, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophene, benzothiopyrrolyl, benzoisothiazolyl, benzooxazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, dibenzothiopyrrolyl, carbazole, benzocarbazole, dibenzocarbazole, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, oxazolopyridyl, thiazopyridyl, benzonaphthidyl, azafluorenyl, azaspiro-difluorenyl, azacarbazole, azadibenzofuranyl, azadibenzothiophene, azadibenzothiopyrrolyl, biphenyl and terphenyl; and

[0167] Each of the following substituted groups is selected from at least one of the following: cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], pyrene, finadeninyl, phenanthryl, anthraceneyl, fluoranyl, triphenylene, pyrrolyl, thiopheneyl, furanyl, thiopheneyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoyindolyl, indoleyl, purinel, quinolinyl, isoquinolinyl, benzo[quinolinyl], phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl, phenanthroxolinyl, phenazinyl, benzimidyl Azolyl, benzofuranyl, benzothiophenyl, benzothiopyrrolyl, benzoisothiazolyl, benzooxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, dibenzothiopyrrolyl, carbazoleyl, benzocarbazoleyl, dibenzocarbazoleyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, oxazolopyridyl, thiazopyridyl, benzonaphthidyl, azafluorenyl, azaspiro-difluorenyl, azacarbazoleyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiopyrrolyl, biphenyl and terphenyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], pyrene, phenatenyl, anthracene, fluoranyl, triphenylene, pyrrolyl, thiophene, furanyl, thiophene, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoyindolyl, indazoleyl, purine, quinolinyl, isoquinolinyl, benzo[quinolinyl], phthalazinyl, naphthidyl, quinoxalinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl , phenanthroline, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophene, benzothiopyrrolyl, benziisothiazolyl, benzooxazolyl, benziisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, dibenzothiopyrrolyl, carbazolyl, benzocarbazolyl, dibenzocarbazolyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, oxidazopyridyl, thiazopyridyl, benzonaphthidyl, azafluorenyl, azaspiro-difluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophene, azadibenzothiopyrrolyl, biphenyl and terphenyl.

[0168] In one embodiment, the second compound may be selected from compounds 2-1 to 2-23:

[0169]

[0170] In one embodiment, the third compound may be selected from formulas 3-1 to 3-16:

[0171] In one embodiment, the fourth compound may be selected from formulas 4-1 to 4-31:

[0172]

[0173]

[0174] In one embodiment, the second auxiliary layer may include at least one compound selected from compounds 2-1 to 2-23.

[0175] In one embodiment, the second auxiliary layer may be formed or composed of at least one compound selected from compounds 2-1 to 2-23.

[0176] In one embodiment, the second auxiliary layer may include at least one compound selected from compounds 2-1 to 2-23 and at least one compound selected from compounds 3-1 to 3-16.

[0177] In one embodiment, the second auxiliary layer may be formed or composed of at least one compound selected from compounds 2-1 to 2-23 and at least one compound selected from compounds 3-1 to 3-16.

[0178] In one embodiment, the second auxiliary layer may include at least one compound selected from compounds 3-1 to 3-16 and at least one compound selected from compounds 4-1 to 4-31.

[0179] In one embodiment, the second auxiliary layer may be formed or composed of at least one compound selected from compounds 3-1 to 3-16 and at least one compound selected from compounds 4-1 to 4-31.

[0180] When the second auxiliary layer comprises the second, third, and / or fourth compounds as described above, the concentration of triplet excitons participating in light emission can be appropriately maintained (e.g., a high concentration of triplet excitons can be maintained) by preventing or reducing the movement or diffusion of triplet excitons from the emission layer 151 to the first auxiliary layer 171 and the second auxiliary layer 172. Furthermore, the second auxiliary layer 172 can prevent or reduce hole injection from the hole transport region.

[0181] In one embodiment, the first auxiliary layer 171 may be in direct contact with the second auxiliary layer 172. In one or more embodiments, the first auxiliary layer 171 may be in direct contact with each of the emitting layer 151 and the second auxiliary layer 172. For example, the first auxiliary layer 171 may be present at the interface between the emitting layer 151 and the second auxiliary layer 172.

[0182] In one embodiment, the first auxiliary layer 171 and the second auxiliary layer 172 may each independently have approximately to approximately The thickness of the first auxiliary layer 171 and the second auxiliary layer 172 is within these ranges. When the thicknesses of the first auxiliary layer 171 and the second auxiliary layer 172 are within these ranges, the organic light-emitting device can achieve improved lifetime without a significant increase in driving voltage.

[0183] The emitter layer 151 may be formed or composed of a single compound, or may include two or more compounds.

[0184] In one embodiment, the emitting layer 151 may include a host and a dopant, and the dopant may include a phosphorescent dopant or a fluorescent dopant.

[0185] In one embodiment, the emitting layer 151 can emit green light with a maximum emission wavelength of about 490 nm to about 580 nm.

[0186] In one embodiment, the emitting layer 151 may emit blue light having a maximum emission wavelength of about 410 nm to about 490 nm.

[0187] In one embodiment, the electron transport layer 173 may include a metal-containing material and a fifth compound, the fifth compound being a metal-free compound comprising at least one ring of nitrogen containing π electrons depleted.

[0188] The second, third, and / or fourth compounds included in the second auxiliary layer 172 may be the same as or different from the fifth compound included in the electron transport layer 173. The electron transport layer 173 can be further understood with reference to the description provided below.

[0189] In one embodiment, when the emitter layer 151 comprises a host and a dopant, the host may comprise or be an anthracene compound.

[0190] The following text will refer to Figure 1 and Figure 2 The structure and manufacturing method of organic light-emitting devices 10 and 20 according to one or more embodiments are described.

[0191] [First Electrode 110]

[0192] exist Figure 1 and Figure 2 In this process, the substrate may be additionally disposed below the first electrode 110 or above the second electrode 190. The substrate may be a glass substrate and / or a plastic substrate, each possessing excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and / or water resistance.

[0193] The first electrode 110 can be formed by depositing and / or sputtering the material to be formed on a substrate. When the first electrode 110 is an anode, the material to be formed of the first electrode 110 can be selected from a material with a high work function to facilitate hole injection.

[0194] The first electrode 110 may be a reflective electrode, a semi-reflective electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material to form the first electrode 110 may be selected from indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), and combinations thereof, but the embodiments of this disclosure are not limited thereto. In one or more embodiments, when the first electrode 110 is a semi-reflective electrode or a reflective electrode, the material 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 combinations thereof, but the embodiments of this disclosure are not limited thereto.

[0195] The first electrode 110 may have a single-layer structure or a multi-layer structure comprising 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 to this.

[0196] [Organic layer 150]

[0197] An organic layer 150 is disposed on the first electrode 110. The organic layer 150 may include an emission layer 151 and an electron transport region 170 disposed between the emission layer 151 and the second electrode 190.

[0198] In some embodiments, the organic layer 150 may further include a hole transport region 130 between the first electrode 110 and the emitter layer 151.

[0199] [Hole transport region 130 in organic layer 150]

[0200] The hole transport region may have: i) a single-layer structure comprising a single layer (including a single material), ii) a single-layer structure comprising a single layer (including multiple different materials), or iii) a multi-layer structure having multiple layers (including multiple different materials).

[0201] The hole transport region may include at least one layer selected from the hole injection layer, hole transport layer, emission assist layer and electron blocking layer.

[0202] In some embodiments, for example, the hole transport region may have a single-layer structure comprising a single layer (comprising a variety of different materials), or a multi-layer structure comprising a hole injection layer / hole transport layer, a hole injection layer / hole transport layer / emission assist layer, a hole injection layer / emission assist layer, a hole transport layer / emission assist layer, or a hole injection layer / hole transport layer / electron blocking layer, wherein the constituent layers of each structure are stacked sequentially from the first electrode 110 in the order described herein, but the structure of the hole transport region is not limited thereto.

[0203] In one embodiment, the hole transport region may include at least one selected from the following: m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiro-TPD, spiro-NPB, methylated NPB, TAPC, HMTPD, 4,4',4”-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), compounds represented by formula 201, and compounds represented by formula 202:

[0204]

[0205] Formula 201

[0206]

[0207] Formula 202

[0208]

[0209] In equations 201 and 202,

[0210] L 201 To L 204 Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0211] L 205 Optional from *-O-*', *-S-*', *-N(Q) 201 )-*', substituted or unsubstituted C1-C 20 Alkylene, substituted or unsubstituted C2-C 20 alkenyl, substituted or unsubstituted C3-C 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0212] xa1 to xa4 can each be an integer selected from 0 to 3 independently.

[0213] xa5 can be an integer selected from 1 to 10, and

[0214] R 201 To R 204 and Q 201 Each can be independently selected from substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups.

[0215] For example, in equation 202, R 201 and R 202 They can be optionally linked to each other via single bonds, dimethyl-methylene, or diphenyl-methylene bonds, and R 203 and R 204 They can be optionally linked together by single bonds, dimethyl-methylene, or diphenyl-methylene bonds.

[0216] In one implementation, in equations 201 and 202,

[0217] L 201 To L 205 Each can be selected independently:

[0218] Phenylidene, pentylene, indene, naphthyl, azulene, heptadene, acenaphthene, fluorenene, spiro-difluorenene, benzo[a]fluorenene, dibenzo[a]fluorenene, phenanthroline, anthracene, fluorenyl, triphenylene, pyrene, 1,2-benzophenanthrene, tetraphenylene, fenenyl, perylene, perylene Pentofenyl, hexaphenylene, pentaphenylene, rubidylene, myristyl, oleophylene, thiophenyl, furanyl, carbazoyl, indoleyl, isoydinolyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazoyl, dibenzothiophenyl, and pyridylene; and

[0219] Each of the following substituted compounds is selected from at least one of the following: phenylene, pentyleneylene, indene, naphthylene, azulene, heptadeneylene, acenaphthene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenenenyl, phenanthrene, anthracene, fluorenyl, triphenylene, pyrene, 1,2-benzophenanthrene, tetraphenylene, fentanyl, perylene, pentyleneyl, hexaphenylene. Benzenepentylene, Benzenerubinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinylene, Benzenemylinolylene and pyridylene: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, C1-C 10 Alkyl-substituted phenyl, -F-substituted phenyl, pentanenyl, indole, naphthyl, azuleyl, heptenyl, indole-based, acenaphthel, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthrenyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthreneyl, tetraphenyl, styrayl, peryl, pentanfenyl, hexaphenyl, pentaphenyl, rutinyl, keratyl, ovoleyl, thiopheneyl, furanyl, carbazoyl, indoleyl, isoydinolyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoyl, dibenzocarbazoyl, dibenzothiopheneyl, pyridyl, -Si(Q) 31 (Q) 32 (Q) 33 ) and -N(Q 31 (Q) 32 ),and

[0220] Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl.

[0221] In one or more embodiments, xa1 to xa4 may each be 0, 1 or 2 independently.

[0222] In one or more embodiments, xa5 can be 1, 2, 3 or 4.

[0223] In one or more embodiments, R 201 To R 204 and Q 201 Each of these can be independently selected from: phenyl, biphenyl, terphenyl, pentanenyl, indole, naphthyl, azuleyl, heptenyl, indole-glycol, acenaphthel, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthreneyl, phenanthreneyl, anthraceneyl, fluoranyl, triphenylene, pyreneyl, 1,2-benzophenanthreneyl, tetraphenyl, styryl, peryl, pentanyl, hexaphenyl, pentaphenyl, rubiginyl, myristyl, ovoleyl, thiopheneyl, furanyl, carbazoleyl, indoleyl, isoyindolyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiopheneyl, and pyridyl; and

[0224] Each of the following substituted phenyl, biphenyl, terphenyl, pentanenyl, indole, naphthyl, azuleyl, heptenyl, indoleyl, acenaphthel, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthreneyl, phenanthreneyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthreneyl, tetraphenyl, framyl, peryleneyl, pentanfenyl, hexaphenyl Pentaphenyl, rutinyl, keratyl, ovolenyl, thiophene, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, and pyridyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, C1-C 10 Alkyl-substituted phenyl, -F-substituted phenyl, pentanenyl, indole, naphthyl, azuleyl, heptenyl, indole-based, acenaphthel, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthrenyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthreneyl, tetraphenyl, styrayl, peryl, pentanfenyl, hexaphenyl, pentaphenyl, rutinyl, keratyl, ovoleyl, thiopheneyl, furanyl, carbazoyl, indoleyl, isoydinolyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoyl, dibenzocarbazoyl, dibenzothiopheneyl, pyridyl, -Si(Q) 31 (Q) 32 (Q) 33 ) and -N(Q 31 (Q) 32 ),and

[0225] Q 31 To Q 33 Each can be independently identical to the one described above.

[0226] In one or more embodiments, R in formula 201 201 To R 203 At least one of them can be independently selected from:

[0227] Fluorenyl, spiro-difluorenyl, carbazole, dibenzofuranyl, and dibenzothiopheneyl; and

[0228] Each of the following substituted fluorenyl, spiro-difluorenyl, carbazole, dibenzofuranyl, and dibenzothiopheneyl groups is selected from at least one of the following: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, C1-C 10 Alkyl-substituted phenyl, -F-substituted phenyl, naphthyl, fluorenyl, spiro-difluorenyl, carbazole, dibenzofuranyl, and dibenzothiopheneyl.

[0229] However, the embodiments disclosed herein are not limited thereto.

[0230] In one or more embodiments, in formula 202, i)R 201 and R 202 They can be connected to each other via single bonds, and / or ii)R 203 and R 204 They can be connected to each other via a single key.

[0231] In one or more embodiments, R selected from formula 202 201 To R 204 At least one of them can be selected from:

[0232] Carbazolyl; and

[0233] The carbazoyl group is substituted with at least one of the following: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, C1-C 10 Alkyl-substituted phenyl, -F-substituted phenyl, naphthyl, fluorenyl, spiro-difluorenyl, carbazole, dibenzofuranyl, and dibenzothiopheneyl.

[0234] However, the embodiments disclosed herein are not limited thereto.

[0235] The compound represented by formula 201 can be represented by formula 201-1:

[0236] Formula 201-1

[0237]

[0238] In one embodiment, the compound represented by formula 201 may be represented by formula 201-2, but the embodiments of this disclosure are not limited thereto:

[0239] Formula 201-2

[0240]

[0241] In one or more embodiments, the compound represented by formula 201 may be represented by formula 201-2(1), but the embodiments of this disclosure are not limited thereto:

[0242] Equation 201-2(1)

[0243]

[0244] The compound represented by formula 201 can be represented by formula 201A:

[0245] Formula 201A

[0246]

[0247] In one embodiment, the compound represented by formula 201 may be represented by formula 201A(1), but the embodiments of this disclosure are not limited thereto:

[0248] Formula 201A(1)

[0249]

[0250] In one or more embodiments, the compound represented by formula 201 may be represented by formula 201A-1, but the embodiments of this disclosure are not limited thereto:

[0251] Formula 201A-1

[0252]

[0253] In one embodiment, the compound represented by formula 202 can be represented by formula 202-1:

[0254] Formula 202-1

[0255]

[0256] In one or more embodiments, the compound represented by formula 202 may be represented by formula 202-1(1):

[0257] Equation 202-1(1)

[0258]

[0259] In one or more embodiments, the compound represented by formula 202 may be represented by formula 202A:

[0260] Formula 202A

[0261]

[0262] In one or more embodiments, the compound represented by formula 202 may be represented by formula 202A-1:

[0263] Formula 202A-1

[0264]

[0265] In equations 201-1, 201-2, 201-2(1), 201A, 201A(1), 201A-1, 202-1, 202-1(1), 202A, and 202A-1,

[0266] L 201 To L 203 xa1 to xa3, xa5 and R 202 To R 204 Each can be independently identical to the one described above.

[0267] L 205 The choice can be made from phenylene and fluorene groups.

[0268] X 211 Selectable from O, S, and N(R) 211 ),

[0269] X 212 Selectable from O, S, and N(R) 212 ),

[0270] R 211 and R 212 Each can independently combine with R 203 The descriptions are the same, and

[0271] R 213 To R 217 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, C1-C 10 Alkyl-substituted phenyl, -F-substituted phenyl, pentanenyl, indyl, naphthyl, azuleyl, heptenyl, indole-based, acenaphtheyl, fluorenyl, spiro-difluorenyl, benzo[fluorenyl], dibenzo[fluorenyl], phenatenyl, phenanthreneyl, anthraceneyl, fluoranyl, triphenylene, pyreneyl, 1,2-benzophenanthreneyl, tetraphenyl, furanyl, peryl, pentanyl, hexaphenyl, pentaphenyl, rubidyl, kosyl, ovoidyl, thiopheneyl, furanyl, carbazoyl, indoleyl, isoindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[carbazoyl], dibenzo[carbazoyl], dibenzothiopheneyl, and pyridyl.

[0272] The hole transport region may include at least one compound selected from compounds HT1 to HT48, but embodiments of this disclosure are not limited thereto:

[0273]

[0274]

[0275]

[0276] The thickness of the hole transport region can be approximately to approximately For example, about to approximately When the hole transport region includes at least one selected from the hole injection layer and the hole transport layer, the thickness of the hole injection layer can be approximately [missing information]. to approximately And for example, about to approximately Furthermore, the thickness of the hole transport layer can be approximately to approximately And for example, about to approximately When the thicknesses of the hole transport region, hole injection layer, and hole transport layer are within these ranges, satisfactory hole transport characteristics can be obtained without a significant increase in driving voltage.

[0277] The emission assist layer can improve light emission efficiency by compensating for the optical resonant distance according to the wavelength of the light emitted by the emission layer, and the electron blocking layer can block or reduce the flow of electrons from the electron transport region. The emission assist layer and the electron blocking layer can comprise the materials described above.

[0278] [p-dopant]

[0279] In addition to these materials, the hole transport region may further include charge-generating materials for improving conductivity. The charge-generating materials may be uniformly or non-uniformly dispersed in the hole transport region.

[0280] The charge-generating material can be, for example, a p-doped agent.

[0281] In one implementation, the p-dopant may have a lowest unoccupied molecular orbital (LUMO) energy level of -3.5 eV or less.

[0282] p-dopers may include at least one selected from quinone derivatives, metal oxides, and cyano-containing compounds, but the embodiments disclosed herein are not limited thereto.

[0283] In one embodiment, the p-doper may include at least one selected from the following:

[0284] Quinone derivatives, such as tetracyanoquinone dimethyl (TCNQ) or 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinone dimethyl (F4-TCNQ);

[0285] Metal oxides, such as tungsten oxide or molybdenum oxide;

[0286] 1,4,5,8,9,12-hexaazatriphenylene-hexanitrile (HAT-CN); and

[0287] The compound represented by formula 221,

[0288] However, the embodiments disclosed herein are not limited thereto:

[0289]

[0290] Equation 221

[0291]

[0292] In Equation 221,

[0293] R 221 To R 223 Each can be independently selected from substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, wherein the group is selected from R 221 To R 223 At least one of them may have at least one substituent selected from the following: cyano, -F, -Cl, -Br, -I, C1-C substituted with -F. 20 Alkyl groups, C1-C substituted with -Cl 20 Alkyl groups, C1-C substituted with -Br 20 Alkyl groups and -I-substituted C1-C 20 alkyl.

[0294] [Emitting layer 151 in organic layer 150]

[0295] When the organic light-emitting device 10 or 20 is a full-color organic light-emitting device, the emitting layer 151 can be patterned as a red emitting layer, a green emitting layer, or a blue emitting layer, depending on the sub-pixel. In one or more embodiments, the emitting layer 151 may have a stacked structure of two or more layers selected from red, green, and blue emitting layers, wherein the two or more layers may be in contact with each other or may be separated from each other. In one or more embodiments, the emitting layer 151 may include two or more materials selected from red, green, and blue emitting materials, wherein the two or more materials are mixed with each other in a single layer to emit white light.

[0296] The emitting layer 151 may include a host and a dopant. The dopant may include at least one selected from phosphorescent dopant, fluorescent dopant, and delayed fluorescence dopant.

[0297] In the emitter layer 151, based on 100 parts by weight of the main body, the amount of dopant can be from about 0.01 parts by weight to about 15 parts by weight, but the embodiments of this disclosure are not limited thereto.

[0298] The thickness of the emission layer 151 can be approximately to approximately For example, about to approximately When the thickness of the emitting layer 151 is within this range, excellent light emission characteristics can be obtained without a significant increase in driving voltage.

[0299] [The main body in emission layer 151]

[0300] In one or more embodiments, the body may include a compound represented by formula 301:

[0301] Formula 301

[0302] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 .

[0303] In Equation 301,

[0304] Ar 301 C5-C can be substituted or unsubstituted. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 The heterocyclic group, xb11, can be 1, 2, or 3.

[0305] L 301 Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups;

[0306] xb1 can be an integer selected from 0 to 5.

[0307] R 301 The group can be selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) and -P(=O)(Q 301 (Q) 302 ),

[0308] xb21 can be an integer selected from 1 to 5, and

[0309] Q 301 To Q 303 Each can be independently selected from C1-C 10Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl, but the embodiments disclosed herein are not limited thereto.

[0310] In one implementation, Ar in formula 301 301 Optional from:

[0311] Naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenatenyl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, tetraphenyl, lavany, perylene, penfenyl, indoxanthryl, dibenzofuranyl, and dibenzothiopheneyl; and

[0312] Each of the following substituted groups is selected from at least one of the following: naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthrene, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthrene, tetraphenyl, styrene, peryl, penfenyl, indoxanthryl, dibenzofuranyl, and dibenzothiopheneyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-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 ),and

[0313] Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl, but the embodiments disclosed herein are not limited thereto.

[0314] When xb11 in equation 301 is 2 or greater, two or more Ar 301 It can be connected via a single button.

[0315] In one or more embodiments, the compound represented by formula 301 may be represented by formula 301-1 or formula 301-2:

[0316] Formula 301-1

[0317]

[0318] Formula 301-2

[0319]

[0320] In equations 301-1 to 301-2,

[0321] Ring A 301 To Ring A 304 Each ring can be independently selected from benzene ring, naphthyl ring, phenanthrene ring, fluoranthene ring, benzo[9,10]phenanthrene ring, pyrene ring, cyclopentadiene ring, pyridine ring, pyrimidine ring, indene ring, fluorene ring, spiro-difluorene ring, benzo[9,10]fluorene ring, dibenzo[9,10]fluorene ring, indole ring, carbazole ring, benzo[9,10]carbazole ring, dibenzo[9,10]carbazole ring, furan ring, benzo[9,10]furan ring, dibenzo[9,10]furan ring, naphthol[9,10]furan ring, naphthol[9,10]furan ring, benzo[9,10]naphthol[9,10]furan ring, indole ring, carbazole ring, dibenzo[9,10]carbazole ring, furan ring, benzo[9,10]furan ring, dibenzo[9,10]furan ring, naphthol[9,10]furan ring, spiro[9,10]naphthol[9,10]furan ring, benzo ...

[0322] X 301 Can be O, S or N-[(L 304 ) xb4 -R 304 ],

[0323] R 311 To R 314 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-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 ),

[0324] xb22 and xb23 can each be 0, 1, or 2 independently.

[0325] L 301 xb1, R 301 and Q 31 To Q 33 Each can be independently identical to the one described above.

[0326] L 302 To L304 Each can be independently combined with L 301 The descriptions are the same.

[0327] xb2 to xb4 can each be independently identical to the one described in combination with xb1, and

[0328] R 302 To R 304 Each can independently combine with R 301 The descriptions are the same.

[0329] For example, in Equations 301, 301-1, and 301-2, L 301 To L 304 Each can be selected independently:

[0330] Phenylidene, naphthylene, fluorenelene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthracene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiopheneyl, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiopheneyl, pyridyl, imidazolyl, pyrazolyl, thiopheneyl Azolyl, isothiazolyl, isoxazolyl, isoxazolyl, isothiazolyl, isothiazolyl, isoxadi ...

[0331] Each of the following substituted compounds is selected from at least one of the following: phenylene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthylene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiophene, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiophene, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, etc. Oxazolyl, isoxazolyl, thiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, quinoxalinyl, quinoxalinyl, phenanthrinyl, acridineyl, phenanthrolineyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisisoxazolyl, benzisisoxazolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl and zazacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyridyl Azolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cenolinyl, phenanthridine, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisoxazolyl, benzisisothiazolyl, triazolyl, tetrazolyl, imidazopyridyl, 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 ),and

[0332] Q31 To Q 33 Each can be independently identical to the one described above.

[0333] In one embodiment, R in formulas 301, 301-1, and 301-2 301 To R 304 Each can be selected independently:

[0334] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiopheneyl, pyridyl, imidazolyl, pyrazole , thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisothiazolyl, benzisothiazolyl, benzisothiazolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl and azacarbazolyl; and

[0335] Each of the following substituted phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentofenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazoleyl, dibenzo[a]carbazoleyl, dibenzothiopheneyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl Oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, phenanthridine, acridineyl, phenanthrolinel, phenazinyl, benzimidazolyl, benzisothiazolyl, benzoxazolyl, benzisothiazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl and azacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyridyl Azolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cenolinyl, phenanthridine, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisoxazolyl, benzisisothiazolyl, triazolyl, tetrazolyl, imidazopyridyl, 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 ),and

[0336] Q 31 To Q 33 Each can be independently identical to the one described above.

[0337] In one or more embodiments, the host may include an alkaline earth metal complex. For example, the host may be selected from Be complexes (e.g., compound H55) and Mg complexes. In some embodiments, the host may be a Zn complex.

[0338] The main body may include at least one selected from 9,10-bis(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN), 9,10-bis-(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP), 1,3-bis-9-carbazolylbenzene (mCP), 1,3,5-tris(carbazolyl-9-yl)benzene (TCP) and compounds H1 to H55, but the embodiments of this disclosure are not limited thereto:

[0339]

[0340]

[0341]

[0342] [Phosphorescent dopant in emitter layer 151]

[0343] Phosphorescent dopants may include organometallic complexes represented by formula 401:

[0344] Formula 401

[0345] M(L 401 ) xc1 (L 402 ) xc2 .

[0346] In Equation 401,

[0347] M can 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).

[0348] L 401 The ligand can be represented by the free formula 402, and xc1 can be 1, 2, or 3, wherein when xc1 is 2 or greater, two or more L... 401 They can be the same or different from each other.

[0349] L 402 It can be an organic ligand, and xc2 can be an integer selected from 0 to 4, wherein when xc2 is 2 or greater, two or more L 402 They can be the same or different from each other.

[0350] Formula 402

[0351]

[0352] In Equation 402, X 401 To X 404 They can be nitrogen or carbon independently.

[0353] X 401 and X 403 It can be connected via a single or double key, and X 402 and X 404 It can be connected via a single key or a double key.

[0354] A 401 and A 402 Each can be independently classified as C5-C 60 Carbocyclic groups or C1-C 60 Heterocyclic groups,

[0355] X 405It can be a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q) 411 )-*'、*-C(Q 411 (Q) 412 )-*'、*-C(Q 411 )=C(Q 412 )-*'、*-C(Q 411 )=*' or *=C(Q 411 )-*', where Q 411 and Q 412 Each can be independently hydrogen, deuterium, or C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, or naphthyl,

[0356] X 406 It can be a single bond, O, or S.

[0357] R 401 and R 402 Each can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 20 Alkyl, substituted or unsubstituted C1-C 20 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 401 (Q) 402 (Q) 403 -N(Q) 401 (Q) 402 -B(Q) 401 (Q) 402 -C(=O)(Q) 401 -S(=O)2(Q) 401 ) and -P(=O)(Q 401 (Q) 402 ), where Q 401 To Q 403 Each can be independently selected from C1-C10 Alkyl, C1-C 10 Alkoxy, C6-C 20 Aryl and C1-C 20 Mixed aromatics,

[0358] xc11 and xc12 can each be an integer selected from 0 to 10 independently, and

[0359] In Equation 402, * and *' each indicate the binding site with M in Equation 401.

[0360] In one implementation, A in formula 402 401 and A 402 Each of the following can be independently selected from phenyl, naphthyl, fluorenyl, spiro-difluorenyl, indyl, pyrrolyl, thiophene, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxolinyl, quinazolinyl, carbazole, benzimidazolyl, benzofuranyl, benzothiophene, benzoisothiophene, benzooxazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, and dibenzothiophene.

[0361] In one or more embodiments, in formula 402, i)X 401 It can be nitrogen, and X 402 It can be carbon, or ii)X 401 and X 402 Each can be nitrogen simultaneously (e.g., at the same time).

[0362] In one or more embodiments, R in formula 402 401 and R 402 Each can be selected independently:

[0363] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl and C1-C 20 Alkoxy;

[0364] Each is substituted by at least one of the following C1-C 20 Alkyl and C1-C 20 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, phenyl, naphthyl, cyclopentyl, cyclohexyl, adamantyl, norbornyl, and norbornyl;

[0365] Cyclopentyl, cyclohexyl, adamantyl, norbornyl, norbornyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazoleyl, dibenzofuranyl, and dibenzothiophenyl;

[0366] Each of the following substituted groups is selected from at least one of the following: cyclopentyl, cyclohexyl, adamantyl, norbornel, norbornel-enyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazoleyl, dibenzofuranyl, and dibenzothiopheneyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, adamantyl, norbornel, norbornel-alkenyl, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazoleyl, dibenzofuranyl, and dibenzothiopheneyl; and -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 ),and

[0367] Q 401 To Q 403 Each can be independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, and naphthyl groups are used, but the embodiments disclosed herein are not limited thereto.

[0368] In one or more embodiments, when xc1 in equation 401 is 2 or greater, two or more L 401 The two A's in 401 Optionally via linking group X 407 Connection, or two or more L 401 The two A's in 402 Optionally via linking group X 408 Linkages (see compounds PD1 through PD4 and PD7). X 407 and X 408Each can be independently a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q)-*', or *-N(Q)-*'. 413 )-*'、*-C(Q 413 (Q) 414 )-*' or *-C(Q 413 )=C(Q 414 )-*'(where Q 413 and Q 414 Each can be independently hydrogen, deuterium, or C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl or naphthyl), but not limited to these.

[0369] L in Equation 401 402 It can be a monovalent, divalent, or trivalent organic ligand. For example, L... 402 The ligands can be selected from halogens, diketones (e.g., acetylacetonates), carboxylic acids (e.g., pyridine carboxylate), -C (=O), isonitriles, -CN, and phosphorus-containing ligands (e.g., phosphine or phosphites), but the embodiments disclosed herein are not limited thereto.

[0370] In one or more embodiments, the phosphorescent dopant may be selected from, for example, compounds PD1 to PD25, but embodiments of this disclosure are not limited thereto:

[0371]

[0372]

[0373] [Fluorescent dopant in emitter layer 151]

[0374] Fluorescent dopants can emit fluorescence or delay fluorescence.

[0375] Fluorescent dopants may include aromatic amine compounds or styrene amine compounds.

[0376] Fluorescent dopants may include compounds represented by formula 501:

[0377] Formula 501

[0378]

[0379] In Equation 501,

[0380] Ar 501 C5-C can be substituted or unsubstituted. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups,

[0381] L 501 To L 503Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0382] xd1 to xd3 can each be an integer selected from 0 to 3 independently.

[0383] R 501 and R 502 Each can be independently selected from substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, and

[0384] xd4 can be an integer selected from 1 to 6.

[0385] In one implementation, Ar in Formula 501 501 Optional from:

[0386] Naphthyl, heptadeninyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthyl, anthraceneyl, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, tetraphenyl, lavany, perylene, penfenyl, indoxanthryl, and indoxanthryl; and

[0387] Each of the following substituted groups is selected from at least one of the following: naphthyl, heptalenyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthyl, anthraceneyl, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, tetraphenyl, styrene, peryl, penfenyl, ind[a]anthryl, and ind[a]phenanthryl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C20 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl.

[0388] In one or more embodiments, L in Formula 501 501 To L 503 Each can be selected independently:

[0389] Phenylidene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthracene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiopheneyl, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiopheneyl, and pyridylene; and

[0390] Each of the following substituted groups is selected from at least one of the following: phenylene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthracene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiopheneyl, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiopheneyl, and pyridylene: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, fluoranthraceneyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentofenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indolyl, isoindolyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiopheneyl, and pyridyl.

[0391] In one or more embodiments, R in formula 501 501 and R 502 Each can be selected independently:

[0392] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiophenyl, and pyridyl; and

[0393] Each of the following substituted groups is selected from at least one of the following: phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothienyl, dibenzofuranyl, dibenzothienyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiophenyl, and pyridyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, and -Si(Q) 31 (Q) 32 (Q) 33 ),and

[0394] Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl.

[0395] In one or more embodiments, xd4 in formula 501 may be 2, but the embodiments of this disclosure are not limited thereto.

[0396] For example, fluorescent dopants can be selected from compounds FD1 to FD22:

[0397]

[0398]

[0399]

[0400] In one or more embodiments, the fluorescent dopant may be selected from the following compounds, but the embodiments disclosed herein are not limited thereto:

[0401]

[0402] [Electron transport region 170 in the organic layer]

[0403] The electron transport region 170 may have: i) a single-layer structure comprising a single layer (including a single material), ii) a single-layer structure comprising a single layer (including multiple different materials), or iii) a multi-layer structure having multiple layers (including multiple different materials).

[0404] The electronic transmission region 170 may include a first auxiliary layer 171 and a second auxiliary layer 172.

[0405] The electron transport region 170 may further include at least one layer selected from the buffer layer, hole blocking layer, electron control layer, electron transport layer 173 and electron injection layer, but the embodiments of this disclosure are not limited thereto.

[0406] For example, the electron transport region 170 may have the following structures: a first auxiliary layer 171 / a second auxiliary layer 172 / electron transport layer 173 / electron injection layer; a first auxiliary layer 171 / a second auxiliary layer 172 / hole blocking layer / electron transport layer 173 / electron injection layer; a first auxiliary layer 171 / a second auxiliary layer 172 / electron control layer / electron transport layer 173 / electron injection layer; or a first auxiliary layer 171 / a second auxiliary layer 172 / buffer layer / electron transport layer 173 / electron injection layer, wherein the constituent layers of each structure are stacked sequentially from the emitter layer. However, the implementation of the structure of the electron transport region 170 is not limited to this.

[0407] The electron transport region 170 (e.g., a buffer layer, hole blocking layer, electron control layer, or electron transport layer in the electron transport region 170) may include a metal-free compound containing at least one ring of nitrogen with depleted π electrons.

[0408] As used herein, “a ring containing nitrogen with depleted π electrons” refers to a C1-C ring having (including) at least one *-N=*' moiety as the cyclic part. 60 Heterocyclic groups.

[0409] For example, "a ring containing nitrogen with depleted π electrons" can be: i) a 5- to 7-membered heterocyclic group having (including) at least one *-N=*' moiety, ii) a heteropolycyclic group wherein two or more 5- to 7-membered heterocyclic groups each having at least one *-N=*' moiety are fused together, or iii) a heteropolycyclic group wherein at least one 5- to 7-membered heterocyclic group having at least one *-N=*' moiety is bonded to at least one C5-C60 Fusing of carbocyclic groups.

[0410] Non-limiting examples of nitrogen rings containing depleted π electrons include, but are not limited to, imidazole rings, pyrazole rings, thiazole rings, isothiazole rings, oxazole rings, isoxazole rings, pyridine rings, pyrazine rings, pyrimidine rings, pyridazine rings, indazole rings, purine rings, quinoline rings, isoquinoline rings, benzo[a]quinoline rings, phthalazine rings, naphthidine rings, quinoxaline rings, quinazoline rings, cyclophosphine rings, phenanthridine rings, acridine rings, phenanthrene-rhein rings, phenazine rings, benzimidazole rings, benziisothiazole rings, benziisoxazole rings, benziisoxazole rings, triazole rings, tetraazole rings, oxadiazole rings, triazine rings, thiadiazole rings, imidazo[a]pyridine rings, imidazo[a]pyrimidine rings, and azacarbazole rings.

[0411] For example, electron transport region 170 may include a compound represented by formula 601:

[0412] Formula 601

[0413] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 .

[0414] In Equation 601,

[0415] Ar 601 C5-C can be substituted or unsubstituted. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 The heterocyclic group, xe11, can be 1, 2, or 3.

[0416] L 601 C3-C can be self-substituted or unsubstituted. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0417] xe1 can be an integer selected from 0 to 5.

[0418] R 601 C3-C can be self-substituted or unsubstituted. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 601 (Q) 602 (Q) 603 -C(=O)(Q) 601 -S(=O)2(Q) 601 ) and -P(=O)(Q 601 (Q) 602 ),

[0419] Q 601 To Q 603 Each can be independently C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, or naphthyl, and

[0420] xe21 can be an integer selected from 1 to 5.

[0421] In one implementation, Ar 601 (The quantity is specified by xe11) and R 601 At least one of them (the number of which is specified by xe21) may include a ring containing nitrogen with depleted π electrons.

[0422] In one implementation, Ar in Formula 601 601 Optional from:

[0423] Phenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthrene, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthrene, tetraphenyl, lavany, perylene, penfenyl, indoxane, dibenzofuranyl, dibenzothiopheneyl, carbazole, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridyl Azinyl, indazole, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, cenolinyl, phenanthridine, acridineyl, phenanthrolinel, phenazinyl, benzimidazolyl, benzisothiazolyl, benzisothiazolyl, benzisothiazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, and azacarbazolyl; and

[0424] Each of the following substituted groups is selected from at least one of the following: phenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthrene, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthrene, tetraphenyl, lavany, perylene, penfenyl, indoxaneyl, dibenzofuranyl, dibenzothiopheneyl, carbazole, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indazole, purine. Quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl, phenanthrolinel, phenazinyl, benzimidazolyl, benzisothiazolyl, benzoxazolyl, benzisothiazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl and azacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-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 ),and

[0425] Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl.

[0426] When xe11 in equation 601 is 2 or greater, two or more Ar 601 It can be connected via a single button.

[0427] In one or more embodiments, Ar in Formula 601 601 It can be anthracene.

[0428] In one or more embodiments, the compound represented by formula 601 may be represented by formula 601-1:

[0429] Formula 601-1

[0430]

[0431] In Equation 601-1,

[0432] X 614 It can be N or C(R) 614 ), X 615 It can be N or C(R)615 ), and X 616 It can be N or C(R) 616 ), of which X 614 To X 616 At least one of them is N.

[0433] L 611 To L 613 Each can be independently combined with L 601 The descriptions are the same.

[0434] xe611 to xe613 can each be independently identical to the definition in xe1.

[0435] R 611 To R 613 Each can independently combine with R 601 The descriptions are the same, and

[0436] R 614 To R 616 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl.

[0437] In one embodiment, L in Formula 601 and Formula 601-1 601 and L 611 To L 613 Each can be selected independently:

[0438] Phenylidene, naphthylene, fluorenelene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthracene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiopheneyl, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiopheneyl, pyridyl, imidazolyl, pyrazolyl, thiopheneyl Azolyl, isothiazolyl, isoxazolyl, isoxazolyl, isothiazolyl, isothiazolyl, isoxadi ...

[0439] Each of the following substituted compounds is selected from at least one of the following: phenylene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthylene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiophene, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiophene, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, etc. Oxazolyl, isoxazolyl, thiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, quinoxalinyl, quinoxalinyl, phenanthrinyl, acridineyl, phenanthrolineyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisisoxazolyl, benzisisoxazolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl and zazacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazole Pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridineyl, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisothiazolyl, benzisothiazolyl, benzisothiazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, and azacarbazolyl.

[0440] However, the embodiments disclosed herein are not limited thereto.

[0441] In one or more embodiments, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 may each be 0, 1 or 2 independently.

[0442] In one or more embodiments, R in Formula 601 and Formula 601-1 601 and R 611 To R 613 Each can be selected independently:

[0443] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thiophene, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyridyl Azolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridineyl, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisothiazolyl, benzisothiazolyl, benzisothiazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl, and azacarbazolyl;

[0444] Each of the following substituted phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentofenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazoleyl, dibenzo[a]carbazoleyl, dibenzothiopheneyl, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl Oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, phenanthridine, acridineyl, phenanthrolinel, phenazinyl, benzimidazolyl, benzisothiazolyl, benzoxazolyl, benzisothiazolyl, triazolyl, tetrazolyl, imidazopyridinyl, imidazopyrimidinyl and azacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiopheneyl, pyridyl, imidazolyl, Pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridineyl, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisothiazolyl, benzoxoxazolyl, benzisothiazolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl, and azacarbazolyl; and

[0445] -S(=O)2(Q 601 ) and -P(=O)(Q 601 (Q) 602 ),and

[0446] Q 601 and Q 602 Each can be independently identical to the one described above.

[0447] The electron transport region 170 may include at least one compound selected from compounds ET1 to ET37, but embodiments of this disclosure are not limited thereto:

[0448]

[0449]

[0450]

[0451]

[0452] In one or more embodiments, the electron transport region 170 may include at least one compound selected from 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq3, BAlq, 3-(biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole (TAZ), and NTAZ.

[0453]

[0454] The thicknesses of the buffer layer, hole blocking layer, and electronic control layer can each be approximately [missing information]. to approximately For example, about to approximately When the thicknesses of the buffer layer, hole blocking layer, and electronic control layer are each within these ranges, the buffer layer, hole blocking layer, and electronic control layer can exhibit excellent hole blocking characteristics and / or electronic control characteristics without a significant increase in driving voltage.

[0455] The thickness of electron transport layer 173 can be approximately to approximately For example, about to approximately When the thickness of the electron transport layer 173 is within the above range, satisfactory electron transport characteristics can be obtained without a significant increase in the driving voltage.

[0456] In addition to the materials described above, the electron transport region 170 (e.g., the electron transport layer 173 in the electron transport region 170) may further include a metallic material.

[0457] The metal-containing material may include at least one selected from alkali metal complexes and alkaline earth metal complexes. Alkali metal complexes may include metal ions selected from lithium (Li) ions, sodium (Na) ions, potassium (K) ions, rubidium (Rb) ions, and cesium (Cs) ions, and alkaline earth metal complexes may include metal ions selected from beryllium (Be) ions, magnesium (Mg) ions, calcium (Ca) ions, strontium (Sr) ions, and barium (Ba) ions. The ligand coordinating with the metal ion of the alkali metal complex or alkaline earth metal complex may be selected from hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, and cyclopentadiene, but the embodiments disclosed herein are not limited thereto.

[0458] For example, metal-containing materials may include Li complexes. Li complexes may include, for example, the following compounds: ET-D1 (lithium 8-hydroxyquinoline, LiQ) and / or ET-D2:

[0459]

[0460] The electron transport region 170 may include an electron injection layer that facilitates the injection of electrons from the second electrode 190. The electron injection layer may be in direct contact with the second electrode 190.

[0461] The electron injection layer may have: i) a single-layer structure comprising a single layer (including a single material), ii) a single-layer structure comprising a single layer (including multiple different materials), or iii) a multilayer structure having multiple layers (including multiple different materials).

[0462] The electron injection layer may include or be formed from the following: alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof.

[0463] 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.

[0464] The alkaline earth metal may be selected from Mg, Ca, Sr, and Ba.

[0465] The rare earth metal may be selected from scandium (Sc), yttrium (Y), cerium (Ce), terbium (Tb), ytterbium (Yb), and gadolinium (Gd).

[0466] The alkali metal compounds, alkaline earth metal compounds, and rare earth metal compounds may be selected from oxides and halides (e.g., fluorides, chlorides, bromides, and / or iodides) of alkali metals, alkaline earth metals, and rare earth metals.

[0467] The alkali metal compounds may be selected from alkali metal oxides such as Li2O, Cs2O, and / or K2O, and alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI. In one embodiment, the alkali metal compounds may be selected from LiF, Li2O, NaF, LiI, NaI, CsI, and KI, but the embodiments of the present disclosure are not limited thereto.

[0468] The alkaline earth metal compounds may be selected from alkaline earth metal oxides such as BaO, SrO, CaO, Ba[[ID=1第十九]] 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 compounds may be selected from BaO, SrO, and CaO, but the embodiments of the present disclosure are not limited thereto.

[0469] The rare earth metal compounds may be selected from YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, and TbF3. In one embodiment, the rare earth metal compounds may be selected from YbF3, ScF3, TbF3, YbI3, ScI3, and TbI3, but the embodiments of the present disclosure are not limited thereto.

[0470] Alkali metal complexes, alkaline earth metal complexes, and rare earth metal complexes may respectively include ions of alkali metals, alkaline earth metals, and rare earth metals as described above, and the ligands coordinated with the metal ions of alkali metal complexes, alkaline earth metal complexes, or rare earth metal complexes may be selected from hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, and cyclopentadiene, but the embodiments disclosed herein are not limited thereto.

[0471] The electron injection layer may include (for example, composed of) alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof as described above. In one or more embodiments, the electron injection layer may further include organic materials. When the electron injection layer further includes organic materials, the alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or combinations thereof may be uniformly or non-uniformly dispersed in a matrix comprising the organic material.

[0472] The thickness of the electron injection layer can be approximately to approximately For example, about to approximately When the thickness of the electron injection layer is within the above range, the electron injection layer can have satisfactory electron injection characteristics without a significant increase in driving voltage.

[0473] [Second electrode 190]

[0474] The second electrode 190 may be disposed on the organic layer 150 having such a structure. The second electrode 190 may be a cathode (which is an electron injection electrode), and in this regard, the material to form the second electrode 190 may be selected from metals, alloys, conductive compounds and combinations thereof, each having a relatively low work function.

[0475] 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 embodiments of the present disclosure are not limited thereto. The second electrode 190 may be a transmission electrode, a semi-transmission (semi-reflection) electrode, or a reflection electrode.

[0476] The second electrode 190 may have a single-layer structure or a multi-layer structure comprising two or more layers.

[0477] In some embodiments, the organic light-emitting device 10 or 20 may further include a capping layer placed in the direction of light emission. According to the principle of constructive interference, the capping layer can improve the external light-emitting efficiency of the device.

[0478] The capping layer can be an organic capping layer including organic materials, an inorganic capping layer including inorganic materials, or a composite capping layer including both organic and inorganic materials.

[0479] The capping layer may include at least one material selected from the following: carbocyclic compounds, heterocyclic compounds, amine compounds, porphyrin derivatives, phthalocyanine derivatives, naphthylphthalocyanine derivatives, alkali metal complexes, and alkaline earth metal complexes. The carbocyclic compounds, heterocyclic compounds, and amine compounds may optionally be substituted with substituents containing at least one element selected from O, N, S, Se, Si, F, Cl, Br, and I. In one embodiment, the capping layer may include an amine compound. In one or more embodiments, the capping layer may include a compound represented by Formula 201 or a compound represented by Formula 202.

[0480] In one or more embodiments, the capping layer may include a compound selected from compounds HT28 to HT33 and compounds CP1 to CP5, but embodiments of this disclosure are not limited thereto:

[0481] The above text has already combined Figure 1 and Figure 2 An organic light-emitting device according to an embodiment is described.

[0482]

[0483] However, the embodiments disclosed herein are not limited thereto.

[0484] The layers constituting the hole transport region, the emission layer, and the electron transport region can be formed in a (set or predetermined) region using one or more suitable methods selected from vacuum deposition, spin coating, casting, Langmuir-Brookett (LB) deposition, inkjet printing, laser printing, and laser-induced thermal imaging.

[0485] When the layers constituting the hole transport region, the emitter layer, and the electron transport region are formed by vacuum deposition, the deposition can be carried out at a deposition temperature of about 100°C to about 500°C, and at a deposition temperature of about 10°C, taking into account the materials to be included in the layers to be formed and the structure of the layers to be formed. -8 To about 10 -3 The vacuum degree and about to approximately The deposition was carried out at a certain rate.

[0486] When the layer constituting the hole transport region, the emitter layer, and the layer constituting the electron transport region are formed by spin coating, the spin coating can be carried out at a coating speed of about 2,000 rpm to about 5,000 rpm and a heat treatment temperature of about 80°C to 200°C, taking into account the materials to be included in the layers to be formed and the structure of the layers to be formed.

[0487] [equipment]

[0488] Organic light-emitting devices can be included in a variety of devices.

[0489] One or more embodiments of this disclosure provide an apparatus including an organic light-emitting device.

[0490] The device may be, for example, a light-emitting device, an authentication device, or an electronic device, but embodiments of this disclosure are not limited thereto.

[0491] Light-emitting devices can be used as various displays, light sources and / or similar objects.

[0492] The authentication device may be, for example, a biometric authentication device that uses biometric information from a biometric body (e.g., a fingertip, pupil, and / or similar) to authenticate an individual.

[0493] In addition to organic light-emitting devices, authentication devices may further include biometric information collectors.

[0494] Electronic devices can be applied to personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, video game consoles, medical instruments (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram (ECG) displays, ultrasound diagnostic devices and / or endoscopic displays), fish finders, various measuring instruments, meters (e.g., instruments for vehicles, aircraft and ships), projectors and / or the like, but embodiments of this disclosure are not limited thereto.

[0495] In addition to the organic light-emitting device, the device may further include a thin-film transistor. Here, the thin-film transistor may include a source electrode, an active layer, and a drain electrode, wherein one of the source electrode and the drain electrode of the thin-film transistor may be in electrical contact with a first electrode of the organic light-emitting device.

[0496] [General definition of substituents]

[0497] As used in this article, the term "C1-C" 60 "alkyl" refers to a monovalent group of a straight-chain or branched aliphatic saturated hydrocarbon having 1 to 60 carbon atoms, preferably "C1-C". 20 "alkyl", and non-limiting examples include methyl, ethyl, propyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, and hexyl. The term "C1-C" is used herein.60 "alkylene" refers to C1-C 60 Alkyl groups have essentially the same divalent structure.

[0498] As used in this article, the term "C2-C" 60 "Alkenyl" refers to the group formed at C2-C. 60 The alkyl group has at least one carbon-carbon double bond at its middle or end, and non-limiting examples include vinyl, propenyl, and butenyl groups. As used herein, the term "C2-C" is used... 60 "Alkenyl" refers to C2-C 60 Alkenes have divalent groups with essentially the same structure.

[0499] As used in this article, the term "C2-C" 60 "Alkyne group" refers to the group at C2-C 60 An alkyl group having at least one carbon-carbon triple bond at its middle or end, and non-limiting examples include ethynyl and propynyl groups. As used herein, the term "C2-C" is used... 60 "Immyneyl" refers to C2-C 60 The alkynyl group is a divalent group with essentially the same structure.

[0500] As used in this article, the term "C1-C" 60 "Alkoxy" refers to the compound formed by -OA 101 (where A) 101 For C1-C 60 The monovalent group represented by alkyl is preferred, especially "C1-C". 20 "alkoxy", and non-limiting examples of which include methoxy, ethoxy and isopropoxy.

[0501] As used in this article, the term "C3-C" 10 "Cycloalkyl" refers to a monocyclic saturated hydrocarbon group having 3 to 10 carbon atoms, and non-limiting examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and cycloheptyl. As used herein, the term "C3-C" is also used. 10 "Cycloalkylene" refers to C3-C 10 Cycloalkyl groups have divalent groups with essentially the same structure.

[0502] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl" refers to a monovalent monocyclic group having at least one heteroatom selected from N, O, Si, P, and S as a cyclic atom and 1 to 10 carbon atoms, and non-limiting examples include 1,2,3,4-oxatriazolyl, tetrahydrofuranyl, and tetrahydrothiophenyl. The term "C1-C" as used herein is also used. 10 "Heterocyclic alkyl" refers to C1-C 10 Heterocyclic alkyl groups have divalent groups with essentially the same structure.

[0503] The term "C3-C" used in this article 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 being aromatic, and non-limiting examples include cyclopentenyl, cyclohexenyl, and cycloheptenyl. As used herein, the term "C3-C" is also used. 10 "Biopylene" refers to C3-C 10 Cycloalkenyl groups are divalent groups with essentially the same structure.

[0504] As used in this article, the term "C1-C" 10 "Heterocyclic alkenyl" refers to a monovalent monocyclic group having at least one heteroatom selected from N, O, Si, P, and S as a cyclic atom, 1 to 10 carbon atoms, and at least one double bond in its ring. C1-C 10 Non-limiting examples of heterocyclic alkenyl groups include 4,5-dihydro-1,2,3,4-oxarizolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothiopheneyl. As used herein, the term "C1-C..." 10 "Heterocyclic alkenyl" refers to C1-C 10 Heterocyclic alkenyl groups have divalent groups with essentially the same structure.

[0505] As used in this article, the term "C6-C" 60 "Aryl" refers to a monovalent group having a carbocyclic aromatic system (with 6 to 60 carbon atoms), and the term "C6-C" is used herein. 60 "Arylene" refers to a divalent group that has a carbocyclic aromatic system (with 6 to 60 carbon atoms). C6-C 60 Non-limiting examples of aryl groups include phenyl, naphthyl, anthraceneyl, phenanthryl, pyrene, and 1,2-benzophenanthryl. When C6-C... 60 Aryl and C6-C 60 When each of the aryl groups comprises two or more rings, these rings can be fused together.

[0506] As used in this article, the term "C1-C" 60 "Heteroaryl" refers to a monovalent group that has a heterocyclic aromatic system (in addition to 1 to 60 carbon atoms, it has at least one heteroatom selected from N, O, Si, P, and S as a cyclic atom). For example, the term "C1-C" as used herein... 60 "Hypo-heteroaryl" refers to a divalent group that has a heterocyclic aromatic system (in addition to 1 to 60 carbon atoms, it has at least one heteroatom selected from N, O, Si, P, and S as a cyclic atom). C1-C 60 Non-limiting examples of heteroaryl groups include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, and isoquinolinyl. When C1-C... 60 heteroaryl and C1-C 60When each heteroaryl group comprises two or more rings, these rings can fused together.

[0507] As used in this article, the term "C6-C" 60 "Aryloxy group" refers to -OA 102 (where A) 102 For C6-C 60 Aryl), and the term "C6-C" as used herein. 60 "Aromatic thiol" indicator - SA 103 (where A) 103 For C6-C 60 Aryl).

[0508] As used herein, the term "monovalent nonaromatic fused polycyclic group" refers to a monovalent group (e.g., having 8 to 60 carbon atoms) having two or more rings fused together, with only carbon atoms as cyclic atoms, and lacking aromaticity throughout its molecular structure. A non-limiting example of a monovalent nonaromatic fused polycyclic group is the fluorene group. As used herein, the term "divalent nonaromatic fused polycyclic group" refers to a divalent group having substantially the same structure as a monovalent nonaromatic fused polycyclic group.

[0509] As used herein, the term "monovalent nonaromatic fused heterocyclic group" refers to a monovalent group (e.g., having 1 to 60 carbon atoms) having two or more rings fused together, having at least one heteroatom selected from N, O, Si, P, and S as a cyclic atom in addition to the carbon atoms, and lacking aromaticity throughout its molecular structure. A non-limiting example of a monovalent nonaromatic fused heterocyclic group is the carbazoyl group. As used herein, the term "divalent nonaromatic fused heterocyclic group" refers to a divalent group having substantially the same structure as a monovalent nonaromatic fused heterocyclic group.

[0510] As used in this article, the term "C5-C" 60 "Carbocyclic group" refers to a monocyclic or polycyclic group having 5 to 60 carbon atoms (of which the cyclic atoms are only carbon atoms). For example, the term "C5-C" as used herein... 60 "Carbocyclic group" refers to aromatic carbocyclic groups or non-aromatic carbocyclic groups. (C5-C) 60 The carbocyclic group can be cyclic (e.g., benzene), monovalent (e.g., phenyl), or divalent (e.g., phenylene). In one or more embodiments, depending on the linkage to C5-C... 60 The number of substituents in the carbocyclic group, C5-C 60 The carbon ring group can be a trivalent group or a tetravalent group.

[0511] As used in this article, the term "C1-C" 60 "Heterocyclic group" refers to C5-C 60Carbocyclic groups have essentially the same structure, except that, in addition to carbon (the number of carbon atoms can range from 1 to 60), at least one heteroatom selected from N, O, Si, P and S is used as the cyclic atom.

[0512] In this specification, C5-C is replaced. 60 Carbocyclic groups, substituted C1-C 60 Heterocyclic groups, substituted C3-C 10 Cycloalkylene, substituted C1-C 10 Heterocyclic alkyl groups, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 aryl, substituted C1-C 60 Heteroaryl groups, substituted divalent nonaromatic fused polycyclic groups, substituted divalent nonaromatic fused heterocyclic groups, substituted C1-C 60 Alkyl, substituted C2-C 60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60 Alkoxy, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthioyl, substituted C1-C 60 At least one substituent from the heteroaryl group, the substituted monovalent nonaromatic fused polycyclic group, and the substituted monovalent nonaromatic fused heterocyclic group may be selected from:

[0513] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkoxy;

[0514] Each is substituted by at least one of the following C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C3-C 10 cycloalkyl, C1-C10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );

[0515] C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups;

[0516] Each is substituted by at least one of the following C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );as well as

[0517] -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

[0518] Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl and terphenyl.

[0519] As used herein, the term "Ph" represents phenyl, "Me" represents methyl, "Et" represents ethyl, and "ter-Bu" or "Bu" represents ethyl. t "" indicates tert-butyl, and as used herein, the term "Ome" indicates methoxy.

[0520] As used in this article, the term "biphenyl" refers to a phenyl group that has been substituted with a phenyl group. For example, "biphenyl" is a phenyl group with a C6-C2 substitution. 60 "Aryl" is an example type of "substituted phenyl" as a substituent.

[0521] The term "terphenyl" as used in this article refers to "a phenyl group substituted with a biphenyl group." "Terphenyl" is a phenyl group having a C6-C substituted structure. 60 Aryl-substituted C6-C 60 "Aryl" is "substituted phenyl" as a substituent.

[0522] Unless otherwise defined, as used herein, * and *' each refer to the binding site with the adjacent atom in the corresponding formula.

[0523] The compounds and organic light-emitting devices according to the embodiments will be described in more detail below with reference to synthesis examples and embodiments. The expression "using B instead of A" used to describe synthesis examples means using the same number of molar equivalents of A instead of molar equivalents of B.

[0524] [Example]

[0525] Embodiments of the device

[0526] Example 1-1

[0527] Corning 15Ω / cm 2 The ITO glass substrate (anode) is cut to a size of 50mm x 50mm x 0.5mm, ultrasonically treated with isopropyl alcohol and pure water for 5 minutes each, and then cleaned by exposure to ultraviolet light and ozone for 30 minutes. The ITO glass substrate is then fed into a vacuum deposition apparatus.

[0528] Compound HT1 was vacuum deposited on an ITO glass substrate to form a first hole transport layer with a thickness of 100 nm, and then compound HT2 was vacuum deposited on the first hole transport layer to form a second hole transport layer with a thickness of 10 nm.

[0529] Compound BH (the host) and compound BD (the dopant) were co-deposited on the second hole transport layer at a dopant concentration of 3 wt% to form an emitter layer with a thickness of 20 nm.

[0530] Compound 1-2 was deposited on the emitter layer to form a first auxiliary layer with a thickness of 5 nm, and compound 2-1 was deposited on the first auxiliary layer to form a second auxiliary layer with a thickness of 5 nm.

[0531] Compound ET34 and LiQ were co-deposited on a second auxiliary layer at a weight ratio of 5:5 to form an electron transport layer with a thickness of 20 nm. LiQ was then vacuum-deposited on the electron transport layer to form an electron injection layer with a thickness of 1 nm, and Mg:Ag was vacuum-deposited to form a cathode with a thickness of 10 nm, thereby completing the fabrication of the organic light-emitting device of Example 1-1.

[0532]

[0533] Examples 1-2 to 1-9 and Comparative Examples 1-1 to 1-3

[0534] Organic light-emitting devices according to Examples 1-2 to 1-9 and Comparative Examples 1-1 to 1-3 were manufactured in the same manner as in Examples 1-1, except that the compounds shown in Table 1 were used when forming the first auxiliary layer and the second auxiliary layer, respectively.

[0535] Example 2-1

[0536] The organic light-emitting device of Example 2-1 was manufactured in essentially the same manner as in Example 1-1, except that compound GH (body) and compound GD (dopant) were deposited at a dopant concentration of 10 wt% to form an emission layer with a thickness of 40 nm.

[0537] Examples 2-2 to 2-4 and Comparative Examples 2-1 to 2-3

[0538] The organic light-emitting devices of Examples 2-2 to 2-4 and Comparative Examples 2-1 to 2-3 were manufactured in substantially the same manner as in Example 2-1, except that the compounds shown in Table 1 were used when forming the first auxiliary layer and the second auxiliary layer, respectively.

[0539] Evaluation Example 1

[0540] The current efficiency and lifetime (TL) of the organic light-emitting devices in Examples 1-1 to 1-9 and 2-1 to 2-4, and Comparative Examples 1-1 to 1-3 and 2-1 to 2-3 were measured using a Keithley SMU 236 and a PR650 luminance meter. 90 The results are shown in Table 1. Lifetime (T) 90This indicates the amount of time elapsed when the brightness is 90% of the initial brightness (100%).

[0541] [Table 1]

[0542]

[0543]

[0544] Referring to Table 1, it is confirmed that Examples 1-1 to 1-9 and 2-1 to 2-4 have high current efficiency and long lifetime. In particular, compared with the organic light-emitting devices of Comparative Examples 1-1 to 1-3 and 2-1 to 2-3, the organic light-emitting devices of Examples 1-1 to 1-9 and 2-1 to 2-4 have excellent lifetime characteristics.

[0545] An organic light-emitting device comprising a first auxiliary layer and a second auxiliary layer, wherein the emission layer, the first auxiliary layer and the second auxiliary layer comprise materials specifically described or predetermined, which can suppress or reduce the degradation of the materials used to form the emission layer, and has high current efficiency and long lifespan.

[0546] It should be understood that the embodiments described herein are to be considered in a descriptive sense only and not for limiting purposes. The description of features or aspects within each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims and their equivalents.

Claims

1. An organic light-emitting device, comprising: First electrode; The second electrode facing the first electrode; and The organic layer between the first electrode and the second electrode, The organic layer comprises an emission layer, a first auxiliary layer, a second auxiliary layer, and an electron transport layer. The first auxiliary layer and the second auxiliary layer are located between the emission layer and the electron transport layer. The first auxiliary layer comprises a first compound, the first compound comprising a carbocyclic group having three or more rings, and The second auxiliary layer comprises: (i) a second compound as a bipolar compound, (ii) a third compound as a hole transport compound and a fourth compound as an electron transport compound, or (iii) the second compound as the bipolar compound and the fourth compound as the electron transport compound; The second compound is the compound represented by formula 2. Formula 2 In Equation 2, Y1 is selected from single bond, -O-, -S-, -C(R) 24 (R) 25 )-、-N(R 24 )-、-Si(R 24 (R) 25 )-, -C(=O)-, -S(=O)2-, -B(R 24 )-、-P(R 24 )- and -P(=O)(R 24 (R) 25 )-, k1 is either 0 or 1. CY 21 and CY 22 Each is independently selected from phenyl, naphthyl, fluorenyl, carbazole, pyridyl, phenanthroline, azafluorenyl, and azacarbazole. L 21 To L 23 Each is independently selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups. Ar 21 To Ar 23 Each can be independently selected from groups represented by free formula 2A, substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups. Selected from Ar 21 To Ar 23 At least one of them is a group represented by formula 2A, or CY 21 and CY 22 At least one of them is C1-C including the part *=N-*'. 60 Heterocyclic groups, a21 to a23 are each an independent integer selected from 0 to 3. b21 to b23 are each an independent integer selected from 0 to 8. c21 and c22 are each independent integers selected from 1 to 8. n21 and n22 are each an independent integer selected from 0 to 8. Formula 2A In Equation 2A, X 21 To X 23 Each can be independently represented as C or N. When X 21 To X 23 When each of the terms is C, R 23 At least one of them is -F; cyano; or a C1-C group substituted with at least one of -F and cyano. 60 alkyl, c23 is an integer selected from 1 to 5. R 21 To R 25 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), and -P(=O)(Q1)(Q2), Selected from Ar 21 To Ar 23 and R 21 To R 25 Two or more substituents in C5-C may optionally be connected to each other to form substituted or unsubstituted C5-C. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups, * Indicates the binding site with adjacent atoms. The substituted C5-C 60 Carbocyclic groups, the substituted C1-C 60 Heterocyclic groups, the substituted C1-C 60 Alkyl groups, the substituted C2-C 60 alkenyl, the substituted C2-C 60 alkynyl group, the substituted C1-C 60 Alkoxy groups, the substituted C3-C 10 cycloalkyl, the substituted C1-C 10 Heterocyclic alkyl groups, the substituted C3-C 10 cycloalkenyl, the substituted C1-C 10 Heterocyclic alkenyl groups, the substituted C6-C 60 Aryl, the substituted C6-C 60 aryloxy groups, the substituted C6-C 60 Arylthioyl, the substituted C1-C 60 heteroaryl, the substituted C1-C 60 Heteroaryl groups, the substituted C1-C 60 At least one substituent selected from the following: heteroarylsulfonyl group, the substituted monovalent nonaromatic fused polycyclic group, and the substituted monovalent nonaromatic fused heterocyclic group. Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkoxy; Each is substituted by at least one of the following C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 ); C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups; Each is substituted by at least one of the following C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );as well as -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 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl and terphenyl; The first compound is a compound represented by Formula 1: Formula 1 ， In Equation 1, A1 is selected from phenatenyl, phenanthryl, anthraceneyl, fluoranthyl, triphenylene, pyrene, 1,2-benzophenanthryl, tetraphenyl, francyl, perylene, and benzophenanthryl. L1 is selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups. a1 is an integer selected from 0 to 5. Ar1 is selected from substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups. b1 is an integer selected from 1 to 8. n1 is an integer selected from 1 to 8. R1 is selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 groups, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), and -P(=O)(Q1)(Q2), c1 is an integer selected from 1 to 10. The substituted C3-C 10 Cycloalkylene, the substituted C1-C 10 Heterocyclic alkyl groups, the substituted C3-C 10 Cycloalkenyl, the substituted C1-C 10 Heterocyclic alkenyl groups, the substituted C6-C 60 aryl, the substituted C1-C 60 Hypoaryl, the substituted divalent nonaromatic fused polycyclic group, the substituted divalent nonaromatic fused heterocyclic group, the substituted C1-C 60 Alkyl groups, the substituted C2-C 60 alkenyl, the substituted C2-C 60 alkynyl group, the substituted C1-C 60 Alkoxy groups, the substituted C3-C 10 cycloalkyl, the substituted C1-C 10 Heterocyclic alkyl groups, the substituted C3-C 10 cycloalkenyl, the substituted C1-C 10 Heterocyclic alkenyl groups, the substituted C6-C 60 Aryl, the substituted C6-C 60 aryloxy groups, the substituted C6-C 60 Arylthioyl, the substituted C1-C 60 At least one substituent selected from the heteroaryl group, the substituted monovalent non-aromatic fused polycyclic group, and the substituted monovalent non-aromatic fused heterocyclic group is: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkoxy; Each is substituted by at least one of the following C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 ); C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups; Each is substituted by at least one of the following C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );as well as -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 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl and terphenyl; The third compound is a compound represented by Formula 3, and The fourth compound is a compound represented by formula 4: Formula 3 Formula 4 ， Among them, in equations 3 and 4, CY 31 and CY 32 Each independently is C5-C 60 Carbocyclic groups or C1-C 60 Heterocyclic groups, X 41 For N or C[(L 44 ) a44 -(R 41 )], X 42 For N or C[(L 45 ) a45 -(R 42 )], and X 43 For N or C[(L 46 ) a46 -(R 43 )], L 31 To L 33 and L 41 To L 46 Each is independently selected from substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups. Ar 31 To Ar 33 and Ar 41 To Ar 43 Each is independently selected from substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, and substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups. a31 to a33 and a41 to a46 are each independent integers selected from 0 to 3. b31 to b33 and b41 to b46 are each independently an integer selected from 0 to 8. c31 and c32 are each independent integers selected from 1 to 8. n31 and n32 are each an independent integer selected from 0 to 8. R 31 R 32 and R 41 To R 43 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, 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 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1), and -P(=O)(Q1)(Q2), Selected from Ar 31 To Ar 33 Ar 41 To Ar 43 R 31 R 32 and R 41 To R 43 Two or more substituents in C5-C may optionally be connected to each other to form substituted or unsubstituted C5-C. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups, * Indicates the binding site with adjacent atoms. The substituted C5-C 60 Carbocyclic groups, the substituted C1-C 60 Heterocyclic groups, the substituted C1-C 60 Alkyl groups, the substituted C2-C 60 alkenyl, the substituted C2-C 60 alkynyl group, the substituted C1-C 60 Alkoxy groups, the substituted C3-C 10 cycloalkyl, the substituted C1-C 10 Heterocyclic alkyl groups, the substituted C3-C 10 cycloalkenyl, the substituted C1-C 10 Heterocyclic alkenyl groups, the substituted C6-C 60 Aryl, the substituted C6-C 60 aryloxy groups, the substituted C6-C 60 Arylthioyl, the substituted C1-C 60 heteroaryl, the substituted C1-C 60 Heteroaryl groups, the substituted C1-C 60 At least one substituent selected from the following: heteroarylsulfonyl group, the substituted monovalent nonaromatic fused polycyclic group, and the substituted monovalent nonaromatic fused heterocyclic group. Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkoxy; Each is substituted by at least one of the following C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl and C1-C 60 Alkyl groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 ); C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups; Each is substituted by at least one of the following C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -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 );as well as -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 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl and terphenyl.

2. The organic light-emitting device according to claim 1, wherein A1 is selected from phenanthrene, anthracene, triphenylene, pyrene, 1,2-benzophenanthrene, and benzophenanthrene.

3. The organic light-emitting device according to claim 1, wherein L1 is a group represented by one selected from formulas 3-1 to 3-26: ， in, In equations 3-1 to 3-26, Z1 to Z4 are each independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], phenatenyl, anthracene, fluoranyl, triphenylene, pyridyl, pyrazinyl, pyrimidinyl, quinolinyl, isoquinolinyl, benzo[quinolinyl], naphthidyl, quinoxalinyl, quinazolinyl, carbazole, phenanthridine, acridineyl, phenanthrolinel, phenazinyl, triazinyl, dibenzofuranyl, dibenzothiophene, -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 ) and -B(Q 31 (Q) 32 ), d3 is an integer selected from 1 to 3. d4 is an integer selected from 1 to 4. d5 is an integer selected from 1 to 5. d6 is an integer selected from 1 to 6. d8 is an integer selected from 1 to 8. Q 31 To Q 33 Each is independently selected from hydrogen, deuterium, and C1-C. 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, and naphthyl, and * and *' each indicate the binding site with the adjacent atom.

4. The organic light-emitting device according to claim 1, wherein: Ar1 is a group represented by one selected from Formula 5-1 to Formula 5-26, and R1 is selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkoxy groups and groups represented by one of formulas 5-1 to 5-26: ， Among them, in equations 5-1 to 5-26, Y 31 and Y 32 Each is independently represented by O, S, C(Z) 33 (Z) 34 ), N(Z 33 ) or Si(Z 33 (Z) 34 ), Z 31 To Z 34 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 alkenyl, C1-C 20 alkynyl group, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, phenanthryl, anthraceneyl, triphenylene, pyridyl, pyrimidinyl, carbazoleyl, and triazineyl. e3 is an integer selected from 1 to 3. e4 is an integer selected from 1 to 4. e5 is an integer selected from 1 to 5. e6 is an integer selected from 1 to 6. e7 is an integer selected from 1 to 7. e9 is an integer selected from 1 to 9, and * Indicates the binding site with adjacent atoms.

5. The organic light-emitting device according to claim 1, wherein the first auxiliary layer comprises at least one of the first compounds selected from compounds 1-1 to 1-18: 。 6. The organic light-emitting device according to claim 1, wherein: CY 31 and CY 32 Each is independently selected from phenyl, naphthyl, fluorenyl, phenanthryl, carbazole, dibenzofuranyl, dibenzothiopheneyl, and dibenzothiopheneyl.

7. The organic light-emitting device according to claim 1, wherein L 21 To L 23 L 31 To L 33 and L 41 To L 46 Each is selected independently from: Phenylidene, naphthylene, fluorenelene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthracene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiopheneyl, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiopheneyl, pyridyl, imidazolyl, pyrazolyl, thiopheneyl Azolyl, iminothiazolyl, iminooxazolyl, iminooxazolyl, iminothiadiazolyl, iminooxadiazolyl, iminopyrazinyl, iminopyridinyl, iminopyridinyl, triazinyl, iminopyrinyl, iminopyrinyl, iminopyrinyl, benzoquinolineyl, iminopyrazinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, iminopyridinyl, and iminopyrazoleyl; and Each of the following substituted compounds is selected from at least one of the following: phenylene, naphthylene, fluorene, spiro-difluorene, benzo[a]fluorene, dibenzo[a]fluorene, phenanthrene, anthracene, fluoranthylene, triphenylene, pyrene, 1,2-benzophenanthrene, perylene, pentafenyl, hexaphenylene, pentaphenylene, thiophene, furanyl, carbazolyl, indoleyl, isoyindoleyl, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzo[a]carbazolyl, dibenzo[a]carbazolyl, dibenzothiophene, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, etc. Oxazolyl, isoxazolyl, thiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxalinyl, quinoxalinyl, quinoxalinyl, phenanthrinyl, acridineyl, phenanthrolineyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisisoxazolyl, benzisisoxazolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl and zazacarbazolyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthracene, fluoranyl, triphenylene, pyrene, 1,2-benzophenanthryl, perylene, pentafenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyridyl Azolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cenolinyl, phenanthridine, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, benzisisothiazolyl, benzisoxazolyl, benzisisothiazolyl, triazolyl, tetrazolyl, imidazopyridyl, 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 ),and Q 31 To Q 33 Each is independently selected from C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, C1-C 10 Alkyl-substituted phenyl, biphenyl, terphenyl, and naphthyl groups.

8. The organic light-emitting device according to claim 1, wherein: Ar 21 To Ar 23 Ar 31 To Ar 33 and Ar 41 To Ar 43 Each is independently represented by a group selected from formulas 5-1 to 5-26 and 6-1 to 6-55. Selected from Ar 21 To Ar 23 At least one of them is a group represented by one selected from Formulas 6-1 to 6-55: ， Among them, in equations 5-1 to 5-26 and equations 6-1 to 6-55, Y 31 and Y 32 Each is independently represented by O, S, C(Z) 33 (Z) 34 ), N(Z 33 ) or Si(Z 33 (Z) 34 ), Z 31 To Z 34 Each is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 alkenyl, C1-C 20 alkynyl group, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spiro-difluorenyl, phenanthryl, anthraceneyl, triphenylene, pyridyl, pyrimidinyl, carbazoleyl, and triazineyl. e2 is 1 or 2. e3 is an integer selected from 1 to 3. e4 is an integer selected from 1 to 4. e5 is an integer selected from 1 to 5. e6 is an integer selected from 1 to 6. e7 is an integer selected from 1 to 7. e9 is an integer selected from 1 to 9, and * Indicates the binding site with adjacent atoms.

9. The organic light-emitting device according to claim 1, wherein R 21 To R 25 R 31 R 32 and R 41 To R 43 Each is selected independently from: Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], pyrene, phenerenoyl, anthracene, fluoranyl, triphenylene, pyrrolyl, thiophene, furanyl, thiophene, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoyindolyl, indoleyl, purine, quinolinyl, isoquinolinyl, benzo[quinolinyl], phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl phenanthroline, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophene, benzothiopyrrolyl, benzoisothiazolyl, benzooxazolyl, benzoisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, dibenzothiopyrrolyl, carbazole, benzocarbazole, dibenzocarbazole, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, oxazolopyridyl, thiazopyridyl, benzonaphthidyl, azafluorenyl, azaspiro-difluorenyl, azacarbazole, azadibenzofuranyl, azadibenzothiophene, azadibenzothiopyrrolyl, biphenyl and terphenyl; and Each of the following substituted groups is selected from at least one of the following: cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[9,10]fluorenyl, benzo[9,10]fluorenyl, pyrroleyl, thiopheneyl, furanyl, thiopheneyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoyindolyl, indoleyl, purineyl, quinolinyl, isoquinolinyl, benzo[9,10]quinolinyl, phthalazinyl, naphthidyl, quinoxolinyl, quinazolinyl, cinolinyl, phenanthridineyl, acridineyl, phenanthrolyl, phenazinyl, phenazinyl Benzimidazolyl, benzofuranyl, benzothiophenyl, benzothiopyrrolyl, benzoisothiazolyl, benzooxazolyl, benzoisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, dibenzothiopyrrolyl, carbazoleyl, benzocarbazoleyl, dibenzocarbazoleyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, oxazolopyridyl, thiazopyridyl, benzonaphthidyl, azafluorenyl, azaspiro-difluorenyl, azacarbazoleyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzothiopyrrolyl, biphenyl and terphenyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, naphthyl, fluorenyl, spiro-difluorenyl, spiro-fluorenyl-benzo[fluorenyl], benzo[fluorenyl], dibenzo[fluorenyl], pyrene, phenatenyl, anthracene, fluoranyl, triphenylene, pyrrolyl, thiophene, furanyl, thiophene, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indoleyl, isoyindolyl, indazoleyl, purine, quinolinyl, isoquinolinyl, benzo[quinolinyl], phthalazinyl, naphthidyl, quinoxalinyl, quinazolinyl, cinolinyl, phenanthridine, acridineyl , phenanthroline, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophene, benzothiopyrrolyl, benziisothiazolyl, benzooxazolyl, benziisooxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophene, dibenzothiopyrrolyl, carbazolyl, benzocarbazolyl, dibenzocarbazolyl, thiadiazolyl, imidazopyridyl, imidazopyrimidinyl, oxidazopyridyl, thiazopyridyl, benzonaphthidyl, azafluorenyl, azaspiro-difluorenyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophene, azadibenzothiopyrrolyl, biphenyl and terphenyl.

10. The organic light-emitting device according to claim 1, wherein: The second compound is selected from compounds 2-1 to 2-23. The third compound is selected from compounds 3-1 to 3-16, and The fourth compound is selected from compounds 4-1 to 4-31: 。 11. The organic light-emitting device according to claim 1, wherein the electron transport layer comprises a metal-containing material and a fifth compound, said fifth compound being a metal-free compound comprising at least one ring of nitrogen containing π electrons depleted.

12. The organic light-emitting device according to claim 11, wherein the metal-containing material comprises at least one selected from alkali metal complexes and alkaline earth metal complexes.

13. The organic light-emitting device according to claim 1, wherein: The first auxiliary layer is on the emission layer. The second auxiliary layer is on top of the first auxiliary layer, and The electron transport layer is located on the second auxiliary layer.

14. The organic light-emitting device according to claim 1, wherein: The first electrode is the anode. The second electrode is the cathode. The organic layer includes an electron transport region between the emitter layer and the second electrode. The electron transport region includes the electron transport layer, and The electron transport region optionally further includes a hole blocking layer and / or an electron injection layer.

15. The organic light-emitting device according to claim 1, wherein: The first electrode is the anode. The second electrode is the cathode. The organic layer further includes a hole transport region between the first electrode and the emitter layer, and The hole transport region includes a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

16. The organic light-emitting device according to claim 1, wherein: The emitter layer includes a host and a dopant, and The dopant includes phosphorescent dopant or fluorescent dopant.

17. The organic light-emitting device of claim 16, wherein the emitting layer emits green light having a maximum emission wavelength of 490 nm to 580 nm or blue light having a maximum emission wavelength of 410 nm to 490 nm.

18. An apparatus comprising an organic light-emitting device and a thin-film transistor according to any one of claims 1 to 17. The first electrode of the organic light-emitting device is in electrical contact with one of the source electrode and drain electrode selected from the thin-film transistor.

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