Light emitting device and electronic device including the same

Abstract

The present application provides a light-emitting device and an electronic device including the light-emitting device. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode. The intermediate layer includes an emission layer and a hole transport region between the emission layer and the first electrode. The hole transport region contains at least one first compound containing m1 number of 15 N, m1 number of 15 N is connected to an adjacent carbon (C) via a single bond, m1 is an integer equal to or greater than 1, and the first compound is not Compound A in the specification.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0078803, filed with the Korean Intellectual Property Office on June 26, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The implementation scheme relates to a light-emitting device and an electronic device including the light-emitting device. Background Technology

[0004] In light-emitting devices, organic light-emitting devices are self-emitting devices, which, compared with devices in the field, have wide viewing angles, high contrast, short response times, and superior characteristics in terms of brightness, driving voltage, and 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 stacked 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 transition from an excited state to the ground state, thereby generating light. Summary of the Invention

[0006] The implementation scheme relates to a light-emitting device comprising a compound having excellent light emission efficiency and high stability, and an electronic device comprising said light-emitting device.

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

[0008] According to one aspect, a light-emitting device is provided, which may include a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode.

[0009] The intermediate layer may include an emitter layer and a hole transport region between the emitter layer and the first electrode.

[0010] The hole transport region may contain at least one type containing m1. 15 The first compound of N,

[0011] m1 quantity 15 N can be linked to an adjacent carbon (C) via a single bond.

[0012] m1 can be an integer equal to or greater than 1, and

[0013] The at least one first compound may not be compound A:

[0014]

[0015] In the implementation scheme, m1 is connected via a single key. 15 At least one of the Cs in N can be 12 C.

[0016] In the implementation scheme, m1 can be an integer from 1 to 10.

[0017] In the implementation plan, the quantity of m1 15 At least one of N 15 N can form part of a cyclic group contained in at least one of the first compounds.

[0018] In the implementation plan, the quantity of m1 15 At least one of N 15 N may not form part of the cyclic group contained in the at least one first compound.

[0019] In an embodiment, the at least one first compound may further comprise an amount of m2. 14 N, m2 quantity 14 N can be linked to an adjacent carbon (C) via a single bond, and m2 can be an integer equal to or greater than 1.

[0020] In the implementation plan, the quantity of m2 14 At least one of N 14 N may not form part of the cyclic group contained in the at least one first compound.

[0021] In an embodiment, the at least one first compound may contain two or more N atoms, and when two of the two or more N atoms are attached to a heteroatom-free group, at least one of the two N atoms may be... 15 N.

[0022] In an embodiment, the at least one first compound may comprise two or more N atoms, each of which may form a first cyclic group and a second cyclic group, and when the first cyclic group and the second cyclic group form a fused ring with each other, at least one of the two or more N atoms may be... 15 N.

[0023] In the implementation scheme, each N contained in the at least one first compound may be 15 N.

[0024] In an embodiment, the at least one first compound may further comprise O, S, Si, P, B, or a combination thereof.

[0025] In the embodiments, each of the at least one first compound may be represented by one of Formula 1, Formula 1-1, Formula 2, Formula 2-1, and Formula 3:

[0026]

[0027]

[0028] In Equations 1, 1-1, 2, 2-1, and 3,

[0029] Y 21 It can be O, S, Se, C(Z) 21a (Z) 21b ), Si(Z) 21a (Z) 21b ) or N * (Z 21a ),

[0030] Y 31 It can be O, S, Se, C(Z) 31a (Z) 31b ), Si(Z) 31a (Z) 31b ) or N * (Z 31a ),

[0031] Y 32 It can be O, S, Se, C(Z) 32a (Z) 32b ), Si(Z) 32a (Z) 32b ) or N * (Z 32a ),

[0032] N * It can be 14 N or 15 N,

[0033] At least one N from Equation 1, Equation 1-1, Equation 2, Equation 2-1, or Equation 3 * It can be 15 N,

[0034] b21, b31, and b32 can each be an integer from 0 to 3 independently.

[0035] Ar 11 To Ar 14 Ar 21 Ar 22and Ar 24 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0036] Ring A 21 Ring A 22 And Ring A 31 To Ring A 34 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0037] L 10 L 20 and L 30 They can each be *-O-*', *-S-*', or *-N independently. * (Ar 15 )-*', unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0038] Ar 15 Can be related to Ar 11 The descriptions are the same.

[0039] L 11 To L 14 and L 21 To L 24 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0040] a11 to a14 and a21 to a24 can each be an integer from 0 to 10 independently.

[0041] a10, a20, and a30 can each be an integer from 1 to 5 independently.

[0042] R 21 R 22 R 31 To R 34Z 21a Z 21b Z 31a Z 31b Z 32a and Z 32b Each of these groups can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 alkyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 alkenyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 The alkynyl group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thioyl groups, -Si(Q1)(Q2)(Q3), -N * (Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2),

[0043] c21, c22, and c31 through c34 can each be an integer from 0 to 10 independently.

[0044] n can be an integer from 1 to 5.

[0045] R 10a It could be:

[0046] Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group;

[0047] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl 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 -P(=O)(Q) 11 (Q) 12 C1-C replaced by ) or a combination thereof 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group or C1-C 60 alkoxy group;

[0048] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl 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 -P(=O)(Q) 21 (Q) 22 C3-C replaced by (or a combination thereof) 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group or C6-C 60 aryl thioyl group; or

[0049] -Si(Q 31 (Q) 32 (Q) 33 ), -N * (Q 31 (Q) 32 -B(Q) 31(Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ),

[0050] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 And Q 31 To Q 33 These can be, independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy groups; or each unsubstituted or deuterated, -F, cyano groups, C1-C 60 Alkyl groups, C1-C 60 C3-C substituted with alkoxy groups, phenyl groups, biphenyl groups, or combinations thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups,

[0051] When included in C1-C 60 When the heteroatom in the heterocyclic group is a nitrogen atom, the nitrogen atom can be... 14 N or 15 N,

[0052] The nitrogen atom contained in the cyano group or the nitro group may be 14 N or 15 N, and

[0053] N * It can be 14 N or 15 N.

[0054] In an implementation, the hole transport region may contain two or more first compounds that are different from each other.

[0055] In an implementation, the hole transport region may include a first layer and a second layer between the first layer and the emitter layer, the first layer and the second layer may each contain the at least one first compound, and the at least one first compound contained in the first layer may be different from the at least one first compound contained in the second layer.

[0056] In an implementation scheme, the at least one first compound contained in the first layer may contain m 11 Quantity 15 N, the at least one first compound contained in the second layer may contain m 12 Quantity 15 N, and m 11 It can be greater than m 12 .

[0057] In an implementation, the emitting layer may include a first emitting layer, a second emitting layer, and a third emitting layer, each having a different emitting color. The hole transport region may include a first emitting auxiliary layer between the first electrode and the first emitting layer, a second emitting auxiliary layer between the first electrode and the second emitting layer, and a third emitting auxiliary layer between the first electrode and the third emitting layer. At least one of the first emitting auxiliary layer, the second emitting auxiliary layer, and the third emitting auxiliary layer may contain the at least one first compound.

[0058] According to another aspect, a light-emitting device is provided, which may include a first electrode, a second electrode facing the first electrode, an intermediate layer between the first electrode and the second electrode, and

[0059] A covering layer disposed outside the second electrode and having a refractive index equal to or greater than about 1.6.

[0060] The intermediate layer may include an emitter layer and a hole transport region between the emitter layer and the first electrode.

[0061] The hole transport region may contain at least one first compound as described above.

[0062] According to another aspect, an electronic device including the light-emitting device is provided, wherein the electronic device may further include a thin-film transistor, the thin-film transistor may include a source electrode and a drain electrode, and the first electrode of the light-emitting device may be electrically connected to the source electrode or the drain electrode.

[0063] In an implementation scheme, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or a combination thereof. Attached Figure Description

[0064] 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...

[0065] Figures 1 to 3 Each is a schematic cross-sectional view of the structure of the light-emitting device according to the implementation scheme. Detailed Implementation

[0066] Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein the same reference numerals refer to the same elements throughout. In this respect, embodiments may take different forms and should not be construed as limited to the description set forth herein. Therefore, the embodiments are described below only with reference to the accompanying drawings to explain aspects of this disclosure.

[0067] For ease of explanation, the dimensions of the elements in the accompanying drawings may be enlarged. Therefore, since the dimensions and thicknesses of the components in the drawings can be arbitrarily illustrated for ease of explanation, the following embodiments of this disclosure are not limited thereto.

[0068] As used herein, expressions such as “a”, “an” and “the” used for the singular are intended to also include the plural form, unless the context clearly indicates otherwise.

[0069] It should be understood that the terms “comprises,” “comprising,” “includes,” “including,” “have,” “having,” “contains,” “containing,” etc., are intended to indicate the presence of the features, integers, steps, operations, elements, components, or combinations thereof specified in this disclosure, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0070] In the description, it should be understood that when an element (area, layer, section, etc.) is referred to as being "on", "connected to", or "attached to" another element, it may be directly on, directly connected to, or directly attached to the other element, or one or more intermediate elements may be disposed therebetween.

[0071] As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items. For example, “A and / or B” can be understood to mean “A, B, or A and B”. The terms “and” and “or” can be used in the sense of conjunctions or antonymous conjunctions and can be understood as equivalent to “and / or”.

[0072] For purposes of meaning and interpretation, the term "at least one of..." is intended to include the meaning of "selected from at least one of...". For example, "at least one of A and B" can be understood to mean "A, B, or A and B". When preceding a column of elements, the term "at least one of..." modifies the elements of the entire column but not any individual element in the column.

[0073] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of embodiments of the inventive concept, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0074] The terms "below," "down," "above," "up," etc., are used to describe the relationships of the configurations shown in the accompanying drawings. These terms are used as relative concepts and are described with reference to the directions indicated in the drawings.

[0075] As used herein, the terms “about” or “approximately” include a specified value and mean within an acceptable range of deviation from the value as determined by a person skilled in the art taking into account the relevant measurements and errors associated with the measurement of the quantity (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations, or within ±20%, ±10%, or ±5% of the specified value.

[0076] Unless otherwise defined or implied herein, all terms used (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It should be further understood that terms (e.g., those defined in common dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant field and should not be interpreted in an idealized or overly formal sense unless expressly defined in the specification.

[0077] The light-emitting device may include a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode.

[0078] The intermediate layer may include an emitter layer and a hole transport region between the emitter layer and the first electrode.

[0079] The hole transport region may contain at least one type of region containing m1. 15 The first compound of N.

[0080] m1 quantity 15 N can be linked to an adjacent carbon (C) via a single bond.

[0081] m1 can be an integer equal to or greater than 1, and

[0082] The first compound may not be compound A:

[0083]

[0084] m1 quantity 15 N can be linked to an adjacent carbon (C) via a single bond. A single bond is a covalent bond with a bond order of 1, which is distinctly different from a double bond with a bond order of 2.

[0085] In the implementation scheme, m1 is connected via a single key. 15 At least one of the Cs in N can be 12 C. 12 C may not include carbon (C) isotopes. 13 C.

[0086] In the implementation plan, the quantity of m1 15 At least one of N 15 N can form part of the cyclic group contained in the first compound.

[0087] In the implementation plan, the quantity of m1 15 At least one of N 15 N may not form part of the cyclic group contained in the first compound.

[0088] Those skilled in the art will readily recognize that compound 16 indicates the presence of the first 15 N and second 15 An embodiment of the first compound of N, wherein the first 15 N can form part of the cyclic group contained in the first compound, and the second 15 N may not form part of the cyclic group contained in the first compound.

[0089]

[0090] In the implementation scheme, the first compound may further contain an amount of m2. 14 N, m2 quantity 14 N can be linked to an adjacent carbon (C) via a single bond, and m2 can be an integer equal to or greater than 1.

[0091] In the implementation plan, the quantity of m2 14 At least one of N 14 N can form part of the cyclic group contained in the first compound.

[0092] In the implementation plan, the quantity of m2 14 At least one of N14 N may not form part of the cyclic group contained in the first compound.

[0093] Those skilled in the art will readily recognize that compound 8 indicates the presence of 15 N and 14 An embodiment of the first compound of N, wherein 14 N may not form part of the cyclic group contained in the first compound. Those skilled in the art will readily recognize that compound 11 indicates the presence of... 15 N and 14 An embodiment of the first compound of N, wherein 14 N can form part of the cyclic group contained in the first compound.

[0094]

[0095] In an embodiment, the first compound may contain two or more N atoms, and when two of the two or more N atoms are attached to a heteroatom-free group, at least one of the two N atoms may be... 15 N. A heteroatom-free group refers to a group composed of C and H atoms.

[0096] In the embodiments, the heteroatom-free group can be a carbocyclic group, such as a phenyl group or a naphthalene group, but the embodiments of this disclosure are not limited thereto.

[0097] In an embodiment, the first compound may contain two or more N atoms, each of which may form a first cyclic group and a second cyclic group, and when the first cyclic group and the second cyclic group form a fused ring with each other, at least one of the two or more N atoms may be... 15 N.

[0098] In the implementation scheme, the first compound may be compound 22, but the implementation scheme of this disclosure is not limited thereto.

[0099]

[0100] In the first compound, m1 can be an integer equal to or greater than 1.

[0101] In the implementation scheme, m1 can be an integer from 1 to 10.

[0102] In the implementation scheme, m1 can be an integer from 1 to 6.

[0103] The first compound may not be compound A.

[0104]

[0105] In the implementation scheme, each N contained in the first compound can be 15 N.

[0106] In the implementation scheme, the first compound may not contain 14 N.

[0107] In the embodiments, the first compound may further comprise O, S, Si, P, B, or any combination thereof.

[0108] In the embodiments, the first compound may contain O, S, Si or any combination thereof, but the embodiments of this disclosure are not limited thereto.

[0109] In the implementation scheme, the first compound may be represented by one of Formula 1, Formula 1-1, Formula 2, Formula 2-1, and Formula 3:

[0110]

[0111]

[0112] In Equations 1, 1-1, 2, 2-1, and 3,

[0113] Y 21 It can be O, S, Se, C(Z) 21a (Z) 21b ), Si(Z) 21a (Z) 21b ) or N * (Z 21a ),

[0114] Y 31 It can be O, S, Se, C(Z) 31a (Z) 31b ), Si(Z) 31a (Z) 31b ) or N * (Z 31a ),as well as

[0115] Y 32 It can be O, S, Se, C(Z) 32a (Z) 32b ), Si(Z) 32a (Z) 32b ) or N * (Z 32a ).

[0116] In the implementation plan, Y 21 It can be O, S, C(Z) 21a (Z) 21b ) or N * (Z 21a ),

[0117] Y 31 It can be O, S, C(Z) 31a (Z) 31b ) or N * (Z 31a ),as well as

[0118] Y 32 It can be O, S, C(Z) 32a (Z) 32b ) or N * (Z 32a However, the implementation of this disclosure is not limited to this.

[0119] In Equations 1, 1-1, 2, 2-1, and 3, N * It can be 14 N or 15 N, and at least one N * It can be 15 N.

[0120] In Equations 1, 1-1, 2, 2-1 and 3, b21, b31 to b32 can each be an integer from 0 to 3 independently.

[0121] In Equations 1, 1-1, 2, 2-1, and 3, Ar 11 To Ar 14 Ar 21 Ar 22 and Ar 24 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups.

[0122] In the implementation plan, Ar 11 To Ar 15 Ar 21 Ar 22 and Ar 24 Each group can be independently a phenyl group, naphthyl group, anthracene group, phenanthrene group, benzo[a]phenanthrene group, pyrene group, etc. Groups, cyclopentadienyl group, 1,2,3,4-tetrahydronaphthyl group, thiophene group, furan group, pyrrole group, indole group, indene group, benzothiophene group, benzofuran group, carbazole group, fluorene group, spirodifluorene group, dibenzothiophene group, dibenzofuran group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinoline group, quinoline group Azoline group, phenanthrene-rhein group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzothiazole group, benzoxadiazole group, benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group, 5,6,7,8-tetrahydroquinoline group or dithiine group.

[0123] In the implementation plan, Ar 11 To Ar 15 Ar 21 Ar 22 and Ar 24 Each group can be independently a phenyl group, naphthol group, indole group, carbazole group, fluorene group, spirodifluorene group, dibenzofuran group, or dithiain group.

[0124] In Equations 1, 1-1, 2, 2-1, and 3, ring A 21 Ring A 22 And Ring A 31 To Ring A 34 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups.

[0125] In the implementation plan, ring A 21 Ring A 22 And Ring A 31 To Ring A 34 Each group can be independently a phenyl group, naphthyl group, anthracene group, phenanthrene group, benzo[a]phenanthrene group, pyrene group, etc. Groups, cyclopentadienyl group, 1,2,3,4-tetrahydronaphthyl group, thiophene group, furan group, pyrrole group, indole group, indene group, benzothiophene group, benzofuran group, carbazole group, fluorene group, spirodifluorene group, dibenzothiophene group, dibenzofuran group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxal Phosphoryl group, quinazoline group, phenanthrene-rholine group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzothiazole group, benzoxadiazole group, benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group, 5,6,7,8-tetrahydroquinoline group or dithiain group.

[0126] In the implementation plan, ring A 21 Ring A 22 And Ring A 31 To Ring A 34 Each group can be independently a phenyl group, naphthol group, indole group, carbazole group, fluorene group, spirodifluorene group, dibenzofuran group, or dithiain group.

[0127] In Equations 1, 1-1, 2, 2-1, and 3, L 10 L 20 and L 30 They can each be *-O-*', *-S-*', or *-N independently. * (Ar 15 )-*', unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups.

[0128] In Equations 1, 1-1, 2, 2-1, and 3, Ar 15 It can be compared with the Ar in the instruction manual. 11 The descriptions are the same.

[0129] In Equations 1, 1-1, 2, 2-1, and 3, L 11 To L 14 and L 21 To L 24 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups.

[0130] In the implementation plan, L 10 To L 14 L 20 To L 24 and L 30 Each group can be independently a phenyl group, naphthyl group, anthracene group, phenanthrene group, benzo[a]phenanthrene group, pyrene group, etc. Groups, cyclopentadienyl group, 1,2,3,4-tetrahydronaphthyl group, thiophene group, furan group, pyrrole group, indole group, indene group, benzothiophene group, benzothiophene group, benzofuran group, carbazole group, fluorene group, dibenzothiophene group, dibenzothiophene group, dibenzofuran group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinoxaline group, quinazoline group, phenanthrene group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzoimidazolium group, benzooxazole group, benzothiazole group, benzooxadiazole group, benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group or 5,6,7,8-tetrahydroquinoline group.

[0131] In the implementation plan, L 10 To L 14 L 20 To L 24 and L 30 Each group can be a phenyl group or a naphthalene group independently, but the embodiments disclosed herein are not limited thereto.

[0132] In Equations 1, 1-1, 2, 2-1 and 3, a11 to a14 and a21 to a24 can each be an integer from 0 to 10 independently.

[0133] In the implementation scheme, a11 to a14 and a21 to a24 can each be an integer from 0 to 5 independently, but the implementation scheme of this disclosure is not limited thereto.

[0134] In Equations 1, 1-1, 2, 2-1 and 3, a10, a20 and a30 can each be an integer from 1 to 5 independently.

[0135] In Equations 1, 1-1, 2, 2-1, and 3, R 21 R 22 R 31 To R 34 Z 21a Z 21b Z 31a Z 31b Z 32a and Z 32bEach of these groups can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 alkyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 alkenyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 The alkynyl group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thioyl groups, -Si(Q1)(Q2)(Q3), -N * (Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2).

[0136] In the implementation plan, R 21 R 22 R 31 To R 34 Z 21a Z 21b Z 31a Z 31b Z 32a and Z 32b Each can be independent of the following:

[0137] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group;

[0138] Each unsubstituted or replaced group, including deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantyl group, norbornyl group, norbornenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, pyridyl group, pyrimidinyl group, -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 -P(=O)(Q) 31 (Q) 32 C1-C substituted by (or any combination thereof) 20 Alkyl groups, C2-C 20 alkenyl groups, C2-C 20 alkynyl group or C1-C 20 alkoxy group;

[0139] Each unsubstituted or replaced group, including deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, C1-C 20 Alkyl groups, C2-C 20 alkenyl groups, C2-C 20 alkynyl group, C1-C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantyl group, norbornyl group, norbornenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenanthryl group, anthracene group, fluoranyl group, benzo[a]phenanthryl group, pyrene group, Benzyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazole group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group, indoleyl group, indazole group, purine group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, cenolinyl group Groups, carbazolyl groups, phenanthrolinyl groups, benzimidazole groups, benzofuranyl groups, benzothiophene groups, benzisothiazolyl groups, benzoxazolyl groups, benzisothiazolyl groups, triazolyl groups, tetrazolyl groups, oxadiazolyl groups, triazine groups, dibenzofuranyl groups, dibenzothiophene groups, benzocarbazolyl groups, dibenzocarbazolyl groups, imidazopyridyl groups, imidazopyrimidinyl groups, -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 -P(=O)(Q) 31 (Q) 32 The cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantyl group, norbornyl group, norbornenyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenanthryl group, anthracene group, fluoranyl group, benzophenanthryl group, pyrene group, or any combination thereof are substituted with these groups. Benzyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazole group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, isoindoleyl group, indoleyl group, indazole group, purine group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, zoline Benzyl group, carbazolyl group, phenanthrolinel group, benzimidazole group, benzofuranyl group, benzothiophene group, benzisothiazolyl group, benzoxazolyl group, benzisothiazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazine group, dibenzofuranyl group, dibenzothiophene group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridyl group, and imidazopyrimidinyl group; or

[0140] -B(Q1)(Q2), -P(Q1)(Q2), -N * (Q1)(Q2) or -C(=O)(Q1).

[0141] In Equations 1, 1-1, 2, 2-1 and 3, c21, c22 and c31 to c34 can each be an integer from 0 to 10 independently.

[0142] In Equations 1, 1-1, 2, 2-1, and 3, n can be an integer from 1 to 5.

[0143] In Equations 1, 1-1, 2, 2-1, and 3, R 10a It can be: deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group;

[0144] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C60 aryl thioyl 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 -P(=O)(Q) 11 (Q) 12 C1-C substituted by (or any combination thereof) 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group or C1-C 60 alkoxy group;

[0145] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl 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 -P(=O)(Q) 21 (Q) 22 C3-C substituted by any combination thereof 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group or C6-C 60 aryl thioyl group; or

[0146] -Si(Q 31 (Q) 32 (Q) 33 ), -N * (Q31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ).

[0147] In Equations 1, 1-1, 2, 2-1, and 3, Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 These can be, independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy groups; or each unsubstituted or deuterated, -F, cyano groups, C1-C 60 Alkyl groups, C1-C 60 C3-C substituted with alkoxy groups, phenyl groups, biphenyl groups, or any combination thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups.

[0148] In Equations 1, 1-1, 2, 2-1, and 3, when included in C1-C 60 When the heteroatom in the heterocyclic group is a nitrogen atom, the nitrogen atom can be... 14 N or 15 N,

[0149] The nitrogen atom contained in the cyano group or nitro group can be 14 N or 15 N, and

[0150] N * It can be 14 N or 15 N.

[0151] In the implementation scheme, the hole transport region may contain two or more first compounds that are different from each other.

[0152] In an implementation, the hole transport region may include a first layer and a second layer between the first layer and the emitter layer. The first layer and the second layer may each contain at least one first compound, and the first compound contained in the first layer may be different from the first compound contained in the second layer.

[0153] In the implementation scheme, the first layer and the second layer can each be independently a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

[0154] In the implementation scheme, the first compound contained in the first layer may contain m 11 Quantity 15 N, the first compound contained in the second layer may contain m 12 Quantity 15 N, and m 11 It can be greater than m 12 .

[0155] In the implementation scheme, the first compound contained in the first layer may contain m 21 Quantity 14 N, the first compound contained in the second layer may contain m 22 Quantity 14 N, and m 21 Can be with m 22 same.

[0156] In the implementation plan,

[0157] The hole transport region may contain at least one of the first compounds selected from compounds 1 to 24:

[0158]

[0159]

[0160] The first compound contained in the light-emitting device can be used with more than usual... 14 N is heavier 15 N (an isotope of nitrogen) replaces nitrogen atoms to increase 15 Stability of NC single bonds. 15 N can lower the vibrational energy within the molecule, and therefore, the energy dissipated as vibrational energy can be reduced, and efficiency can be increased. The CN single bonds in materials with hole transport properties are weak, and therefore it is known that the stability of the CN single bonds determines the overall stability of the molecule and has a significant impact on the lifespan of the device. Because of the number of m1... 15 N is linked to the adjacent carbon (C) via a single bond, so the first compound of this disclosure can be obtained by using... 15N substitution provides increased CN bond stability, and thus the device can have an increased lifetime. Therefore, the first compound can be used as a material for hole transport regions with excellent efficiency and excellent stability, and electronic devices containing the first compound (e.g., organic light-emitting devices) can have excellent light emission efficiency and long lifetime.

[0161] At least one of the first compounds can be used in a light-emitting device (e.g., an organic light-emitting device). Therefore, a light-emitting device is provided, comprising: a first electrode; a second electrode facing the first electrode; and an intermediate layer between the first electrode and the second electrode, wherein the intermediate layer includes an emitting layer and a hole transport region between the emitting layer and the first electrode, and the hole transport region contains at least one of the first compounds as described in the specification.

[0162] In this embodiment, the first electrode of the light-emitting device can be an anode, the second electrode of the light-emitting device can be a cathode, and the intermediate layer can further include an electron transport region between the emitting layer and the second electrode.

[0163] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof, and

[0164] The electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0165] In the implementation scheme, at least one of the hole transport region and the emitter layer may contain an arylamine-containing compound, an acridine-containing compound, a carbazole-containing compound, or any combination thereof, or

[0166] At least one of the emission layer and the electron transport region may contain a silicon-containing compound, a phosphine-containing compound, a sulfur-containing compound, a phosphorus-containing compound, a triazine-containing compound, a pyrimidine-containing compound, a pyridine-containing compound, a dibenzofuran-containing compound, a dibenzothiophene-containing compound, or any combination thereof.

[0167] In an embodiment, the light-emitting device may include: a first covering layer disposed outside the first electrode; a second covering layer disposed outside the second electrode; or a first covering layer and a second covering layer.

[0168] In the implementation scheme, at least one of the first capping layer and the second capping layer may each independently comprise a carbocyclic compound, a heterocyclic compound, a compound containing an amine group, a porphyrin derivative, a phthalocyanine derivative, a naphthyl phthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof.

[0169] According to another aspect, a light-emitting device is provided, comprising: a first electrode; a second electrode facing the first electrode; an intermediate layer between the first electrode and the second electrode; and a second cover layer disposed outside the second electrode and having a refractive index equal to or greater than about 1.6, wherein the intermediate layer may include an emitting layer and a hole transport region between the emitting layer and the first electrode, and the hole transport region may contain a first compound as described above.

[0170] In the implementation scheme, the encapsulation portion may be arranged on the second cover layer.

[0171] In an implementation scheme, the encapsulation portion may include: an inorganic film, said inorganic film comprising silicon nitride (SiN). x ), silicon oxide (SiO) x Indium tin oxide, indium zinc oxide, or any combination thereof; an organic membrane comprising polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acryloyl-based resin, epoxy-based resin, or any combination thereof; or a combination of inorganic and organic membranes.

[0172] In one embodiment, the first compound may be contained between a pair of electrodes of the light-emitting device. Therefore, the first compound may be contained in an intermediate layer of the light-emitting device, for example, in a hole transport region of the intermediate layer.

[0173] In an embodiment, the emitting layer in the intermediate layer of the light-emitting device may comprise a dopant and a host, and the first compound may be included in the host. In other words, the first compound may act as the host. The emitting layer may emit red, green, blue, and / or white light. For example, the emitting layer may emit blue light. Blue light may have a maximum emission wavelength of, for example, from about 400 nm to about 500 nm.

[0174] In the implementation, the emission layer may include a first emission layer, a second emission layer and a third emission layer with different emission colors, and the hole transport region may include a first emission auxiliary layer between the first electrode and the first emission layer, a second emission auxiliary layer between the first electrode and the second emission layer and a third emission auxiliary layer between the first electrode and the third emission layer, and at least one of the first emission auxiliary layer, the second emission auxiliary layer and the third emission auxiliary layer may contain a first compound.

[0175] In an embodiment, the light-emitting device may further include at least one of a first capping layer disposed outside the first electrode and a second capping layer disposed outside the second electrode, and the first compound may be contained in at least one of the first and second capping layers. Further details regarding the first and / or second capping layers are the same as described in the specification.

[0176] In an embodiment, the light-emitting device may include: a first capping layer disposed outside a first electrode and containing a first compound; a second capping layer disposed outside a second electrode and containing a first compound; or a first capping layer and a second capping layer.

[0177] As used herein, the expression "(intermediate layer) contains at least one first compound" can include cases where "(intermediate layer) contains one type of compound corresponding to the first compound" and cases where "(intermediate layer) contains two or more different compounds corresponding to the first compound".

[0178] In one embodiment, the intermediate layer may contain only compound 1 as the first compound. In this embodiment, compound 1 may be contained in the hole transport region of the light-emitting device. In another embodiment, the intermediate layer may contain both compound 1 and compound 2 as the first compound. In this respect, compound 1 and compound 2 may exist in the same layer (e.g., both compound 1 and compound 2 may exist in the hole transport region) or in different layers (e.g., compound 1 may exist in the emission layer and compound 2 may exist in the hole transport region).

[0179] As used herein, the term "intermediate layer" refers to a single layer or all layers located between the first and second electrodes of the light-emitting device.

[0180] According to another aspect, an electronic device including a light-emitting device is provided. The electronic device may further include a thin-film transistor. In an embodiment, the electronic device may further include a thin-film transistor comprising a source electrode and a drain electrode, and a first electrode of the light-emitting device may be electrically connected to the source electrode or the drain electrode. In an embodiment, the electronic device may further include a color filter, a color conversion layer, a touchscreen layer, a polarizing layer, or any combination thereof. Further details regarding the electronic device are the same as described in the specification.

[0181] [ Figure 1 [Description]

[0182] Figure 1 This is a schematic cross-sectional view of the light-emitting device 10 according to an embodiment. The light-emitting device 10 includes a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0183] In the following text, we will discuss... Figure 1 The structure of the light-emitting device 10 according to the embodiment and the method of manufacturing the light-emitting device 10 are described.

[0184] [First Electrode 110]

[0185] exist Figure 1In this embodiment, a substrate may be additionally disposed below the first electrode 110 or above the second electrode 150. The substrate may be a glass substrate or a plastic substrate. The substrate may be a flexible substrate. In embodiments, the substrate may comprise a plastic with excellent heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0186] The first electrode 110 can be formed, for example, by depositing or sputtering a material for forming the first electrode 110 onto a substrate. When the first electrode 110 is an anode, a high work function material that can be easily injected with holes can be used as the material for forming the first electrode 110.

[0187] The first electrode 110 can be a reflective electrode, a semi-transparent electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 can include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof. In an embodiment, when the first electrode 110 is a semi-transparent electrode or a reflective electrode, magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof can be used as the material for forming the first electrode 110.

[0188] The first electrode 110 may have a single-layer structure consisting of a single layer or a multi-layer structure comprising multiple layers. In an embodiment, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0189] [Middle Layer 130]

[0190] Intermediate layer 130 is located on first electrode 110. Intermediate layer 130 includes an emitter layer.

[0191] The intermediate layer 130 may further include a hole transport region disposed between the first electrode 110 and the emitter layer and an electron transport region disposed between the emitter layer and the second electrode 150.

[0192] In addition to various organic materials, the intermediate layer 130 may further contain metal-containing compounds (e.g., organometallic compounds), inorganic materials (e.g., quantum dots), etc.

[0193] In an embodiment, the intermediate layer 130 may include i) two or more emitting units sequentially stacked between the first electrode 110 and the second electrode 150, and ii) at least one charge generating layer located between adjacent emitting units. When the intermediate layer 130 includes emitting units as described above and at least one charge generating layer, the light-emitting device 10 may be a series light-emitting device.

[0194] [Hole transport region in intermediate layer 130]

[0195] Hole transport regions can have: i) a single-layer structure consisting of a single layer of a single material, ii) a single-layer structure consisting of a single layer containing different materials, or iii) a multi-layer structure including multiple layers containing different materials.

[0196] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

[0197] For example, the hole transport region may have a multilayer structure including a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission auxiliary layer structure, a hole injection layer / emission auxiliary layer structure, a hole transport layer / emission auxiliary layer structure, or a hole injection layer / hole transport layer / electron blocking layer structure, wherein, in each structure, the layers are stacked sequentially from the first electrode 110.

[0198] The hole transport region may contain a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0199] [Formula 201]

[0200]

[0201] [Formula 202]

[0202]

[0203] In equations 201 and 202,

[0204] L 201 To L 204 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0205] L 205 It can be *-O-*', *-S-*', or *-N(Q) 201 )-*', unsubstituted or by at least one R10a Replacement C1-C 20 alkylene groups, unsubstituted or with at least one R 10a Replacement C2-C 20 alkenyl groups, unsubstituted or with at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0206] xa1 to xa4 can each be an integer from 0 to 5 independently.

[0207] xa5 can be an integer from 1 to 10.

[0208] R 201 To R 204 and Q 201 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0209] R 201 and R 202 It can be optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form unsubstituted or substituted groups with at least one R group. 10a Replacement C8-C 60 Polycyclic groups (e.g., carbazole groups) (e.g., see compound HT16, etc.),

[0210] R 203 and R 204 It can be optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form unsubstituted or substituted groups with at least one R group. 10a Replacement C8-C 60 Polycyclic groups, and

[0211] na1 can be an integer from 1 to 4.

[0212] In the embodiments, formulas 201 and 202 may each contain at least one of the groups represented by formulas CY201 to CY217:

[0213]

[0214] Regarding formulas CY201 to CY217, R 10b and R 10c Regarding R 10a The descriptions are the same, CY ring 201 To CY 204 Each can be C3-C independently. 20 Carbocyclic groups or C1-C 20 Heterocyclic groups, and at least one hydrogen atom in formulas CY201 to CY217 may be unsubstituted or substituted by at least one R described herein. 10a replace.

[0215] In the implementation plan, the ring CY in formulas CY201 to CY217 201 To CY 204 Each group can be an independent phenyl group, naphthol group, phenanthrene group, or anthracene group.

[0216] In the embodiments, Formula 201 and Formula 202 may each contain at least one of the groups represented by Formula CY201 to Formula CY203.

[0217] In an embodiment, formula 201 may include at least one of the groups represented by formulas CY201 to CY203 and at least one of the groups represented by formulas CY204 to CY217.

[0218] In the implementation scheme, in equation 201, xa1 is 1, and R 201 It is a group represented by one of the formulas CY201 to CY203, where xa2 is 0, and R 202 It is a group represented by one of the formulas CY204 to CY207.

[0219] In the implementation scheme, each of Formulas 201 and 202 may not contain a group represented by Formulas CY201 to CY203.

[0220] In the embodiments, each of Formulas 201 and 202 may not contain a group represented by Formulas CY201 to CY203, but may contain at least one of the groups represented by Formulas CY204 to CY217.

[0221] In the implementation scheme, each of Formula 201 and Formula 202 may not contain a group represented by Formula CY201 to Formula CY217.

[0222] For example, the hole transport region may contain one or any combination of the following compounds HT1 to HT45, 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), and polyaniline / poly(4-styrenesulfonate) (PANI / PSS):

[0223]

[0224]

[0225]

[0226]

[0227]

[0228] The thickness of the hole transport region can be approximately to approximately For example, the thickness of the hole transport region can be approximately to approximately When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer can be approximately to approximately Furthermore, the thickness of the hole transport layer can be approximately to approximately For example, the thickness of the hole injection layer can be approximately to approximately For example, the thickness of the hole transport layer can be approximately 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.

[0229] The emission assist layer can increase 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 the flow of electrons from the electron transport region. The emission assist layer and the electron blocking layer can contain materials as described above.

[0230] [p-dopant]

[0231] In addition to these materials, the hole transport region may further contain charge-generating materials to improve conductivity. The charge-generating materials may be uniformly or non-uniformly dispersed in the hole transport region (e.g., in the form of a single layer of charge-generating materials).

[0232] The charge-generating material can be, for example, a p-doped agent.

[0233] In the implementation, the lowest unoccupied molecular orbital (LUMO) energy level of the p-dopant can be equal to or less than about -3.5 eV.

[0234] In the embodiments, the p-dopant may include quinone derivatives, compounds containing cyano groups, compounds containing elements EL1 and EL2, or any combination thereof.

[0235] Examples of quinone derivatives may include TCNQ and F4-TCNQ.

[0236] Examples of compounds containing a cyano group may include HAT-CN and compounds represented by the following formula 221.

[0237]

[0238] [Equation 221]

[0239]

[0240] In Equation 221,

[0241] R 221 To R 223 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0242] R 221 To R 223 At least one of them can be independently a C1-C group substituted with: a cyano group; -F; -Cl; -Br; -I; or any combination thereof. 20 Alkyl groups; or C3-C groups substituted with any combination thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups.

[0243] Regarding compounds containing elements EL1 and EL2, element EL1 can be a metal, a metalloid, or a combination thereof, and element EL2 can be a nonmetal, a metalloid, or a combination thereof.

[0244] Examples of metals may include: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt. (Co, Rhodium (Rh), Iridium (Ir), Nickel (Ni), Palladium (Pd), Platinum (Pt), Copper (Cu), Silver (Ag), Gold (Au), etc.); Post-transition metals (e.g., Zinc (Zn), Indium (In), Tin (Sn), etc.); and Lanthanides (e.g., Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), etc.).

[0245] Examples of metalloids can include silicon (Si), antimony (Sb), and tellurium (Te).

[0246] Examples of nonmetals can include oxygen (O) and halogens (e.g., F, Cl, Br, I, etc.).

[0247] In the embodiments, examples of compounds containing elements EL1 and EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, or metal iodides), quasi-metal halides (e.g., quasi-metal fluorides, quasi-metal chlorides, quasi-metal bromides, or quasi-metal iodides), metal tellurides, or any combination thereof.

[0248] Examples of metal oxides may include tungsten oxides (e.g., WO, W2O3, WO2, WO3, or W2O5), vanadium oxides (e.g., VO, V2O3, VO2, or V2O5), molybdenum oxides (e.g., MoO, Mo2O3, MoO2, MoO3, or Mo2O5), and rhenium oxides (e.g., ReO3).

[0249] Examples of metal halides can include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

[0250] Examples of alkali metal halides may include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and CsI.

[0251] Examples of alkaline earth metal halide compounds may include BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2, and BaI2.

[0252] Examples of transition metal halides may include titanium halides (e.g., TiF4, TiCl4, TiBr4, or TiI4), zirconium halides (e.g., ZrF4, ZrCl4, ZrBr4, or ZrI4), hafnium halides (e.g., HfF4, HfCl4, HfBr4, or HfI4), vanadium halides (e.g., VF3, VCl3, VBr3, or VI3), niobium halides (e.g., NbF3, NbCl3, NbBr3, or NbI3), and tantalum halides (e.g., TaF3, TaCl3, ...). TaBr3 or TaI3), chromium halides (e.g., CrF3, CrCl3, CrBr3 or CrI3), molybdenum halides (e.g., MoF3, MoCl3, MoBr3 or MoI3), tungsten halides (e.g., WF3, WCl3, WBr3 or WI3), manganese halides (e.g., MnF2, MnCl2, MnBr2 or MnI2), technetium halides (e.g., TcF2, TcCl2, TcBr2 or TcI2), rhenium halides (e.g., ReF2, ReCl2, ReB2). Rh2 or ReI2), iron halides (e.g., FeF2, FeCl2, FeBr2 or FeI2), ruthenium halides (e.g., RuF2, RuCl2, RuBr2 or RuI2), osmium halides (e.g., OsF2, OsCl2, OsBr2 or OsI2), cobalt halides (e.g., CoF2, CoCl2, CoBr2 or CoI2), rhodium halides (e.g., RhF2, RhCl2, RhBr2 or RhI2), iridium halides (e.g., IrF2, IrCl2, I... (e.g., rBr2 or IrI2), nickel halides (e.g., NiF2, NiCl2, NiBr2 or NiI2), palladium halides (e.g., PdF2, PdCl2, PdBr2 or PdI2), platinum halides (e.g., PtF2, PtCl2, PtBr2 or PtI2), copper halides (e.g., CuF, CuCl, CuBr or CuI), silver halides (e.g., AgF, AgCl, AgBr or AgI), and gold halides (e.g., AuF, AuCl, AuBr or AuI).

[0253] Examples of post-transition metal halides may include zinc halides (e.g., ZnF2, ZnCl2, ZnBr2, or ZnI2), indium halides (e.g., InI3), and tin halides (e.g., SnI2).

[0254] Examples of lanthanide metal halides may include YbF, YbF2, YbF3, SmF3, YbCl, YbCl2, YbCl3, SmCl3, YbBr, YbBr2, YbBr3, SmBr3, YbI, YbI2, YbI3, and SmI3.

[0255] Examples of metal halide quasi-metal halides can include antimony halides (e.g., SbCl5).

[0256] Examples of metal tellurides can include alkali metal tellurides (e.g., Li₂Te, Na₂Te, K₂Te, Rb₂Te, or Cs₂Te), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe, or BaTe), and transition metal tellurides (e.g., TiTe₂, ZrTe₂, HfTe₂, V₂Te₃, Nb₂Te₃, Ta₂Te₃, Cr₂Te₃, Mo₂Te₃, W₂Te₃, MnTe, TcTe, ReTe). FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu2Te, CuTe, Ag2Te, AgTe or Au2Te), post-transition metal tellurides (e.g., ZnTe) and lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe or LuTe).

[0257] [Emitting layer in intermediate layer 130]

[0258] When the light-emitting device 10 is a full-color light-emitting device, the emitting layer can be patterned into a red emitting layer, a green emitting layer, and / or a blue emitting layer, depending on the sub-pixel. In an embodiment, the emitting layer may have a stacked structure of two or more layers selected from red, green, and blue emitting layers, wherein the two or more layers are in contact with or separated from each other to emit white light. In an embodiment, the emitting layer may contain two or more materials selected from red-emitting, green-emitting, and blue-emitting materials, wherein the two or more materials are mixed with each other in a single layer to emit white light.

[0259] The emitting layer may comprise a host and dopants. Dopants may include phosphorescent dopants, fluorescent dopants, or any combination thereof.

[0260] Based on 100 parts by weight of the host, the amount of dopant in the emitter layer can be from about 0.01 parts by weight to about 15 parts by weight.

[0261] In the implementation scheme, the emitter layer may contain quantum dots.

[0262] The emission layer may contain delayed fluorescence material. The delayed fluorescence material can act as either the host or a dopant in the emission layer.

[0263] The thickness of the emission layer can be approximately to approximately For example, the thickness of the emission layer can be approximately to approximately When the thickness of the emitting layer is within this range, excellent light emission characteristics can be obtained without a significant increase in driving voltage.

[0264] [main body]

[0265] The main body may include a compound represented by the following formula 301:

[0266] [Formula 301]

[0267] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 .

[0268] In Equation 301,

[0269] Ar 301 and L 301 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0270] xb11 can be 1, 2, or 3.

[0271] xb1 can be an integer from 0 to 5.

[0272] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 alkenyl groups, unsubstituted or with at least one R 10a Replacement C2-C60 The alkynyl group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) or -P(=O)(Q 301 (Q) 302 ),

[0273] xb21 can be an integer from 1 to 5, and

[0274] Q 301 To Q 303 Same as the description regarding Q1.

[0275] In the implementation scheme, when xb11 in formula 301 is 2 or greater than 2, two or more Ar 301 They can be connected to each other via a single key.

[0276] In the implementation scheme, the main body may include a compound represented by formula 301-1, a compound represented by formula 301-2, or any combination thereof:

[0277] [Formula 301-1]

[0278]

[0279] [Formula 301-2]

[0280]

[0281] In Equations 301-1 and 301-2,

[0282] Ring A 301 To Ring A 304 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0283] X 301 It can be O, S, N-[(L 304 ) xb4 -R 304 ]、C(R 304 (R) 305 ) or Si(R 304 (R) 305 ),

[0284] xb22 and xb23 can each be 0, 1, or 2 independently.

[0285] L 301 xb1 and R 301 Same as described in the instruction manual.

[0286] L 302 To L 304 Each independently and about L 301 The descriptions are the same.

[0287] xb2 to xb4 are each independently identical to the description of xb1, and

[0288] R 302 To R 305 and R 311 To R 314 Regarding R 301 The descriptions are the same.

[0289] In the embodiments, the main component may include alkaline earth metal complexes. In the embodiments, the main component may include Be complexes (e.g., compound H55), Mg complexes, Zn complexes, or any combination thereof.

[0290] In the embodiments, the main body may include one or any combination of the following compounds H1 to H128, 9,10-bis(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN), 9,10-bis-(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), 1,3-bis(carbazolyl-9-yl)benzene (mCP), and 1,3,5-tris(carbazolyl-9-yl)benzene (TCP):

[0291]

[0292]

[0293]

[0294]

[0295]

[0296]

[0297] [Phosphorescent dopant]

[0298] Phosphorescent dopants may contain at least one transition metal as the center metal.

[0299] Phosphorescent dopants may include monodentate ligands, dipentate ligands, tridentate ligands, tetradentate ligands, pentadentate ligands, hexadentate ligands, or any combination thereof.

[0300] Phosphorescent dopants can be electrically neutral.

[0301] In the implementation scheme, the phosphorescent dopant may include an organometallic compound represented by formula 401:

[0302] [Formula 401]

[0303] M(L 401 ) xc1 (L 402 ) xc2

[0304] [Formula 402]

[0305]

[0306] In Equations 401 and 402,

[0307] M can be a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)).

[0308] L 401 The ligand can be represented by Equation 402, and xc1 can be 1, 2, or 3, wherein when xc1 is 2 or greater than 2, there are two or more L... 401 They can be the same or different from each other.

[0309] L 402 It can be an organic ligand, and xc2 can be 0, 1, 2, 3, or 4, wherein when xc2 is 2 or greater than 2, there are two or more L... 402 They can be the same or different from each other.

[0310] X 401 and X 402 It can be either nitrogen or carbon, each independently.

[0311] Ring A 401 And Ring A 402Each can be C3-C independently. 60 Carbocyclic groups or C1-C 60 Heterocyclic groups,

[0312] T 401 It can be a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q) 411 )-*'、*-C(Q 411 (Q) 412 )-*'、*-C(Q 411 )=C(Q 412 )-*'、*-C(Q 411 ) = *' or * = C = *',

[0313] X 403 and X 404 These can be chemical bonds (e.g., covalent or coordinate bonds), O, S, N (Q) independently. 413 ), B(Q) 413 ), P(Q 413 ), C(Q 413 (Q) 414 ) or Si(Q 413 (Q) 414 ),

[0314] Q 411 To Q 414 Same as the description of Q1 in the instruction manual.

[0315] R 401 and R 402 Each of these groups can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 20 alkyl groups, unsubstituted or with at least one R 10a Replacement C1-C 20 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 401 (Q) 402 (Q) 403 -N(Q) 401 (Q) 402 -B(Q) 401 (Q) 402 -C(=O)(Q) 401 -S(=O)2(Q) 401) or -P(=O)(Q 401 (Q) 402 ),

[0316] Q 401 To Q 403 Same as the description of Q1 in the instruction manual.

[0317] xc11 and xc12 can each be an integer from 0 to 10 independently, and

[0318] In Equation 402, * and *' each represent the binding site with M in Equation 401.

[0319] In the implementation scheme, in formula 402, i)X 401 It can be nitrogen, and X 402 It can be carbon, or ii)X 401 and X 402 Both can be nitrogen.

[0320] In the implementation scheme, when xc1 in equation 401 is 2 or greater than 2, two or more L 401 The two rings A in 401 It can be optionally via T as a linking group 402 Connected to each other, or two or more L's 401 The two rings A in 402 It can be optionally via T as a linking group 403 They are interconnected (see compounds PD1 through PD4 and PD7). T 402 and T 403 According to the instruction manual regarding T 401 The descriptions are the same.

[0321] L in Equation 401 402 It can be an organic ligand. For example, L... 402 It may include halogen groups, diketone groups (e.g., acetylacetonate groups), carboxylic acid groups (e.g., pyridine carboxylate groups), -C (=O), isonitrile groups, -CN groups, phosphorus groups (e.g., phosphine groups and phosphite groups) or any combination thereof.

[0322] Phosphorescent dopants may include, for example, one or any combination of the following compounds PD1 to PD25:

[0323]

[0324] [Fluorescent dopant]

[0325] Fluorescent dopants may include compounds containing amine groups, compounds containing styrene groups, or any combination thereof.

[0326] In an embodiment, the fluorescent dopant may include a compound represented by formula 501:

[0327] [Formula 501]

[0328]

[0329] In Equation 501,

[0330] Ar 501 L 501 To L 503 R 501 and R 502 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0331] xd1 to xd3 can each be independently 0, 1, 2, or 3, and

[0332] xd4 can be 1, 2, 3, 4, 5, or 6.

[0333] In the implementation scheme, Ar in Formula 501 501 It can be a fused cyclic group consisting of three or more monocyclic groups (e.g., anthracene group, ...). (group or pyrene group).

[0334] In the implementation scheme, xd4 in formula 501 can be 2.

[0335] In the embodiments, the fluorescent dopant may include: one of compounds FD1 to FD36; DPVBi; DPAVBi; or any combination thereof:

[0336]

[0337]

[0338]

[0339] [Delayed fluorescence materials]

[0340] The emission layer may contain delayed fluorescence material.

[0341] The delayed fluorescence material used in this article can be selected from any compound that can emit delayed fluorescence light based on the delayed fluorescence emission mechanism.

[0342] Depending on the type of other materials contained in the emission layer, the delayed fluorescence material contained in the emission layer can act as either a host or a dopant.

[0343] In the embodiment, the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material can be from about 0 eV to about 0.5 eV. When the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material satisfies the range described above, an upconversion from the triplet state to the singlet state of the delayed fluorescent material can occur effectively, and thus the light emission efficiency of the light-emitting device 10 can be improved.

[0344] In the embodiments, the delayed fluorescence material may include i) containing at least one electron donor (e.g., a π-electron-rich C3-C3). 60 Cyclic groups (e.g., carbazole groups) and at least one electron acceptor (e.g., sulfoxide groups, cyano groups, or C1-C groups containing nitrogen lacking π electrons). 60 ii) Materials containing two or more cyclic groups sharing boron (B) and fused together with each other, of which are C8-C 60 Materials with polycyclic groups.

[0345] Delayed fluorescence materials may include at least one of compounds DF1 to DF9:

[0346]

[0347] [Quantum dot]

[0348] The emitter layer can contain quantum dots.

[0349] The quantum dot used in this article refers to a crystal of a semiconductor compound, and can include any material capable of emitting light of various wavelengths depending on the size of the crystal.

[0350] The diameter of a quantum dot can be, for example, from about 1 nm to about 10 nm.

[0351] Quantum dots can be synthesized through wet chemical processes, metal-organic chemical vapor deposition, molecular beam epitaxy, or similar processes.

[0352] Wet chemical processes refer to methods in which organic solvents and precursor materials are mixed and quantum dot crystals are grown. During crystal growth, the organic solvent acts as a dispersant that naturally coordinates to the surface of the quantum dot crystals and controls the crystal growth. Therefore, the growth of quantum dot particles can be controlled using processes that are easier and less expensive to perform compared to vapor deposition processes such as metal-organic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE).

[0353] Quantum dots can include group III-VI semiconductor compounds, group II-VI semiconductor compounds, group III-V semiconductor compounds, group I-III-VI semiconductor compounds, group IV-VI semiconductor compounds, group IV elements or compounds, or any combination thereof.

[0354] Examples of group II-VI semiconductor compounds may include: binary compounds, such as CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, or MgS; ternary compounds, such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, or MgZnS; quaternary compounds, such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, or HgZnSTe; or any combination thereof.

[0355] Examples of group III-V semiconductor compounds may include: binary compounds, such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, or InSb; ternary compounds, such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, or InPSb; quaternary compounds, such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, or InAlPSb; or any combination thereof. Group III-V semiconductor compounds may further contain group II elements. Examples of further group III-V semiconductor compounds containing group II elements may include InZnP, InGaZnP, or InAlZnP.

[0356] Examples of III-VI semiconductor compounds may include: binary compounds, such as GaS, GaSe, Ga2Se3, GaTe, InS, In2S3, InSe, In2Se3 or InTe; ternary compounds, such as InGaS3 or InGaSe3; or any combination thereof.

[0357] Examples of group I-III-VI semiconductor compounds are ternary compounds, such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2, or AgAlO2; or any combination thereof.

[0358] Examples of group IV-VI semiconductor compounds are binary compounds, such as SnS, SnSe, SnTe, PbS, PbSe, or PbTe; ternary compounds, such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, or SnPbTe; quaternary compounds, such as SnPbSSe, SnPbSeTe, or SnPbSTe; or any combination thereof.

[0359] In the implementation scheme, group IV elements or compounds may include single elements, such as Si or Ge; binary compounds, such as SiC or SiGe; or any combination thereof.

[0360] Each element contained in a multi-element compound (e.g., binary, ternary, and quaternary compounds) may exist in the particles at a uniform or non-uniform concentration.

[0361] Quantum dots can have either a single structure with a uniform concentration of each element contained within the corresponding quantum dot, or a core-shell dual structure. In some embodiments, the material contained in the core can be different from the material contained in the shell.

[0362] The shell of a quantum dot can function as a protective layer to maintain semiconductor properties by preventing the chemical degradation of the nucleus, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be a single layer or multiple layers. The interface between the nucleus and the shell can have a concentration gradient, where the concentration of elements present in the shell decreases towards the center.

[0363] Examples of the shell for quantum dots are oxides of metals or nonmetals, semiconductor compounds, or any combination thereof. Examples of oxides of metals or nonmetals may include binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, or NiO; ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, or CoMn2O4; or any combination thereof. Examples of semiconductor compounds as described herein are group III-VI semiconductor compounds, group II-VI semiconductor compounds, group III-V semiconductor compounds, group I-III-VI semiconductor compounds, group IV-VI semiconductor compounds, or any combination thereof. In the embodiments, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0364] The full width at half maximum (FWHM) of the emission wavelength spectrum of quantum dots can be equal to or less than about 45 nm. For example, the FWHM of the emission wavelength spectrum of quantum dots can be equal to or less than about 40 nm. For example, the FWHM of the emission wavelength spectrum of quantum dots can be equal to or less than about 30 nm. When the FWHM of the emission wavelength spectrum of quantum dots is within this range, color purity or color reproducibility can be improved. Light emitted through such quantum dots can illuminate omnidirectionally. Therefore, a wide viewing angle can be increased.

[0365] Quantum dots can be spherical, pyramidal, multi-armed, or cubic nanoparticles, nanotubes, nanowires, nanofibers, or nanoplate particles.

[0366] By adjusting the size of the quantum dots, the band gap can also be adjusted, thereby obtaining light of various wavelengths in the quantum dot emission layer. Therefore, by using quantum dots of different sizes, light-emitting devices that emit light of various wavelengths can be realized. In this embodiment, the size of the quantum dots can be selected to emit red, green, and / or blue light. The size of the quantum dots can be adjusted so that various colors of light can be combined to emit white light.

[0367] [Electron transport region in intermediate layer 130]

[0368] The electron transport region can have: i) a single-layer structure consisting of a single layer of a single material, ii) a single-layer structure consisting of a single layer of different materials, or iii) a multi-layer structure including multiple layers containing different materials.

[0369] The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0370] In the implementation scheme, the electron transport region may have an electron transport layer / electron injection layer structure, a hole blocking layer / electron transport layer / electron injection layer structure, an electron control layer / electron transport layer / electron injection layer structure, or a buffer layer / electron transport layer / electron injection layer structure, wherein for each structure, the constituent layers are stacked sequentially from the emission layer.

[0371] The electron transport region (e.g., a buffer layer, hole blocking layer, electron control layer, or electron transport layer within the electron transport region) may contain C1-C atoms with at least one π-electron-deficient nitrogen atom. 60 Metal-free compounds with cyclic groups.

[0372] In an implementation, the electron transport region may comprise a compound represented by the following formula 601:

[0373] [Formula 601]

[0374] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 .

[0375] In Equation 601,

[0376] Ar 601 and L 601 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups,

[0377] xe11 can be 1, 2, or 3.

[0378] xe1 can be 0, 1, 2, 3, 4, or 5.

[0379] R 601 It can be unsubstituted or replaced by at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 601 (Q) 602 (Q) 603 -C(=O)(Q) 601 -S(=O)2(Q)601 ) or -P(=O)(Q 601 (Q) 602 ),

[0380] Q 601 To Q 603 Same as described regarding Q1,

[0381] xe21 can be 1, 2, 3, 4, or 5, and

[0382] Ar 601 L 601 and R 601 At least one of them can be independently unsubstituted or by at least one R. 10a Substituted C1-C nitrogen containing π-electron-deficient nitrogen 60 Cyclic groups.

[0383] In the implementation scheme, when xe11 in formula 601 is 2 or greater than 2, two or more Ar 601 They can be connected to each other via a single key.

[0384] In the implementation scheme, Ar in Formula 601 601 It can be a substituted or unsubstituted anthracene group.

[0385] In the implementation scheme, the electron transport region may comprise a compound represented by formula 601-1:

[0386] [Formula 601-1]

[0387]

[0388] In Equation 601-1,

[0389] X 614 It can be N or C(R) 614 ), X 615 It can be N or C(R) 615 ), X 616 It can be N or C(R) 616 ), and X 614 To X 616 At least one of them can be N,

[0390] L 611 To L 613 You can refer to L 601 To understand from the presented description,

[0391] xe611 to xe613 can be understood by referring to the description of xe1 presentation.

[0392] R 611 To R 613You can refer to information about R 601 To understand from the presented description, and

[0393] R 614 To R 616 Each of these can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 20 Alkyl groups, C1-C 20 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups.

[0394] In the implementation scheme, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 can each be 0, 1 or 2 independently.

[0395] The electron transport region may contain one or any combination of the following compounds ET1 to ET45, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq3, BAlq, TAZ, and NTAZ:

[0396]

[0397]

[0398] The thickness of the electron transport region can be approximately to approximately For example, the thickness of the electron transport region can be approximately to approximately When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, hole blocking layer, or electron control layer can be independently approximately [missing information]. to approximately Furthermore, the thickness of the electron transport layer can be approximately to approximately For example, the thickness of the buffer layer, hole blocking layer, or electronic control layer can each be approximately [missing information]. to approximately For example, the thickness of the electron transport layer can be approximately to approximately When the thicknesses of the buffer layer, hole blocking layer, electronic control layer, electron transport layer, and / or electron transport region are within these ranges, satisfactory electron transport characteristics can be obtained without a significant increase in driving voltage.

[0399] In addition to the materials described above, the electron transport region (e.g., the electron transport layer in the electron transport region) may further contain a metallic material.

[0400] Materials containing metals may include alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The metal ion in an alkali metal complex may be Li, Na, K, Rb, or Cs ions, and the metal ion in an alkaline earth metal complex may be Be, Mg, Ca, Sr, or Ba ions. The ligand coordinating with the metal ion in the alkali metal or alkaline earth metal complex may be hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof.

[0401] In this embodiment, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (LiQ) or compound ET-D2:

[0402]

[0403] The electron transport region may include an electron injection layer that facilitates the injection of electrons from the second electrode 150. The electron injection layer may be in direct contact with the second electrode 150.

[0404] The electron injection layer can have: i) a monolayer structure consisting of a single layer composed of a single material, ii) a monolayer structure consisting of a single layer containing different materials, or iii) a multilayer structure comprising multiple layers containing different materials.

[0405] The electron injection layer may contain alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof.

[0406] Alkali metals may include Li, Na, K, Rb, Cs, or any combination thereof. Alkali earth metals may include Mg, Ca, Sr, Ba, or any combination thereof. Rare earth metals may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0407] Compounds containing alkali metals, alkaline earth metals, and rare earth metals can be oxides and halides of alkali metals, alkaline earth metals, and rare earth metals (e.g., fluorides, chlorides, bromides, or iodides), tellurides, or any combination thereof.

[0408] The alkali metal-containing compound can be an alkali metal oxide (such as Li2O, Cs2O or K2O) and an alkali metal halide (such as LiF, NaF, CsF, KF, LiI, NaI, CsI or KI) or any combination thereof. The alkaline earth metal-containing compound can include alkaline earth metal compounds, such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying the condition 0 < x < 1) or Ba x Ca 1-x O (where x is a real number satisfying the condition 0 < x < 1). The rare earth metal-containing compound can include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3 or any combination thereof. In an embodiment, the rare earth metal-containing compound can include lanthanide metal tellurides. Examples of lanthanide metal tellurides are LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La2Te3, Ce2Te3, Pr2Te3, Nd2Te3, Pm2Te3, Sm2Te3, Eu2Te3, Gd2Te3, Tb2Te3, Dy2Te3, Ho2Te3, Er2Te3, Tm2Te3, Yb2Te3 and Lu2Te3.

[0409] The alkali metal complex, alkaline earth metal complex and rare earth metal complex can contain i) one of the ions of alkali metal, alkaline earth metal and rare earth metal, and ii) ligands attached to the metal ion, such as hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyl oxazole, hydroxyphenyl thiazole, hydroxyphenyl oxadiazole, hydroxyphenyl thiadiazole, hydroxyphenyl pyridine, hydroxyphenyl benzimidazole, hydroxyphenyl benzothiazole, bipyridine, phenanthroline, cyclopentadiene or any combination thereof.

[0410] The electron injection layer can be composed of: alkali metal, alkaline earth metal, rare earth metal, alkali metal-containing compound, alkaline earth metal-containing compound, rare earth metal-containing compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex or any combination thereof, or can further contain an organic material (for example, a compound represented by formula 601).

[0411] In an embodiment, the electron injection layer can be composed of: i) an alkali metal-containing compound (for example, an alkali metal halide), or ii) a) an alkali metal-containing compound (for example, an alkali metal halide); and b) an alkali metal, alkaline earth metal, rare earth metal or any combination thereof. In an embodiment, the electron injection layer can be a KI:Yb co-deposited layer or a RbI:Yb co-deposited layer.

[0412] When the electron injection layer further contains organic materials, alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof can be uniformly or non-uniformly dispersed in the matrix containing organic materials.

[0413] The thickness of the electron injection layer can be approximately to approximately For example, the thickness of the electron injection layer can be approximately to approximately When the thickness of the electron injection layer is within the range described above, the electron injection layer can have satisfactory electron injection characteristics without a significant increase in driving voltage.

[0414] [Second electrode 150]

[0415] The second electrode 150 may be located on the intermediate layer 130 having such a structure. The second electrode 150 may be a cathode serving as an electron injection electrode, and may be made of metals, alloys, conductive compounds, or any combination thereof, each having a low work function, as materials for forming the second electrode 150.

[0416] The second electrode 150 may contain lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, or any combination thereof. The second electrode 150 may be a transmission electrode, a semi-transmission electrode, or a reflection electrode.

[0417] The second electrode 150 may have a single-layer structure or a multi-layer structure including two or more layers.

[0418] [Overlay]

[0419] The first cover layer may be located outside the first electrode 110, and / or the second cover layer may be located outside the second electrode 150. The light-emitting device 10 may have a structure in which the first cover layer, the first electrode 110, the intermediate layer 130, and the second electrode 150 are stacked in a predetermined order, or in which the first cover layer, the first electrode 110, the intermediate layer 130, the second electrode 150, and the second cover layer are stacked in a predetermined order.

[0420] Light generated in the emitting layer of the intermediate layer 130 of the light-emitting device 10 can be emitted outward through the first electrode 110 (which is a semi-transparent electrode or a transmissive electrode) and the first cover layer, and light generated in the emitting layer of the intermediate layer 130 of the light-emitting device 10 can be emitted outward through the second electrode 150 (which is a semi-transparent electrode or a transmissive electrode) and the second cover layer.

[0421] The first and second capping layers can increase the external light emission efficiency based on the principle of constructive interference. Therefore, the light emission efficiency of the light-emitting device 10 is increased, thereby improving the light emission efficiency of the light-emitting device 10.

[0422] The first and second capping layers may each contain a material having a refractive index equal to or greater than about 1.6 (at 589 nm).

[0423] The first and second covering layers can each be independently an organic covering layer containing organic materials, an inorganic covering layer containing inorganic materials, or a composite covering layer containing both organic and inorganic materials.

[0424] At least one of the first and second capping layers may independently comprise a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthylphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, heterocyclic compound, and amine-containing compound may optionally be substituted with substituents containing O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In an embodiment, at least one of the first and second capping layers may independently comprise an amine-containing compound.

[0425] In the implementation scheme, at least one of the first capping layer and the second capping layer may each independently contain a compound represented by formula 201, a compound represented by formula 202, or any combination thereof.

[0426] In the implementation scheme, at least one of the first capping layer and the second capping layer may each independently contain one of compounds HT28 to HT33, one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0427]

[0428] [Electronic Devices]

[0429] The light-emitting device can be included in various electronic devices. In this embodiment, the electronic device including the light-emitting device can be a light-emitting device, a verification device, etc.

[0430] In addition to the light-emitting device, the electronic device (e.g., the light-emitting device) may further include a color filter, a color conversion layer, or a color filter and a color conversion layer. The color filter and / or color conversion layer may be located in at least one direction of travel of the light emitted from the light-emitting device. In embodiments, the light emitted from the light-emitting device may be blue light or white light. The light-emitting device may be the same as described above. In embodiments, the color conversion layer may comprise quantum dots. The quantum dots may be, for example, as described herein.

[0431] An electronic device may include a first substrate. The first substrate may include sub-pixels, color filters may include color filter regions corresponding to the sub-pixels, and color conversion layers may include color conversion regions corresponding to the sub-pixels.

[0432] A pixel-defining membrane can be located between sub-pixels to define each of the sub-pixels.

[0433] The color filter may further include a color filter region and a light-blocking pattern located between the color filter region, and the color conversion layer may further include a color conversion region and a light-blocking pattern located between the color conversion regions.

[0434] The color filter region (or color conversion region) may include a first region emitting a first color light, a second region emitting a second color light, and / or a third region emitting a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths from each other. In an embodiment, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. In an embodiment, the color filter region (or color conversion region) may contain quantum dots. The first region may contain red quantum dots, the second region may contain green quantum dots, and the third region may not contain quantum dots. The quantum dots are the same as those described in the specification. Each of the first, second, and / or third regions may further contain a scatterer.

[0435] In one embodiment, the light-emitting device can emit first light, a first region can absorb the first light to emit a first first color light, a second region can absorb the first light to emit a second first color light, and a third region can absorb the first light to emit a third first color light. In this respect, the first, second, and third first color lights can have different maximum emission wavelengths from each other. The first light can be blue light, the first first color light can be red light, the second first color light can be green light, and the third first color light can be blue light.

[0436] In addition to the light-emitting device described above, the electronic device may further include a thin-film transistor. The thin-film transistor may include a source electrode, a drain electrode, and an active layer, wherein either the source electrode or the drain electrode may be electrically connected to either the first electrode or the second electrode of the light-emitting device.

[0437] Thin-film transistors may further include gate electrodes, gate insulating layers, etc.

[0438] The active layer can contain crystalline silicon, amorphous silicon, organic semiconductors, oxide semiconductors, etc.

[0439] The electronic device may further include a sealing portion for sealing the light-emitting device. The sealing portion may be located between the color filter and / or color conversion layer and the light-emitting device. The sealing portion allows light from the light-emitting device 10 to be emitted to the outside while simultaneously preventing ambient air and moisture from penetrating into the light-emitting device 10. The sealing portion may be a sealing substrate comprising a transparent glass substrate or a plastic substrate. The sealing portion may be a thin-film encapsulation layer comprising one or more organic layers and / or one or more inorganic layers. When the sealing portion is a thin-film encapsulation layer, the electronic device may be flexible.

[0440] In addition to color filters and / or color conversion layers, various functional layers may be further positioned on the sealing portion, depending on the application of the electronic device. Examples of functional layers may include a touchscreen layer, a polarization layer, etc. The touchscreen layer may be a pressure-sensitive touchscreen layer, a capacitive touchscreen layer, or an infrared touchscreen layer. The verification device may be, for example, a biometric verification device for verifying an individual using biometric information from a biometric body (e.g., fingertip, pupil, etc.).

[0441] In addition to the light-emitting device, the verification device may further include a biometric information collector.

[0442] Electronic devices can be used in various displays, light sources, lighting equipment, 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 displays, ultrasound diagnostic devices, or endoscope displays), fish finders, various measuring instruments, meters (e.g., instruments for vehicles, aircraft, and ships), projectors, etc.

[0443] [ Figure 2 and Figure 3 [Description]

[0444] Figure 2 This is a schematic cross-sectional view illustrating a light-emitting device according to an embodiment of the present disclosure; and

[0445] Figure 2The light-emitting device includes a substrate 100, a thin-film transistor (TFT), a light-emitting device, and a package 300 that seals the light-emitting device.

[0446] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer 210 may be located on the substrate 100. The buffer layer 210 prevents impurities from penetrating through the substrate 100 and may provide a flat surface on the substrate 100.

[0447] The TFT can be located on the buffer layer 210. The TFT may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0448] The active layer 220 may contain inorganic semiconductors (such as silicon or polysilicon), organic semiconductors or oxide semiconductors, and may include source region, drain region and channel region.

[0449] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 may be located on the active layer 220, and the gate electrode 240 may be located on the gate insulating film 230.

[0450] An intermediate insulating film 250 may be located on the gate electrode 240. The intermediate insulating film 250 is located between the gate electrode 240 and the source electrode 260 to insulate the gate electrode 240 from the source electrode 260, and is located between the gate electrode 240 and the drain electrode 270 to insulate the gate electrode 240 from the drain electrode 270.

[0451] The source electrode 260 and the drain electrode 270 may be located on the intermediate insulating film 250. The intermediate insulating film 250 and the gate insulating film 230 may be formed to expose the source and drain regions of the active layer 220, and the source electrode 260 and the drain electrode 270 may be positioned to contact the exposed portions of the source and drain regions of the active layer 220.

[0452] The TFT can be electrically connected to a light-emitting device to drive the light-emitting device, and can be covered by a passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or a combination thereof. A light-emitting device may be provided on the passivation layer 280. The light-emitting device includes a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0453] The first electrode 110 may be located on the passivation layer 280. The passivation layer 280 may not completely cover the drain electrode 270 and may expose a portion of the drain electrode 270, and the first electrode 110 may be connected to the exposed portion of the drain electrode 270.

[0454] A pixel defining layer 290 containing insulating material may be located on the first electrode 110. The pixel defining layer 290 may expose an area of ​​the first electrode 110, and an intermediate layer 130 may be formed in the exposed area of ​​the first electrode 110. The pixel defining layer 290 may be an organic film based on polyimide or polyacrylamide. Although in Figure 2 Although not shown, at least some layers of intermediate layer 130 may extend beyond the upper part of pixel-defining layer 290, and thus may be set as common layers.

[0455] The second electrode 150 may be disposed on the intermediate layer 130, and a cover layer 170 may be additionally formed on the second electrode 150. The cover layer 170 may be formed to cover the second electrode 150.

[0456] The encapsulation portion 300 may be located on the cover layer 170. The encapsulation portion 300 may be located on the light-emitting device and protect the light-emitting device from moisture or oxygen. The encapsulation portion 300 may include an inorganic film comprising silicon nitride (SiN). x ), silicon oxide (SiO) x Indium tin oxide, indium zinc oxide, or combinations thereof; organic membranes comprising polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate or polyacrylic acid), epoxy-based resins (e.g., aliphatic glycidyl ether (AGE)) or any combination thereof; or combinations of inorganic and organic membranes.

[0457] Figure 3 This is a schematic cross-sectional view of a light-emitting device according to another embodiment.

[0458] Figure 3 Light-emitting devices and Figure 2 The light-emitting device is the same, but the light-blocking pattern 500 and the functional area 400 are additionally located on the package portion 300. The functional area 400 can be i) a color filter area, ii) a color conversion area, or iii) a combination of a color filter area and a color conversion area. In the embodiment, it includes Figure 3 The light-emitting devices in the light-emitting equipment can be light-emitting devices connected in series.

[0459] [Preparation Method]

[0460] Layers constituting hole transport regions, emission regions, and electron transport regions can be formed in a specific region using one or more suitable methods selected from vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, and laser-induced thermal imaging.

[0461] When forming layers constituting hole transport regions, emitter regions, and electron transport regions via vacuum deposition, by considering the materials to be included in the layers to be formed and the structure of the layers to be formed, deposition temperatures of approximately 100°C to approximately 500°C and approximately 10 -8 To about 10 -3 The vacuum degree and about to approximately Deposition occurs at a certain deposition rate.

[0462] [Definition of the term]

[0463] As used in this article, the term "C3-C" 60 A "carbocyclic group" refers to a cyclic group consisting only of carbon and hydrogen and having three to sixty carbon atoms (e.g., three to thirty, three to twenty-four, or three to eighteen carbon atoms), and as used herein, the term "C1-C". 60 A "heterocyclic group" refers to a cyclic group having one to sixty carbon atoms (e.g., one to thirty, one to twenty-four, or one to eighteen carbon atoms) and further comprising heteroatoms other than carbon (e.g., one to five or one to three heteroatoms). C3-C 60 Carbocyclic groups and C1-C 60 The heterocyclic group can be a monocyclic group, each consisting of a single ring, or a polycyclic group in which two or more rings are fused together. In the embodiment, C1-C 60 The number of cyclic atoms in a heterocyclic group can range from 3 to 61.

[0464] As used in this article, the term "cyclic group" includes C3-C 60 Carbocyclic groups and C1-C 60 Heterocyclic groups.

[0465] As used in this article, “π-electron-rich C3-C” 60 "Cyclic group" refers to a cyclic group having three to sixty carbon atoms (e.g., three to thirty, three to twenty-four, or three to eighteen carbon atoms) and not containing *-N=*' as a cyclic moiety, and as used herein, "C1-C containing π-electron-deficient nitrogen". 60 A "cyclic group" refers to a heterocyclic group having one to sixty carbon atoms (e.g., one to thirty, one to twenty-four, or one to eighteen carbon atoms) and containing *-N=*' as the cyclic part.

[0466] For example,

[0467] C3-C 60The carbocyclic group can be i) group T1 or ii) a fused cyclic group in which two or more groups T1 are fused together (e.g., cyclopentadienyl group, adamantyl group, norbornel group, phenyl group, pentanene group, naphthyl group, chamomile ring group, indole group, acenaphthene group, phenanthrene group, phenanthrene group, anthracene group, fluoranthene group, benzo[a]phenanthrene group, pyrene group, etc.). Groups, perylene groups, pentaphenyl groups, heptadiene groups, tetraphenyl groups, styrene groups, hexaphenyl groups, pentaphenyl groups, rutin groups, argentinium groups, ovoid groups, indene groups, fluorene groups, spiro-difluorene groups, benzo[a]fluorene groups, ind[a]phenanthrene groups, or ind[a]anthracene groups),

[0468] C1-C 60 The heterocyclic group can be i) group T2, ii) a fused cyclic group in which two or more groups T2 are fused together, or iii) a fused cyclic group in which at least one group T2 and at least one group T1 are fused together (e.g., pyrrole group, thiophene group, furan group, indole group, benzo[a]indole group, naphtho[a]indole group, isoindole group, benzo[a]isoindole group, naphtho[a]isoindole group, benzo[a]thiophene ... Thiophene group, benzofuran group, carbazole group, dibenzothiophene group, dibenzothiophene group, dibenzofuran group, indole-carbazole group, indole-carbazole group, benzofuran-carbazole group, benzothiophene-carbazole group, benzothiophene-carbazole group, benzoindole-carbazole group, benzocarbazole group, benzonaphthiophene group, benzonaphthiophene group, benzofuran-dibenzofuran group, benzofuran-dibenzofuran group Benzothiophene group, benzothiophene dibenzothiophene group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiazolyldiazole group, benzopyrazole group, benzimidazole group, benzooxazole group, benziisooxazole group, benzothiazole group, benziisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group Benzoquinoline group, benzoisoquinoline group, quinoxaloline group, benzoquinoxaloline group, quinazoline group, benzoquinazoline group, phenanthrene group, cyclophosphine group, phthalazine group, naphthidine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzothiophene group, azadibenzothiophene group or azadibenzofuran group),

[0469] C3-C rich in π electrons 60The cyclic group can be i) group T1, ii) a fused cyclic group in which two or more groups T1 are fused together, iii) group T3, iv) a fused cyclic group in which two or more groups T3 are fused together, or v) a fused cyclic group in which at least one group T3 and at least one group T1 are fused together (e.g., C3-C). 60 Carbocyclic groups, pyrrole groups, thiophene groups, furan groups, indole groups, benzoindole groups, naphthoindole groups, isoindole groups, benzoisoindole groups, naphthoisoindole groups, benzothiophene groups, benzofuran groups, carbazole groups, dibenzothiophene groups, dibenzofuran groups, indole-carbazole groups, indole-carbazole groups, benzofuran-carbazole groups, benzothiophene-carbazole groups, benzothiophene-carbazole groups, benzoindole-carbazole groups, benzocarbazole groups, benzonaphthofuran groups, benzonaphthophene groups, benzonaphthothiophene groups, benzofuran-dibenzofuran groups, benzofuran-dibenzothiophene groups or benzothiophene-dibenzothiophene groups),

[0470] C1-C containing nitrogen lacking π electrons 60 The cyclic group can be i) group T4, ii) a fused cyclic group in which two or more groups T4 are fused together, iii) a fused cyclic group in which at least one group T4 and at least one group T1 are fused together, iv) a fused cyclic group in which at least one group T4 and at least one group T3 are fused together, or v) a fused cyclic group in which at least one group T4, at least one group T1 and at least one group T3 are fused together (e.g., pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiaazole group, benzopyrazole group, benzimazole group). Azolium group, benzoxazole group, benzoisoxazole group, benzothiazole group, benzoisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzoquinoline group, benzoisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazoline group, benzoquinazoline group, phenanthrene group, cinnamyl group, phthalazine group, naphthidine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzothiophene group, azadibenzothiophene group or azadibenzofuran group),

[0471] Group T1 can be a cyclopropane group, cyclobutane group, cyclopentane group, cyclohexane group, cycloheptane group, cyclooctane group, cyclobutene group, cyclopentene group, cyclopentadiene group, cyclohexene group, cyclohexadiene group, cycloheptene group, adamantane group, norbornene group (or bicyclo[2.2.1]heptane group), norbornene group, bicyclo[1.1.1]pentane group, bicyclo[2.1.1]hexane group, bicyclo[2.2.2]octane group, or phenyl group.

[0472] Group T2 can be a furan group, thiophene group, 1H-pyrrole group, thiorrole group, borocyclopentadienyl group, 2H-pyrrole group, 3H-pyrrole group, imidazole group, pyrazole group, triazole group, tetraazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, azathirrole group, azaboracyclopentadienyl group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, or tetraazine group.

[0473] Group T3 can be a furan group, a thiophene group, a 1H-pyrrole group, a thiophene group, or a borocyclopentadiene group, and

[0474] The group T4 can be a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetraazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azathirrole group, an azaboranecyclopentadiene group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or a tetraazine group.

[0475] As used in this article, "cyclic group, C3-C" 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, π-electron-rich C3-C 60 Cyclic groups or C1-C atoms containing nitrogen lacking π electrons 60 "Cyclic group" refers to a group, monovalent group, or polyvalent group (e.g., divalent, trivalent, tetravalent, etc.) fused with a cyclic group according to the structure of the formula described by the corresponding term. In embodiments, the term "phenyl group" can be a benzo[a] group, phenyl group, phenylene group, etc., which can be readily understood by those skilled in the art based on the structure of a formula including "phenyl group".

[0476] In the implementation plan, the unit price is C3-C. 60 Carbocyclic groups and monovalent C1-C 60 Examples of heterocyclic groups are C3-C. 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10Heterocyclic alkenyl groups, C6-C 60 aryl group, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups, and divalent C3-C 60 Carbocyclic groups and divalent C1-C 60 Examples of heterocyclic groups are C3-C. 10 Cycloalkyl groups, C1-C 10 heterocyclic alkyl groups, C3-C 10 Cycloalkylene groups, C1-C 10 heterocyclic alkenyl groups, C6-C 60 arylene groups, C1-C 60 Hypoaryl groups, divalent non-aromatic fused polycyclic groups, and divalent non-aromatic fused heterocyclic groups.

[0477] As used in this article, the term "C1-C" 60 "alkyl group" refers to a straight-chain or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms (e.g., 1 to 30, 1 to 20, or 1 to 10 carbon atoms), and examples include methyl groups, ethyl groups, n-propyl groups, isopropyl groups, n-butyl groups, sec-butyl groups, isobutyl groups, tert-butyl groups, n-pentyl groups, tert-pentyl groups, neopentyl groups, isopentyl groups, sec-pentyl groups, 3-pentyl groups, sec-isopentyl groups, n-hexyl groups, isohexyl groups, sec-hexyl groups, tert-hexyl groups, n-heptyl groups, isohexyl groups, sec-heptyl groups, tert-heptyl groups, n-octyl groups, isooctyl groups, sec-octyl groups, tert-octyl groups, n-nonyl groups, isononyl groups, sec-nonyl groups, tert-nonyl groups, n-decyl groups, isodel groups, sec-decyl groups, and tert-decyl groups. The term "C1-C" is used herein. 60 "alkylene group" refers to a group that has a C1-C2 bond structure. 60 Divalent groups with the same structure as alkyl groups.

[0478] As used in this article, the term "C2-C" 60 "Alkenyl group" refers to the group located at C2-C. 60 The alkyl group is a monovalent hydrocarbon group (e.g., 2 to 30, 2 to 20, or 2 to 10 carbon atoms) having at least one carbon-carbon double bond at its middle or end, and examples include vinyl groups, propenyl groups, and butenyl groups. As used herein, the term "C2-C" is used... 60 "Ideinyl group" refers to a group that has a C2-C... 60 Divalent groups with the same structure as alkenyl groups.

[0479] As used in this article, the term "C2-C" 60 "Alkyne group" refers to the group located at C2-C.60 An alkyl group having at least one carbon-carbon triple bond at its middle or end is a monovalent hydrocarbon group (e.g., 2 to 30, 2 to 20, or 2 to 10 carbon atoms), and examples include ethynyl and propynyl groups. As used herein, the term "C2-C" is used... 60 "Imyynyl group" refers to a group that has a C2-C... 60 A divalent group with the same structure as the alkynyl group.

[0480] As used in this article, the term "C1-C" 60 "Alkoxy group" refers to the group consisting of -OA 101 (where A) 101 It is C1-C 60 Alkyl groups are monovalent groups, and examples of them include methoxy groups, ethoxy groups and isopropoxy groups.

[0481] As used in this article, the term "C3-C" 10 "Cycloalkyl group" refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and examples of such groups are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornel alkyl (or bicyclic [2.2.1]heptyl), bicyclic [1.1.1]pentyl, bicyclic [2.1.1]hexyl, and bicyclic [2.2.2]octyl. As used herein, the term "C3-C" is also relevant. 10 "Cycloalkylene group" refers to a group that has a C3-C6 bond structure. 10 A divalent group with the same structure as a cycloalkyl group.

[0482] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl group" refers to a monovalent cyclic group that further comprises at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms) as a cyclic atom in addition to a carbon atom and has 1 to 10 carbon atoms, and examples are 1,2,3,4-oxatriazole alkyl groups, tetrahydrofuranyl groups, and tetrahydrothiophenyl groups. As used herein, the term "C1-C..." 10 "Heterocyclic alkyl groups" refers to groups with C1-C2 groups. 10 Divalent groups with the same structure as heterocyclic alkyl groups.

[0483] As used in this article, the term "C3-C" 10 "Cycloalkenyl group" refers to a monovalent monocyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and lacking aromaticity, and examples include cyclopentenyl, cyclohexenyl, and cycloheptenyl groups. As used herein, the term "C3-C" is also relevant. 10 "Iridyl group" refers to a group that has a C3-C6 bond structure. 10A divalent group with the same structure as the cycloalkenyl group.

[0484] As used in this article, the term "C1-C" 10 A "heterocyclic alkenyl group" refers to a monovalent cyclic group having at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms) other than carbon atoms as cyclic atoms, 1 to 10 carbon atoms, and at least one double bond in its cyclic structure. C1-C 10 Examples of heterocyclic alkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothiophenyl groups. As used herein, the term "C1-C..." 10 "Heterocyclic alkenyl group" refers to a group that has a C1-C2 bond structure. 10 A divalent group with the same structure as a heterocyclic alkenyl group.

[0485] As used in this article, the term "C6-C" 60 "Aryl group" refers to a monovalent group having a carbocyclic aromatic system containing 6 to 60 carbon atoms (e.g., 6 to 30, 6 to 24, or 6 to 18 carbon atoms), and as used herein by the term "C6-C". 60 An "arylene group" refers to a divalent group in a carbocyclic aromatic system containing 6 to 60 carbon atoms (e.g., 6 to 30, 6 to 24, or 6 to 18 carbon atoms). (C6-C) 60 Examples of aryl groups include phenyl groups, pentanenyl groups, naphthyl groups, chamomile cycloyl groups, indoleyl groups, acenaphthenic groups, phenanthreneyl groups, anthraceneyl groups, fluoranthraceneyl groups, benzo[a]phenanthreneyl groups, and pyreneyl groups. Peryl group, peryl group, pentaphenyl group, heptalenyl group, tetraphenyl group, fusyl group, hexaphenyl group, pentaphenyl group, rutinyl group, keratyl group, and ovoidyl group. When C6-C 60 aryl groups and C6-C 60 When each of the aryl groups comprises two or more rings, the two or more rings may be fused together.

[0486] As used in this article, the term "C1-C" 60 A "heteroaryl group" refers to a monovalent group in a heterocyclic aromatic system having at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms) other than carbon atoms as cyclic atoms and 1 to 60 carbon atoms (e.g., 1 to 30, 1 to 24 or 1 to 18 carbon atoms). As used herein, the term "C1-C..." 60A "hybrid aryl group" refers to a divalent group in a heterocyclic aromatic system having at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms) other than carbon atoms as cyclic atoms and 1 to 60 carbon atoms (e.g., 1 to 30, 1 to 24 or 1 to 18 carbon atoms). C1-C 60 Examples of heteroaryl groups are pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, benzo[a]quinolinyl, isoquinolinyl, benzo[a]isoquinolinyl, quinoxalinyl, benzo[a]quinoxalinyl, quinazolinyl, benzo[a]quinazolinyl, phenanthrolinel, phthalazinyl, and naphthidyl. When C1-C 60 heteroaryl groups and C1-C 60 When each of the heteroaryl groups comprises two or more rings, the two or more rings may be fused together.

[0487] As used herein, the term "monovalent nonaromatic fused polycyclic group" refers to a monovalent group (e.g., having 8 to 60 carbon atoms, such as 8 to 30, 8 to 24, or 8 to 18 carbon atoms) having two or more rings fused together, with only carbon atoms as cyclic atoms, and lacking aromaticity throughout its molecular structure. Examples of monovalent nonaromatic fused polycyclic groups are indenyl groups, fluorenyl groups, spiro-difluorenyl groups, benzo[a]fluorenyl groups, indo[a]phenanthrene groups, and indo[a]anthrayl groups. As used herein, the term "divalent nonaromatic fused polycyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused polycyclic group.

[0488] As used herein, the term "monovalent nonaromatic fused heterocyclic group" refers to a monovalent group (e.g., having 1 to 60 carbon atoms, such as 1 to 30, 1 to 24, or 1 to 18 carbon atoms) having two or more rings fused together, at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms) as a cyclic atom in addition to carbon atoms, and being non-aromatic throughout its molecular structure. Examples of monovalent non-aromatic fused heterocyclic groups include pyrrolyl groups, thiophenyl groups, furanyl groups, indole groups, benzoindole groups, naphthoindole groups, isoindole groups, benzoisoindole groups, naphthoisoindole groups, benzothiolyl groups, benzothiphenyl groups, benzofuranyl groups, carbazole groups, dibenzothiolyl groups, dibenzothiphenyl groups, dibenzofuranyl groups, azacarbazole groups, azafluorenyl groups, azadibenzothiolyl groups, azadibenzothiphenyl groups, azadibenzofuranyl groups, pyrazolyl groups, imidazole groups, triazoleyl groups, tetraazoleyl groups, oxazolyl groups, isoxazolyl groups, thiolyl groups, isothiazolyl groups, and oxadiazoleyl groups. Thiadiazolyl group, benzopyrazolyl group, benzoimidazolyl group, benzooxazolyl group, benzothiazolyl group, benzooxadiazolyl group, benzothiadiazolyl group, imidazopyridyl group, imidazopyrimidine group, imidazotriazinyl group, imidazopyrazinyl group, imidazopyridazinyl group, indolecarbazoyl group, indolocarbazoyl group, benzofuranocarbazoyl group, benzothiophenocarbazoyl group, benzothiophenocarbazoyl group, benzoindolocarbazoyl group, benzocarbazoyl group, benzonaphthiophenyl group, benzonaphthiophenyl group, benzofuranodibenzofuranyl group, benzofuranodibenzothiophenyl group and benzothiophenodibenzothiophenyl group. As used in this article, the term "divalent nonaromatic fused heterocyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused heterocyclic group.

[0489] As used in this article, the term "C6-C" 60 "Aryloxy group" refers to -OA 102 (where A) 102 It is C6-C 60 (aryl group), and as used herein by the term "C6-C" 60 "Aryl thio group" refers to -SA 103 (where A) 103 It is C6-C 60 (aryl group).

[0490] As used in this article, group R 10a It could be:

[0491] Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group;

[0492] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl 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 -P(=O)(Q) 11 (Q) 12 C1-C substituted by (or any combination thereof) 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group or C1-C 60 alkoxy group;

[0493] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl 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 -P(=O)(Q) 21 (Q) 22 C3-C replaced by any combination thereof 60 Carbocyclic groups, C1-C 60Heterocyclic groups, C6-C 60 aryloxy group or C6-C 60 aryl thioyl group; or

[0494] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ).

[0495] The Q1 to Q3 and Q used in this article 11 To Q 13 Q 21 To Q 23 And Q 31 To Q 33 Each of these can be independently hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy groups; or each unsubstituted or deuterated, -F, cyano groups, C1-C 60 Alkyl groups, C1-C 60 C3-C substituted with alkoxy groups, phenyl groups, biphenyl groups, or any combination thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups.

[0496] As used herein, the term "heteroatom" refers to any atom other than a carbon atom. Examples of heteroatoms are O, S, N, P, Si, B, Ge, Se, or any combination thereof.

[0497] As used herein, the term "Ph" refers to a phenyl group, "Me" refers to a methyl group, "Et" refers to an ethyl group, and "tert-Bu" or "Bu" refers to a tert-Bu group. t "" refers to the tert-butyl group, and as used herein, the term "OMe" refers to the methyl methacrylate group.

[0498] As used in this article, the term "biphenyl group" refers to a "phenyl group substituted with a phenyl group." In other words, a "biphenyl group" is a group with a C6-C6 bond. 60The aryl group is a substituted phenyl group.

[0499] As used in this article, the term "terphenyl group" refers to a "phenyl group substituted with a biphenyl group." In other words, a "terphenyl group" is a phenyl group with a C6-C substituted group. 60 C6-C substituted with aryl group 60 The aryl group is a substituted phenyl group.

[0500] Unless otherwise defined, as used herein, * and *' each refer to the binding site with the adjacent atom in the corresponding formula.

[0501] The compounds and light-emitting devices according to the embodiments will be described in detail below with reference to the embodiments. The phrase "using B instead of A" used to describe the embodiments means using an equimolar amount of B instead of A.

[0502] [Example]

[0503] Example 1-1

[0504] As the anode, an ITO / Ag / ITO substrate (hereinafter referred to as "ITO substrate") was cut to a size of 50 mm × 50 mm × 0.7 mm, ultrasonicated for 5 minutes each with isopropanol and pure water, and cleaned by ultraviolet irradiation and ozone exposure for 30 minutes. The ITO substrate was then loaded onto a vacuum deposition apparatus.

[0505] Compound 6 was vacuum deposited on an ITO substrate to form a hole injection layer with a thickness of 110 nm, and HT45 was vacuum deposited on the hole injection layer to form a hole transport layer with a thickness of 10 nm.

[0506] H125 and PD11 were co-deposited on the hole transport layer at a weight ratio of 90:10 to form an emitter layer with a thickness of 30 nm. Subsequently, BAlq was vacuum-deposited on top to form a hole blocking layer with a thickness of 10 nm. Then, Alq3 was deposited on the hole blocking layer to form an electron transport layer with a thickness of 20 nm, LiF, as an alkali metal halide, was deposited on the electron transport layer to form an electron injection layer with a thickness of 1 nm, and Al was vacuum-deposited on top to form a LiF / Al cathode with a thickness of 30 nm, thereby completing the fabrication of the light-emitting device.

[0507]

[0508] Examples 1-2 to 1-8 and Comparative Examples 1-1 and 1-2

[0509] The light-emitting device was manufactured in the same manner as in Examples 1-1, but the compounds shown in Table 1 were used instead of compounds 6, HT45, HT125 and PD11 used in Examples 1-1.

[0510] Evaluation Example 1

[0511] To evaluate the characteristics of the light-emitting devices manufactured in Examples 1-1 to 1-8 and Comparative Examples 1-1 and 1-2, for each of the light-emitting devices in Examples 1-1 to 1-8 and Comparative Examples 1-1 and 1-2, measurements were taken at 1000 cd / m² using a Keithley MU 236 and a PR650 luminance meter. 2 Drive voltage (V), light emission efficiency (cd / A), emission color and lifetime (LT) 97 The results are shown in Table 1. In Table 1, the service life (LT) is... 97 The value represents the amount of time elapsed when the brightness is 97% of the initial brightness, where the lifespan of the light-emitting device based on Comparative Examples 1-2 is 100%.

[0512] [Table 1]

[0513]

[0514]

[0515]

[0516] Referring to Table 1, it is confirmed that compared with the light-emitting device of Comparative Example 1-1, the light-emitting devices of Examples 1-1 to 1-4 have low driving voltage, high efficiency or long service life, and compared with the light-emitting device of Comparative Example 1-2, the light-emitting devices of Examples 1-5 to 1-8 have low driving voltage, high efficiency or long service life.

[0517] Example 2-1

[0518] The light-emitting device was manufactured in the same manner as in Examples 1-1, but compound 6 was vacuum deposited on an ITO substrate to form a hole injection layer with a thickness of 110 nm, HT45 was vacuum deposited on the hole injection layer to form a hole transport layer with a thickness of 10 nm, and H125 and PD13 were co-deposited on the hole transport layer in a weight ratio of 90:10 to form an emission layer with a thickness of 30 nm.

[0519]

[0520] Examples 2-2 to 2-8 and Comparative Examples 2-1 and 2-2

[0521] The light-emitting device was manufactured in the same manner as in Example 2-1, but the compounds shown in Table 2 were used instead of compounds 6, HT45, HT125 and PD13 used in Example 2-1.

[0522] Evaluation Example 2

[0523] Evaluation Example 2 was measured in the same manner as Evaluation Example 1, but the lifespan of Comparative Example 2-2 was used as the 100% standard. The results of the evaluation of the characteristics of the light-emitting devices manufactured in Examples 2-1 to 2-8, as well as Comparative Examples 1-1 and 2-2, are shown in Table 2.

[0524] [Table 2]

[0525]

[0526]

[0527]

[0528] Referring to Table 2, it is confirmed that compared with the light-emitting device of Comparative Example 2-1, the light-emitting devices of Examples 2-1 to 2-4 have low driving voltage, high efficiency or long service life, and compared with the light-emitting device of Comparative Example 2-2, the light-emitting devices of Examples 2-5 to 2-8 have low driving voltage, high efficiency or long service life.

[0529] Example 3-1

[0530] The light-emitting device was manufactured in the same manner as in Examples 1-1, but compound 6 was vacuum deposited on an ITO substrate to form a hole injection layer with a thickness of 110 nm, HT45 was vacuum deposited on the hole injection layer to form a hole transport layer with a thickness of 10 nm, and H127 and FD1 were co-deposited on the hole transport layer in a weight ratio of 90:10 to form an emission layer with a thickness of 30 nm.

[0531]

[0532] Examples 3-2 to 3-8 and Comparative Examples 3-1 and 3-2

[0533] The light-emitting device was manufactured in the same manner as in Example 3-1, but the compounds shown in Table 3 were used instead of compounds 6, HT45, HT127 and FD1 used in Example 3-1.

[0534] Evaluation Example 3

[0535] Evaluation Example 3 was measured in the same manner as Evaluation Example 1, but the lifespan of Comparative Example 3-1 was used as the 100% standard. The results of the evaluation of the characteristics of the light-emitting devices manufactured in Examples 3-1 to 3-8 and Comparative Examples 3-1 and 3-2 are shown in Table 3.

[0536] [Table 3]

[0537]

[0538]

[0539] Referring to Table 3, it is confirmed that compared with the light-emitting device of Comparative Example 3-1, the light-emitting devices of Examples 3-1 to 3-4 have low driving voltage, high efficiency or long service life, and compared with the light-emitting device of Comparative Example 3-2, the light-emitting devices of Examples 3-5 to 3-8 have low driving voltage, high efficiency or long service life.

[0540] Example 4-1

[0541] The light-emitting device was manufactured in the same manner as in Examples 1-1, but compound 24 was vacuum deposited on an ITO substrate to form a hole injection layer with a thickness of 110 nm, HT45 was vacuum deposited on the hole injection layer to form a hole transport layer with a thickness of 10 nm, and H125 and PD11 were co-deposited on the hole transport layer in a weight ratio of 90:10 to form an emission layer with a thickness of 30 nm.

[0542]

[0543] Examples 4-2 to 4-6 and Comparative Examples 4-1 and 4-2

[0544] The light-emitting device was manufactured in the same manner as in Example 4-1, but the compounds shown in Table 4 were used instead of compounds 24, HT45, HT125 and PD11 used in Example 4-1.

[0545] Evaluation Example 4

[0546] Evaluation Example 4 was measured in the same manner as Evaluation Example 1, but the lifespan of Comparative Example 4-2 was used as the 100% standard. The results of the evaluation of the characteristics of the light-emitting devices manufactured in Examples 4-1 to 4-6, as well as Comparative Examples 4-1 and 4-2, are shown in Table 4.

[0547] [Table 4]

[0548]

[0549]

[0550] Referring to Table 4, it is confirmed that compared with the light-emitting device of Comparative Example 4-1, the light-emitting devices of Examples 4-1 to 4-3 have low driving voltage, high efficiency or long service life, and compared with the light-emitting device of Comparative Example 4-2, the light-emitting devices of Examples 4-4 to 4-6 have low driving voltage, high efficiency or long service life.

[0551] Example 5-1

[0552] The light-emitting device was manufactured in the same manner as in Examples 1-1, but compound 24 was vacuum deposited on an ITO substrate to form a hole injection layer with a thickness of 110 nm, HT45 was vacuum deposited on the hole injection layer to form a hole transport layer with a thickness of 10 nm, and H125 and PD13 were co-deposited on the hole transport layer in a weight ratio of 90:10 to form an emission layer with a thickness of 30 nm.

[0553]

[0554] Examples 5-2 to 5-6 and Comparative Examples 5-1 and 5-2

[0555] The light-emitting device was manufactured in the same manner as in Example 5-1, but the compounds shown in Table 5 were used instead of compounds 24, HT45, HT125 and PD13 used in Example 5-1.

[0556] Evaluation Example 5

[0557] Evaluation Example 5 was measured in the same manner as Evaluation Example 1, but the lifespan of Comparative Example 5-2 was used as the 100% standard. The results of the evaluation of the characteristics of the light-emitting devices manufactured in Examples 5-1 to 5-6 and Comparative Examples 5-1 and 5-2 are shown in Table 5.

[0558] [Table 5]

[0559]

[0560]

[0561] Referring to Table 5, it is confirmed that compared with the light-emitting device of Comparative Example 5-1, the light-emitting devices of Examples 5-1 to 5-3 have low driving voltage, high efficiency or long service life, and compared with the light-emitting device of Comparative Example 5-2, the light-emitting devices of Examples 5-4 to 5-6 have low driving voltage, high efficiency or long service life.

[0562] Example 6-1

[0563] The light-emitting device was manufactured in the same manner as in Examples 1-1, but compound 24 was vacuum deposited on an ITO substrate to form a hole injection layer with a thickness of 110 nm, HT45 was vacuum deposited on the hole injection layer to form a hole transport layer with a thickness of 10 nm, and H127 and FD1 were co-deposited on the hole transport layer in a weight ratio of 90:10 to form an emission layer with a thickness of 30 nm.

[0564]

[0565] Examples 6-2 to 6-6 and Comparative Examples 6-1 and 6-2

[0566] The light-emitting device was manufactured in the same manner as in Example 6-1, but the compounds shown in Table 6 were used instead of compounds 24, HT45, HT127 and FD1 used in Example 6-1.

[0567] Evaluation Example 6

[0568] Evaluation Example 6 was measured in the same manner as Evaluation Example 1, but the lifespan of Comparative Example 6-1 was used as the 100% standard. The results of the evaluation of the characteristics of the light-emitting devices manufactured in Examples 6-1 to 6-6, as well as Comparative Examples 6-1 and 6-2, are shown in Table 6.

[0569] [Table 6]

[0570]

[0571]

[0572] Referring to Table 6, it is confirmed that compared with the light-emitting device of Comparative Example 6-1, the light-emitting devices of Examples 6-1 to 6-3 have low driving voltage, high efficiency or long service life, and compared with the light-emitting device of Comparative Example 6-2, the light-emitting devices of Examples 6-4 to 6-6 have low driving voltage, high efficiency or long service life.

[0573] Light-emitting devices can have high efficiency and long service life, and can be used to manufacture high-quality electronic devices with excellent light emission efficiency and long service life.

[0574] It should be understood that the embodiments described herein are for descriptive purposes 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 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 herein without departing from the spirit and scope defined by the claims.

Claims

1. A light-emitting device, comprising: First electrode; The second electrode facing the first electrode; as well as In the intermediate layer between the first electrode and the second electrode, The intermediate layer includes an emitter layer and a hole transport region between the emitter layer and the first electrode. The hole transport region includes a first layer and a second layer between the first layer and the emission layer. The first layer and the second layer each contain at least one first compound. The at least one first compound contained in the first layer is different from the at least one first compound contained in the second layer. Each of the at least one first compound is independently represented by one of Formula 1, Formula 1-1, Formula 2, Formula 2-1 and Formula 3: In Equations 1, 1-1, 2, 2-1, and 3, Y 21 is O, S, Se, C(Z 21a )(Z 21b )、Si(Z 21a )(Z 21b ) or (Z 21a ), Y 31 is O, S, Se, C(Z 31a )(Z 31b )、Si(Z 31a )(Z 31b ) or (Z 31a ), Y 32 is O, S, Se, C(Z 32a )(Z 32b )、Si(Z 32a )(Z 32b ) or (Z 32a ), yes 14 N or 15 N, At least one of Equation 1, Equation 1-1, Equation 2, Equation 2-1, or Equation 3 yes 15 N, b21, b31, and b32 are each an independent integer from 0 to 3. Ar 11 To Ar 14 Ar 21 Ar 22 and Ar 24 Each is independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, Ring A 21 Ring A 22 And Ring A 31 To Ring A 34 Each is independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, L 10 L 20 and L 30 Each independently is -O- '、 -S- '、 - (Ar 15 )- ', unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, Ar 15 Regarding Ar 11 The descriptions are the same. L 11 To L 14 and L 21 To L 24 Each is independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, a11 to a14 and a21 to a24 are each independent integers from 0 to 10. a10, a20, and a30 are each an independent integer from 1 to 5. R 21 R 22 R 31 To R 34 Z 21a Z 21b Z 31a Z 31b Z 32a and Z 32b Each of the following is independently a hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted or substituted with at least one R 10a Replacement C1-C 60 alkyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 alkenyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 The alkynyl group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thioyl groups, -Si(Q1)(Q2)(Q3), - (Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), c21, c22, and c31 through c34 are each independent integers from 0 to 10. n is an integer from 1 to 5. R 10a yes: Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group; Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl groups, -Si(Q) 11 (Q) 12 (Q) 13 ), - (Q 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 C1-C replaced by ) or a combination thereof 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group or C1-C 60 alkoxy group; Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl groups, -Si(Q) 21 (Q) 22 (Q) 23 ), - (Q 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 C3-C replaced by (or a combination thereof) 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group or C6-C 60 aryl thioyl group; or -Si(Q 31 )(Q 32 )(Q 33 )、- (Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 )或-P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 And Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy groups; or each unsubstituted or deuterated, -F, cyano groups, C1-C 60 Alkyl groups, C1-C 60 C3-C substituted with alkoxy groups, phenyl groups, biphenyl groups, or combinations thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups, When included in C1-C 60 When the heteroatom in the heterocyclic group is a nitrogen atom, the nitrogen atom is 14 N or 15 N, The nitrogen atom contained in the cyano group or the nitro group is 14 N or 15 N, The at least one first compound contained in the first layer comprises m 11 Quantity 15 N, The at least one first compound contained in the second layer comprises m 12 Quantity 15 N, m 11 Greater than m 12 ,as well as The at least one first compound is not compound A: 。 2. The light-emitting device as claimed in claim 1, wherein... The at least one first compound comprises two or more N atoms, and When two of the two or more N's are attached to a heteroatom-free group, at least one of the two N's is 15 N.

3. The light-emitting device of claim 1, wherein each N in the at least one first compound is 15 N.

4. The light-emitting device of claim 1, wherein each of the at least one first compound is independently selected from compound 1 to compound 24: 。 5. The light-emitting device as claimed in claim 1, wherein... The emission layer includes a first emission layer, a second emission layer, and a third emission layer, each with a different emission color. The hole transport region includes a first emission auxiliary layer between the first electrode and the first emission layer, a second emission auxiliary layer between the first electrode and the second emission layer, and a third emission auxiliary layer between the first electrode and the third emission layer. At least one of the first emission assist layer, the second emission assist layer, and the third emission assist layer contains the at least one first compound.

6. A light-emitting device, including: First electrode; The second electrode facing the first electrode; The intermediate layer between the first electrode and the second electrode; as well as A covering layer disposed outside the second electrode and having a refractive index equal to or greater than 1.6, wherein The intermediate layer includes an emitter layer and a hole transport region between the emitter layer and the first electrode. The hole transport region includes a first layer and a second layer between the first layer and the emission layer. The first layer and the second layer each contain at least one first compound. The at least one first compound contained in the first layer is different from the at least one first compound contained in the second layer. Each of the at least one first compound is independently represented by one of Formula 1, Formula 1-1, Formula 2, Formula 2-1 and Formula 3: In Equations 1, 1-1, 2, 2-1, and 3, Y 21 is O, S, Se, C(Z 21a )(Z 21b )、Si(Z 21a )(Z 21b ) or (Z 21a ), Y 31 is O, S, Se, C(Z 31a )(Z 31b )、Si(Z 31a )(Z 31b ) or (Z 31a ), Y 32 is O, S, Se, C(Z 32a )(Z 32b )、Si(Z 32a )(Z 32b ) or (Z 32a ), yes 14 N or 15 N, At least one of Equation 1, Equation 1-1, Equation 2, Equation 2-1, or Equation 3 yes 15 N, b21, b31, and b32 are each an independent integer from 0 to 3. Ar 11 To Ar 14 Ar 21 Ar 22 and Ar 24 Each is independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, Ring A 21 Ring A 22 And Ring A 31 To Ring A 34 Each is independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, L 10 L 20 and L 30 Each independently is -O- '、 -S- '、 - (Ar 15 )- ', unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, Ar 15 Regarding Ar 11 The descriptions are the same. L 11 To L 14 and L 21 To L 24 Each is independently unsubstituted or by at least one R 10a Replacement C3-C 60 The carbocyclic group is either unsubstituted or has at least one R group. 10a Replacement C1-C 60 Heterocyclic groups, a11 to a14 and a21 to a24 are each independent integers from 0 to 10. a10, a20, and a30 are each an independent integer from 1 to 5. R 21 R 22 R 31 To R 34 Z 21a Z 21b Z 31a Z 31b Z 32a and Z 32b Each of the following is independently a hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted or substituted with at least one R 10a Replacement C1-C 60 alkyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 alkenyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 The alkynyl group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thioyl groups, -Si(Q1)(Q2)(Q3), - (Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), c21, c22, and c31 through c34 are each independent integers from 0 to 10. n is an integer from 1 to 5. R 10a yes: Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group; Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl groups, -Si(Q) 11 (Q) 12 (Q) 13 ), - (Q 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 C1-C replaced by ) or a combination thereof 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group or C1-C 60 alkoxy group; Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl groups, -Si(Q) 21 (Q) 22 (Q) 23 ), - (Q 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 C3-C replaced by (or a combination thereof) 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group or C6-C 60 aryl thioyl group; or -Si(Q 31 )(Q 32 )(Q 33 )、- (Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 )或-P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 And Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy groups; or each unsubstituted or deuterated, -F, cyano groups, C1-C 60 Alkyl groups, C1-C 60 C3-C substituted with alkoxy groups, phenyl groups, biphenyl groups, or combinations thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups, When included in C1-C 60 When the heteroatom in the heterocyclic group is a nitrogen atom, the nitrogen atom is 14 N or 15 N, The nitrogen atom contained in the cyano group or the nitro group is 14 N or 15 N, The at least one first compound contained in the first layer comprises m 11 Quantity 15 N, The at least one first compound contained in the second layer comprises m 12 Quantity 15 N, m 11 Greater than m 12 ,as well as The at least one first compound is not compound A: 。 7. An electronic device comprising the light-emitting device according to any one of claims 1 to 6, wherein, The electronic device further includes a thin-film transistor. The thin-film transistor includes a source electrode and a drain electrode, and The first electrode of the light-emitting device is electrically connected to the source electrode or the drain electrode.

8. The electronic device of claim 7, further comprising a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or a combination thereof.

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