Light-emitting device, and electronic apparatus and electronic equipment including same

Abstract

The invention provides a light-emitting device, and electronic equipment and electronic equipment comprising the light-emitting device. The light emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode and including an emission layer, wherein the emission layer includes a first emission layer and a second emission layer. The first emissive layer includes a first host and a first dopant, the second emissive layer includes a second host and a second dopant, and the first emissive layer is in direct contact with the second emissive layer. Each of the first dopant and the second dopant is an asymmetric compound containing at least one cyclic group containing each of boron (B) and nitrogen (N) as a ring forming atom.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0167158 filed on November 27, 2023, and Korean Patent Application No. 10-2024-0160485 filed on November 12, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more aspects of the embodiments of the present disclosure relate to a light emitting device, and electronic equipment and electronic devices, each of which includes the light emitting device. Background Art

[0004] Among light-emitting devices, self-emissive devices have relatively wide viewing angles, high contrast, short response times, and excellent or appropriate characteristics in terms of brightness, driving voltage, and response speed.

[0005] In the light-emitting device, a first electrode is located on a substrate, and a hole transport region, an emission layer, an electron transport region, and a second electrode are sequentially arranged on the first electrode. Holes provided from the first electrode move toward the emission layer through the hole transport region, and electrons provided from the second electrode move toward the emission layer through the electron transport region. Carriers (such as holes and electrons) recombine in the emission layer to generate excitons. These excitons transition from an excited state to a ground state to generate light. Summary of the invention

[0006] One or more aspects of the embodiments of the present disclosure relate to a light emitting device, and electronic equipment and electronic devices, each of which includes the light emitting device.

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

[0008] According to one or more embodiments, a light emitting device comprises:

[0009] The first electrode,

[0010] a second electrode facing the first electrode, and

[0011] an interlayer disposed between the first electrode and the second electrode and including an emission layer,

[0012] in,

[0013] The emission layer includes a first emission layer and a second emission layer located between the first emission layer and the second electrode.

[0014] The first emission layer includes a first host and a first dopant,

[0015] The second emission layer includes a second host and a second dopant,

[0016] The first emitting layer is on (eg, directly in contact with) the second emitting layer,

[0017] The first subject has a normalized efficiency of 0.8 or less,

[0018] The second subject has a normalized efficiency of 0.95 or greater, and

[0019] Each of the first dopant and the second dopant is an asymmetric compound including (e.g., containing) at least one cyclic group, wherein the at least one cyclic group includes (e.g., contains) each of boron (B) and nitrogen (N) as a ring-forming atom (e.g., at least one cyclic group includes B and N, and each of the included B and N is a ring-forming atom).

[0020] According to one or more embodiments, a light emitting device comprises:

[0021] The first electrode,

[0022] a second electrode facing the first electrode, and

[0023] an interlayer disposed between the first electrode and the second electrode and including an emission layer,

[0024] in,

[0025] The emission layer includes a red emission layer, a green emission layer and a blue emission layer.

[0026] The blue emission layer includes a first blue emission layer and a second blue emission layer arranged between the first blue emission layer and the second electrode,

[0027] The first blue emission layer includes a first host and a first dopant,

[0028] The second blue emission layer includes a second host and a second dopant,

[0029] The first blue emission layer is on (eg, directly in contact with) the second blue emission layer,

[0030] The first subject has a normalized efficiency of 0.8 or less,

[0031] The second subject has a normalized efficiency of 0.95 or greater, and

[0032] Each of the first dopant and the second dopant is an asymmetric compound including (e.g., containing) at least one cyclic group, wherein the at least one cyclic group includes (e.g., contains) each of boron (B) and nitrogen (N) as a ring-forming atom (e.g., at least one cyclic group includes B and N, and each of the included B and N is a ring-forming atom).

[0033] According to one or more embodiments, an electronic device includes a light emitting device.

[0034] According to one or more embodiments, an electronic device includes a light emitting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are included to provide a further understanding of the foregoing and other aspects, features, and advantages of specific embodiments of the present disclosure, and are incorporated into and constitute a part of this specification. The accompanying drawings, together with the following description in conjunction with the accompanying drawings, illustrate example embodiments. In the drawings:

[0036] Figures 1 to 4 Each is a schematic diagram of a structure of a light emitting device according to one or more embodiments;

[0037] Figures 5 to 7 Each is a schematic diagram of a structure of an electronic device according to one or more embodiments;

[0038] Figure 8 , Fig. 9 , Fig. 10A , Fig. 10B and Fig. 10C Each is a schematic diagram of a structure of an electronic device according to one or more embodiments; and

[0039] Fig.11 Graphs showing normalized efficiency values ​​depending on grayscale of Examples 1 to 3 and Comparative Examples 1 and 2. DETAILED DESCRIPTION

[0040] With reference to one or more embodiments in more detail, examples of embodiments of the present disclosure are explained in the accompanying drawings, wherein the same reference numerals refer to the same elements throughout the specification, and a repeated description thereof may not be provided. In this regard, the present embodiment may have different forms and should not be construed as being limited to the description set forth herein. Accordingly, the embodiments are described by reference to the accompanying drawings only to explain the various aspects of the present description. As used herein, the term "and / or" includes any and all combinations of one or more related enumerated items. Statements such as "at least one of...", "one of...", "selected from..." and "selected from...", when before / after a list of elements, modify the entire list of elements without modifying a single element of the list. For example, throughout the present disclosure, the statement "at least one of a, b and c" indicates only a, only b, only c, both a and b (e.g., simultaneously), both a and c (e.g., simultaneously), both b and c (e.g., simultaneously), all a, b and c, or variations thereof.

[0041] Because the present disclosure may have various modified embodiments, the embodiments are illustrated in the drawings and described in the detailed description. If (for example, when) referring to one or more embodiments described with reference to the drawings, the aspects and features of the present disclosure and the methods of achieving these will be apparent. However, the present disclosure may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein.

[0042] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The same or corresponding components will be denoted by the same reference numerals, and thus redundant descriptions thereof will not be provided.

[0043] Unless otherwise limited, all chemical names, technical terms and scientific terms and the terms defined in common dictionaries should be interpreted as having the meaning consistent with the context of the prior art, and should not be interpreted in an ideal or overly formal sense.It will be understood that although the terms "first" and / or "second" etc. can be used to describe one or more appropriate components in this article, these components should not be limited by these terms.These terms are only used to distinguish one component from another.Therefore, without departing from the teaching of the present disclosure, the first element can be named as the second element.Similarly, the second element can be named as the first element.Expressions used in singular form, such as "one (a)", "one (an)" and "the (the)", are also intended to encompass plural expressions, unless they have significantly different meanings in context.

[0044] It will be further understood that the terms “comprises,” “comprising,” “comprise,” “has,” “have,” “having,” “include,” “includes,” and / or “including” as used herein, when used in this specification, indicate the presence of specified features or elements, but do not preclude the presence or addition of one or more other features or elements.

[0045] As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "utilized," respectively.

[0046] The term "may" will be understood to refer to "one or more embodiments of the present disclosure," some of which include the described elements, and some of which do not include the elements and / or include optional elements. Similarly, optional language such as "or" refers to "one or more embodiments of the present disclosure," each of which includes the corresponding enumerated items.

[0047] In the following embodiments, if (for example, when) one or more components (such as layers, films, regions and / or plates, etc.) are referred to as being "connected to" another component (such as layers, films, regions and / or plates, etc.) or "on" another component (such as layers, films, regions and / or plates, etc.), this may include not only the case where one or more components (such as layers, films, regions and / or plates, etc.) are "directly on" another component (such as layers, films, regions and / or plates, etc.), but also the case where other components are placed therebetween. For convenience of explanation, the size of the elements in the drawings may be exaggerated. In other words, because the size and thickness of the components in the drawings are arbitrarily explained for convenience of explanation, the following embodiments are not limited thereto.

[0048] For ease of description, spatially relative terms such as "below," "beneath," "below," "above," "above," "bottom," and "top," etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the accompanying drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, elements described as being "below" or "beneath" other elements or features will be oriented "above" or "on" the other elements or features. Thus, the term "below" may encompass both orientations of above and below. The device may be otherwise oriented (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0049] In this context, "consisting essentially of" means that any additional components will not materially affect the chemical, physical, optical, or electrical properties of the semiconductor film.

[0050] Further, in this specification, the phrase "on a plane" or "plan view" means observing a target portion from the top, and the phrase "in cross section" means observing a cross section formed by vertically cutting the target portion from the side.

[0051] The term "interlayer" as used herein refers to a single layer and / or multiple layers located between a first electrode and a second electrode of a light emitting device.

[0052] Light-emitting device

[0053] In one or more embodiments, a light emitting device according to the present disclosure includes:

[0054] a first electrode;

[0055] a second electrode facing the first electrode; and

[0056] an interlayer disposed between the first electrode and the second electrode and including an emission layer,

[0057] The emission layer includes a first emission layer and a second emission layer located between the first emission layer and the second electrode.

[0058] The first emission layer includes a first host and a first dopant,

[0059] The second emission layer includes a second host and a second dopant,

[0060] The first emitting layer may be on (eg, in direct contact with) the second emitting layer,

[0061] The first subject has a normalized efficiency of 0.8 or less,

[0062] The second subject has a normalized efficiency of 0.95 or greater, and

[0063] Each of the first dopant and the second dopant may be an asymmetric compound containing at least one cyclic group containing each of boron (B) and nitrogen (N) as a ring-forming atom (for example, at least one cyclic group includes B and N, each of the included B and N is a ring-forming atom).

[0064] In one or more embodiments, the first body may have a normalized efficiency of 0.8 or less at 50 grayscale (eg, at 50 grayscale levels), and the second body may have a normalized efficiency of 0.95 or more at 50 grayscale.

[0065] In one or more embodiments, the normalized efficiency of the light emitting device may be 0.8 or more and 0.95 or less.

[0066] In one or more embodiments, the normalized efficiency of the light emitting device at 50 grayscale may be 0.8 or more and 0.95 or less.

[0067] "50 grayscale" can be determined as follows. Regarding "grayscale", 1000 candelas per square meter (ie, "nit" or "cd / m 2 ”) can be defined as the value of “255 grayscale”, and each grayscale can be obtained by converting 0cd / m 2 (nit) to 1000cd / m 2 The brightness interval of (nit) is divided into 255 intervals to define. For example, "50 grayscale" can be defined as the brightness corresponding to the 50th interval. The efficiency (cd / A) is measured by dividing the brightness (cd) measured by the brightness meter by the current (A) flowing through the device. The efficiency (cd / A) of each grayscale defined in this specification can be measured by the brightness and the current value flowing through the device.

[0068] The "normalized efficiency" can be measured by the following method. For example, the "normalized efficiency" can be measured at "50 grayscale" by the following method.

[0069] The standard (1.0) of "normalized efficiency" may be defined as the highest efficiency value among the calculated efficiency values ​​from grayscale 0 to grayscale 255. Therefore, the efficiency value of each grayscale may be normalized by dividing the efficiency value of each grayscale by the highest efficiency value among the calculated efficiency values ​​from grayscale 0 to grayscale 255. Therefore, "normalized efficiency" may be defined as the efficiency value at a particular grayscale divided by the highest efficiency value among the calculated efficiency values ​​from grayscale 0 to grayscale 255.

[0070] In one or more embodiments, the first body and the second body may satisfy at least one of the following conditions (eg, at least one selected from the following conditions):

[0071] Condition 1-1

[0072] The first subject's S 1 Energy Level and T 2 The difference between energy levels is 0.05 electron volts (eV) or less (e.g., 0.04 eV or less); and

[0073] Condition 1-2

[0074] The second subject's S 1 Energy Level and T 2 The difference between the energy levels is 0.1 eV or less.

[0075] In one or more embodiments, the first body and the second body may satisfy at least one of the following conditions (eg, at least one selected from the following conditions):

[0076] Condition 1-1

[0077] The first subject's S 1 Energy Level and T 2 The difference between energy levels is 0.04 eV or less; and

[0078] Condition 1-2

[0079] The second subject's S 1 Energy Level and T 2 The difference between the energy levels is 0.1 eV or less.

[0080] In one or more embodiments, the first body and the second body may satisfy at least one of the following conditions (eg, at least one selected from the following conditions):

[0081] Condition 2-1

[0082] The first subject's S 1 The energy level is about 3.10 eV to about 3.15 eV;

[0083] Condition 2-2

[0084] The second subject's S 1 The energy level is about 3.10 eV to about 3.15 eV;

[0085] Conditions 2-3

[0086] The first subject's T 2 An energy level of about 3.15 eV to about 3.20 eV; and

[0087] Conditions 2-4

[0088] T of the second subject 2 The energy level is from about 3.00 eV to about 3.05 eV.

[0089] In one or more embodiments, the first host may be a compound represented by Formula 1:

[0090] Formula 1

[0091]

[0092] Among them, in formula 1,

[0093] In one or more embodiments, X 1 Can be N(R 1 ), O, S or C (R 1 )(R 1 ').

[0094] In one or more embodiments, L 11 and L 12 may be independently: a single bond; or each unsubstituted or substituted by at least one R 10a substituted phenyl, naphthyl, fluorenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, azacarbazolyl, azadibenzofuranyl or azadibenzothiophenyl.

[0095] In one or more embodiments, n11 and n12 may each independently be an integer selected from 1 to 5.

[0096] In one or more embodiments, Ar 11 may be unsubstituted or substituted with at least one R 10a Substituted C 5 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group.

[0097] In one or more embodiments, Ar 11 Can be: each unsubstituted or substituted with at least one R 10a substituted phenyl, naphthyl, fluorenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, dibenzosilyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azadibenzosilyl, pyridyl, pyrazinyl, quinazolinyl, pyrimidinyl, triazine, quinolinyl, quinoxalinyl or benzimidazolyl,

[0098] Where Q 1 To Q 3 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C substituted with alkoxy, phenyl, biphenyl and / or any suitable combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0099] In one or more embodiments, R 1 , R 1 '、R 11 and R 12 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted by at least one R 10a Substituted C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Arylthio, -Si(Q 1 )(Q 2 )(Q 3 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ).

[0100] In one or more embodiments, R 1 , R 1 '、R 11 and R 12 Can be independently:

[0101] Hydrogen, deuterium, -F or cyano;

[0102] Unsubstituted or substituted by C 1 -C 20Alkyl: deuterium, -F, cyano, phenyl, deuterated phenyl, fluorinated phenyl, (C 1 -C 20 alkyl)phenyl, biphenyl, deuterated biphenyl, fluorinated biphenyl, (C 1 -C 20 alkyl)biphenyl and / or (e.g., any suitable) combination thereof;

[0103] Each unsubstituted or substituted C 3 -C 10 Cycloalkyl, phenyl, naphthyl, carbazolyl, dibenzofuranyl or dibenzothiophenyl: deuterium, -F, cyano, C 1 -C 20 Alkyl, deuterated C 1 -C 20 Alkyl, fluorinated C 1 -C 20 Alkyl, C 3 -C 10 Cycloalkyl, deuterated C 3 -C 10 Cycloalkyl, fluorinated C 3 -C 10 Cycloalkyl, phenyl, deuterated phenyl, fluorinated phenyl, (C 1 -C 20 alkyl)phenyl, biphenyl, deuterated biphenyl, fluorinated biphenyl, (C 1 -C 20 alkyl)biphenyl and / or (eg, any suitable) combination thereof; or

[0104] -Si(Q 1 )(Q 2 )(Q 3 ).

[0105] In one or more embodiments, a11 may be an integer selected from 0 to 7.

[0106] In one or more embodiments, a12 may be an integer selected from 0 to 8.

[0107] In one or more embodiments, R 10a Can be:

[0108] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0109] Each unsubstituted or substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C1 -C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (e.g., any appropriate) combinations thereof;

[0110] Each unsubstituted or substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (e.g., any appropriate) combination thereof; or

[0111] -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 ),

[0112] Where Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C substituted with alkoxy, phenyl, biphenyl and / or any suitable combination thereof 3 -C60 Carbocyclic or C 1 -C 60 Heterocyclic group; C 7 -C 60 Aralkyl; or C 2 -C 60 Heteroaralkyl.

[0113] In one or more embodiments, the first body may be represented by Formula 1-1:

[0114] Formula 1-1

[0115]

[0116] Among them, in formula 1-1,

[0117] X 1 , L 11 , L 12 、n11、n12、Ar 11 , R 11 , R 12 , a11 and a12 may each independently be as described in this specification.

[0118] In one or more embodiments, the second host may be a compound represented by Formula 2:

[0119] Formula 2

[0120]

[0121] Among them, in formula 2,

[0122] In one or more embodiments, L 21 and L 22 may be independently: a single bond; or each unsubstituted or substituted by at least one R 10a substituted phenyl, naphthyl, fluorenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, azacarbazolyl, azadibenzofuranyl or azadibenzothiophenyl.

[0123] In one or more embodiments, n21 and n22 may be integers selected from 1 to 5.

[0124] In one or more embodiments, Ar 21 and Ar 22 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 5 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group.

[0125] In one or more embodiments, Ar 21 and Ar 22 may be each independently unsubstituted or substituted with at least one R 10a substituted phenyl, naphthyl, fluorenyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl, azacarbazolyl, azadibenzofuranyl or azadibenzothiophenyl.

[0126] In one or more embodiments, R 2 It may be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Arylthio, -Si(Q 1 )(Q 2 )(Q 3 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0127] a2 may be an integer selected from 0 to 8,

[0128] R 10a Can be:

[0129] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0130] Each unsubstituted or substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (e.g., any appropriate) combinations thereof;

[0131] Each unsubstituted or substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (e.g., any appropriate) combination thereof; or

[0132] -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 ),

[0133] Where Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C60 Alkynyl; C 1 -C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C substituted with alkoxy, phenyl, biphenyl and / or any suitable combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group; C 7 -C 60 Aralkyl; or C 2 -C 60 Heteroaralkyl.

[0134] In another embodiment, R 2 Can be: hydrogen, deuterium, -F or cyano;

[0135] Unsubstituted or substituted by C 1 -C 20 Alkyl: deuterium, -F, cyano, phenyl, deuterated phenyl, fluorinated phenyl, (C 1 -C 20 alkyl)phenyl, biphenyl, deuterated biphenyl, fluorinated biphenyl, (C 1 -C 20 alkyl)biphenyl and / or (e.g., any suitable) combination thereof;

[0136] Each unsubstituted or substituted C 3 -C 10 Cycloalkyl, phenyl, naphthyl, carbazolyl, dibenzofuranyl or dibenzothiophenyl: deuterium, -F, cyano, C 1 -C 20 Alkyl, deuterated C 1 -C 20 Alkyl, fluorinated C 1 -C 20 Alkyl, C 3 -C 10 Cycloalkyl, deuterated C 3 -C 10 Cycloalkyl, fluorinated C 3 -C 10 Cycloalkyl, phenyl, deuterated phenyl, fluorinated phenyl, (C 1 -C 20 alkyl)phenyl, biphenyl, deuterated biphenyl, fluorinated biphenyl, (C 1 -C 20 alkyl)biphenyl and / or (eg, any suitable) combination thereof; or

[0137] -Si(Q 1 )(Q 2 )(Q 3 ).

[0138] In one or more embodiments, the second body may be represented by Formula 2-1:

[0139] Formula 2-1

[0140]

[0141] Among them, in formula 2-1,

[0142] L 21 , L 22 、n21、n22、Ar 22 , R 2 and a2 may be as described in this specification, R 21 Refer to R 10a As described above, a21 may be an integer selected from 0 to 7.

[0143] In one or more embodiments, the first host can include at least one deuterium.

[0144] In one or more embodiments, the second host can include at least one deuterium.

[0145] In one or more embodiments, the first dopant and the second dopant may each independently be a compound represented by Formula 3-1 or a compound represented by Formula 3-2:

[0146] Formula 3-1

[0147]

[0148] Formula 3-2

[0149]

[0150] Among them, in formula 3-1 and formula 3-2,

[0151] In one or more embodiments, X may be B, P, or P═O.

[0152] In one or more embodiments, Y 1 and Y 2 can be independently N(R 3 )、O、S、Se、Si(R 3 )(R 3 ') or C(R 3 )(R 3 ').

[0153] In another embodiment, Y1 and Y 2 can be independently N(R 3 ).

[0154] In one or more embodiments, Z may be C(R 3 )(R 3 '), N(R 3 "), O, S or Se.

[0155] In one or more embodiments, R 3 , R 3 '、R 3 " and R 31 To R 33 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted by at least one R 10a Substituted C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Arylthio, -Si(Q 1 )(Q 2 )(Q 3 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0156] For example, R3 , R 3 '、R 3 " and R 31 To R 33 At least two of (or more selected from) thereof may be bonded to each other to form an unsubstituted or substituted R 10a Substituted C 5 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0157] a31 may be an integer selected from 0 to 4,

[0158] a32 may be an integer selected from 0 to 3,

[0159] a33 may be an integer selected from 0 to 4,

[0160] R 10a Can be:

[0161] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0162] Each unsubstituted or substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O) 2 (Q11 )、-P(=O)(Q 11 )(Q 12 ) and / or (e.g., any appropriate) combinations thereof;

[0163] Each unsubstituted or substituted C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (e.g., any appropriate) combination thereof; or

[0164] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ),

[0165] Where Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C substituted with alkoxy, phenyl, biphenyl and / or any suitable combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group; C 7 -C 60 Aralkyl; or C 2 -C 60 Heteroaralkyl.

[0166] In one or more embodiments, the sum of the thickness of the first emission layer and the thickness of the second emission layer may be about 100 angstroms. to about For example, the sum of the thickness of the first emission layer and the thickness of the second emission layer may be about to about about to about about to about about to about about to about about to about about to about about to about or about to about

[0167] In one or more embodiments, the thickness of the first emission layer or the thickness of the second emission layer may be each independently about to about For example, the thickness of the first emission layer or the thickness of the second emission layer may be independently about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about about to about or about to about

[0168] Specific examples of compounds

[0169] According to one or more embodiments, the first host and the second host may each independently be any one selected from Compound 1-1 to Compound 1-51 and / or a combination thereof (for example, any appropriate one):

[0170]

[0171]

[0172]

[0173] According to one or more embodiments, the first host may be Compound 1-49, and the second host may be Compound 1-50 or Compound 1-51.

[0174] According to one or more embodiments, the first dopant and the second dopant may be independently any one selected from the following compounds and / or any (eg, any appropriate) combination thereof:

[0175]

[0176]

[0177]

[0178]

[0179]

[0180]

[0181] In the case of the light-emitting device of the present disclosure, by including a first host having excellent or appropriate hole mobility and a second host having excellent or appropriate electron mobility, the charge balance within the light-emitting device can be improved or optimized.

[0182] For example, the first host and the second host may each include at least one deuterium, thereby not only maximizing or increasing the charge balance within the light-emitting device but also improving hole mobility and electron mobility.

[0183] In one or more embodiments, the light emitting device includes a first emission layer and a second emission layer or includes a first blue emission layer and a second blue emission layer, and the multi-layer emission layer includes a first host and a second host, respectively, so as to improve or optimize the charge balance in the light emitting device. In one or more embodiments, the charge in the emission layer can be effectively utilized by adjusting the thickness of each layer to control the transport of holes and electrons. Accordingly, the light emitting device can effectively utilize the charge by including a first emission layer and a second emission layer, each having a range of thickness as described herein.

[0184] In one or more embodiments, the light-emitting device includes a first host having excellent or appropriate hole mobility and luminous efficiency characteristics and a second host having excellent or appropriate electron mobility and lifetime characteristics in the first emission layer and the second emission layer, respectively, so that both luminous efficiency and lifetime characteristics can be ensured (for example, simultaneously).

[0185] For example, the first host satisfies an S of 0.05 eV. 1 Energy Level and T 2 The difference between the energy levels, thereby smoothly converting triplet excitons to singlet excitons and ensuring excellent or appropriate luminous efficiency characteristics.

[0186] In one or more embodiments, a light emitting device includes a first dopant and a second dopant, and the first dopant and the second dopant each include an asymmetric structure, thereby ensuring excellent or appropriate light emitting efficiency and a long lifespan.

[0187] In some embodiments,

[0188] The first electrode of the light emitting device may be an anode,

[0189] The second electrode of the light emitting device may be a cathode.

[0190] The interlayer may further include a hole transport region disposed between the first electrode and the first emission layer and an electron transport region disposed between the second emission layer and the second electrode,

[0191] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, and / or (eg, any appropriate) combination thereof, and

[0192] 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, and / or (eg, any appropriate) combinations thereof.

[0193] According to another embodiment, the first emission layer and the second emission layer may emit red light, green light, blue light and / or white light. For example, the first emission layer and the second emission layer may emit blue light. The blue light may have a maximum emission wavelength of, for example, about 400 nanometers (nm) to about 490 nm.

[0194] In one or more embodiments, the emission layer in the interlayer of the light-emitting device may include an additional dopant and a host. In some embodiments, the dopant may include a transition metal and a number m of ligands, m may be an integer selected from 1 to 6, the number m of ligands may be the same or different from each other, at least one of the number m of ligands may be bonded to the transition metal via a carbon-transition metal bond, and the carbon-transition metal bond may be a coordination bond. For example, at least one of the number m of ligands may be a carbene ligand (e.g., Ir(pmp) 3The transition metal may be, for example, iridium, platinum, osmium, palladium, rhodium or gold. The emission layer and dopant may be the same as described in the present specification.

[0195]

[0196] In one or more embodiments, the light emitting device may include a capping layer located outside the first electrode and / or outside the second electrode.

[0197] For example, 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. More details of the first capping layer and / or the second capping layer may be independently as described in this specification.

[0198] In one or more embodiments, the light emitting device may further include:

[0199] A first capping layer arranged outside the first electrode;

[0200] a second capping layer arranged outside the second electrode; or

[0201] A first capping layer and a second capping layer.

[0202] The term "interlayer" as used herein refers to a single layer and / or each (eg, all) of a plurality of layers located between a first electrode and a second electrode of a light emitting device.

[0203] In one or more embodiments, the interlayer may include m light emitting units and m-1 charge generating units between adjacent (eg, neighboring) light emitting units of the m light emitting units, and

[0204] m may be an integer of 2 or more.

[0205] At least (eg, each or any) one of the m light emitting units may include a first emission layer and a second emission layer. The first emission layer and the second emission layer may each be as described elsewhere in this specification.

[0206] The light emitting device may include m-1 charge generating units between adjacent (eg, neighboring) light emitting units of the m light emitting units.

[0207] In one or more embodiments, the m-1th charge generation unit may be included between the m-th light emitting unit and the m-1th light emitting unit. For example, m may be a natural number of 2 or more. In one or more embodiments, m may be a natural number selected from 2 to 10.

[0208] In one or more embodiments, m may be 4.

[0209] According to one or more embodiments, m may be 4 or greater.

[0210] For example, if (for example, when) m is 2, the first electrode, the first light emitting unit, the first charge generating unit, and the second light emitting unit may be arranged in sequence. In this regard, the first light emitting unit may emit a first color light, the second light emitting unit may emit a second color light, and the maximum emission wavelength of the first color light and the maximum emission wavelength of the second color light may be the same as or different from each other.

[0211] In some embodiments, if (for example, when) m is 3, the first electrode, the first light-emitting unit, the first charge generating unit, the second light-emitting unit, the second charge generating unit, and the third light-emitting unit may be arranged in sequence. In this regard, the first light-emitting unit may emit a first color light, the second light-emitting unit may emit a second color light, and the third light-emitting unit may emit a third color light, and the maximum emission wavelength of the first color light, the maximum emission wavelength of the second color light, and the maximum emission wavelength of the third color light may be the same as or different from each other.

[0212] In some embodiments, if (for example, when) m is 4, the first electrode, the first light-emitting unit, the first charge generating unit, the second light-emitting unit, the second charge generating unit, the third light-emitting unit, the third charge generating unit, and the fourth light-emitting unit may be arranged in sequence. In this regard, the first light-emitting unit may emit a first color light, the second light-emitting unit may emit a second color light, the third light-emitting unit may emit a third color light, and the fourth light-emitting unit may emit a fourth color light, and the maximum emission wavelength of the first color light, the maximum emission wavelength of the second color light, the maximum emission wavelength of the third color light, and the maximum emission wavelength of the fourth color light may be the same as or different from each other.

[0213] In one or more embodiments, a maximum emission wavelength of light emitted from at least one of the m light emitting cells may be different from a maximum emission wavelength of light emitted from at least one of the remaining light emitting cells.

[0214] In the light emitting device according to one or more embodiments, at least one of the m light emitting units may include a first emission layer and a second emission layer.

[0215] For example, the m-th light emitting unit close to the first electrode may include a first emission layer and a second emission layer.

[0216] See also Figure 2 Among the m light emitting cells, the m-th light emitting cell close to the first electrode 110 may be referred to as the m-th light emitting cell 145 (m).

[0217] Among the m light-emitting units, the light-emitting unit closest to the first electrode 110 is the first light-emitting unit 145(1), and the light-emitting unit farthest from the first electrode 110 is the m-th light-emitting unit 145(m), and the first light-emitting unit 145(1) to the m-th light-emitting unit 145(m) are arranged in sequence. For example, the (m-1)-th light-emitting unit 145(m-1) may be arranged between the first electrode 110 and the m-th light-emitting unit 145(m).

[0218] According to another embodiment, the light emitting device of the present disclosure includes:

[0219] a first electrode;

[0220] a second electrode facing the first electrode; and

[0221] an interlayer disposed between the first electrode and the second electrode and comprising an emitting layer, wherein

[0222] The emission layer includes a red emission layer, a green emission layer and a blue emission layer.

[0223] The blue emission layer includes a first blue emission layer and a second blue emission layer arranged between the first blue emission layer and the second electrode,

[0224] The first blue emission layer includes a first host and a first dopant,

[0225] The second blue emission layer includes a second host and a second dopant,

[0226] The first blue emission layer directly contacts the second blue emission layer,

[0227] The first subject has a normalized efficiency of 0.8 or less,

[0228] The second subject has a normalized efficiency of 0.95 or greater, and

[0229] Each of the first dopant and the second dopant is an asymmetric compound containing at least one cyclic group, wherein the at least one cyclic group contains each of boron (B) and nitrogen (N) as a ring-forming atom (for example, at least one cyclic group includes B and N, and each of the included B and N is a ring-forming atom).

[0230] In this regard, the first blue emission layer and the second blue emission layer may be understood in more detail by referring to the description of the first emission layer and the second emission layer provided herein. Accordingly, the first host and the first dopant included in the first emission layer and the second host and the second dopant included in the second emission layer may also be understood in more detail by referring to the description of the device provided herein in combination with the present disclosure.

[0231] In one or more embodiments, the interlayer may include m light-emitting units and m-1 charge generation units between adjacent light-emitting units among the m light-emitting units.

[0232] m can be an integer of 2 or greater,

[0233] Any one of the m light emitting units may include a red emission layer, a green emission layer, and a blue emission layer.

[0234] For example, Figure 4 One or more embodiments are schematically shown in which m=2.

[0235] See also Figure 4 , a light emitting device according to one or more embodiments includes: a first electrode (anode) 110; a second electrode (cathode) 150 facing the first electrode 110;

[0236] two light emitting units located between the first electrode 110 and the second electrode 150; and

[0237] A charge generation unit located between two light emitting units. The charge generation unit includes an n-type or n-like charge generation layer nCGL (eg, n-charge generation layer) and a p-type or p-like charge generation layer pCGL (eg, p-charge generation layer).

[0238] The first light emitting unit includes a first red sub-pixel including a red emission layer R-EML, a first green sub-pixel including a green emission layer G-EML, and a first blue sub-pixel including a blue emission layer B-EML.

[0239] The second light emitting unit includes a second red sub-pixel including a red emission layer R-EML, a second green sub-pixel including a green emission layer G-EML, and a second blue sub-pixel including a first blue emission layer first B-EML and a second blue emission layer second B-EML.

[0240] The hole injection layer HIL and the hole transport layer HTL may be located between the first electrode 110 and the first light emitting unit as a common layer, and the electron transport layer ETL may be located between the first light emitting unit and the charge generation layer, and the electron transport layer ETL and the electron injection layer EIL may be located between the second light emitting unit and the second electrode 150. The hole injection layer HIL, the hole transport layer HTL, the electron transport layer ETL, and the electron injection layer EIL may each be a common layer.

[0241] Another aspect of the present disclosure provides an electronic device including a light emitting device. The electronic device may further include a thin film transistor. For example, the electronic device may further include a thin film transistor, the thin film transistor including a source electrode and a drain electrode, wherein the first electrode of the light emitting device may be electrically connected to the source electrode or the drain electrode. In one or more embodiments, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer and / or a combination thereof (e.g., any appropriate one). For more details of the electronic device, reference may be made to the relevant description provided herein.

[0242] Figures 1 to 4 Description

[0243] Figures 1 to 4 Each is a schematic cross-sectional view of a light emitting device 10 according to one or more embodiments. The light emitting device 10 includes a first electrode 110 , an interlayer 130 , and a second electrode 150 .

[0244] In one or more embodiments, see Figure 2 The interlayer of the light-emitting device may include m light-emitting units 145(1)...145(m-1) and 145(m) and m-1 charge generating units 144(m-1) between adjacent light-emitting units, wherein one of the m light-emitting units may include a first emission layer and a second emission layer.

[0245] Figure 3 A light emitting device is shown if (for example, when) m is 4. One of the four light emitting units 145(1), 145(2), 145(3), and 145(4) may include a first emission layer and a second emission layer. In addition, the light emitting device may further include charge generating units 144(1), 144(2), and 144(3).

[0246] Figure 4 A cross-sectional view of a light emitting device 10 according to one or more embodiments is schematically shown.

[0247] In the following, reference will be made to Figures 1 to 4 The structure and manufacturing method of the light emitting device 10 according to one or more embodiments are described.

[0248] First electrode 110

[0249] exist Figure 1In the embodiment, the substrate may be further located under the first electrode 110 or on the second electrode 150. As the substrate, a glass substrate or a plastic substrate may be used. In one or more embodiments, the substrate may be a flexible substrate and may include plastics having excellent or appropriate heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide and / or (e.g., any appropriate) combination thereof.

[0250] The first electrode 110 may be formed by, for example, depositing or sputtering a material for forming (or providing) the first electrode 110 on a substrate. When the first electrode 110 is an anode, the material for forming (or providing) the first electrode 110 may be a high work function material that facilitates injection of holes.

[0251] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, a material for forming (or providing) the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 ), zinc oxide (ZnO), and / or (for example, any appropriate) combination thereof. In one or more embodiments, if (for example, when) the first electrode 110 is a semi-transmissive electrode or a reflective electrode (when), the material used to form (or provide) the first electrode 110 may include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), and / or (for example, any appropriate) combination thereof.

[0252] The first electrode 110 may have a single-layer structure including (eg, consisting of) a single layer, or a multi-layer structure including a plurality of layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0253] Mezzanine 130

[0254] The interlayer 130 may be located on the first electrode 110. The interlayer 130 may include an emission layer.

[0255] The interlayer 130 may further include a hole transport region between the first electrode 110 and the emission layer and an electron transport region between the emission layer and the second electrode 150 .

[0256] In addition to one or more suitable organic materials, the interlayer 130 may further include metal-containing compounds (such as organometallic compounds) and / or inorganic materials (such as quantum dots), etc.

[0257] In one or more embodiments, the interlayer 130 may include, i) two or more light emitting units sequentially stacked between the first electrode 110 and the second electrode 150, and ii) a charge generation layer located between the two or more light emitting units. When the interlayer 130 includes the light emitting units and the charge generation layer as described herein, the light emitting device 10 may be a tandem light emitting device.

[0258] Hole transport region in interlayer 130

[0259] The hole transport region may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of different materials, or iii) a multilayer structure including a plurality of layers including different materials.

[0260] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, and / or (eg, any appropriate) combinations thereof.

[0261] For example, the hole transport region may have a multi-layer structure, including a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission auxiliary layer structure, a hole injection layer / emission auxiliary layer structure, a hole transport layer / emission auxiliary layer structure or a hole injection layer / hole transport layer / emission auxiliary layer structure, and the layers of each structure are stacked in sequence from the first electrode 110.

[0262] The hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, and / or a combination thereof (eg, any appropriate combination):

[0263] Formula 201

[0264]

[0265] Formula 202

[0266]

[0267] Among them, in equation 201 and equation 202,

[0268] L 201 To L 204 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0269] L 205 Can be *-O-*', *-S-*', *-N(Q 201 )-*', unsubstituted or replaced by at least one R 10a Substituted C 1 -C 20 Alkylene, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 20 Alkenylene, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0270] xa1 to xa4 may each independently be an integer selected from 0 to 5,

[0271] xa5 may be an integer selected from 1 to 10,

[0272] R 201 To R 204 and Q 201 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0273] R 201 and R 202 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C 1 -C 5 Alkylene is either unsubstituted or substituted with at least one R 10a Substituted C 2 -C 5 The alkenylene groups are connected to each other to form an unsubstituted or substituted R 10a Substituted C 8 -C 60 Polycyclic groups (eg, carbazole groups, etc.) (eg, compound HT16, etc.).

[0274] R 203 and R 204 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C 1 -C 5 Alkylene is either unsubstituted or substituted with at least one R10a Substituted C 2 -C 5 The alkenylene groups are connected to each other to form an unsubstituted or substituted R 10a Substituted C 8 -C 60 polycyclic groups, and

[0275] na1 may be an integer selected from 1 to 4.

[0276] For example, each of Formula 201 and Formula 202 may include at least one of the groups represented by Formula CY201 to Formula CY217 (eg, at least one selected from the groups represented by Formula CY201 to Formula CY217):

[0277]

[0278] In formula CY201 to formula CY217, R 10b and R 10c For R 10a Described, Cyclic 201 To Ring CY 204 Can be independently C 3 -C 20 Carbocyclic or C 1 -C 20 heterocyclic group, and at least one hydrogen in Formula CY201 to Formula CY217 may be unsubstituted or replaced by R as described herein 10a replaced.

[0279] In one or more embodiments, ring CY in formula CY201 to formula CY217 201 To Ring CY 204 Each independently may be phenyl, naphthyl, phenanthryl or anthracenyl.

[0280] In one or more embodiments, each of Formula 201 and Formula 202 may include at least one of the groups represented by Formula CY201 to Formula CY203.

[0281] In one or more embodiments, Formula 201 may include at least one of the groups represented by Formulas CY201 to CY203 and at least one of the groups represented by Formulas CY204 to CY217.

[0282] In one or more embodiments, in Formula 201, xa1 may be 1, R 201 may be a group represented by one of the formulas CY201 to CY203, xa2 may be 0, and R 202 It may be a group represented by one of Formula CY204 to Formula CY207.

[0283] In one or more embodiments, each of Formula 201 and Formula 202 may not include (eg, may exclude) a group represented by one of Formula CY201 to Formula CY203.

[0284] In one or more embodiments, each of Formula 201 and Formula 202 may not include (eg, may exclude) a group represented by one of Formula CY201 to Formula CY203, and may include at least one of the groups represented by Formula CY204 to Formula CY217.

[0285] In one or more embodiments, each of Formula 201 and Formula 202 may not include (eg, may exclude) a group represented by one of Formula CY201 to Formula CY217.

[0286] In one or more embodiments, the hole transport region may include (for example, selected from) at least one of compounds HT1 to HT46, m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiro-TPD, spiro-NPB, methylated NPB, TAPC, HMTPD, 4,4',4"-tri(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), and / or (for example, any appropriate) combination thereof:

[0287]

[0288]

[0289]

[0290]

[0291]

[0292] The thickness of the hole transport region may be about to about For example, about to about When the hole transport region includes a hole injection layer, a hole transport layer, and / or a combination thereof (for example, any appropriate combination), the thickness of the hole injection layer may be about to about For example, about to about and the thickness of the hole transport layer may be in the range of about to about For example, about to about When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within these ranges, satisfactory hole transport characteristics can be obtained without significantly increasing the driving voltage.

[0293] The emission auxiliary layer can increase the luminous efficiency by compensating the optical resonance distance according to the wavelength of the light emitted by the emission layer, and the electron blocking layer can block or reduce the leakage of electrons from the emission layer to the hole transport region. The materials that can be included in the hole transport region can be included in the emission auxiliary layer and the electron blocking layer.

[0294] p-dopant

[0295] In addition to these materials, the hole transport region may further include a charge generation material for improvement of the conductive properties. The charge generation material may be dispersed uniformly (substantially uniformly) or non-uniformly (substantially non-uniformly) in the hole transport region (e.g., in the form of a single layer including (e.g., consisting of) the charge generation material).

[0296] The charge generating material may be, for example, a p-dopant.

[0297] For example, the lowest unoccupied molecular orbital (LUMO) energy level of the p-dopant may be -3.5 eV or less.

[0298] In one or more embodiments, the p-dopant may include a quinone derivative, a cyano-containing compound, a compound including the element EL1 and the element EL2, and / or (eg, any appropriate) combinations thereof.

[0299] Examples of quinone derivatives are TCNQ and / or F4-TCNQ, and the like.

[0300] Examples of cyano-containing compounds may be HAT-CN and compounds represented by Formula 221:

[0301]

[0302] Formula 221

[0303]

[0304] In formula 221,

[0305] R 221 To R 223 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R10a Substituted C 1 -C 60 a heterocyclic group, and

[0306] R 221 To R 223 At least one of them may be independently C each substituted by 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group: cyano; -F; -Cl; -Br; -I; C substituted by cyano, -F, -Cl, -Br, -I and / or any appropriate combination thereof 1 -C 20 an alkyl group; and / or (eg, any suitable) combinations thereof.

[0307] In a compound including element EL1 and element EL2, element EL1 may be a metal, a metalloid, and / or (eg, any appropriate) combination thereof, and element EL2 may be a nonmetal, a metalloid, and / or (eg, any appropriate) combination thereof.

[0308] Examples of metals are alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), and / or cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), and / or barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), etc.). ), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag) and / or gold (Au), etc.); late transition metals (e.g., zinc (Zn), indium (In) and / or tin (Sn), etc.); and lanthanide metals (e.g., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and / or lutetium (Lu), etc.).

[0309] Examples of metalloids are silicon (Si), antimony (Sb), and tellurium (Te).

[0310] Examples of non-metals are oxygen (O) and halogens (eg, F, Cl, Br, and / or I, etc.).

[0311] Examples of compounds including element EL1 and element EL2 are metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, or metal iodides), metalloid halides (e.g., metalloid fluorides, metalloid chlorides, metalloid bromides, or metalloid iodides), metal tellurides, and / or (e.g., any appropriate) combinations thereof.

[0312] Examples of metal oxides are tungsten oxides (e.g., WO, W 2 O 3 , WO 2 , WO 3 and / or W 2 O 5 etc.), vanadium oxides (e.g., VO, V 2 O 3 , VO 2 and / or V 2 O 5 etc.), molybdenum oxides (e.g., MoO, Mo 2 O 3 、MoO 2 、MoO 3 and / or Mo 2 O 5 etc.) and rhenium oxides (e.g., ReO 3 wait).

[0313] Examples of the metal halide are alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

[0314] Examples of alkali metal halides are LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and CsI.

[0315] An example of an alkaline earth metal halide is BeF 2 MgF 2 , CaF 2 , SrF 2 , BaF 2 、BeCl 2 MgCl 2 , CaCl 2 、SrCl 2 、BaCl 2 ,BeBr 2 MgBr 2 , CaBr 2 , SrBr 2 ,BaBr 2 ,BeI 2MgI 2 ,CaI 2 , SrI 2 and BaI 2 .

[0316] Examples of transition metal halides are titanium halides (e.g., TiF 4 、TiCl 4 、TiBr 4 and / or TiI 4 etc.), zirconium halides (e.g., ZrF 4 、ZrCl 4 , ZrBr 4 and / or ZrI 4 etc.), hafnium halides (e.g., HfF 4 , HfCl 4 , HfBr 4 and / or HfI 4 etc.), vanadium halides (e.g., VF 3 、VCl 3 , VBr 3 and / or VI 3 etc.), niobium halides (e.g., NbF 3 、NbCl 3 , NbBr 3 and / or NbI 3 etc.), tantalum halides (e.g., TaF 3 、TaCl 3 、TaBr 3 and / or TaI 3 etc.), chromium halides (e.g., CrF 3 CrCl 3 CrBr 3 and / or CrI 3 etc.), molybdenum halides (e.g., MoF 3 、MoCl 3 、MoBr 3 and / or MoI 3 etc.), tungsten halides (e.g., WF 3 、WCl 3 , WBr 3 and / or WI 3 etc.), manganese halides (e.g., MnF 2 、MnCl 2 、MnBr 2 and / or MnI 2 etc.), technetium halides (e.g., TcF 2 , TcCl 2 , TcBr 2 and / or TcI 2etc.), rhenium halides (e.g., ReF 2 、ReCl 2 、ReBr 2 and / or ReI 2 etc.), ferrous halides (e.g., FeF 2 、FeCl 2 , FeBr 2 and / or FeI 2 etc.), ruthenium halides (e.g., RuF 2 、RuCl 2 ,RuBr 2 and / or RuI 2 etc.), osmium halides (e.g., OsF 2 , OsCl 2 、OsBr 2 and / or OsI 2 etc.), cobalt halides (e.g., CoF 2 、CoCl 2 ,CoBr 2 and / or CoI 2 etc.), rhodium halides (e.g., RhF 2 , RhCl 2 , RhBr 2 and / or RhI 2 etc.), iridium halides (e.g., IrF 2 、IrCl 2 ,IrBr 2 and / or IrI 2 etc.), nickel halides (e.g., NiF 2 、NiCl 2 、NiBr 2 and / or NiI 2 etc.), palladium halides (e.g., PdF 2 , PdCl 2 , PdBr 2 and / or PdI 2 etc.), platinum halides (e.g., PtF 2 、PtCl 2 , PtBr 2 and / or PtI 2 etc.), cuprous halides (e.g., CuF, CuCl, CuBr and / or CuI, etc.), silver halides (e.g., AgF, AgCl, AgBr and / or AgI, etc.), and gold halides (e.g., AuF, AuCl, AuBr and / or AuI, etc.).

[0317] Examples of late transition metal halides are zinc halides (e.g., ZnF 2 、ZnCl 2 、ZnBr2 and / or ZnI 2 etc.), indium halides (e.g., InI 3 etc.) and tin halides (e.g., SnI 2 wait).

[0318] Examples of lanthanide metal halides may include YbF, YbF 2 , YbF 3 、SmF 3 、YbCl、YbCl 2 YbCl 3 、SmCl 3 , YbBr, YbBr 2 , YbBr 3 、SmBr 3 、YbI、YbI 2 ,YbI 3 and / or SmI 3 wait.

[0319] Examples of metalloid halides are antimony halides (e.g., SbCl 5 wait).

[0320] Examples of metal tellurides are alkali metal tellurides (e.g., Li 2 Te、Na 2 Te, K 2 Te、Rb 2 Te and / or Cs 2 Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe and / or BaTe, etc.), transition metal tellurides (e.g., TiTe 2 、ZrTe 2 、HfTe 2 、V 2 Te 3 , Nb 2 Te 3 、 2 Te 3 Cr 2 Te 3 、Mo 2 Te 3 , W 2 Te 3 , MnTe, TcTe, ReTe, FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu 2 Te, CuTe, Ag 2 Te, AgTe and / or Au 2Te, etc.), late transition metal tellurides (e.g., ZnTe, etc.), and lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe and / or LuTe, etc.).

[0321] Emission layer in interlayer 130

[0322] When the light-emitting device 10 is a full-color light-emitting device, the emission layer may be patterned into a red emission layer, a green emission layer, and / or a blue emission layer according to the sub-pixel. In one or more embodiments, the emission layer may have a stacked structure of two or more layers of a red emission layer, a green emission layer, and a blue emission layer, wherein the two or more layers are in contact with each other or separated from each other to emit white light. In one or more embodiments, the emission layer may include two or more materials of a red light-emitting material, a green light-emitting material, and a blue light-emitting material, wherein the two or more materials are mixed with each other in a single layer to emit white light.

[0323] The emissive layer may include a host and a dopant. The dopant may include a phosphorescent dopant, a fluorescent dopant, and / or a combination thereof (eg, any suitable combination).

[0324] The amount of the dopant in the emission layer may be about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host.

[0325] In one or more embodiments, the emissive layer may include quantum dots.

[0326] In one or more embodiments, the emission layer may include a delayed fluorescent material. The delayed fluorescent material may act as a host or a dopant in the emission layer.

[0327] The thickness of the emission layer can be about to about For example, about to about When the thickness of the emission layer is within these ranges, excellent or appropriate light emission characteristics can be obtained without significantly increasing the driving voltage.

[0328] main body

[0329] In one or more embodiments, the host may include a compound represented by Formula 301:

[0330] Formula 301

[0331] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21,

[0332] Wherein, in Formula 301,

[0333] Ar 301 and L 301 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0334] xb11 can be 1, 2 or 3,

[0335] xb1 may be an integer selected from 0 to 5,

[0336] R 301 It may be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C 2 -C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 301 )(Q 302 )(Q 303 )、-N(Q 301 )(Q 302 )、-B(Q 301 )(Q 302 )、-C(=O)(Q 301 )、-S(=O) 2 (Q 301 ) or -P(=O)(Q 301 )(Q 302 ),

[0337] xb21 may be an integer selected from 1 to 5, and

[0338] Q 301 To Q 303 As in this article, Q 1 Described.

[0339] For example, when xb11 in Formula 301 is 2 or greater, two or more Ar 301 Can be connected to each other via a single bond.

[0340] In one or more embodiments, the host may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, and / or (eg, any appropriate) combination thereof:

[0341] Formula 301-1

[0342]

[0343] Formula 301-2

[0344]

[0345] Among them, in Formula 301-1 and Formula 301-2,

[0346] Ring A 301 To Ring A 304 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0347] X 301 Can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 )(R 305 ) or Si(R 304 )(R 305 ),

[0348] xb22 and xb23 can each independently be 0, 1 or 2,

[0349] L 301 , xb1 and R 301 may each be as described herein,

[0350] L 302 To L 304 can be independently defined as in this article for L 301 Described,

[0351] xb2 to xb4 may each independently be as described herein for xb1, and

[0352] R 302 To R 305 and R 311 To R 314 As in this article, R 301 Described.

[0353] In one or more embodiments, the host may include an alkaline earth metal complex, a late transition metal complex, and / or a combination thereof (e.g., any suitable combination thereof). For example, the host may include a Be complex (e.g., compound H55), a Mg complex, a Zn complex, and / or a combination thereof (e.g., any suitable combination thereof).

[0354] In one or more embodiments, the host may include at least one selected from Compound H1 to Compound H128, 9,10-di(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), 9,10-di(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), 1,3-di(9-carbazolyl)benzene (mCP), 1,3,5-tri(carbazolyl-9-yl)benzene (TCP), and / or (e.g., any appropriate) combination thereof:

[0355]

[0356]

[0357]

[0358]

[0359]

[0360]

[0361]

[0362] Phosphorescent dopants

[0363] In one or more embodiments, the phosphorescent dopant may include at least one transition metal as a central metal.

[0364] The phosphorescent dopant may include a monodentate ligand, a bidentate ligand, a tridentate ligand, a tetradentate ligand, a pentadentate ligand, a hexadentate ligand, and / or (eg, any suitable) combinations thereof.

[0365] The phosphorescent dopant may be electrically neutral.

[0366] For example, the phosphorescent dopant may include an organometallic compound represented by Formula 401:

[0367] Formula 401

[0368] M(L 401 ) xc1 (L 402 ) xc2

[0369] Formula 402

[0370]

[0371] Among them, in equation 401 and equation 402,

[0372] M may be a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)),

[0373] L 401 may be a ligand represented by Formula 402, and xc1 may be 1, 2 or 3, wherein when xc1 is 2 or greater, two or more L 401 may be the same or different from each other,

[0374] L 402 may be an organic ligand, and xc2 may be 0, 1, 2, 3 or 4, and when xc2 is 2 or greater, two or more L 402 may be the same or different from each other,

[0375] X 401 and X 402 may each independently be nitrogen or carbon,

[0376] Ring A 401 and Ring A 402 Can be independently C 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group,

[0377] 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=*',

[0378] X 403 and X 404 can be independently a chemical bond (e.g., a covalent bond or a coordination bond), O, S, N (Q 413 )、B(Q 413 )、P(Q 413 )、C(Q 413 )(Q 414 ) or Si(Q 413 )(Q 414 ),

[0379] Q 411 To Q 414 As in this article, Q 1 Described,

[0380] R 401 and R 402 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted by at least one R 10a Substituted C 1 -C 20 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 401 )(Q 402 )(Q 403 )、-N(Q 401 )(Q 402 )、-B(Q 401 )(Q 402 )、-C(=O)(Q 401 )、-S(=O) 2 (Q 401 ) or -P(=O)(Q 401 )(Q 402 ),

[0381] Q 401 To Q 403 As in this article, Q 1 Described,

[0382] xc11 and xc12 may each independently be an integer selected from 0 to 10, and

[0383] * and *' in Formula 402 each indicate a binding site with M in Formula 401.

[0384] For example, in equation 402, i)X 401 may be nitrogen, and X 402 Can be carbon, or ii) X 401 and X 402 Each of may be nitrogen.

[0385] In one or more embodiments, when xc1 in Formula 401 is 2 or greater, two or more L 401 The two rings A 401 Optionally, T as a linking group 402 bonded to each other, and two or more L 401 The two rings A 402 Optionally, T as a linking group 403 Bonded to each other (see Compound PD1 to Compound PD4 and Compound PD7). 402 and T 403 As in this article, T 401 Described.

[0386] L in Formula 401 402 It can be an organic ligand. For example, L 402 It may include a halogen group, a diketone group (e.g., an acetylacetonate group), a carboxylic acid group (e.g., a picolinate group), -C(=O), an isonitrile group, a -CN group, a phosphorus-containing group (e.g., a phosphine group and / or a phosphite group, etc.) and / or their (e.g., any appropriate) combinations.

[0387] The phosphorescent dopant may include, for example, at least one of (eg, selected from) Compound PD1 to Compound PD39 and / or (eg, any appropriate) combination thereof:

[0388]

[0389]

[0390]

[0391] Fluorescent dopants

[0392] The fluorescent dopant may include an amine group-containing compound, a styrene group-containing compound, and / or (eg, any appropriate) combinations thereof.

[0393] For example, the fluorescent dopant may include at least one compound represented by Formula 501:

[0394] Formula 501

[0395]

[0396] Wherein, in Formula 501,

[0397] Ar 501 , L 501 To L 503 , R 501 and R 502 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0398] xd1 to xd3 may each independently be 0, 1, 2 or 3, and

[0399] xd4 can be 1, 2, 3, 4, 5 or 6.

[0400] For example, Ar in Formula 501 501 It may be a condensed ring group in which three or more monocyclic groups are condensed together (for example, anthracenyl, 1,2-triphenylenyl and / or pyrene, etc.).

[0401] In one or more embodiments, xd4 in equation 501 may be 2.

[0402] In one or more embodiments, the fluorescent dopant may include: at least one of (eg, selected from) compounds FD1 to FD37; DPVBi; DPAVBi; and / or (eg, any appropriate) combinations thereof:

[0403]

[0404]

[0405]

[0406] Delayed fluorescence materials

[0407] The emitting layer may include a delayed fluorescent material.

[0408] In the present specification, the delayed fluorescent material may be (eg, selected from) a compound capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0409] The delayed fluorescent material included in the emission layer may act as a host or a dopant depending on the types or kinds of other materials included in the emission layer.

[0410] In one or more embodiments, the difference between the triplet energy level (eV) of the delayed fluorescent material and the singlet energy level (eV) of the delayed fluorescent material may be greater than or equal to 0 eV and less than or equal to 0.5 eV. When the difference between the triplet energy level (eV) of the delayed fluorescent material and the singlet energy level (eV) of the delayed fluorescent material satisfies the range described herein, up-conversion of the delayed fluorescent material from the triplet state to the singlet state may effectively occur, and therefore, the luminous efficiency of the light-emitting device 10 may be improved.

[0411] For example, the delayed fluorescent material may include: i) at least one electron donor (eg, a π-electron-rich C 3 -C 60 Cyclic groups, such as carbazolyl, etc.) and at least one electron acceptor (for example, sulfoxide, cyano or π-electron-deficient nitrogen-containing C 1 -C 60 cyclic groups, etc.), and ii) a C in which two or more cyclic groups are fused while sharing boron (B) 8 -C 60 Polycyclic materials.

[0412] Examples of the delayed fluorescent material may include (eg, selected from) at least one of Compound DF1 to Compound DF14:

[0413]

[0414]

[0415] quantum dots

[0416] The emissive layer may include quantum dots.

[0417] The term "quantum dot" as used herein refers to a crystal of a semiconductor compound and may include any material capable of emitting light of one or more appropriate emission wavelengths depending on the size of the crystal. The quantum dot may emit light of one or more appropriate emission wavelengths by adjusting the ratio of elements in the quantum dot compound.

[0418] The diameter of the quantum dots can be in the range of, for example, about 1 nanometer (nm) to about 10 nm. Unless otherwise defined, in the present disclosure, the term "particle size" or "quantum dot size" refers to the average diameter if (for example, when) the particles or dots are spherical, and refers to the average major axis length if (for example, when) the particles or dots are non-spherical. The particle size or dot size can be measured by using a particle size analyzer (PSA) or from a transmission electron microscope (TEM) image or a scanning electron microscope (SEM) image. "Particle size" or "dot size" is, for example, the average particle size or average dot size. "Average particle size" or "average dot size" refers to, for example, the median particle size or dot size (D50 ), which refers to the diameter of particles or points with a cumulative volume of 50 vol% in a particle size or grain size distribution. As another method, a dynamic light scattering measurement device can be used for measurement and data analysis, the number of particles or points can be counted for each particle size or point size range, and then the average particle diameter or average point diameter (D) can be obtained by calculation. 50 In some embodiments, the average particle size or average point diameter (D 50 ) can be measured by using a laser diffraction method. If (for example, when) measurement is performed by the laser diffraction method, for example, particles or spots to be measured may be dispersed in a dispersion medium, and then a commercially available laser diffraction particle or spot size measuring device (for example, Microtrac MT3000) may be used to irradiate with ultrasonic waves of about 28 kHz at an output of 60 W, and then an average particle diameter or spot diameter (D ) based on 50% of the particle diameter or spot diameter distribution in the measuring device may be calculated. 50 ).

[0419] The quantum dots may be synthesized by a wet chemical process, a metal organic chemical vapor deposition (MOCVD) process, a molecular beam epitaxy (MBE) process, or any process similar thereto.

[0420] The wet chemical process is a method that includes mixing a precursor material with an organic solvent and then growing a quantum dot particle crystal. When the quantum dot particle crystal grows, the organic solvent naturally acts as a dispersant coordinated on the surface of the quantum dot particle crystal and controls the growth of the quantum dot particle crystal so that the growth of the quantum dot particle crystal can be controlled or selected by a process that is low in cost and easier than a vapor deposition method (such as metal organic chemical vapor deposition or molecular beam epitaxy).

[0421] Quantum dots may include Group II-VI semiconductor compounds, Group III-V semiconductor compounds, Group III-VI semiconductor compounds, Group I-III-VI semiconductor compounds, Group IV-VI semiconductor compounds, Group IV elements or compounds and / or (e.g., any suitable) combinations thereof.

[0422] Examples of II-VI semiconductor compounds are binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe or MgS; ternary compounds such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, Cd ... dZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe or MgZnS; quaternary compounds, such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe or HgZnSTe; and / or (e.g., any suitable) combinations thereof.

[0423] Examples of III-V semiconductor compounds are binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs and / or InSb, etc.; ternary compounds such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs and / or InPSb, etc.; quaternary compounds such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs and / or InAlPSb, etc.; and / or (e.g., any appropriate) combinations thereof. In one or more embodiments, the III-V semiconductor compound may further include a Group II element. Examples of the Group III-V semiconductor compound further including a Group II element are InZnP, InGaZnP, and / or InAlZnP, and the like.

[0424] Examples of III-VI semiconductor compounds are: binary compounds such as GaS, GaSe, Ga 2 Se 3 、GaTe、InS、InSe、In 2 S 3 、In 2 Se 3 or InTe; ternary compounds, such as InGaS 3 or InGaSe 3; and / or (e.g., any appropriate) combinations thereof.

[0425] Examples of Group I-III-VI semiconductor compounds may include: ternary compounds such as AgInS, AgInS 2 、AgInSe 2 、AgGaS、AgGaS 2 、AgGaSe 2 、CuInS、CuInS 2 、CuInSe 2 、CuGaS 2 、CuGaSe 2 、CuGaO 2 、AgGaO 2 and / or AgAlO 2 etc.; quaternary compounds, such as AgInGaS 2 and / or AgInGaSe 2 etc.; and / or their (eg, any appropriate) combinations.

[0426] 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; and / or (e.g., any appropriate) combinations thereof.

[0427] The Group IV elements or compounds may include: single elements, such as Si or Ge; binary compounds, such as SiC or SiGe; and / or (eg, any suitable) combinations thereof.

[0428] Each element included in a multi-element compound such as a binary compound, a ternary compound, and a quaternary compound may be present in the particle in a substantially uniform concentration or in a non-substantially uniform concentration. For example, the aforementioned chemical formula refers to the type (species) of elements included in the compound, wherein the ratio of the elements in the compound may vary. For example, AgInGaS 2 AgIn x Ga 1-x S 2 (where x is a real number greater than 0 and less than 1).

[0429] In one or more embodiments, the quantum dot may have a single structure in which the concentration of each element in the quantum dot is substantially uniform, or a core-shell dual structure. For example, the material included in the core and the material included in the shell may be different from each other.

[0430] The shell of the quantum dot can act as a protective layer to prevent chemical denaturation of the core to maintain semiconductor properties and / or act 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 core and the shell can have a concentration gradient, wherein the concentration of the element present in the shell decreases toward the center of the core.

[0431] Examples of quantum dot shells may be metal, metalloid or non-metal oxides, semiconductor compounds, and / or (e.g., any suitable) combinations thereof. Examples of metal, metalloid or non-metal oxides are binary compounds, such as SiO 2 、Al 2 O 3 、TiO 2 、ZnO、MnO、Mn 2 O 3 , Mn 3 O 4 , CuO, FeO, Fe 2 O 3 , Fe 3 O 4 , CoO, Co 3 O 4 or NiO; ternary compounds, such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe 2 O 4 or CoMn 2 O 4 ; and / or (e.g., any suitable) combinations thereof. Examples of semiconductor compounds are Group II-VI semiconductor compounds as described herein; Group III-V semiconductor compounds; Group III-VI semiconductor compounds; Group I-III-VI semiconductor compounds; Group IV-VI semiconductor compounds; and / or (e.g., any suitable) combinations thereof. For example, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, and / or (e.g., any suitable) combinations thereof.

[0432] Each element included in a multi-element compound such as a binary compound and a ternary compound may be present in the particle in a substantially uniform or non-substantially uniform concentration. For example, the aforementioned chemical formula refers to the type (species) of the elements included in the compound, wherein the ratio of the elements in the compound may vary.

[0433] The full width at half maximum (FWHM) of the emission wavelength spectrum of the quantum dots may be about 45 nm or less, or about 40 nm or less, or about 30 nm or less, and within these ranges, color purity or color reproducibility may be increased. In one or more embodiments, because the light emitted by the quantum dots is emitted in all directions, a wide viewing angle may be improved.

[0434] In one or more embodiments, the quantum dots may be in the form of spherical nanoparticles, pyramidal nanoparticles, multi-armed nanoparticles, cubic nanoparticles, nanotubes, nanowires, nanofibers, or nanoplates.

[0435] Because the energy band gap can be adjusted by controlling the size of the quantum dots, light having one or more appropriate wavelength bands can be obtained from the quantum dot emission layer. Accordingly, by using quantum dots of different sizes, a light-emitting device that emits light of one or more appropriate wavelength bands can be realized. For example, the size of the quantum dots or the ratio of elements in the quantum dot compound can be selected to emit red light, green light, and / or blue light. In one or more embodiments, the size of the quantum dots can be configured to emit white light through a combination of one or more appropriate colors of light.

[0436] Electron transport region in interlayer 130

[0437] The electron transport region may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of different materials, or iii) a multilayer structure including a plurality of layers including different materials.

[0438] 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, and / or (eg, any appropriate) combinations thereof.

[0439] For example, the electron transport region may have an electron transport layer / electron injection layer structure, a hole blocking layer / electron transport layer / electron injection layer structure, an electron control layer / electron transport layer / electron injection layer structure, or a buffer layer / electron transport layer / electron injection layer structure, and the constituent layers of each structure are stacked in sequence from the emission layer.

[0440] In one or more embodiments, the electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer in the electron transport region) may include a metal-free compound including at least one π-electron-deficient nitrogen-containing C 1 -C 60 Cyclic group.

[0441] For example, the electron transport region may include a compound represented by Formula 601:

[0442] Formula 601

[0443] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 ,

[0444] Wherein, in Formula 601,

[0445] Ar 601 and L 601 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0446] xe11 can be 1, 2 or 3,

[0447] xe1 can be 0, 1, 2, 3, 4 or 5,

[0448] R 601 may be unsubstituted or substituted with at least one R 10a Substituted C 3 -C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -Si(Q 601 )(Q 602 )(Q 603 )、-C(=O)(Q 601 )、-S(=O) 2 (Q 601 ) or -P(=O)(Q 601 )(Q 602 ),

[0449] Q 601 To Q 603 As in this article, Q 1 Described,

[0450] xe21 can be 1, 2, 3, 4 or 5,

[0451] Ar 601 , L 601 and R 601At least one of them may be independently unsubstituted or substituted by at least one R 10a Substituted π-electron-deficient nitrogen-containing C 1 -C 60 Cyclic group.

[0452] For example, when xe11 in Formula 601 is 2 or greater, two or more Ar 601 Can be connected to each other via a single bond.

[0453] In other embodiments, Ar in Formula 601 601 may be unsubstituted or substituted with at least one R 10a Substituted anthracenyl.

[0454] In other embodiments, the electron transport region may include a compound represented by Formula 601-1:

[0455] Formula 601-1

[0456]

[0457] Among them, in formula 601-1,

[0458] X 614 Can be N or C(R 614 ), X 615 Can be N or C(R 615 ), X 616 Can be N or C(R 616 ), and X 614 To X 616 At least one of may be N,

[0459] L 611 To L 613 As in this article, L 601 Described,

[0460] xe611 to xe613 may each be as described herein for xe1,

[0461] R 611 To R 613 As in this article, R 601 described, and

[0462] R 614 To R 616 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 20 Alkyl, C 1 -C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group.

[0463] For example, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 can each independently be 0, 1, or 2.

[0464] The electron transport region may include (for example, selected from) at least one of Compounds ET1 to ET45, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq 3 , BAlq, TAZ, NTAZ and / or (e.g., any suitable) combination thereof:

[0465]

[0466]

[0467]

[0468] The thickness of the electron transport region may be about to about For example, about to about When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, and / or (e.g., any appropriate) combination thereof, the thickness of the buffer layer, the hole blocking layer, or the electron control layer may be each independently about 100 Å. to about For example, about to about And the thickness of the electron transport layer can be about to about For example, about to about When the thickness of the buffer layer, the hole blocking layer, the electron control layer, the electron transport layer and / or the electron transport region is within these ranges, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage.

[0469] In addition to the materials described herein, the electron transport region (eg, an electron transport layer in the electron transport region) can further include a metal-containing material.

[0470] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex, and / or (e.g., any appropriate) combination thereof. The metal ion of the alkali metal complex may be a Li ion, a Na ion, a K ion, a Rb ion, or a Cs ion, and the metal ion of the alkaline earth metal complex may be a Be ion, a Mg ion, a Ca ion, a Sr ion, or a Ba ion. The ligand coordinated to the metal ion of the alkali metal complex or the alkaline earth metal complex may include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, and / or (e.g., any appropriate) combination thereof.

[0471] For example, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) or compound ET-D2:

[0472]

[0473] The electron transport region may include an electron injection layer that facilitates injection of electrons from the second electrode 150. The electron injection layer may directly contact the second electrode 150.

[0474] The electron injection layer may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a plurality of different materials, or iii) a multilayer structure including a plurality of layers including different materials.

[0475] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, and / or (eg, any appropriate) combinations thereof.

[0476] Alkali metals may include Li, Na, K, Rb, Cs and / or (e.g., any suitable) combinations thereof. Alkaline earth metals may include Mg, Ca, Sr, Ba and / or (e.g., any suitable) combinations thereof. Rare earth metals may include Sc, Y, Ce, Tb, Yb, Gd and / or (e.g., any suitable) combinations thereof.

[0477] The alkali metal-containing compound, alkaline earth metal-containing compound and rare earth metal-containing compound may be oxides, halides (eg, fluorides, chlorides, bromides or iodides) or tellurides of alkali metals, alkaline earth metals and rare earth metals, and / or (eg, any suitable) combinations thereof.

[0478] The alkali metal compound may include: alkali metal oxides, such as Li 2 O, Cs 2 O or K 2 O; alkali metal halides, such as LiF, NaF, CsF, KF, LiI, NaI, CsI or KI; and / or a combination thereof (e.g., any suitable combination). The alkaline earth metal compound may include alkaline earth metal oxides, such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying the condition 0 < x < 1) and / or Ba x Ca 1-x O (where x is a real number satisfying the condition 0 < x < 1), etc. The rare earth metal compound may include YbF 3 、ScF 3 、Sc 2 O 3 、Y 2 O 3 、Ce 2 O 3 、GdF 3 、TbF 3 、YbI 3 、ScI 3 、TbI 3 and / or a combination thereof (e.g., any suitable combination). In one or more embodiments, the rare earth metal compound may 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, La 2 Te 3 、Ce 2 Te 3 、Pr 2 Te 3 、Nd 2 Te 3 、Pm 2 Te 3 、Sm 2 Te 3 、Eu 2 Te 3 、Gd 2 Te 3 、Tb 2 Te 3 、Dy 2 Te 3 、Ho 2 Te 3 、Er 2 Te 3 、Tm 2Te 3 , Yb 2 Te 3 He Lu 2 Te 3 .

[0479] The alkali metal complex, the alkaline earth metal complex and the rare earth metal complex may include i) at least one selected from the group consisting of ions of alkali metals, ions of alkaline earth metals and ions of rare earth metals and ii) as a ligand bonded to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene and / or (for example, any appropriate) combinations thereof.

[0480] The electron injection layer may include (e.g., consist of) an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, and / or (e.g., any appropriate) combination thereof as described herein. In one or more embodiments, the electron injection layer may further include an organic material (e.g., a compound represented by Formula 601).

[0481] In one or more embodiments, the electron injection layer may include (e.g., consist of) the following: i) an alkali metal compound (e.g., an alkali metal halide); or ii) a) an alkali metal compound (e.g., an alkali metal halide), and b) an alkali metal, an alkaline earth metal, a rare earth metal and / or a combination thereof (e.g., any appropriate combination). For example, the electron injection layer may be a KI:Yb co-deposition layer, a RbI:Yb co-deposition layer, and / or a LiF:Yb co-deposition layer, etc.

[0482] When the electron injection layer further includes an organic material, 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 and / or their (e.g., any appropriate) combinations thereof may be uniformly (substantially uniformly) or non-uniformly (substantially non-uniformly) dispersed in a matrix including the organic material.

[0483] The thickness of the electron injection layer can be about to about And, for example, about to about When the thickness of the electron injection layer is within the range described herein, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0484] The second electrode 150

[0485] The second electrode 150 may be located on the interlayer 130 having the structure as described herein. The second electrode 150 may be a cathode as an electron injection electrode, and as a material for the second electrode 150, metals, alloys, conductive compounds, and / or (e.g., any appropriate) combinations thereof each having a low work function may be used.

[0486] The second electrode 150 may include lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO and / or (e.g., any appropriate) combination thereof. The second electrode 150 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0487] The second electrode 150 may have a single-layer structure or a multi-layer structure including a plurality of layers.

[0488] Capping layer

[0489] The first capping layer may be located outside the first electrode 110, and / or the second capping layer may be located outside the second electrode 150. For example, the light emitting device 10 may have a structure in which the first capping layer, the first electrode 110, the interlayer 130, and the second electrode 150 are sequentially stacked in a prescribed order, a structure in which the first electrode 110, the interlayer 130, the second electrode 150 and the second capping layer are sequentially stacked in a prescribed order, or a structure in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150 and the second capping layer are sequentially stacked in a prescribed order.

[0490] Light generated in the emission layer of the interlayer 130 of the light emitting device 10 may be extracted toward the outside through the first electrode 110, which may be a semi-transmissive electrode or a transmissive electrode, and the first capping layer. Light generated in the emission layer of the interlayer 130 of the light emitting device 10 may be extracted toward the outside through the second electrode 150, which may be a semi-transmissive electrode or a transmissive electrode, and the second capping layer.

[0491] The first capping layer and the second capping layer can increase the external emission efficiency according to the principle of constructive interference, and accordingly, increase the light extraction efficiency of the light emitting device 10, so that the light emitting efficiency of the light emitting device 10 can be improved.

[0492] Each of the first capping layer and the second capping layer may include a material having a refractive index of 1.6 or greater (at 589 nm).

[0493] The first capping layer and the second capping layer may each independently be an organic capping layer including an organic material, an inorganic capping layer including an inorganic material, or an organic-inorganic composite capping layer including an organic material and an inorganic material.

[0494] At least one of the first capping layer and the second capping layer may each independently include a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex and / or (for example, any appropriate) combination thereof. Optionally, the carbocyclic compound, the heterocyclic compound and the amine-containing compound may be substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I and / or (for example, any appropriate) combination thereof. In one or more embodiments, at least one of the first capping layer and the second capping layer may each independently include an amine-containing compound.

[0495] For example, at least one of the first capping layer and the second capping layer may each independently include the compound represented by Formula 201, the compound represented by Formula 202, and / or a (eg, any appropriate) combination thereof.

[0496] In one or more embodiments, at least one of the first capping layer and the second capping layer may each independently include at least one selected from compounds HT28 to HT33, at least one selected from compounds CP1 to CP6, β-NPB, and / or (for example, any appropriate) combination thereof:

[0497]

[0498] membrane

[0499] The first host, the second host, the first dopant and the second dopant may be included in one or more suitable films. Therefore, according to another aspect, a film including the first host, the second host, the first dopant and the second dopant may be provided. The film may be, for example, an optical member (or light control component) (e.g., a color filter, a color conversion member, a capping layer, a light extraction efficiency enhancement layer, a selective light absorption layer, a polarization layer and / or a quantum dot layer, etc.), a light blocking member (e.g., a light reflecting layer and / or a light absorbing layer, etc.), a protective member (e.g., an insulating layer and / or a dielectric layer, etc.).

[0500] Electronic devices

[0501] The light emitting device may be included in one or more suitable electronic devices. For example, the electronic device including the light emitting device may be a light emitting device and / or an authentication device, etc.

[0502] In addition to the light emitting device, the electronic device (e.g., light emitting device) may further include i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and / or the color conversion layer may be located in at least one direction in which the light emitted from the light emitting device travels. For example, the light emitted from the light emitting device may be blue light or white light. For details of the light emitting device, reference may be made to the relevant description provided herein. In one or more embodiments, the color conversion layer may include quantum dots. The quantum dots may be, for example, quantum dots as described herein.

[0503] The electronic device may include a first substrate, the first substrate may include a plurality of sub-pixel regions, the color filter may include a plurality of color filter regions respectively corresponding to the plurality of sub-pixel regions, and the color conversion layer may include a plurality of color conversion regions respectively corresponding to the plurality of sub-pixel regions.

[0504] The pixel defining layer may be located between the plurality of sub-pixel regions to define each of the plurality of sub-pixel regions.

[0505] The color filter may further include a plurality of color filter regions and a light shielding pattern between the plurality of color filter regions, and the color conversion layer may further include a plurality of color conversion regions and a light shielding pattern between the plurality of color conversion regions.

[0506] The plurality of color filter regions (or the plurality of color conversion regions) may include a first region emitting a first color light, a second region emitting a second color light, and / or a third region emitting a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths from each other. For example, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. For example, the plurality of color filter regions (or the plurality of color conversion regions) may include quantum dots. For example, the first region may include red quantum dots, the second region may include green quantum dots, and the third region may not include (e.g., may exclude) quantum dots. For details of the quantum dots, reference may be made to the relevant description provided herein. The first region, the second region, and / or the third region may each include a scatterer.

[0507] For example, the light emitting device may emit a first light, the first region may absorb the first light to emit a first-first color light, the second region may absorb the first light to emit a second-first color light, and the third region may absorb the first light to emit a third-first color light. In this regard, the first-first color light, the second-first color light, and the third-first color light may have different maximum emission wavelengths. For example, the first light may be blue light, the first-first color light may be red light, the second-first color light may be green light, and the third-first color light may be blue light.

[0508] In addition to the light emitting device as described herein, the electronic device may further include a thin film transistor. The thin film transistor may include a source electrode, a drain electrode and an active layer, wherein any one of the source electrode and the drain electrode may be electrically connected to any one of the first electrode and the second electrode of the light emitting device.

[0509] The thin film transistor may further include a gate electrode and / or a gate insulating film, etc.

[0510] The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, and / or an oxide semiconductor, etc.

[0511] 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 the color conversion layer and the light emitting device. The sealing portion allows light to be extracted from the light emitting device to the outside, and simultaneously (e.g., simultaneously) prevents ambient air and moisture from penetrating into the light emitting device. The sealing portion may be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion may be a thin film encapsulation layer including at least one of an organic layer and an inorganic layer. When the sealing portion is a thin film encapsulation layer, the electronic device may be flexible.

[0512] In addition to the color filter and / or color conversion layer, various functional layers may be additionally located on the sealing portion depending on the purpose of the electronic device. Examples of the functional layer may include a touch screen layer and / or a polarization layer, etc. The touch screen layer may be a pressure-sensitive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer. The authentication device may be, for example, a biometric authentication device that authenticates an individual by using biometric information of a living body (e.g., a fingertip and / or a pupil, etc.).

[0513] In addition to the light emitting device as described herein, the authentication device may further include a biometric information collector.

[0514] The electronic device can be applied to one or more appropriate displays, light sources, lighting equipment, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, electronic game consoles, medical tools (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measurement devices, pulse wave measurement devices, electrocardiogram displays, ultrasonic diagnostic equipment or endoscope displays), fish finders, one or more appropriate measuring tools, instruments (e.g., instruments for vehicles, aircraft and ships) and / or projectors, etc.

[0515] Electronic equipment

[0516] The light emitting device may be included in one or more suitable electronic devices.

[0517] For example, the electronic equipment including the light emitting device may be a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a retractable display, a laser printer, a telephone, a portable telephone, a tablet personal computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a video camera, a viewfinder, a microdisplay, a 3D display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays tiled together, a theater screen, a stadium screen, a light therapy device, a sign, and / or any combination thereof.

[0518] The light emitting device may have excellent or appropriate effects in terms of light emitting efficiency and long life, and thus electronic equipment including the light emitting device may have characteristics such as high brightness, high resolution, and relatively low power consumption.

[0519] Figures 5 to 7 Description

[0520] Figure 5 is a cross-sectional view showing an electronic device according to one or more embodiments.

[0521] Figure 5 The electronic device includes a substrate 100, a thin film transistor (TFT), a light emitting device, and a sealing portion 300 that seals the light emitting device.

[0522] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. The buffer layer 210 may be located on the substrate 100. The buffer layer 210 may prevent or reduce the penetration of impurities through the substrate 100, and may provide a flat surface on the substrate 100.

[0523] The TFT may be located on the buffer layer 210. The TFT may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0524] The active layer 220 may include an inorganic semiconductor such as silicon or polysilicon, an organic semiconductor, or an oxide semiconductor, and may include a source region, a drain region, and a channel region.

[0525] 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 .

[0526] An interlayer insulating film 250 may be located on the gate electrode 240. The interlayer insulating film 250 may be located between the gate electrode 240 and the source electrode 260 and between the gate electrode 240 and the drain electrode 270 to insulate each other.

[0527] The source electrode 260 and the drain electrode 270 may be located on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 may be formed to expose the source region and the drain region of the active layer 220, and the source electrode 260 and the drain electrode 270 may be located on the exposed portions of the source region and the drain region that contact the active layer 220.

[0528] The TFT is electrically connected to the light-emitting device to drive the light-emitting device and is covered and protected by the passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, and / or a combination thereof (e.g., any suitable combination). The light-emitting device is provided on the passivation layer 280. The light-emitting device may include a first electrode 110, an interlayer 130, and a second electrode 150.

[0529] The first electrode 110 may be located on the passivation layer 280. The passivation layer 280 may be placed to expose a part of the drain electrode 270, not completely cover the drain electrode 270, and the first electrode 110 may be placed to be connected to the exposed portion of the drain electrode 270.

[0530] The pixel defining layer 290 including an insulating material may be located on the first electrode 110. The pixel defining layer 290 may expose a specific region of the first electrode 110, and the interlayer 130 may be formed in the exposed region of the first electrode 110. The pixel defining layer 290 may be a polyimide-based organic film or a polyacrylic acid-based organic film. Although not shown in Figure 5 Some of the layers of the interlayer 130 may extend beyond the upper portion of the pixel defining layer 290 to be placed in the form of a common layer.

[0531] The second electrode 150 may be located on the interlayer 130, and a capping layer 170 may be additionally formed on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

[0532] The sealing portion 300 may be located on the capping layer 170. The sealing portion 300 may be located on the light-emitting device to protect the light-emitting device from moisture or oxygen. The sealing portion 300 may include: an inorganic film including silicon nitride (SiN x , 0 < x ≤ 1.4), silicon oxide (SiO x , 0 < x ≤ 2), indium tin oxide, indium zinc oxide, and / or a combination thereof (e.g., any suitable combination); an organic film including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyformaldehyde, polyarylate, hexamethyldisiloxane, acrylic resin (e.g., polymethyl methacrylate and / or polyacrylic acid, etc.), epoxy resin (e.g., aliphatic glycidyl ether (AGE), etc.), and / or a combination thereof (e.g., any suitable combination); or a combination of an inorganic film and an organic film.

[0533] Figure 6is a cross-sectional view of an electronic device according to another embodiment.

[0534] Figure 6 Electronic equipment and Figure 5 The electronic device is substantially the same as the one of the embodiment of the present invention, except that the light shielding pattern 500 and the functional area 400 are additionally arranged on the sealing portion 300. The functional area 400 may be i) a color filter area, ii) a color conversion area, or iii) a combination of a color filter area and a color conversion area. In one or more embodiments, Figure 6 The light-emitting device included in the electronic device may be a series light-emitting device.

[0535] Figure 7 A cross-sectional view of an electronic device according to one or more embodiments is shown.

[0536] Figure 7 The electronic device includes a substrate, a pixel circuit 121 including elements such as a thin film transistor (TFT) and a capacitor, a light emitting device 10, and a thin film encapsulation layer that seals the light emitting device. The thin film encapsulation layer may be a single layer including an organic film or an inorganic film (e.g., composed of an organic film or an inorganic film), or may be a multilayer in which organic films and inorganic films are alternately stacked. The inorganic film may include silicon oxide, silicon nitride, and / or silicon oxynitride, and the organic film may include polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyaromatic ester, hexamethyldisiloxane, acrylic resin (e.g., polymethyl methacrylate or polyacrylic acid) and / or a combination thereof (e.g., any appropriate one).

[0537] A thin film transistor (TFT) may include an active layer, a gate electrode, a source electrode, and a drain electrode, and the first electrode 110 of the light emitting device 10 may be electrically connected to at least one of the source electrode and the drain electrode of the thin film transistor.

[0538] For each sub-pixel, the light emitting device 10 may include a first electrode 110 , a second electrode 150 , and an interlayer 130 .

[0539] The interlayer 130 includes two or more light emitting cells sequentially stacked between the first electrode 110 and the second electrode 150 and a charge generating unit disposed between adjacent ones of the two or more light emitting cells.

[0540] In one or more embodiments, Figure 7 A case in which the second electrode 150 is formed as a common layer is shown, but a hole injection layer, a hole transport layer, an electron transport layer, and / or a charge generation layer may also be formed as a common layer.

[0541] Figure 8 Explanation

[0542] Figure 8 A perspective view schematically illustrates an electronic device 1 including a light-emitting device according to one or more embodiments. As a device for displaying moving images or still images, the electronic device 1 may be a portable electronic device, such as a mobile phone, a smart phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook computer, an e-book, a portable multimedia player (PMP), a navigation or ultra mobile PC (UMPC), and one or more suitable products, such as a television, a laptop computer, a monitor, a billboard, or an Internet of Things (IOT) device. The electronic device 1 may be such a product described herein or a part thereof. In one or more embodiments, the electronic device 1 may be a wearable device, such as a smart watch, a watch phone, a display of the type or kind of glasses, or a head-mounted display (HMD), or a part of a wearable device. However, the embodiments of the present disclosure are not limited thereto. For example, the electronic device 1 may include a dashboard of a vehicle, a center console of a vehicle, a central information display arranged on the dashboard of a vehicle, an interior rearview mirror display replacing a side mirror of a vehicle, an entertainment display for a rear seat of a vehicle or a display arranged on a backrest of a front seat, a head-up display (HUD) mounted on the front of the vehicle or projected on the front windshield, or a computer-generated hologram augmented reality head-up display (CGH AR HUD). For convenience of explanation, Figure 8 Explained is the case where the electronic equipment 1 is a smart phone.

[0543] The electronic device 1 may include a display area DA and a non-display area NDA outside the display area DA. The display device may realize an image through a plurality of pixel arrays two-dimensionally arranged in the display area DA.

[0544] The non-display area NDA is an area where no image is displayed, and may surround (e.g., completely surround) the display area DA. In the non-display area NDA, a driver for providing an electrical signal or power to a display element arranged in the display area DA may be arranged. In the non-display area NDA, a pad may be arranged, which may be electrically connected to an electronic element or a printed circuit board.

[0545] In the electronic device 1, the length in the x-axis direction and the length in the y-axis direction may be different from each other. Figure 8 As shown in FIG. 1 , the length in the x-axis direction may be shorter than the length in the y-axis direction. In one or more embodiments, the length in the x-axis direction may be the same as the length in the y-axis direction. In one or more embodiments, the length in the x-axis direction may be longer than the length in the y-axis direction.

[0546] Fig. 9 and FIG. 10A to FIG. 10C Description

[0547] Fig. 9 FIG. 1 is a diagram schematically showing the exterior of a vehicle 1000 as an electronic device including a light emitting device according to one or more embodiments. FIG. 10A to FIG. 10C FIG. 1 is a diagram schematically illustrating the interior of a vehicle 1000 according to one or more suitable embodiments.

[0548] refer to Fig. 9 , Fig. 10A , Fig. 10B and Fig. 10C The vehicle 1000 may refer to one or more suitable devices for moving an object to be transported (such as a person, object, or animal) from a departure area to a destination. The vehicle 1000 may include a vehicle traveling on a road or track, a ship moving on an ocean or river, and / or an airplane flying in the air using the action of air.

[0549] The vehicle 1000 may travel on a road or a track. The vehicle 1000 may move in a set or predetermined direction according to the rotation of at least one wheel. For example, the vehicle 1000 may include a three-wheeled or four-wheeled vehicle, an engineering machine, a two-wheeled vehicle, a prime mover device, a bicycle, and a train traveling on a track.

[0550] The vehicle 1000 may include a body having an interior and an exterior, and a chassis in which mechanical equipment required for driving is installed as other parts outside the body. The exterior of the body may include a front panel, a hood, a roof panel, a rear panel, a trunk, and / or pillars provided at the boundaries between doors, etc. The chassis of the vehicle 1000 may include a power generation device, a power transmission device, a drive device, a steering device, a brake device, a suspension device, a transmission device, a fuel device, front and rear wheels, and / or left and right wheels, etc.

[0551] The vehicle 1000 may include side window glasses 1100 , a front window glass 1200 , side view mirrors 1300 , an instrument cluster 1400 , a center console 1500 , a passenger seat instrument panel 1600 , and a display device 2 .

[0552] The side window glass 1100 and the front window glass 1200 may be divided by pillars disposed between the side window glass 1100 and the front window glass 1200 .

[0553] The side window glass 1100 may be mounted on the side of the vehicle 1000. In one or more embodiments, the side window glass 1100 may be mounted on a door of the vehicle 1000. A plurality of side window glasses 1100 may be provided and may face each other. In one or more embodiments, the side window glass 1100 may include a first side window glass 1110 and a second side window glass 1120. In one or more embodiments, the first side window glass 1110 may be arranged adjacent to the instrument cluster 1400. The second side window glass 1120 may be arranged adjacent to the passenger seat instrument panel 1600.

[0554] In one or more embodiments, the side window glass 1100 may be separated and / or spaced apart from each other in the x-axis direction or the -x-axis direction (the direction opposite to the x-axis direction). For example, the first side window glass 1110 and the second side window glass 1120 may be separated and / or spaced apart from each other in the x-axis direction or the -x-axis direction. In other words, the imaginary straight line L connecting the side window glass 1100 may extend in the x-axis direction or the -x-axis direction. For example, the imaginary straight line L connecting the first side window glass 1110 and the second side window glass 1120 to each other may extend in the x-axis direction or the -x-axis direction.

[0555] The front window glass 1200 may be installed at the front of the vehicle 1000. The front window glass 1200 may be disposed between the side window glasses 1100 facing each other.

[0556] The side view mirror 1300 may provide a rear view of the vehicle 1000. The side view mirror 1300 may be mounted on the exterior of the vehicle body. In one or more embodiments, a plurality of side view mirrors 1300 may be provided. Any one of the plurality of side view mirrors 1300 may be arranged outside the first side window glass 1110. Another one of the plurality of side view mirrors 1300 may be arranged outside the second side window glass 1120.

[0557] Instrument cluster 1400 may be arranged in front of the steering wheel. Instrument cluster 1400 may include a tachometer, a speedometer, a coolant temperature gauge, a fuel gauge, a turn indicator, a high beam indicator, a warning light, a seat belt warning light, an odometer, a speedometer, an automatic shift lever indicator light, a door open warning light, an oil warning light, and / or a low fuel warning light.

[0558] The center console 1500 may include a control panel on which a plurality of buttons for adjusting an audio device, an air conditioning device, and a seat heater are arranged. The center console 1500 may be arranged on one side of the instrument cluster 1400 .

[0559] The passenger seat instrument panel 1600 may be separated and / or spaced apart from the instrument cluster 1400, and the center console 1500 is disposed between the passenger seat instrument panel 1600 and the instrument cluster 1400. In one or more embodiments, the instrument cluster 1400 may be disposed corresponding to the driver's seat, and the passenger seat instrument panel 1600 may be disposed corresponding to the passenger seat. In one or more embodiments, the instrument cluster 1400 may be adjacent to the first side window glass 1110, and the passenger seat instrument panel 1600 may be adjacent to the second side window glass 1120.

[0560] In one or more embodiments, the display device 2 may include a display panel 3, and the display panel 3 may display an image. The display device 2 may be arranged inside the vehicle 1000. In one or more embodiments, the display device 2 may be arranged between side window glasses 1100 facing each other. The display device 2 may be arranged on at least one of the instrument cluster 1400, the center console 1500, and the passenger seat instrument panel 1600.

[0561] The display device 2 may include an organic light-emitting display device, an inorganic electroluminescent (EL) display device, and / or a quantum dot display device, etc. Hereinafter, as a display device 2 according to one or more embodiments, an organic light-emitting display device including a light-emitting device according to the present disclosure will be described as an example, but one or more other appropriate types (kinds) of display devices as described herein may also be used in the embodiments.

[0562] See also Fig. 10A , the display device 2 may be placed on the center console 1500. In one or more embodiments, the display device 2 may display navigation information. In one or more embodiments, the display device 2 may display audio, video, or information about vehicle settings.

[0563] See also Fig. 10B , the display device 2 may be arranged on the instrument cluster 1400. When the display device 2 is arranged on the instrument cluster 1400, the instrument cluster 1400 may display driving information and the like through the display device 2. For example, the instrument cluster 1400 may be implemented digitally. The instrument cluster 1400 may digitally display vehicle information and driving information as images. For example, the needle and instrument of the tachometer and one or more appropriate warning light icons may be displayed through digital signals.

[0564] See also Fig. 10C , the display device 2 may be placed on the passenger seat instrument panel 1600. The display device 2 may be embedded in the passenger seat instrument panel 1600 or arranged on the passenger seat instrument panel 1600. In one or more embodiments, the display device 2 arranged on the passenger seat instrument panel 1600 may display an image related to the information displayed on the instrument cluster 1400 and / or the information displayed on the center console 1500. In one or more embodiments, the display device 2 arranged on the passenger seat instrument panel 1600 may display information different from the information displayed on the instrument cluster 1400 and / or the information displayed on the center console 1500.

[0565] Manufacturing method

[0566] The various layers included in the hole transport region, the emission layer, and the various layers included in the electron transport region can be formed in a specific region by using one or more appropriate methods (for example, selected from) vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, and laser induced thermal imaging.

[0567] When the various layers included in the hole transport region, the emission layer, and the various layers included in the electron transport region are formed by vacuum deposition, the deposition temperature may be about 100° C. to about 500° C., about 10 -8 To about 10 -3 Torr vacuum and approx. / second to about The deposition was carried out at a deposition rate of 1000 nm / s.

[0568] Definition of terms

[0569] As used herein, the term "C 3 -C 60 A "carbocyclyl" refers to a cyclic group that includes only carbon (e.g., consists of carbon) as a ring-forming atom and has 3 to 60 carbon atoms, e.g., C 3 -C 50 Carbocyclic group, C 3 -C 40 Carbocyclic group, C 3 -C 30 Carbocyclic group, C 3 -C 20 Carbocyclic or C 3 -C 10 Carbocyclic groups, and as used herein, the term "C 1 -C 60 The "heterocyclic group" refers to a cyclic group having 1 to 60 carbon atoms and further having a hetero atom as a ring-forming atom in addition to carbon, for example, C 1 -C 50 Heterocyclic group, C 1 -C 40 Heterocyclic group, C 1 -C 30 Heterocyclic group, C 1 -C 20 Heterocyclic or C 1 -C 10 Heterocyclic group. 3 -C 60 Carbocyclic and C 1 -C 60 The heterocyclic groups may each be a monocyclic group including one ring (eg, consisting of one ring) or a polycyclic group in which two or more rings are fused to each other. 1 -C 60The heterocyclic group has 3 to 61 ring-forming atoms.

[0570] As used herein, the term "cyclic group" may include C 3 -C 60 Carbocyclic and C 1 -C 60 Heterocyclic group.

[0571] As used herein, the term "π-electron-rich C 3 -C 60 The term "cyclic group" refers to a cyclic group having 3 to 60 carbon atoms and not including *-N=*' as a ring-forming part, and the term "π-electron-deficient nitrogen-containing C 1 -C 60 The "cyclic group" refers to a heterocyclic group having 1 to 60 carbon atoms and including *-N=*' as a ring-forming part.

[0572] For example,

[0573] C 3 -C 60 The carbocyclic group may be i) a group T1 or ii) a fused ring group in which two or more groups T1 are fused to each other (e.g., a cyclopentadienyl group, an adamantyl group, a norbornyl group, a phenyl group, a pentalenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylene group, a pyrenyl group, a 1,2-triphenylene group, a peryl group, a pentalenyl group, a heptalenyl group, a tetracenyl group, a phenanthrenyl group, a hexacenyl group, a pentacene group, a rubinyl group, a coronet group, an ovalenyl group, an indenyl group, a fluorenyl group, a spirobifluorenyl group, a benzofluorenyl group, an indenophenanthryl group, or an indenoanthryl group),

[0574] C 1 -C 60The heterocyclic group may be i) a group T2, ii) a condensed ring group in which two or more groups T2 are condensed to each other, or iii) a condensed ring group in which at least one group T2 and at least one group T1 are condensed to each other (e.g., pyrrolyl, thienyl, furyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzothiorolyl, benzothiophenyl, benzofuranyl, carbazolyl, dibenzothiorolyl, dibenzothiophenyl, dibenzofuranyl, indenocarbazolyl, indolecarbazolyl, benzofuranocarbazolyl, benzothiophenylcarbazolyl, benzothiorolocarbazolyl, benzoindolcarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothienyl, benzonaphthothiorolyl, benzofuranodibenzofuran ... pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzo quinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazoline, benzoquinazolinyl, phenanthroline, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazine, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiazolyl, azadibenzothiopheneyl and / or azadibenzofuranyl),

[0575] Pi-electron-rich C 3 -C 60 The cyclic group may be i) a group T1, ii) a fused ring group in which two or more groups T1 are fused to each other, iii) a group T3, iv) a fused ring group in which two or more groups T3 are fused to each other, or v) a fused ring group in which at least one group T3 and at least one group T1 are fused to each other (e.g., C 3 -C 60 carbocyclic group, 1H-pyrrolyl, thiolyl, borocyclopentyl, 2H-pyrrolyl, 3H-pyrrolyl, thienyl, furyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzothiolyl, benzothiophenyl, benzofuranyl, carbazolyl, dibenzothiolyl, dibenzothiophenyl, dibenzofuranyl, indenocarbazolyl, indolecarbazolyl, benzofuranocarbazolyl, benzothiophenylcarbazolyl, benzothiophenylcarbazolyl, benzothiophenylcarbazolyl, benzothiophenylcarbazolyl, benzoindolcarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothienyl, benzonaphthothiolyl, benzofuranodibenzofuranyl, benzofuranodibenzothiophenyl and / or benzothiophenylodibenzothiophenyl, etc.),

[0576] π-electron-deficient nitrogen-containing C 1-C 60 The cyclic group may be i) a group T4, ii) a fused ring group in which two or more groups T4 are fused to each other, iii) a fused ring group in which at least one group T4 and at least one group T1 are fused to each other, iv) a fused ring group in which at least one group T4 and at least one group T3 are fused to each other, or v) a fused ring group in which at least one group T4, at least one group T1 and at least one group T3 are fused to each other (e.g., pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl , benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, benzisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiazolyl, azadibenzothiopheneyl and / or azadibenzofuranyl, etc.),

[0577] The radical T1 can be cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclobutenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cyclohexadienyl, cycloheptenyl, adamantyl, norbornane (or bicyclo[2.2.1]heptane) group, norbornyl, bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[2.2.2]octane or phenyl,

[0578] The radical T2 can be furanyl, thienyl, 1H-pyrrolyl, thiolyl, borocyclopentyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathiolyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, tetraazinyl, pyrrolidinyl, imidazolidinyl, dihydropyrrolyl, piperidinyl, tetrahydropyridinyl, dihydropyridinyl, hexahydropyrimidinyl, tetrahydropyrimidinyl, dihydropyrimidinyl, piperazinyl, tetrahydropyrazinyl, dihydropyrazinyl, tetrahydropyridazinyl or dihydropyridazinyl,

[0579] The group T3 may be furyl, thienyl, 1H-pyrrolyl, thiolyl or borocyclopentadienyl, and

[0580] The group T4 can be 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathioyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl or tetrazinyl.

[0581] As used herein, the terms "cyclic group", "C 3 -C 60 Carbocyclic group, "C 1 -C 60 Heterocyclic group", "π-electron-rich C 3 -C 60 Cyclic group" or "π-electron-deficient nitrogen-containing C 1 -C 60 The term "cyclic group" refers to a monovalent group or a polyvalent group (e.g., a divalent group, a trivalent group, a tetravalent group, etc.) fused to (e.g., combined together) a cyclic group. For example, "phenyl" may be benzo, phenyl and / or phenylene, etc., and those skilled in the art can easily understand these groups based on the structure of the formula including "phenyl".

[0582] Depending on the context, such as the structure of the formula associated with the term used, a divalent group may refer to or be a multivalent group (eg, trivalent, tetravalent, etc., not just divalent).

[0583] In some embodiments, the monovalent C 3 -C 60 Carbocyclic groups and monovalent C 1 -C 60 Examples of the heterocyclic group may include C 3 -C 10 Cycloalkyl, C 1 -C 10 Heterocycloalkyl, C 3 -C 10 Cycloalkenyl, C 1 -C 10 Heterocycloalkenyl, C 6 -C 60 Aryl, C 1 -C 60 heteroaryl, a monovalent non-aromatic fused polycyclic group, and a monovalent non-aromatic fused heteropolycyclic group, and a divalent C 3 -C 60 Carbocyclic groups and divalent C 1 -C 60 Examples of the heterocyclic group may include C 3 -C 10 Cycloalkylene, C 1 -C 10 Heterocycloalkylene, C 3 -C 10 Cycloalkenylene, C 1 -C 10 Heterocycloalkenylene, C 6 -C 60 Arylene, C 1 -C60 a heteroarylene group, a divalent non-aromatic fused polycyclic group, and a divalent non-aromatic fused heteropolycyclic group.

[0584] As used herein, the term "C 1 -C 60 "Alkyl" refers to a straight or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, for example, 1 -C 50 Alkyl, C 1 -C 30 Alkyl, C 1 -C 20 Alkyl or C 1 -C 10 The term "C alkyl" as used herein refers to an alkyl group, and specific examples thereof are methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, n-hexyl, isohexyl, sec-hexyl, tert-hexyl, n-heptyl, isoheptyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodecyl, sec-decyl, and tert-decyl. As used herein, the term "C alkyl" as used herein refers to an alkyl group, and specific examples thereof are methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, n-hexyl, isohexyl, sec-hexyl, tert-hexyl, n-heptyl, isoheptyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodecyl, sec-decyl, and tert-decyl. 1 -C 60 "Alkylene" refers to C 1 -C 60 The alkyl group has substantially the same structure as a divalent group.

[0585] As used herein, the term "C 2 -C 60 "Alkenyl" refers to 2 -C 60 A monovalent hydrocarbon group having at least one carbon-carbon double bond in the middle or at the end of the alkyl group, for example, 2 -C 30 Alkenyl, C 2 -C 20 Alkenyl or C 2 -C 10 As used herein, the term "C 2 -C 60 "Alkenylene" refers to C 2 -C 60 The alkenyl group has a divalent group having substantially the same structure.

[0586] As used herein, the term "C 2 -C 60 "Alkynyl" refers to a C 2 -C 60 The alkyl group has at least one carbon-carbon triple bond in the middle or at the end, for example, 2 -C 30Alkynyl, C 2 -C 20 Alkynyl or C 2 -C 10 The term "C ynyl" as used herein includes ethynyl and propynyl. 2 -C 60 "Alkynylidene" refers to C 2 -C 60 Alkynyl groups have substantially the same structure as a divalent group.

[0587] As used herein, the term "C 1 -C 60 "Alkoxy" refers to -OA 101 (A 101 C 1 -C 60 Alkyl) represented by a monovalent group, for example, C 1 -C 30 Alkoxy, C 1 -C 20 Alkoxy or C 1 -C 10 An alkoxy group, and examples thereof include a methoxy group, an ethoxy group, and an isopropoxy group.

[0588] As used herein, the term "C 3 -C 10 The term "cycloalkyl" as used herein refers to a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and examples thereof are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]octyl. As used herein, the term "Cycloalkyl" refers to a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and examples thereof are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2] 3 -C 10 "Cycloalkylene" refers to 3 -C 10 The cycloalkyl group has a divalent group having substantially the same structure.

[0589] As used herein, the term "C 1 -C 10 "Heterocycloalkyl" refers to a monovalent cyclic group of 1 to 10 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms, and specific examples are 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl and tetrahydrothienyl. As used herein, the term "C 1 -C 10 "Heterocycloalkylene" refers to a C 1 -C 10 The heterocycloalkyl group has substantially the same structure as a divalent group.

[0590] As used herein, the term C3 -C 10 The cycloalkenyl group refers to a monovalent cyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and having no aromaticity, and specific examples thereof are cyclopentenyl, cyclohexenyl and cycloheptenyl. The term “Cycloalkenyl” as used herein refers to a cyclopentenyl group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and having no aromaticity. 3 -C 10 "Cycloalkenylene" refers to 3 -C 10 The cycloalkenyl group has a divalent group having substantially the same structure.

[0591] As used herein, the term "C 1 -C 10 The term "heterocycloalkenyl group" refers to a monovalent cyclic group of 1 to 10 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms in its cyclic structure and has at least one double bond. 1 -C 10 Examples of heterocycloalkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothienyl. As used herein, the term “C 1 -C 10 "Heterocycloalkenylene" refers to a C 1 -C 10 The heterocycloalkenyl group has a divalent group having substantially the same structure.

[0592] As used herein, the term "C 6 -C 60 "Aryl" refers to a monovalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms, for example, 6 -C 50 Aryl, C 6 -C 40 Aryl, C 6 -C 30 Aryl, C 6 -C 20 Aryl or C 6 -C 15 Aryl, and as used herein the term "C 6 -C 60 "Arylene" refers to a divalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms. 6 -C 60 Examples of aryl groups are phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, phenanthrenyl, hexenyl, pentacene, rubenyl, coronenyl and ovalenyl. 6 -C 60 Aryl and C 6 -C60 When the arylene groups each include two or more rings, these rings may be fused to each other.

[0593] As used herein, the term "C 1 -C 60 The term "heteroaryl" refers to a monovalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms, for example, 1 -C 50 Heteroaryl, C 1 -C 40 Heteroaryl, C 1 -C 30 Heteroaryl, C 1 -C 20 Heteroaryl or C 1 -C 10 As used herein, the term "C 1 -C 60 The term "heteroarylene" refers to a divalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms which further includes at least one heteroatom as a ring-forming atom in addition to carbon atoms. 1 -C 60 Examples of heteroaryl groups are pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, benzoquinolyl, isoquinolyl, benzoisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthrolinyl, phthalazinyl and naphthyridinyl. 1 -C 60 Heteroaryl and C 1 -C 60 When the heteroarylene groups each include two or more rings, these rings may be fused to each other.

[0594] The term "monovalent non-aromatic fused polycyclic group" as used herein refers to a monovalent group (e.g., having 8 to 60 carbon atoms) having two or more rings fused to each other, having only carbon atoms as ring-forming atoms, and having no aromaticity in its entire molecular structure, for example, C 8 -C 60 Monovalent non-aromatic fused polycyclic group, C 8 -C 50 Monovalent non-aromatic fused polycyclic group, C 8 -C 40 Monovalent non-aromatic fused polycyclic group, C 8 -C 30 Monovalent non-aromatic fused polycyclic group or C 8 -C 20Monovalent non-aromatic fused polycyclic groups. Examples of monovalent non-aromatic fused polycyclic groups are indenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, indenophenanthryl, and indenoanthryl. As used herein, the term "divalent non-aromatic fused polycyclic group" refers to a divalent group having substantially the same structure as the monovalent non-aromatic fused polycyclic group described herein.

[0595] The term "monovalent non-aromatic fused heteropolycyclic group" as used herein refers to a monovalent group (for example, having 1 to 60 carbon atoms) having two or more rings fused to each other, further including at least one heteroatom as a ring-constituting atom in addition to carbon atoms, and having non-aromaticity in its entire molecular structure, for example, C 1 -C 60 Monovalent non-aromatic fused heteropolycyclic group, C 1 -C 50 Monovalent non-aromatic fused heteropolycyclic group, C 1 -C 40 Monovalent non-aromatic fused heteropolycyclic group, C 1 -C 30 A monovalent non-aromatic fused heteropolycyclic group or C 1 -C 20 Monovalent non-aromatic condensed heteropolycyclic group. Examples of the monovalent non-aromatic condensed heteropolycyclic group include pyrrolyl, thienyl, furanyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzothioyl, benzothiophenyl, benzofuranyl, carbazolyl, dibenzothioyl, dibenzothiophenyl, dibenzofuranyl, azacarbazolyl, azafluorenyl, azadibenzothioyl, azadibenzothiophenyl, azadibenzofuranyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl The term "divalent non-aromatic fused heteropolycyclic group" as used herein refers to a divalent group having substantially the same structure as the monovalent non-aromatic fused heteropolycyclic group described herein.

[0596] As used herein, the term "C 6 -C 60 Aryloxy" indicates -OA 102 (A 102 C6 -C 60 Aryl), for example, C 6 -C 50 Aryloxy, C 6 -C 40 Aryloxy, C 6 -C 30 Aryloxy, C 6 -C 20 Aryloxy or C 6 -C 15 Aryloxy, and as used herein the term "C 6 -C 60 Arylthio" indicates -SA 103 (A 103 C 6 -C 60 Aryl), for example, C 6 -C 50 Arylthio, C 6 -C 40 Arylthio, C 6 -C 30 Arylthio, C 6 -C 20 Arylthio or C 6 -C 15 Arylthio.

[0597] As used herein, the term "C 7 -C 60 "Aralkyl" refers to -A 104 A 105 (A 104 Can be C 1 -C 54 Alkylene, and A 105 Can be C 6 -C 59 Aryl), for example, C 7 -C 50 Aralkyl, C 7 -C 40 Aralkyl, C 7 -C 30 Aralkyl, C 7 -C 20 Arylalkyl or C 7 -C 15 Aralkyl, and as used herein the term "C 2 -C 60 "Heteroaralkyl" refers to -A 106 A 107 (A 106 Can be C 1 -C 59 Alkylene, and A 107 Can be C1 -C 59 Heteroaryl), for example, C 2 -C 50 Heteroarylalkyl, C 2 -C 40 Heteroarylalkyl, C 2 -C 30 Heteroarylalkyl, C 2 -C 20 Heteroaralkyl or C 2 -C 15 Heteroaralkyl.

[0598] As used herein, the term " 10a "refer to:

[0599] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro,

[0600] Each unsubstituted or substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (for example, any appropriate) combination thereof,

[0601] Each unsubstituted or substituted C 3 -C60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C 60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 6 -C 60 Aryloxy, C 6 -C 60 Arylthio, C 7 -C 60 Aralkyl, C 2 -C 60 Heteroaralkyl, -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 ) and / or (e.g., any appropriate) combination thereof; or

[0602] -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 ),

[0603] The Q used in this paper 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C 1 -C 60 Alkyl; C 2 -C 60 Alkenyl; C 2 -C 60 Alkynyl; C 1 -C 60 alkoxy; each unsubstituted or deuterated, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 C substituted with alkoxy, phenyl, biphenyl and / or any suitable combination thereof 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group; C 7 -C 60 Aralkyl; or C 2 -C 60 Heteroaralkyl.

[0604] As used herein, the term "heteroatom" refers to any atom other than a carbon atom and a hydrogen atom. Examples of heteroatoms are O, S, N, P, Si, B, Ge, Se, and any combination thereof.

[0605] The term “transition metal” as used herein includes hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt) and / or gold (Au), among others.

[0606] As used herein, "Ph" refers to phenyl, as used herein, "Me" refers to methyl, as used herein, "Et" refers to ethyl, as used herein, "tert-Bu" or "Bu" refers to ethyl. t " refers to a tert-butyl group, and "OMe" as used herein refers to a methoxy group.

[0607] As used herein, the term "biphenyl" refers to a "phenyl group substituted by a phenyl group". In other words, a "biphenyl group" is a group having C 6 -C 60A phenyl group substituted with an aryl group as a substituent.

[0608] As used herein, the term "terphenyl" refers to a "phenyl group substituted by a biphenyl group". In other words, a "terphenyl group" is a group having a C 6 -C 60 Aryl substituted C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0609] Unless otherwise defined, *, *' and *" as used herein each refer to a binding site to an adjacent atom in the corresponding formula or moiety.

[0610] In this specification, the x-axis, y-axis and z-axis are not limited to the three axes in the orthogonal coordinate system, and can be interpreted in a broad sense as including these axes. For example, the x-axis, y-axis and z-axis can refer to those axes that are orthogonal to each other, or can refer to those axes in different directions that are not orthogonal to each other. Terms such as "substantially", "about" and "approximately" are used as relative terms rather than as terms of degree, and are intended to explain the inherent deviations in the measured values ​​or calculated values ​​that a person of ordinary skill in the art would recognize. They can include a specified value and the range of acceptable deviations as determined by a person of ordinary skill in the art, taking into account the limitations and errors associated with the measurement of the quantity. For example, "about" can refer to one or more standard deviations, or ±30%, ±20%, ±10% or ±5% of a specified value.

[0611] The numerical ranges disclosed herein include and are intended to disclose all subranges of the same numerical precision. For example, the range of "1.0 to 10.0" includes all subranges having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Therefore, the applicant reserves the right to amend this specification (including the claims) to explicitly set forth any subranges included in the ranges explicitly set forth herein.

[0612] The light-emitting devices, electronic devices, electronic equipment and / or any other related devices or components according to the embodiments of the present disclosure described herein may be implemented using any appropriate hardware, firmware (e.g., a dedicated integrated circuit), software, or a combination of software, firmware and hardware. For example, the various components of the light-emitting device and / or electronic device may be formed on an integrated circuit (IC) chip or on a separate IC chip. Further, the various components of the light-emitting device and / or electronic device may be implemented on a flexible printed circuit film, a tape carrier package (TCP) or a printed circuit board (PCB), or formed on a substrate. Further, the various components and / or devices of the device may be processes or threads running on one or more processors in one or more computing devices, executing computer program instructions and interacting with other system components to perform the various functions described herein. The computer program instructions are stored in a memory, which may be implemented in a computing device using a standard storage device, such as, for example, a random access memory (RAM). The computer program instructions may also be stored in other non-transient computer-readable media, such as, for example, a CD-ROM or a flash drive. Furthermore, those skilled in the art will recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or the functionality of a dedicated computing device may be distributed across one or more other computing devices without departing from the scope of the embodiments of the present disclosure.

[0613] Hereinafter, compounds according to one or more embodiments and light-emitting devices according to one or more embodiments will be described in more detail with reference to the following synthesis examples and examples. The phrase "using B instead of A" used in describing the synthesis examples means using B instead of A in the same molar equivalent.

[0614] Example

[0615] Evaluation Example 1

[0616] The S of the compounds described herein was calculated by 1 Energy level (eV), T 1 Energy level (eV) and T 2 Energy level (eV): Utilize the density functional theory (DFT) calculation method using Beck 3-parameter hybrid function and Yang-Parr correlation function (B3LYP) at 6-311G (d, p) molecular level, calculate using Gaussian 09 program, so as to calculate the molecular structure in the ground state, and then, utilize the time-dependent DFT (TD-DFT) calculation method for excited state to evaluate. Its result is shown in Table 1.

[0617] Table 1

[0618] Compound No. <![CDATA[S 1 Energy level (eV)]]> <![CDATA[T 1 Energy level (eV)]]> <![CDATA[T 2 Energy level (eV)]]> 1-49(A1) 3.13 1.76 3.17 1-50(B1) 3.12 1.76 3.02 1-51(B2) 3.12 1.76 3.04 2-177 2.69 2.29 2.72

[0619] See Table 1, S of compounds (eg, compounds 1-49) 1 Energy level (eV) and T 2 The energy level difference between the energy levels (eV) is 0.04 eV. This result shows that triplet excitons can be more efficiently converted into singlet excitons, contributing to high luminous efficiency (eg, candela per ampere per year (cd / A / y)) of the light-emitting device.

[0620] Example 1

[0621] As the anode, an ITO glass substrate (with a resistance of 15 Ω / cm 2 )(1200 Angstroms A glass substrate with an ITO electrode (manufactured by Corning) was cut into a size of 50 millimeters (mm) × 50 mm × 0.5 mm. The glass substrates were each ultrasonically cleaned for 10 minutes using isopropyl alcohol and pure water, followed by ultraviolet (UV) irradiation for 10 minutes and ozone exposure cleaning, and installed in a vacuum deposition device.

[0622] First, m-MTDATA (which is a material suitable for use as or for a hole injection material) is vacuum deposited on a substrate to form (or provide) a substrate having A hole injection layer having a thickness of , and then NPB (which is a hole transport material) is vacuum deposited to form a The hole transport layer has a thickness of Compound 1-49 (dopant doping concentration 1wt%, compound 2-177) is vacuum deposited to form (or provide) a first emission layer, and The compound 1-50 (dopant doping concentration 1wt%, compound 2-177) is vacuum deposited to form (or provide) a second emission layer to have a thickness of Next, Alq 3 (which is a material suitable for the electron transport layer) is deposited on the second emission layer to form (or provide) and then vacuum depositing Al to form (or provide) an electron transport layer having a thickness of An Al electrode (cathode) with a thickness of is formed, thereby manufacturing a light-emitting device.

[0623]

[0624]

[0625] Examples 2 to 4 and Comparative Examples 1 to 3

[0626] A light emitting device was manufactured in substantially the same manner as in Example 1, except that if (eg, when) the first emission layer and the second emission layer were formed (or provided), the compounds listed in Table 2 were used and formed to the listed thicknesses.

[0627] Evaluation Example 2

[0628] The light emitting devices of Examples 1 to 4 and Comparative Examples 1 to 3 were measured using a Keithley MU 236 and a luminance meter PR650 at 1000 candelas per square meter (cd / m 2 ) under driving voltage (V), luminous efficiency (cd / A / y), life (LT97) (h) and normalized efficiency @50 grayscale. The results are shown in Table 2.

[0629] Luminous efficiency (cd / A / y) is a value evaluated in consideration of the current efficiency (cd / A) and color purity (CIEy) of the corresponding material. Luminous efficiency refers to an important efficiency reference value for small and large light-emitting devices that target high brightness and a high color range (e.g., color gamut).

[0630] The lifespan (LT97) (h) is a value obtained by measuring the time from the initial luminance to the point where the luminance reaches 97% of the initial luminance. Fig.11 A graph showing the normalized efficiency depending on the grayscale.

[0631] Additionally, normalized efficiency @50 grayscale was calculated in substantially the same manner as described herein.

[0632] Table 2

[0633]

[0634] It can be seen from Table 2 that, compared with Comparative Examples 1 to 3, the light emitting devices according to Examples 1 to 4 have more excellent driving voltage, light emitting efficiency and lifespan.

[0635] For example, the light-emitting device according to Examples 1 to 4 has an emission layer having a multilayer structure including a first emission layer and a second emission layer, wherein the first emission layer and the second emission layer have compounds having different luminous efficiency, lifespan, and low grayscale (50 grayscale) characteristics. Accordingly, a light-emitting device having more excellent luminous efficiency and lifespan characteristics than Comparative Examples 1 to 3 can be manufactured.

[0636] In one or more embodiments, the light-emitting device according to Embodiments 1 to 4 may (e.g., be able to) provide a light-emitting device that achieves (e.g., ensures) target lifetime and luminous efficiency by appropriately adjusting the thickness of each of the first emission layer and the second emission layer.

[0637] In the case of the light-emitting device of the present disclosure, by including a first host having excellent or appropriate hole mobility and a second host having excellent or appropriate electron mobility, the charge balance within the light-emitting device can be improved or optimized.

[0638] The light-emitting device includes a first emission layer and a second emission layer or includes a first blue emission layer and a second blue emission layer, and the multi-layer emission layers include a first host and a second host, respectively, so that the charge balance in the light-emitting device can be improved or optimized. In one or more embodiments, the charge in the emission layer can be effectively utilized by controlling the transport of holes and electrons (for example, by adjusting the thickness of each layer).

[0639] The light-emitting device includes a first host having excellent or appropriate hole mobility and luminous efficiency characteristics and a second host having excellent or appropriate electron mobility and lifetime characteristics in the first emission layer and the second emission layer, respectively, so that both luminous efficiency and lifetime characteristics can be achieved (e.g., simultaneously) (e.g., ensured).

[0640] For example, the first host provides or satisfies an S of 0.05 eV. 1 Energy Level and T 2 The difference between the energy levels, thereby smoothly converting triplet excitons to singlet excitons and ensuring excellent or appropriate luminous efficiency characteristics.

[0641] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for limiting purposes. The description of the features or aspects in each embodiment should generally be considered to be applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that one or more appropriate changes in form and details may be made therein without departing from the spirit and scope defined by the appended claims and their equivalents.

Claims

1. A light emitting device, comprising: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode and including an emitting layer, wherein: The emission layer includes a first emission layer and a second emission layer between the first emission layer and the second electrode, The first emission layer includes a first host and a first dopant, The second emission layer includes a second host and a second dopant, The first emission layer is on the second emission layer, the first subject has a normalized efficiency of 0.8 or less, The second subject has a normalized efficiency of 0.95 or greater, and Each of the first dopant and the second dopant is an asymmetric compound including at least one cyclic group including each of boron and nitrogen as a ring-forming atom.

2. The light emitting device according to claim 1, wherein Each of the first body and the second body satisfies at least one selected from the following conditions: Condition 2-1 The S1 energy level of the first host is 3.10 eV to 3.15 eV; Condition 2-2 The S1 energy level of the second host is 3.10 eV to 3.15 eV; Conditions 2-3 The T2 energy level of the first host is 3.15 eV to 3.20 eV; and Conditions 2-4 The T2 energy level of the second host is 3.00 eV to 3.05 eV.

3. The light emitting device according to claim 1, wherein The first dopant and the second dopant are each independently a compound represented by Formula 3-1 or a compound represented by Formula 3-2: Formula 3-1 Formula 3-2 In formula 3-1 and formula 3-2, X is B, Y1 and Y2 are each independently N(R3), O, S, Se, Si(R3)(R3') or C(R3)(R3'), and Z is C(R3)(R3'), N(R3"), O, S or Se, R3, R3', R3" and R 31 To R 33 Each is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic group, unsubstituted or substituted with at least one R 10a Substituted C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C6-C 60 arylthio, -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), is selected from R3, R3', R3" and R 31 To R 33 At least two of them are bonded to each other to form an unsubstituted or substituted R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic group, a31 is an integer selected from 0 to 4, a32 is an integer selected from 0 to 3, a33 is an integer selected from 0 to 4, R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 11 )(Q 12 )(Q 13 )、-N(Q 11 )(Q 12 )、-B(Q 11 )(Q 12 )、-C(=O)(Q 11 )、-S(=O)2(Q 11 )、-P(=O)(Q 11 )(Q 12 ) or any combination thereof; Each unsubstituted or substituted C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy, C6-C 60 Arylthio, C7-C 60 Aralkyl, C2-C 60 Heteroaralkyl, -Si(Q 21 )(Q 22 )(Q 23 )、-N(Q 21 )(Q 22 )、-B(Q 21 )(Q 22 )、-C(=O)(Q 21 )、-S(=O)2(Q 21 )、-P(=O)(Q 21 )(Q 22 ) or any combination thereof; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ),and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 alkoxy; or each unsubstituted or substituted with deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic or C1-C 60 Heterocyclic group; C7-C 60 Arylalkyl; or C2-C 60 Heteroaralkyl.

4. The light emitting device according to claim 1, wherein The first electrode is an anode, The second electrode is a cathode, The interlayer further includes a hole transport region between the first electrode and the first emission layer and an electron transport region between the second emission layer and the second electrode, The hole transport region includes a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer or any combination thereof, and The electron transport region includes a hole blocking layer, an electron transport layer, an electron injection layer, an electron control layer or any combination thereof.

5. The light emitting device according to claim 1, further comprising: a first capping layer outside the first electrode; a second capping layer outside the second electrode; or The first capping layer and the second capping layer.

6. The light emitting device according to claim 1, wherein The interlayer includes m light-emitting units and m-1 charge generation units between adjacent light-emitting units, m is an integer of 2 or greater, One of the m light emitting units includes the first emission layer and the second emission layer.

7. The light emitting device according to claim 6, wherein A maximum emission wavelength of light emitted from at least one of the m light emitting cells is different from a maximum emission wavelength of light emitted from at least one of the remaining light emitting cells of the m light emitting cells.

8. A light emitting device, comprising: a first electrode; a second electrode facing the first electrode; as well as an interlayer between the first electrode and the second electrode and including an emitting layer, wherein The emission layer includes a red emission layer, a green emission layer and a blue emission layer, The blue emission layer includes a first blue emission layer and a second blue emission layer between the first blue emission layer and the second electrode, The first blue emission layer includes a first host and a first dopant, The second blue emission layer includes a second host and a second dopant, The first blue emission layer is on the second blue emission layer, the first subject has a normalized efficiency of 0.8 or less, The second subject has a normalized efficiency of 0.95 or greater, and Each of the first dopant and the second dopant is an asymmetric compound including at least one cyclic group including each of boron and nitrogen as a ring-forming atom.

9. The light emitting device according to claim 1 or 8, wherein The first subject has a normalized efficiency of 0.8 or less at 50 grayscale, and The second subject has a normalized efficiency of 0.95 or greater at 50 grayscale.

10. The light emitting device according to claim 1 or 8, wherein Each of the first body and the second body satisfies at least one selected from the following conditions: Condition 1 The difference between the S1 energy level and the T2 energy level of the first host is 0.05 eV or less; and Condition 2 A difference between an S1 energy level and a T2 energy level of the second host is 0.1 eV or less.

11. The light emitting device according to claim 1 or 8, wherein The first host includes at least one deuterium, and The second host includes at least one deuterium.

12. The light emitting device according to claim 8, wherein The interlayer includes m light-emitting units and m-1 charge generation units between adjacent light-emitting units, m is an integer of 2 or greater, and At least one of the m light emitting units includes the red emission layer, the green emission layer, and the blue emission layer.

13. An electronic device comprising the light emitting device according to any one of claims 1 to 12.

14. The electronic device according to claim 13, further comprising: Color filters, color conversion layers, touch screen layers, polarizing layers, or any combination thereof.

15. The electronic device according to claim 13, further comprising: A thin film transistor comprising 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.

16. An electronic device comprising the light emitting device according to any one of claims 1 to 12.

17. The electronic device according to claim 16, wherein The electronic equipment is a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display, a rollable display, a foldable display, a retractable display, a laser printer, a phone, a portable phone, a tablet personal computer, a tablet phone, a personal digital assistant, a wearable device, a laptop computer, a digital camera, a video camera, a viewfinder, a microdisplay, a three-dimensional display, a virtual reality display, an augmented reality display, a vehicle, a video wall with multiple displays tiled together, a theater screen, a stadium screen, a light therapy device, a sign and / or any combination thereof.

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