Light emitting device and electronic equipment and electronic equipment including the same

Abstract

The embodiment provides a light-emitting device and an electronic device and an electronic device including the same, wherein 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. The interlayer includes: an emission layer, a first compound as a hole transport compound, a second compound as an electron transport compound, a third compound as an organic metal compound, and a fourth compound as a boron-containing compound. The difference (ΔE) between the lowest excited singlet energy level and the lowest excited triplet energy level of the fourth compound ST ) is less than or equal to about 0.4 eV; and the light-emitting device satisfies Condition 1 and / or Condition 2 explained in the specification: [Condition 1] K FRET >K r t ,[Condition 2]R 0 >R DA .

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0132513 filed in the Korean Intellectual Property Office on October 5, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments relate to a light emitting device and electronic equipment and electronic devices including the light emitting device. Background Art

[0004] The light-emitting device is a self-emissive device having wide viewing angle, high contrast, short response time, and excellent characteristics in terms of brightness, driving voltage, and response speed.

[0005] In the light-emitting device, a first electrode is arranged on a substrate, and a hole transport region, an emission layer, an electron transport region, and a second electrode may be arranged on the first electrode in sequence. 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, thereby generating light.

[0006] It should be understood that this background section is intended, in part, to provide a useful background for understanding the technology. However, this background section may also include ideas, concepts, or cognitions that were not part of the knowledge or understanding of a person skilled in the relevant art before the corresponding effective filing date of the subject matter disclosed herein. Summary of the invention

[0007] Embodiments include a light emitting device, and electronic equipment and electronic devices including the same.

[0008] 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 embodiments of the disclosure.

[0009] According to an embodiment, the light emitting device may include a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode, wherein

[0010] The interlayer may include an emission layer, a first compound as a hole transport compound, a second compound as an electron transport compound, a third compound as an organic metal compound, and a fourth compound as a boron-containing compound,

[0011] The difference (ΔE) between the lowest excited singlet energy level and the lowest excited triplet energy level of the fourth compound ST ) may be less than or equal to about 0.4 eV, and

[0012] The light emitting device may satisfy condition 1 and / or condition 2:

[0013] [Condition 1]

[0014] K FRET >K r t .

[0015] In condition 1,

[0016] K FRET may represent the Forster resonance energy transfer (FRET) rate constant between the third compound and the fourth compound, and K r t may represent a luminescence rate constant of the third compound;

[0017] [Condition 2]

[0018] R 0 >R DA .

[0019] In condition 2,

[0020] R 0 can represent the Förster radius between the third and fourth compounds, and R DA The distance between the molecules of the third compound and the molecules of the fourth compound may be represented.

[0021] In an embodiment, the emission layer may include a first compound, a second compound, a third compound, and a fourth compound.

[0022] In an embodiment, the first compound and the second compound may form an exciplex host.

[0023] In an embodiment, the light emitting device may further satisfy Condition 3 explained below.

[0024] In an embodiment, the first compound and the second compound may each include a carbazole moiety.

[0025] In an embodiment, a difference between a highest occupied molecular orbital (HOMO) energy level of the first compound and a HOMO energy level of the second compound may be greater than or equal to about 0.2 eV.

[0026] In an embodiment, a difference between a lowest unoccupied molecular orbital (LUMO) energy level of the first compound and a LUMO energy level of the second compound may be greater than or equal to about 0.2 eV.

[0027] In an embodiment, the light emitting device may satisfy Condition 1 and Condition 2.

[0028] In an embodiment, the difference (ΔE) between the lowest excited singlet energy level and the lowest excited triplet energy level of the fourth compound ST ) may be less than or equal to approximately 0.2 eV.

[0029] In an embodiment, the first compound may be represented by Formula 1 explained below.

[0030] In an embodiment, the second compound may be represented by Formula 2 explained below.

[0031] In an embodiment, the third compound may be represented by Formula 3 explained below.

[0032] In an embodiment, the fourth compound may be represented by Formula 4 explained below.

[0033] In an embodiment, R in Formula 4 45 It may be a group represented by Formula 4-1 explained below.

[0034] In an embodiment, Ar in Formula 4 41 To Ar 44 may be each independently unsubstituted or substituted with at least one R 10a Substituted phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, phenanthrenyl, hexenyl, pentacenyl, rubenyl, coronenyl or ovalenyl.

[0035] In an embodiment, the interlayer may include: two or more emission units; and at least one charge generation layer, each between adjacent ones of the two or more emission units.

[0036] According to an embodiment, an electronic device may include a light emitting device.

[0037] In an embodiment, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof.

[0038] According to an embodiment, the electronic equipment may include a light emitting device.

[0039] In embodiments, the electronic 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 mobile phone, 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 three-dimensional (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, or a sign.

[0040] It should be understood that the above embodiments have been described in a general and explanatory sense only and not for purposes of limitation, and the present disclosure is not limited to the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and other aspects and features of the present disclosure will become more apparent by describing in detail embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0042] Figure 1 is a schematic cross-sectional view of the structure of a light emitting device according to an embodiment;

[0043] Figure 2 is a schematic cross-sectional view of a structure of an electronic device according to an embodiment;

[0044] Figure 3 is a schematic cross-sectional view of a structure of an electronic device according to another embodiment;

[0045] Figure 4 shows a schematic perspective view of an electronic device according to an embodiment;

[0046] Figure 5 is a schematic perspective view of the exterior of a vehicle as an electronic device including a light emitting device according to an embodiment; and

[0047] FIG. 6A to FIG. 6C Each is a diagram of the interior of a vehicle according to an embodiment. DETAILED DESCRIPTION

[0048] The present disclosure will now be described more fully below with reference to the attached drawings in which embodiments are shown. However, the present disclosure may be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Instead, these embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art.

[0049] In the drawings, the size (eg, thickness), ratio, and dimensions of elements may be exaggerated for ease of description and for clarity. The same reference numerals and / or the same reference characters refer to the same elements throughout.

[0050] In the description, it will be understood that when an element (or region, layer, portion, etc.) is referred to as being "on", "connected to" or "coupled to" another element (or region, layer, portion, etc.), it may be directly on, connected to or coupled to the other element (or region, layer, portion, etc.), or one or more intervening elements (or regions, layers, portions, etc.) may be present between them. In a similar sense, when an element (or region, layer, portion, etc.) is described as "covering" another element (or region, layer, portion, etc.), it may directly cover the other element (or region, layer, portion, etc.), or one or more intervening elements (or regions, layers, portions, etc.) may be present between them.

[0051] In the description, when an element is "directly on," "directly connected to," or "directly coupled to" another element, there are no intervening elements. For example, "directly on" may mean that two layers or two elements are disposed without another element (such as an adhesive element) between them.

[0052] As used herein, expressions used in the singular such as “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0053] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. For example, "A and / or B" may be understood to mean "A, B, or A and B". The terms "and" and "or" may be used in a connecting sense or a separating sense and may be understood to be equivalent to "and / or".

[0054] In the specification and claims, the term "at least one of" is intended to include the meaning of "at least one selected from the group consisting of" for the purposes of its meaning and interpretation. For example, "at least one of A, B, and C" may be understood to mean only A, only B, only C, or any combination of two or more of A, B, and C, such as ABC, ACC, BC, or CC. When following a list of elements, the term "at least one of" modifies the entire list of elements and does not modify the individual elements of the list.

[0055] It will be understood that although the terms first, second, etc. can be used to describe various elements in this article, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element can be referred to as the second element. Similarly, without departing from the scope of the present disclosure, the second element can be referred to as the first element.

[0056] For ease of description, spatially relative terms such as "below," "under," "below," "above," or "over" may be used herein to describe the relationship between one element or component and another element or component 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, in the case where the device illustrated in the accompanying drawings is turned over, a device that is "below" or "below" another device may be placed "over" the other device. Accordingly, the illustrative term "below" may include both a below position and an above position. The device may also be oriented in other directions, and thus the spatially relative terms may be interpreted differently depending on the orientation.

[0057] As used herein, the terms "about" or "approximately" include the stated value and mean within an acceptable range of deviation from the stated value as determined by one of ordinary skill in the art taking into account the measurement in question and errors associated with the measurement of the stated quantity (i.e., limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±20%, ±10%, or ±5% of the stated value.

[0058] It should be understood that the terms “comprise,” “comprising,” “include,” “including,” “have,” “having,” “contains,” and “containing” and the like are intended to indicate the presence of specified features, integers, steps, operations, elements, components, or any combination thereof in the present disclosure, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or any combination thereof.

[0059] Unless otherwise defined or implied herein, all terms (including technical terms and scientific terms) used have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an ideal or overly formal sense unless clearly defined in the specification.

[0060] An embodiment provides a light emitting device, which may include a first electrode,

[0061] a second electrode facing the first electrode, and

[0062] The interlayer between the first electrode and the second electrode, wherein

[0063] The interlayer may include an emission layer, a first compound as a hole transport compound, a second compound as an electron transport compound, a third compound as an organic metal compound, and a fourth compound as a boron-containing compound,

[0064] The difference (ΔE) between the lowest excited singlet energy level and the lowest excited triplet energy level of the fourth compound ST ) may be less than or equal to about 0.4 eV, and

[0065] The light emitting device may satisfy condition 1 and / or condition 2:

[0066] [Condition 1]

[0067] K FRET >K r t .

[0068] In condition 1,

[0069] K FRET may represent the Forster resonance energy transfer (FRET) rate constant between the third compound and the fourth compound, and K r t may represent a luminescence rate constant of the third compound;

[0070] [Condition 2]

[0071] R 0 >R DA .

[0072] In condition 2,

[0073] R 0 can represent the Förster radius between the third and fourth compounds, and R DA The distance between the molecules of the third compound and the molecules of the fourth compound may be represented.

[0074] In an embodiment, in condition 2, R DA It may be the distance measured between the triplet distribution position of the third compound and the singlet distribution position of the fourth compound.

[0075] In an embodiment,

[0076] The first electrode may be an anode,

[0077] The second electrode may be a cathode,

[0078] The interlayer may further include a hole transport region between the first electrode and the emissive layer and an electron transport region between the emissive layer and the second electrode,

[0079] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof, and

[0080] The electron transport region may include a buffer layer, a hole blocking layer, an electron transport layer, an electron injection layer, an electron control layer, or any combination thereof.

[0081] In an embodiment, the emission layer may include a first compound, a second compound, a third compound, and a fourth compound.

[0082] In an embodiment, the first compound and the second compound may form an exciplex host.

[0083] In an embodiment, the third compound may be a sensitizer.

[0084] In an embodiment, the third compound may be a phosphorescence sensitizer.

[0085] In an embodiment, the fourth compound may be a dopant.

[0086] In an embodiment, the fourth compound may be a delayed fluorescence dopant.

[0087] In an embodiment, a difference between a highest occupied molecular orbital (HOMO) energy level of the first compound and a HOMO energy level of the second compound may be greater than or equal to about 0.2 eV.

[0088] In an embodiment, a difference between a lowest unoccupied molecular orbital (LUMO) energy level of the first compound and a LUMO energy level of the second compound may be greater than or equal to about 0.2 eV.

[0089] In an embodiment, the light emitting device may satisfy Condition 1 and Condition 2.

[0090] In an embodiment, the light emitting device may further satisfy condition 3:

[0091] [Condition 3]

[0092] E(T 1 ) H >E(T 1 ) 3 >E(T 1 ) 4

[0093] In condition 3,

[0094] E(T 1 ) Hmay represent the lowest excited triplet energy level of the excited complex host of the first compound and the second compound,

[0095] E(T 1 ) 3 may represent the lowest excited triplet energy level of the third compound, and

[0096] E(T 1 ) 4 May represent the lowest excited triplet energy level of the fourth compound.

[0097] In embodiments, energy may be transferred from the exciplex host of the first compound and the second compound to the third compound, and energy may be transferred from the third compound to the fourth compound.

[0098] In an embodiment, the difference (ΔE) between the lowest excited singlet energy level and the lowest excited triplet energy level of the fourth compound ST ) may be less than or equal to about 0.4 eV. For example, the difference (ΔE ST ) may be less than or equal to about 0.2 eV. For example, the difference (ΔE ST ) may be less than or equal to about 0.1 eV. For example, the difference (ΔE ST ) may be less than or equal to approximately 0.05 eV.

[0099] In an embodiment, the first compound and the second compound may each include a carbazole moiety.

[0100] In an embodiment, the first compound may be represented by Formula 1:

[0101] [Formula 1]

[0102]

[0103] In formula 1,

[0104] R 1 , R 2 and Ar 1 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 C2 -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, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0105] L 1 may be 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,

[0106] a1 and a2 may each independently be an integer selected from 1 to 4,

[0107] b1 may be an integer selected from 0 to 3,

[0108] R 10a Can be:

[0109] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone;

[0110] Each unsubstituted or substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60Alkoxy: 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 ) or any combination thereof;

[0111] 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 -C60 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 ) or any combination thereof; or

[0112] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ),and

[0113] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Can be independently:

[0114] hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or

[0115] Each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 Alkoxy, phenyl, biphenyl or any combination thereof substituted C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl, C 1 -C60 Alkoxy, C 3 -C 60 Carbocyclic group, C 1 -C 60 Heterocyclic group, C 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl.

[0116] In an embodiment, in Formula 1, R 1 , R 2 and Ar 1 may each independently be hydrogen, deuterium or a group represented by one of Formulae 2a to 2c:

[0117]

[0118] In Formula 2a to Formula 2c,

[0119] H 1 Can be N(R 100 ), O or S,

[0120] Z 1 To Z 5 and R 100 Can be independently compared with reference R 10a Same as described,

[0121] az1 may be an integer selected from 0 to 5,

[0122] az2 and az3 may each independently be an integer selected from 0 to 4,

[0123] az4 and az5 may each independently be an integer selected from 0 to 3, and

[0124] *Indicates the binding site with the neighboring atoms.

[0125] In an embodiment, in Formula 1, L 1 It may be a group represented by one of Formula 3a to Formula 3c:

[0126] In Formula 3a to Formula 3c,

[0127] Z 6 To Z 9 Can be independently compared with reference R 10a Same as described,

[0128] az6 may be an integer selected from 0 to 4,

[0129] az7 may be an integer selected from 0 to 7, az8 may be an integer selected from 0 to 6, and * and *' each indicate a binding site with an adjacent atom.

[0130] In an embodiment, the first compound may be one of compound HT-01 to compound HT-09:

[0131]

[0132]

[0133] In an embodiment, the second compound may be represented by Formula 2:

[0134] [Formula 2]

[0135]

[0136] In formula 2,

[0137] Ar 11 To Ar 13 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, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2),

[0138] L 11 To L 13 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,

[0139] b11 to b13 may each independently be an integer selected from 0 to 3,

[0140] R 10a Can be:

[0141] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone;

[0142] 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 ) or any combination thereof;

[0143] Each unsubstituted or substituted C3 -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 ) or any combination thereof; or

[0144] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ),and

[0145] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Can be independently:

[0146] hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or

[0147] Each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 Alkoxy, phenyl, biphenyl or any combination thereof substituted 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 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl.

[0148] In an embodiment, Ar 11 To Ar 13 and may each independently be hydrogen, deuterium, or a group represented by one of Formulae 4a to 4e:

[0149]

[0150] In Formula 4a to Formula 4e,

[0151] Z 10 To Z 15 Can be independently compared with reference Q 1 To Q 3 Same as described, and Z 16 To Z 19 Can be independently compared with reference R 10a Same as described,

[0152] az17 may be an integer selected from 0 to 7, az18 may be an integer selected from 0 to 8,

[0153] az19 may be an integer selected from 0 to 5, and

[0154] *Indicates the binding site with the neighboring atoms.

[0155] In an embodiment, in Formula 2, L 11 To L 13 may each independently be a group represented by Formula 5a:

[0156]

[0157] In Formula 5a,

[0158] Z 20 Can be compared with reference R 10a Same as described,

[0159] az20 may be an integer selected from 0 to 4, and

[0160] * and *' each indicate a binding site with an adjacent atom.

[0161] In an embodiment, the second compound may be one of compound ET01 to compound ET012:

[0162]

[0163] In an embodiment, the third compound may be represented by Formula 3: [Formula 3]

[0164]

[0165] In formula 3,

[0166] M may be titanium (Ti), cobalt (Co), copper (Cu), zinc (Zn), zirconium (Zr), ruthenium (Ru), rhodium (Rh), palladium (Pd), platinum (Pt), gold (Au), osmium (Os), iridium (Ir) or rhenium (Re),

[0167] Y 11 To Y 14 can be independently N or C,

[0168] T 11 To T 14 may each independently be a single bond, O, S, B(R'), N(R'), P(R'), C(R')(R"), Si(R')(R"), Ge(R')(R") or C(=O),

[0169] T 1 Can be single bond, double bond, *-N(R 15)-*'、*-B(R 15 )-*'、*-P(R 15 )-*'、*-C(R 15a )(R 15b )-*'、*-Si(R 15a )(R 15b )-*'、*-Ge(R 15a )(R 15b )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) 2 -*'、*-C(R 15 )=*'、*=C(R 15 )-*'、*-C(R 15a )=C(R 15b )-*', *-C(=S)-*' or *-C≡C-*',

[0170] T 2 Can be single bond, double bond, *-N(R 16 )-*'、*-B(R 16 )-*'、*-P(R 16 )-*'、*-C(R 16a )(R 16b )-*'、*-Si(R 16a )(R 16b )-*'、*-Ge(R 16a )(R 16b )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) 2 -*'、*-C(R 16 )=*'、*=C(R 16 )-*'、*-C(R 16a )=C(R 16b )-*', *-C(=S)-*' or *-C≡C-*',

[0171] R 16a and R 16b may be optionally linked to each other to form a ring,

[0172] T 3 Can be single bond, double bond, *-N(R 17 )-*'、*-B(R 17 )-*'、*-P(R 17 )-*'、*-C(R 17a )(R 17b )-*'、*-Si(R 17a)(R 17b )-*'、*-Ge(R 17a )(R 17b )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) 2 -*'、*-C(R 17 )=*'、*=C(R 17 )-*'、*-C(R 17a )=C(R 17b )-*', *-C(=S)-*' or *-C≡C-*',

[0173] Ring A 1 To Ring A 4 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,

[0174] a11 to a14 may each independently be an integer selected from 0 to 20,

[0175] R 11 To R 17 , R 15a , R 15b , R 16a , R 16b , R 17a , R 17b R' and R" may each independently be 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 -C60 Heterocyclic group, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0176] R 10a Can be:

[0177] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone;

[0178] 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) or any combination thereof;

[0179] 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 ) or any combination thereof; or

[0180] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ),and

[0181] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Can be independently:

[0182] hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or

[0183] Each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 Alkoxy, phenyl, biphenyl or any combination thereof substituted 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 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl.

[0184] In an embodiment, T 1 and T 3 Each may be a single bond.

[0185] In an embodiment, T 2 Can be *-C(R 16a )(R 16b )-*'、*-Si(R 16a )(R 16b )-*', *-S-*', or *-O-*'.

[0186] In an embodiment, in Formula 3, Ring A 1 and Ring A 2Each may be independently a moiety represented by Formula 6a or Formula 6b:

[0187]

[0188] In Formula 6a and Formula 6b,

[0189] Z 21 To Z 24 Can be independently compared with reference R 10a Same as described,

[0190] az21 may be an integer selected from 0 to 3,

[0191] az22 may be an integer selected from 0 to 4,

[0192] *Indicates the same as T in Formula 3 1 or T 3 The binding site

[0193] *' indicates the difference with T in Formula 3 11 , T 12 or the binding site of M, and

[0194] *" indicates the same as T in Formula 3 2 binding site.

[0195] In an embodiment, in Formula 3, Ring A 3 and Ring A 4 may each independently be a moiety represented by one of Formulae 7a to 7d:

[0196]

[0197] In Formula 7a to Formula 7d,

[0198] Z 25 To Z 31 Can be independently compared with reference R 10a Same as described,

[0199] az25 and az30 may each independently be an integer selected from 0 to 2,

[0200] az27 and az28 may each independently be an integer selected from 0 to 4, and * indicates the same as T in Formula 3. 1 or T 3 binding site, and

[0201] *' indicates the difference with T in Formula 3 13 , T 14 or the binding site of M.

[0202] In an embodiment, the third compound may be one of Compound 1 to Compound 32:

[0203]

[0204]

[0205]

[0206] In an embodiment, the fourth compound may be represented by Formula 4:

[0207] [Formula 4]

[0208]

[0209] In formula 4,

[0210] Ar 41 To A 44 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,

[0211] a41 and a42 are each independently an integer selected from 0 to 4, a43 to a45 are each independently an integer selected from 0 to 3,

[0212] R 41 To R 45 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, -C(Q 1 )(Q 2 )(Q 3)、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0213] R 10a Can be:

[0214] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone;

[0215] 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 ) or any combination thereof;

[0216] 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 ) or any combination thereof; or

[0217] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31) or -P(=O)(Q 31 )(Q 32 ),and

[0218] Q 1 To Q 3 , Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Can be independently:

[0219] hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or

[0220] Each unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 Alkoxy, phenyl, biphenyl or any combination thereof substituted 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 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl.

[0221] In an embodiment, in Formula 4, R 45 It may be a group represented by formula 4-1:

[0222] [Formula 4-1]

[0223]

[0224] In formula 4-1,

[0225] T 41 Can be a single bond, *-N(R 48 )-*'、*-B(R 48 )-*'、*-P(R 48 )-*'、*-C(R 48 )(R 49 )-*'、*-Si(R 48 )(R 49)-*'、*-Ge(R 48 )(R 49 )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) 2 -*'、*-C(R 48 )=*'、*=C(R 48 )-*'、*-C(R 48 )=C(R 49 )-*', *-C(=S)-*' or *-C≡C-*',

[0226] a46 and a47 may each independently be an integer selected from 0 to 4,

[0227] b41 may be an integer selected from 0 to 3,

[0228] R 46 To R 49 Can be independently compared with reference R 10a Same as described, and

[0229] *Indicates the binding site to the adjacent carbon atom.

[0230] In an embodiment, Ar 41 To Ar 44 may be each independently unsubstituted or substituted with at least one R 10a Substituted C 6 -C 60 Aryl.

[0231] In an embodiment, Ar 41 To Ar 44 may be each independently unsubstituted or substituted with at least one R 10a Substituted phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, phenanthrenyl, hexenyl, pentacenyl, rubenyl, coronenyl or ovalenyl.

[0232] In an embodiment, the fourth compound may be one of Compound D-01 to Compound D-10:

[0233]

[0234]

[0235] The light-emitting device can facilitate easier transfer of energy between the third compound and the fourth compound by satisfying Condition 1 and / or Condition 2. Accordingly, the light-emitting device can have improved color purity and improved luminous efficiency, thereby improving device life characteristics.

[0236] [Condition 1]

[0237] K FRET >K r t .

[0238] In condition 1,

[0239] K FRET may represent the Forster resonance energy transfer (FRET) rate constant between the third compound and the fourth compound, and K r t may represent a luminescence rate constant of the third compound;

[0240] [Condition 2]

[0241] R 0 >R DA .

[0242] In condition 2,

[0243] R 0 can represent the Förster radius between the third and fourth compounds, and R DA The distance between the molecules of the third compound and the molecules of the fourth compound may be represented.

[0244] When Formula 4 is satisfied, the fourth compound may further improve the light emitting efficiency and device life characteristics of a light emitting device including the fourth compound.

[0245] The method for manufacturing the light emitting device can be recognized by a person of ordinary skill in the art by referring to the synthesis examples and / or embodiments provided below.

[0246] In an embodiment, the light emitting device may further include:

[0247] A first capping layer outside the first electrode; and

[0248] A second capping layer is disposed outside the second electrode.

[0249] In an embodiment, the emission layer may include a host and a dopant.

[0250] In an embodiment, the emission layer may emit red light, green light, or blue light.

[0251] In an implementation, the dopant may be a phosphorescent dopant or a delayed fluorescent dopant.

[0252] In an embodiment, the host may include a first host including at least one electron donating group and a second host including at least one electron withdrawing group.

[0253] In an embodiment, the emission layer may further include a sensitizer.

[0254] In an embodiment, the emission layer may include a delayed fluorescent material.

[0255] In an embodiment, the emission layer may further include a first host and a second host, wherein the first host may be a hole transport compound including at least one electron donating group, and the second host may be an electron transport compound including at least one electron withdrawing group.

[0256] In an embodiment, the first host may include a first compound, and the second host may include a second compound.

[0257] In an embodiment, the emission layer may further include a sensitizer, and the sensitizer may be used as, for example, a phosphorescent sensitizer. The sensitizer may include a third compound.

[0258] In embodiments, the third compound may not emit light.

[0259] In an embodiment, the emission layer may further include at least one of an auxiliary dopant and a sensitizer.

[0260] In an embodiment, the auxiliary dopant and the sensitizer may each independently be an organic metal compound including Pt and a tetradentate ligand bonded to Pt, wherein the tetradentate ligand may include a carbene portion chemically bonded to Pt. For example, the auxiliary dopant and / or the sensitizer may include a third compound.

[0261] In embodiments, the first host and the second host may function as exciplex hosts.

[0262] The term "electron donating group" may refer to any moiety having the ability to donate electrons, and may be, for example, a π-electron-rich C 3 -C 60 The electron donating group may refer to a nitrogen-containing C 1 -C 60 Cyclic groups other than cyclic groups.

[0263] The term "electron withdrawing group" may refer to any moiety having the ability to withdraw electrons, and may be, for example, -F, -CFH 2 , -CF 2 H, -CF 3 、-CN、-NO 2 、π-electron-deficient nitrogen-containing C 1 -C 60A cyclic group or any combination thereof. However, the embodiment is not limited thereto.

[0264] Regarding the light emission path in the light emitting device according to the embodiment, the first host and the second host may form an excited complex host (first step), the energy of the excited complex host may be transferred to the third compound (second step), and the energy may be transferred from the third compound to the fourth compound (third step).

[0265] In an embodiment, an amount of the third compound in the emission layer may be in a range of about 0 parts by weight to about 50 parts by weight based on 100 parts by weight of the emission layer in total.

[0266] In an embodiment, the first host may include at least one carbazole moiety, and the second host may include at least one azine moiety.

[0267] In an embodiment, the first host may include a compound represented by Formula 301-1A or Formula 301-2A:

[0268] [Formula 301-1A]

[0269]

[0270] [Formula 301-2A]

[0271]

[0272] In Formula 301-1A and Formula 301-2A,

[0273] 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,

[0274] X 301 Can be O, S, N[(L 304 ) xb4 -R 304a ]、C(R 304a )(R 304b ) or Si(R 304a )(R 304b ),

[0275] X 302 Can be single bond, O, S, N[(L 305 ) xb5 -R 305a ]、C(R305a )(R 305b ) or Si(R 305a )(R 305b ),

[0276] X 303 Can be single bond, O, S, N[(L 306 ) xb6 -R 306a ]、C(R 306a )(R 306b ) or Si(R 306a )(R 306b ),

[0277] xb22 and xb23 may each independently be an integer selected from 0 to 10,

[0278] L 301 To L 307 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,

[0279] xb1 to xb7 may each independently be an integer selected from 0 to 5,

[0280] R 301 To R 303 , R 304a To R 306a , R 304b To R 306b and R 311 To R 314 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, 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 60Carbocyclic group, unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group, -C(Q 301 )(Q 302 )(Q 303 )、-Si(Q 301 )(Q 302 )(Q 303 )、-N(Q 301 )(Q 302 )、-B(Q 301 )(Q 302 )、-C(=O)(Q 301 )、-S(=O) 2 (Q 301 ) or -P(=O)(Q 301 )(Q 302 ),and

[0281] Q 301 To Q 303 Can be independently compared with reference Q 1 Same as described.

[0282] In an embodiment, the first host may be one of compounds HTH1 to HTH56, but the embodiment is not limited thereto:

[0283]

[0284]

[0285] In an embodiment, the second body can be represented by equation 302: [Equation 302]

[0286]

[0287] In formula 302,

[0288] X 321 Can be C(R 321 ) or N,

[0289] X 322 Can be C(R 322 ) or N,

[0290] X 323 Can be C(R 323 ) or N,

[0291] X 321 To X 323 At least one of them may each be N,

[0292] L 324 To L 326may be independently a single bond, unsubstituted or substituted by 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, *-C(Q 321 )(Q 322 )-*'、*-Si(Q 321 )(Q 322 )-*'、*-B(Q 321 )-*' or *-N(Q 321 )-*',

[0293] n324 to n326 may each independently be an integer selected from 1 to 5,

[0294] R 321 To R 326 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, 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, -C(Q 323 )(Q 324 )(Q 325 )、-Si(Q 323 )(Q 324 )(Q 325 )、-N(Q 323 )(Q 324 )、-B(Q 323 )(Q 324 )、-C(=O)(Q 323 )、-S(=O) 2 (Q 323 ) or -P(=O)(Q323 )(Q 324 ),

[0295] Q 321 To Q 325 and R 321 To R 326 Two or more adjacent groups in the formula (R) may be optionally bonded to each other to form an unsubstituted or substituted group. 10a Substituted C 5 -C 30 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 2 -C 30 Heterocyclic group,

[0296] * and *' each indicate a binding site with an adjacent atom,

[0297] R 10a may be the same as described herein, and

[0298] Q 321 To Q 326 Can be independently compared with reference Q 1 Same as described.

[0299] In an embodiment, the second host may be one of compounds ETH1 to ETH86, but the embodiment is not limited thereto:

[0300]

[0301]

[0302]

[0303] In an embodiment, the sensitizer may be represented by Formula 401A: [Formula 401A]

[0304] M 401 (L 401 ) xc1 (L 402 ) xc2

[0305]

[0306]

[0307] In Formula 401A and Formulas 402A to 402D,

[0308] M 401 It may be a first-row transition metal of the periodic table, a second-row transition metal of the periodic table, or a third-row transition metal of the periodic table,

[0309] L 401 may be a ligand represented by one of Formulae 402A to 402D,

[0310] L 402 It can be a monodentate ligand, a bidentate ligand or a tridentate ligand,

[0311] xc1 can be 1 or 2,

[0312] xc2 may be an integer selected from 0 to 4,

[0313] A 401 To A 404 Can be independently C 5 -C 30 Carbocyclic or C 1 -C 30 Heterocyclic group,

[0314] T 401 To T 404 can each independently be a single bond, a double bond, *-O-*', *-S-*', *-C(=O)-*', *-S(=O)-*', *-C(R 405 )(R 406 )-*'、*-C(R 405 )=C(R 406 )-*'、*-C(R 405 )=*'、*-Si(R 405 )(R 406 )-*'、*-B(R 405 )-*'、*-N(R 405 )-*' or *-P(R 405 )-*',

[0315] k401 to k404 can each independently be 1, 2 or 3,

[0316] Y 401 To Y 404 can each independently be a single bond (eg, a covalent bond or a coordination bond), *-O-*', *-S-*', *-C(R 407 )(R 408 )-*'、*-Si(R 407 )(R 408 )-*'、*-B(R 407 )-*'、*-N(R 407 )-*' or *-P(R 407 )-*',

[0317] * in Formula 402A to Formula 402D 1 ,* 2 ,* 3 and*4 Each indicates the same as M in formula 401A 401 The binding site

[0318] R 401 To R 408 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, 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, -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),

[0319] R 401 To R 408 may be optionally bonded to each other to form an unsubstituted or substituted R 10a Substituted C 5 -C60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 Heterocyclic group,

[0320] b401 to b404 may each independently be an integer selected from 0 to 10,

[0321] * and *' each indicate a binding site with an adjacent atom, and

[0322] Q 1 To Q 3 and R 10a Each may be the same as described herein.

[0323] In an embodiment, the compound represented by Formula 401A may be a carbene complex.

[0324] The term "carbene complex" as used herein may be a complex including a metal and a ligand bonded to the metal, wherein at least one bond between the metal and the ligand is a bond between the metal and a carbon atom of the carbene moiety.

[0325] In an embodiment, the sensitizer may include a compound represented by Formula 401A.

[0326] In an embodiment, the sensitizer may include one of Compound PD1 to Compound PD41, but the embodiment is not limited thereto:

[0327]

[0328]

[0329]

[0330] In an embodiment, R in Formula 301-1A and Formula 301-2A 301 To R 303 , R 304a To R 306a , R 304b To R 306b and R 311 To R 314 , R in Formula 302 321 To R 326 and R in Formula 401A and Formula 402A to Formula 402D 401 To R 408 Can be independently:

[0331] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20Alkyl or C 1 -C 20 Alkoxy;

[0332] Each of the following C 1 -C 20 Alkyl or C 1 -C 20 Alkoxy: deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 10 Alkyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridinyl, pyrimidinyl or any combination thereof;

[0333] each unsubstituted or substituted by cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, tetrahydronaphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-benzophenanthryl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthridinyl , acridinyl, phenanthroline, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, thiadiazolyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl or azadibenzothiophenyl: deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , hydroxyl, cyano, nitro, amidino, hydrazine, hydrazone, C 1 -C 20 Alkyl, C1 -C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, C 1 -C 10 Alkylphenyl, naphthyl, tetrahydronaphthyl, fluorenyl, phenanthryl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-benzophenanthryl, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, phthalazinyl, naphthyridinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthridinyl, acridinyl, phenanthroline, phenazinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazine, thiadiazolyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, azacarbazolyl, azadibenzofuranyl, azadibenzothiophenyl, azafluorenyl, azadibenzothiophenyl, -Si(Q) 31 )(Q 32 )(Q 33 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 )、-P(=O)(Q 31 )(Q 32 ) or any combination thereof; or

[0334] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ),and

[0335] Q1 To Q 3 and Q 31 To Q 33 Each may be the same as described herein.

[0336] In an embodiment, R in Formula 301-1A and Formula 301-2A 301 To R 303 , R 304a To R 306a , R 304b To R 306b and R 311 To R 314 , R in Formula 302 321 To R 326 and R in Formula 401A and Formula 402A to Formula 402D 401 To R 408 Can be independently:

[0337] Hydrogen, deuterium, -F, -Cl, -Br, -I, -CD 3 、-CD 2 H.-CDH 2 , -CF 3 , -CF 2 H, -CFH 2 , cyano, nitro, C 1 -C 60 Alkyl, C 2 -C 60 Alkenyl, C 2 -C 60 Alkynyl or C 1 -C 60 Alkoxy;

[0338] A group represented by one of Formula 9-1 to Formula 9-61 or a group represented by one of Formula 10-1 to Formula 10-348; or

[0339] -C(Q 1 )(Q 2 )(Q 3 )、-Si(Q 1 )(Q 2 )(Q 3 )、-N(Q 1 )(Q 2 )、-B(Q 1 )(Q 2 )、-C(=O)(Q 1 )、-S(=O) 2 (Q 1 ) or -P(=O)(Q 1 )(Q 2 ):

[0340]

[0341]

[0342]

[0343]

[0344]

[0345]

[0346]

[0347]

[0348]

[0349] In Formulae 9-1 to 9-61 and 10-1 to 10-348, * indicates a binding site with an adjacent atom, Ph represents a phenyl group, TMS represents a trimethylsilyl group, and D indicates a deuterium atom, and

[0350] Q 1 To Q 3 Each may be the same as described herein.

[0351] In embodiments, the electron transport region of the light emitting device may include a hole blocking layer, and the hole blocking layer may include a phosphine oxide-containing compound, a silicon-containing compound, or any combination thereof. In embodiments, the hole blocking layer may contact (eg, directly contact) the emission layer.

[0352] In an embodiment, the light emitting device may include a capping layer outside the first electrode or outside the second electrode.

[0353] In an embodiment, the light emitting device may further include at least one of a first capping layer outside the first electrode and a second capping layer outside the second electrode, wherein at least one of the first capping layer and the second capping layer may include one of the first compound to the fourth compound. The first capping layer and / or the second capping layer may each be the same as described herein.

[0354] In an embodiment, the light emitting device may further include:

[0355] a first capping layer outside the first electrode and including at least one of the first to fourth compounds;

[0356] A second capping layer outside the second electrode and including at least one of the first to fourth compounds; or

[0357] Both a first capping layer and a second capping layer.

[0358] The expression “(the interlayer and / or the capping layer) includes at least one of the first to fourth compounds” as used herein may be interpreted as “(the interlayer and / or the capping layer) may include one type of compound belonging to at least one category among the first to fourth compounds or two or more different types of compounds belonging to at least one category among the first to fourth compounds”.

[0359] In an embodiment, the interlayer and / or the capping layer may include only compound A as at least one of the first compound to the fourth compound. In this regard, compound A may be present in the emission layer of the light-emitting device. In an embodiment, the interlayer may include both compound A and compound B as one of the first compound to the fourth compound. In this regard, compound A and compound B may be present in the same layer (e.g., both compound A and compound B may be present in the emission layer) or may be present in different layers (e.g., compound A may be present in the emission layer, and compound B may be present in the electron transport region).

[0360] The term "interlayer" as used herein may be a single layer and / or a plurality of layers between a first electrode and a second electrode of a light emitting device.

[0361] Another embodiment provides an electronic device that may include 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 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 an embodiment, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof. The electronic device may be the same as described herein.

[0362] Another embodiment provides an electronic device that may include a light emitting device.

[0363] In embodiments, the electronic 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 mobile phone, 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 three-dimensional (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, or a sign.

[0364] [ Figure 1 Description]

[0365] Figure 1 1 is a schematic cross-sectional view of a light emitting device 10 according to an embodiment. The light emitting device 10 includes a first electrode 110 , an interlayer 130 , and a second electrode 150 .

[0366] Below, we will refer to Figure 1 A structure of a light emitting device 10 and a method of manufacturing the light emitting device 10 according to an embodiment are described.

[0367] [First electrode 110]

[0368] exist Figure 1 In the embodiment, the substrate may be further included under the first electrode 110 or on the second electrode 150. In an embodiment, the substrate may be a glass substrate or a plastic substrate. In an embodiment, the substrate may be a flexible substrate and may include plastic having excellent heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0369] The first electrode 110 may be formed, for example, by depositing or sputtering a material for forming the first electrode 110 on a substrate. When the first electrode 110 is an anode, the material for forming the first electrode 110 may be a high work function material that facilitates injection of holes.

[0370] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. In an embodiment, when the first electrode 110 is a transmissive electrode, a material for forming the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO 2 ), zinc oxide (ZnO), or any combination thereof. In an embodiment, when the first electrode 110 is a semi-transmissive electrode or a reflective electrode, the material used to form the first electrode 110 may include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof.

[0371] The first electrode 110 may have a single-layer structure consisting of a single layer or a multi-layer structure including a plurality of layers. For example, the first electrode 110 may have a triple-layer structure of ITO / Ag / ITO.

[0372] [Interlayer 130]

[0373] The interlayer 130 may be disposed on the first electrode 110. The interlayer 130 may include an emission layer.

[0374] 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 .

[0375] In addition to various organic materials, the interlayer 130 may further include metal-containing compounds (such as organic metal compounds) or inorganic materials (such as quantum dots), etc.

[0376] In an embodiment, the interlayer 130 may include two or more emission units stacked between the first electrode 110 and the second electrode 150, and at least one charge generation layer that may be respectively between adjacent units of the two or more emission units. When the interlayer 130 includes two or more emission units and at least one charge generation layer, the light-emitting device 10 may be a tandem light-emitting device.

[0377] [Hole Transport Region in Interlayer 130]

[0378] The hole transport region may have a single-layer structure composed of a layer (composed of a single material), a single-layer structure composed of a layer including different materials, or a multi-layer structure including a plurality of layers (including different materials).

[0379] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof.

[0380] For example, the hole transport region may have a multilayer structure including a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission auxiliary layer structure, a hole injection layer / emission auxiliary layer structure, a hole transport layer / emission auxiliary layer structure, or a hole injection layer / hole transport layer / emission auxiliary layer structure, wherein the layers of each structure are stacked from the first electrode 110 in their respective prescribed order, but the structure of the hole transport region is not limited thereto.

[0381] The hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0382] [Formula 201]

[0383]

[0384] [Formula 202]

[0385]

[0386] In equation 201 and equation 202,

[0387] 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,

[0388] 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,

[0389] xa1 to xa4 may each independently be an integer selected from 0 to 5,

[0390] xa5 may be an integer selected from 1 to 10,

[0391] 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,

[0392] 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 (e.g., carbazole groups, etc.) (e.g., compound HT16, etc.),

[0393] R 203and R 204 may be optionally substituted via a single bond, unsubstituted or substituted 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 bonded to each other to form an unsubstituted or substituted group. 10a Substituted C 8 -C 60 polycyclic groups, and

[0394] na1 may be an integer selected from 1 to 4.

[0395] For example, the compound represented by Formula 201 and the compound represented by Formula 202 may include at least one of the groups represented by Formulas CY201 to CY217:

[0396]

[0397] Among them, in formula CY201 to formula CY217, R 10b and R 10c Can be independently compared with reference R 10a Same as described, CY 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 10a replace.

[0398] In an embodiment, in Formula CY201 to Formula CY217, ring CY 201 To Ring CY 204 Each independently may be phenyl, naphthyl, phenanthryl or anthracenyl.

[0399] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may each independently include at least one of the groups represented by Formulas CY201 to CY203.

[0400] In an embodiment, the compound represented by 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.

[0401] In an embodiment, in Formula 201, xa1 may be 1, R 201may be one of the groups represented by Formula CY201 to Formula CY203, xa2 may be 0, and R 202 It may be one of the groups represented by Formula CY204 to Formula CY207.

[0402] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may each not include the groups represented by Formula CY201 to Formula CY203.

[0403] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may each not include the groups represented by Formula CY201 to Formula CY203, and may each independently include at least one of the groups represented by Formula CY204 to Formula CY217.

[0404] In an embodiment, the compound represented by Formula 201 and the compound represented by Formula 202 may each not include the groups represented by Formula CY201 to Formula CY217.

[0405] In an embodiment, the hole transport region may include 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), or any combination thereof:

[0406]

[0407]

[0408]

[0409]

[0410]

[0411] The thickness of the hole transport region may be about to about For example, the thickness of the hole transport region may be in the range of about to about When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer may be about to about and the thickness of the hole transport layer may be in the range of about to about For example, the thickness of the hole injection layer may be in the range of about to about For example, the thickness of the hole transport layer may be in the range of 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.

[0412] The emission assisting layer can increase light emission efficiency by compensating the optical resonance distance according to the wavelength of light emitted by the emission layer, and the electron blocking layer can block electrons from the emission layer from leaking to the hole transporting region. Materials that can be included in the hole transporting region can be included in the emission assisting layer and the electron blocking layer.

[0413] [p-dopant]

[0414] In addition to these materials, the hole transport region may further include a charge generation material for improvement of conductive properties. The charge generation material may be uniformly or non-uniformly dispersed in the hole transport region (eg, in the form of a single layer composed of the charge generation material).

[0415] The charge generating material may be, for example, a p-dopant.

[0416] For example, the p-dopant can have a lowest unoccupied molecular orbital (LUMO) energy level of less than or equal to about -3.5 eV.

[0417] In an embodiment, the p-dopant may include a quinone derivative, a cyano group-containing compound, a compound including the element EL1 and the element EL2, or any combination thereof.

[0418] Examples of the quinone derivative may include TCNQ, F4-TCNQ, and the like.

[0419] Examples of the cyano group-containing compound may include HAT-CN and a compound represented by Formula 221, and the like:

[0420]

[0421] [Formula 221]

[0422]

[0423] In formula 221,

[0424] R 221 To R 223 may be each independently unsubstituted or substituted with at least one R10a Substituted C 3 -C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C 1 -C 60 a heterocyclic group, and

[0425] 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 or any combination thereof 1 -C 20 or any combination thereof.

[0426] In a compound including an element EL1 and an element EL2, the element EL1 may be a metal, a metalloid, or any combination thereof, and the element EL2 may be a nonmetal, a metalloid, or any combination thereof.

[0427] Examples of metals may include alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt ( Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), etc.); late transition metals (e.g., zinc (Zn), indium (In), 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), lutetium (Lu), etc.); etc.

[0428] Examples of metalloids may include silicon (Si), antimony (Sb), tellurium (Te), and the like.

[0429] Examples of non-metal may include oxygen (O) and halogen (eg, F, Cl, Br, I, etc.), and the like.

[0430] Examples of compounds including element EL1 and element EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, metal iodides, etc.), metalloid halides (e.g., metalloid fluorides, metalloid chlorides, metalloid bromides, metalloid iodides, etc.), metal tellurides, or any combination thereof.

[0431] Examples of metal oxides may include tungsten oxides (eg, WO, W 2 O 3 , WO 2 , WO 3 , W 2 O 5 etc.), vanadium oxides (e.g., VO, V 2 O 3 , VO 2 、V 2 O 5 etc.), molybdenum oxides (e.g., MoO, Mo 2 O 3 、MoO 2 、MoO 3 、Mo 2 O 5 etc.) and rhenium oxides (e.g., ReO 3 etc.

[0432] Examples of the metal halide may include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, lanthanide metal halides, and the like.

[0433] Examples of alkali metal halides may include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, CsI, and the like.

[0434] Examples of alkaline earth metal halides may include 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 wait.

[0435] Examples of transition metal halides may include titanium halides (eg, TiF 4 、TiCl 4 、TiBr 4 、TiI 4 etc.), zirconium halides (e.g., ZrF 4 、ZrCl 4 , ZrBr 4 , ZrI 4 etc.), hafnium halides (e.g., HfF 4 , HfCl 4 , HfBr 4 , HfI 4 etc.), vanadium halides (e.g., VF 3 、VCl 3 , VBr 3 VI 3 etc.), niobium halides (e.g., NbF 3 、NbCl 3 , NbBr 3 , NbI 3 etc.), tantalum halides (e.g., TaF 3 、TaCl 3 、TaBr 3 、TaI 3 etc.), chromium halides (e.g., CrF 3 CrCl 3 CrBr 3 CrI 3 etc.), molybdenum halides (e.g., MoF 3 、MoCl 3 、MoBr 3 、MoI 3 etc.), tungsten halides (e.g., WF 3 、WCl 3 , WBr 3 , WI 3 etc.), manganese halides (e.g., MnF 2 、MnCl 2 、MnBr 2 、MnI 2 etc.), technetium halides (e.g., TcF 2 , TcCl 2 , TcBr 2 , TcI 2 etc.), rhenium halides (e.g., ReF2 、ReCl 2 、ReBr 2 、ReI 2 etc.), ferrous halides (e.g., FeF 2 、FeCl 2 , FeBr 2 ,FeI 2 etc.), ruthenium halides (e.g., RuF 2 、RuCl 2 ,RuBr 2 , RuI 2 etc.), osmium halides (e.g., OsF 2 , OsCl 2 、OsBr 2 , OsI 2 etc.), cobalt halides (e.g., CoF 2 、CoCl 2 ,CoBr 2 、CoI 2 etc.), rhodium halides (e.g., RhF 2 , RhCl 2 , RhBr 2 , RhI 2 etc.), iridium halides (e.g., IrF 2 、IrCl 2 ,IrBr 2 ,IrI 2 etc.), nickel halides (e.g., NiF 2 、NiCl 2 、NiBr 2 , NiI 2 etc.), palladium halides (e.g., PdF 2 , PdCl 2 , PdBr 2 , PdI 2 etc.), platinum halides (e.g., PtF 2 , PtCl 2 , PtBr 2 , PtI 2 etc.), cuprous halides (e.g., CuF, CuCl, CuBr, CuI, etc.), silver halides (e.g., AgF, AgCl, AgBr, AgI, etc.), and gold halides (e.g., AuF, AuCl, AuBr, AuI, etc.), etc.

[0436] Examples of late transition metal halides may include zinc halides (eg, ZnF 2 、ZnCl 2 、ZnBr 2 、ZnI 2etc.), indium halides (e.g., InI 3 etc.) and tin halides (e.g., SnI 2 etc.

[0437] 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 SmI 3 .

[0438] Examples of metalloid halides may include antimony halides (eg, SbCl 5 etc.

[0439] Examples of metal tellurides may include alkali metal tellurides (eg, Li 2 Te、Na 2 Te, K 2 Te、Rb 2 Te, Cs 2 Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe, 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, 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, LuTe, etc.), etc.

[0440] [Emitting layer in interlayer 130]

[0441] 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 an embodiment, 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 may be separated from each other to emit white light. In an embodiment, 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 may be mixed with each other in a single layer to emit white light.

[0442] In an embodiment, the emission layer may include a host and a dopant. The dopant may include a phosphorescent dopant, a fluorescent dopant, or any combination thereof.

[0443] The amount of the dopant in the emission layer may be in the range of about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host.

[0444] In an embodiment, the emissive layer may include quantum dots.

[0445] In an embodiment, the emission layer may include a delayed fluorescent material. The delayed fluorescent material may be used as a host or a dopant in the emission layer.

[0446] The thickness of the emission layer can be about to about For example, the thickness of the emission layer may be in the range of about to about When the thickness of the emission layer is within any of these ranges, excellent light emitting characteristics can be obtained without significantly increasing the driving voltage.

[0447] [main body]

[0448] The host may further include a compound represented by Formula 301:

[0449] [Formula 301]

[0450] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 .

[0451] In formula 301,

[0452] 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,

[0453] xb11 can be 1, 2 or 3,

[0454] xb1 may be an integer selected from 0 to 5,

[0455] 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 ),

[0456] xb21 may be an integer selected from 1 to 5, and

[0457] Q 301 To Q 303 Can be independently compared with reference Q 1 Same as described.

[0458] For example, in Formula 301, when xb11 is 2 or greater, two or more Ar 301 Can be connected to each other via a single bond.

[0459] In an embodiment, the host may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0460] [Formula 301-1]

[0461]

[0462] [Formula 301-2]

[0463]

[0464] In Formula 301-1 and Formula 301-2,

[0465] 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,

[0466] X 301 Can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 )(R 305 ) or Si(R 304 )(R 305 ),

[0467] xb22 and xb23 can each independently be 0, 1 or 2,

[0468] L 301 , xb1 and R 301 may each independently be the same as described herein,

[0469] L 302 To L 304 Can be independently compared with reference L 301 Same as described,

[0470] xb2 to xb4 may each independently be the same as described with reference to xb1, and

[0471] R 302 To R 305 and R 311 To R 314 Can be respectively compared with reference R 301 Same as described.

[0472] In embodiments, the host may include an alkaline earth metal complex, a late transition metal complex, or any combination thereof. In embodiments, the host may include a Be complex (eg, compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0473] In an embodiment, the host may include one of 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), or any combination thereof:

[0474]

[0475]

[0476]

[0477]

[0478]

[0479]

[0480]

[0481] [Phosphorescent dopant]

[0482] The phosphorescent dopant may include at least one transition metal as a central metal.

[0483] The phosphorescent dopant may include a monodentate ligand, a bidentate ligand, a tridentate ligand, a tetradentate ligand, a pentadentate ligand, a hexadentate ligand, or any combination thereof.

[0484] The phosphorescent dopant may be electrically neutral.

[0485] For example, the phosphorescent dopant may include an organometallic compound represented by Formula 401:

[0486] [Formula 401]

[0487] M(L 401 ) xc1 (L 402 ) xc2 .

[0488] In formula 401,

[0489] 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)),

[0490] 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,

[0491] L 402 may be an organic ligand, and xc2 may be 0, 1, 2, 3 or 4, wherein when xc2 is 2 or greater, two or more L 402 may be the same or different from each other,

[0492] [Formula 402]

[0493]

[0494] In formula 402, X 401 and X 402 can be independently N or C,

[0495] Ring A 401 and Ring A 402 Can be independently C 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group,

[0496] 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=*',

[0497] X 403 and X 404can 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 ),

[0498] Q 411 To Q 414 can each be independently compared with reference to Q as defined herein 1 Same as described,

[0499] 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 ),

[0500] Q 401 To Q 403 can each be independently compared with reference to Q as defined herein 1 Same as described,

[0501] xc11 and xc12 may each independently be an integer selected from 0 to 10, and

[0502] * and *' in Formula 402 each indicate a binding site with M in Formula 401.

[0503] For example, in equation 402, X 401 may be nitrogen and X 402 Can be carbon, or X 401 and X 402 Each may be nitrogen.

[0504] In an embodiment, in Formula 401, when xc1 is 2 or greater, two or more L 401 The two rings A 401 Optionally, T as a linker 402 connected to each other, and the two rings A 402 Optionally, T as a linking group 403 Connected to each other (see Compound PD1 to Compound PD4 and Compound PD7). 402 and T 403 can each be independently compared with reference to T as defined herein 401 Same as described.

[0505] In formula 401, L 402 It can be an organic ligand. For example, L 402 It may include a halogen group, a diketone group (e.g., acetylacetonate group), a carboxylic acid group (e.g., picolinate group), -C(=O), an isonitrile group, a -CN group, a phosphorus-containing group (e.g., phosphine group, phosphite group, etc.), or any combination thereof.

[0506] The phosphorescent dopant may include, for example, one of Compound PD1 to Compound PD39 or any combination thereof:

[0507]

[0508]

[0509]

[0510] [Fluorescent dopant]

[0511] In an embodiment, the fluorescent dopant may include an amine group-containing compound, a styrene group-containing compound, or any combination thereof.

[0512] [Formula 501]

[0513]

[0514] In formula 501,

[0515] Ar 501 , L 501 To L 503 , R 501 and R 502 may be each independently unsubstituted or substituted with at least one R10a 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,

[0516] xd1 to xd3 may each independently be 0, 1, 2 or 3, and

[0517] xd4 can be 1, 2, 3, 4, 5 or 6.

[0518] In an embodiment, in Formula 501, Ar 501 It may be a condensed ring group in which three or more monocyclic groups are condensed together (for example, anthracenyl, 1,2-triphenylenyl, pyrenyl, etc.).

[0519] In an embodiment, in formula 501, xd4 may be 2.

[0520] In an embodiment, the fluorescent dopant may include one of compounds FD1 to FD37, DPVBi, DPAVBi, or any combination thereof:

[0521]

[0522]

[0523]

[0524] [Delayed fluorescence material]

[0525] In an embodiment, the emission layer may include a delayed fluorescent material.

[0526] In the specification, the delayed fluorescent material may be selected from compounds capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0527] The delayed fluorescent material included in the emission layer may serve as a host or a dopant depending on the types of other materials included in the emission layer.

[0528] In an embodiment, 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 in the range of about 0 eV to about 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 above range, up-conversion of the delayed fluorescent material from the triplet state to the singlet state may effectively occur, and thus, the light emitting device 10 may have improved luminous efficiency.

[0529] In an embodiment, the delayed fluorescent material may include: at least one electron donor (eg, a π-electron-rich C 3 -C 60 cyclic groups, such as carbazolyl) and at least one electron acceptor (e.g., sulfoxide, cyano, or π-electron-deficient nitrogen-containing C 1 -C 60 cyclic groups, etc.), or a C-containing material comprising at least two cyclic groups fused to each other and sharing boron (B) 8 -C 60 Materials with polycyclic groups, etc.

[0530] Examples of the delayed fluorescent material may include at least one of Compound DF1 to Compound DF14:

[0531]

[0532]

[0533] [Quantum dot]

[0534] In an embodiment, the emissive layer may include quantum dots.

[0535] In the specification, the quantum dot may be a crystal of a semiconductor compound, and may include any material capable of emitting light of various emission wavelengths according to the size of the crystal.

[0536] The diameter of a quantum dot may be in the range of, for example, about 1 nm to about 10 nm.

[0537] The quantum dots may be synthesized by a wet chemical process, a metal organic chemical vapor deposition process (MOCVD), a molecular beam epitaxy process (MBE), or any similar process.

[0538] The wet chemical process is a method that includes mixing a precursor material with an organic solvent and 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 by a process that is less expensive and easier to perform than a vapor deposition method (such as metal organic chemical vapor deposition or molecular beam epitaxy).

[0539] Quantum dots may include: Group II-VI semiconductor compounds; Group III-V semiconductor compounds; Group III-VI semiconductor compounds; Group I-III-VI semiconductor compounds; Group IV-VI semiconductor compounds; Group IV elements or compounds; or any combination thereof.

[0540] Examples of II-VI semiconductor compounds may include binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, and MgS; ternary compounds such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, Cd ZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe and MgZnS, etc.; quaternary compounds, such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and HgZnSTe, etc.; or any combination thereof.

[0541] Examples of III-V semiconductor compounds may include binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and InSb, etc.; ternary compounds such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, and InPSb, etc.; quaternary compounds such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and InAlPSb, etc.; or any combination thereof. In an embodiment, the III-V semiconductor compound may further include a Group II element. Examples of the Group III-V semiconductor compound further including the Group II element may include InZnP, InGaZnP, InAlZnP, and the like.

[0542] Examples of III-VI semiconductor compounds may include binary compounds such as GaS, GaSe, Ga 2 Se 3 、GaTe、InS、InSe、In 2 S 3 、In 2 Se 3 and InTe, etc.; ternary compounds, such as InGaS 3 and InGaSe 3 etc.; or any combination thereof.

[0543] Examples of Group I-III-VI semiconductor compounds may include: ternary compounds such as AgInS, AgInS 2 、CuInS、CuInS 2 、CuGaO 2 、AgGaO 2 and AgAlO 2 etc.; or any combination thereof.

[0544] Examples of Group IV-VI semiconductor compounds may include: binary compounds, such as SnS, SnSe, SnTe, PbS, PbSe and PbTe; ternary compounds, such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe and SnPbTe; quaternary compounds, such as SnPbSSe, SnPbSeTe and SnPbSTe; or any combination thereof.

[0545] Examples of Group IV elements or compounds may include: single elements such as Si and Ge, etc.; binary compounds such as SiC and SiGe, etc.; or any combination thereof.

[0546] Each element included in the multi-element compound such as a binary compound, a ternary compound, or a quaternary compound may be present in the particle at a uniform concentration or at a non-uniform concentration.

[0547] In an embodiment, the quantum dot may have a single structure in which the concentration of each element in the quantum dot is uniform, or the quantum dot may have a core-shell structure. For example, the material included in the core and the material included in the shell may be different from each other.

[0548] The shell of the quantum dot can be used as a protective layer to prevent chemical denaturation of the core to maintain semiconductor properties, and / or can be used as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be monolayer or multilayer. The interface between the core and the shell can have a concentration gradient, wherein the concentration of the material present in the shell decreases toward the center of the core.

[0549] Examples of materials forming the shell of quantum dots may include metal oxides, metalloid oxides or non-metal oxides, semiconductor compounds, or any combination thereof. Examples of metal oxides, metalloid oxides or non-metal oxides may include: 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 2O 3 , Fe 3 O 4 , CoO, Co 3 O 4 and NiO, etc.; ternary compounds, such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe 2 O 4 and CoMn 2 O 4 etc.; or any combination thereof. Examples of semiconductor compounds 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; or any combination thereof. Examples of semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0550] The full width at half maximum (FWHM) of the emission wavelength spectrum of the quantum dot may be less than or equal to about 45 nm. For example, the FWHM of the emission wavelength spectrum of the quantum dot may be less than or equal to about 40 nm. For example, the FWHM of the emission wavelength spectrum of the quantum dot may be less than or equal to about 30 nm. When the FWHM of the quantum dot is within any of these ranges, the color purity or color reproducibility of the quantum dot may be improved. Light emitted by the quantum dot may be emitted in all directions so that a wide viewing angle may be improved.

[0551] In embodiments, the quantum dots may be in the form of spherical nanoparticles, pyramidal nanoparticles, multi-armed nanoparticles, cubic nanoparticles, nanotubes, nanowires, nanofibers, nanoplates, or the like.

[0552] By controlling the size of the quantum dots, the band gap can be adjustable so that light with various wavelength bands can be obtained from the emission layer including the quantum dots. Accordingly, by using quantum dots of different sizes, a light emitting device that emits light of various wavelengths can be realized. In an embodiment, the size of the quantum dots can be selected to emit red light, green light, and / or blue light. The size of the quantum dots can be configured to emit white light by combining light of various colors.

[0553] [Electron Transport Region in Interlayer 130]

[0554] The electron transport region may have a single-layer structure composed of a layer (composed of a single material), a single-layer structure composed of a layer including different materials, or a multi-layer structure including a plurality of layers (including different materials).

[0555] The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0556] In an embodiment, the electron transport region may have an electron transport layer / electron injection layer structure, a hole blocking layer / electron transport layer / electron injection layer structure, an electron control layer / electron transport layer / electron injection layer structure, or a buffer layer / electron transport layer / electron injection layer structure, wherein the layers of each structure may be stacked from the emission layer in their respective prescribed order, but the structure of the electron transport region is not limited thereto.

[0557] In an embodiment, the electron transport region (eg, 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.

[0558] In an embodiment, the electron transport region may include a compound represented by Formula 601:

[0559] [Formula 601]

[0560] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 .

[0561] In formula 601,

[0562] 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,

[0563] xe11 can be 1, 2 or 3,

[0564] xe1 can be 0, 1, 2, 3, 4 or 5,

[0565] R 601 may be 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 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 ),

[0566] Q 601 To Q 603 can each be independently compared with reference to Q as defined herein 1 Same as described,

[0567] xe21 can be 1, 2, 3, 4, or 5, and

[0568] Ar 601 , L 601 and R 601 At 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.

[0569] In an embodiment, in Formula 601, when xe11 is 2 or greater, two or more Ar 601 Can be connected to each other via a single bond.

[0570] In an embodiment, in Formula 601, Ar 601 may be unsubstituted or substituted with at least one R 10a Substituted anthracenyl.

[0571] In an embodiment, the electron transport region may include a compound represented by Formula 601-1:

[0572] [Formula 601-1]

[0573]

[0574] In formula 601-1,

[0575] 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 X614 To X 616 At least one of them may each be N,

[0576] L 611 To L 613 Can be independently compared with reference L 601 Same as described,

[0577] xe611 to xe613 can each independently be the same as described with reference to xe1,

[0578] R 611 To R 613 Can be independently compared with reference R 601 Same as described, and

[0579] 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 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.

[0580] In an embodiment, in Formula 601 and Formula 601-1, xe1 and xe611 to xe613 may each independently be 0, 1, or 2.

[0581] In an embodiment, the electron transport region may include: one of Compound ET1 to Compound ET45; 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP); 4,7-diphenyl-1,10-phenanthroline (Bphen); Alq 3 ; BAlq; TAZ; NTAZ; or any combination thereof:

[0582]

[0583]

[0584]

[0585] The thickness of the electron transport region can be about to about For example, the thickness of the electron transport region may be in the range of about to about When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer or any combination thereof, the thickness of the buffer layer, the hole blocking layer or the electron control layer may be independently about to about and the thickness of the electron transport layer can be in the range of about to about For example, the thickness of the buffer layer, the hole blocking layer, or the electron control layer may be independently about to about For example, the thickness of the electron transport layer may be in the range of 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.

[0586] The electron transport region (eg, an electron transport layer in the electron transport region) may further include a metal-containing material in addition to the above-mentioned materials.

[0587] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex, or any 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 with 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, or any combination thereof.

[0588] In an embodiment, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) or compound ET-D2:

[0589]

[0590] 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 contact (eg, directly contact) the second electrode 150.

[0591] The electron injection layer may have a single-layer structure composed of a layer (composed of a single material), a single-layer structure composed of a layer including different materials, or a multilayer structure including a plurality of layers (including different materials).

[0592] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0593] The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metal may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metal may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0594] The alkali metal compound, the alkaline earth metal compound, and the rare earth metal compound may be oxides, halides (e.g., fluorides, chlorides, bromides, iodides, etc.), or tellurides of the alkali metal, the alkaline earth metal, and the rare earth metal, or any combination thereof.

[0595] The alkali metal compound may include: alkali metal oxides, such as Li 2 O, Cs 2 O, and K 2 O, etc.; alkali metal halides, such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and KI, etc.; or any combination thereof. The alkaline earth metal compound may include alkaline earth metal oxides, such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying 0 < x < 1) and Ba x Ca 1-x O (where x is a real number satisfying 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 or any combination thereof. In an embodiment, 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 、Nd2 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 2 Te 3 , Yb 2 Te 3 He Lu 2 Te 3 wait.

[0596] The alkali metal complex, alkaline earth metal complex and rare earth metal complex may include: an alkali metal ion, an alkaline earth metal ion or a rare earth metal ion, and a ligand bonded to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene or any combination thereof.

[0597] In an embodiment, the electron injection layer may be composed 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, or any combination thereof as described above. In an embodiment, the electron injection layer may further include an organic material (e.g., a compound represented by Formula 601).

[0598] In an embodiment, the electron injection layer may be composed of an alkali metal compound (e.g., an alkali metal halide); or the electron injection layer may be composed of an alkali metal compound (e.g., an alkali metal halide), and an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof. For example, the electron injection layer may be a KI:Yb co-deposition layer, a RbI:Yb co-deposition layer, a LiF:Yb co-deposition layer, and the like.

[0599] When the electron injection layer further includes an organic material, 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 or any combination thereof may be uniformly or non-uniformly dispersed in a matrix including the organic material.

[0600] The thickness of the electron injection layer can be about to about For example, the thickness of the electron injection layer may be about to about When the thickness of the electron injection layer is within any of these ranges, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage.

[0601] [Second electrode 150]

[0602] The second electrode 150 may be disposed on the interlayer 130 having the aforementioned structure. The second electrode 150 may be a cathode as an electron injection electrode. When the second electrode 150 is a cathode, the material used to form the second electrode 150 may include a material having a low work function, such as a metal, an alloy, an electrically conductive compound, or any combination thereof.

[0603] The second electrode 150 may include Li, Ag, Mg, Al, Al-Li, Ca, Mg-In, Mg-Ag, Yb, Ag-Yb, ITO, IZO, or any combination thereof. The second electrode 150 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0604] The second electrode 150 may have a single-layer structure or a multi-layer structure.

[0605] [Capping layer]

[0606] The light emitting device 10 may include a first capping layer outside the first electrode 110 and / or a second capping layer outside the second electrode 150. In an embodiment, the light emitting device 10 may have a structure in which the first capping layer, the first electrode 110, the interlayer 130, and the second electrode 150 are stacked in the prescribed order, a structure in which the first electrode 110, the interlayer 130, the second electrode 150 and the second capping layer are stacked in the 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 stacked in the prescribed order.

[0607] The light generated in the emission layer of the interlayer 130 of the light emitting device 10 can be extracted toward the outside through the first electrode 110 which can be a semi-transmissive electrode or a transmissive electrode and through the first capping layer. The light generated in the emission layer of the interlayer 130 of the light emitting device 10 can be extracted toward the outside through the second electrode 150 which can be a semi-transmissive electrode or a transmissive electrode and through the second capping layer.

[0608] The first capping layer and the second capping layer can each increase the external emission efficiency according to the principle of constructive interference. Accordingly, the light extraction efficiency of the light emitting device 10 is increased, so that the light emitting efficiency of the light emitting device 10 can be improved.

[0609] The first capping layer and the second capping layer may each include a material having a refractive index greater than or equal to 1.6 (with respect to a wavelength of about 589 nm).

[0610] 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.

[0611] 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, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine-containing compound may be optionally substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In an embodiment, at least one of the first capping layer and the second capping layer may each independently include an amine-containing compound.

[0612] In an embodiment, at least one of the first capping layer and the second capping layer may each independently include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof.

[0613] In an embodiment, at least one of the first capping layer and the second capping layer may each independently include one of compounds HT28 to HT33, one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0614]

[0615] [membrane]

[0616] The first compound represented by Formula 1, the second compound represented by Formula 2, the third compound represented by Formula 3, and / or the fourth compound represented by Formula 4 may be included in various films. Accordingly, another embodiment provides a film that may include the first compound, the second compound, the third compound, and / or the fourth compound as described herein. The film may be, for example, an optical member (or light control device) (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, or a quantum dot layer, etc.), a light blocking member (e.g., a light reflecting layer or a light absorbing layer, etc.), or a protective member (e.g., an insulating layer or a dielectric layer, etc.).

[0617] [Electronic equipment]

[0618] The light emitting device may be included in various electronic devices. For example, the electronic device including the light emitting device may be a light emitting device, an authentication device, and the like.

[0619] In addition to the light-emitting device, the electronic device (e.g., the light-emitting device) may further include: a color filter, a color conversion layer, or a color filter and a color conversion layer. The color filter and / or the color conversion layer may be arranged in at least one direction of travel of the light emitted from the light-emitting device. For example, the light emitted from the light-emitting device may be blue light or white light. The light-emitting device may be the same as described herein. In an embodiment, the color conversion layer may include quantum dots. The quantum dots may be, for example, the aforementioned quantum dots.

[0620] The electronic device may include a first substrate. The first substrate may include a plurality of sub-pixels, the color filter may include a plurality of color filter regions respectively corresponding to the plurality of sub-pixels, and the color conversion layer may include a plurality of color conversion regions respectively corresponding to the plurality of sub-pixels.

[0621] A pixel defining layer may be disposed between the plurality of sub-pixels to define each sub-pixel.

[0622] The color filter may further include a plurality of color filter regions and a light shielding pattern disposed 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 disposed between the plurality of color conversion regions.

[0623] The color filter region (or color conversion region) may include: a first region emitting a first color light; a second region emitting a second color light; and / or a third region emitting a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths from each other. In an embodiment, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. In an embodiment, the color filter region (or color conversion region) may include quantum dots. In an embodiment, the first region may include red quantum dots, the second region may include green quantum dots, and the third region may not include quantum dots. The quantum dots may be the same as described herein. The first region, the second region, and / or the third region may each further include a scatterer.

[0624] In an embodiment, 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. The first-first color light, the second-first color light, and the third-first color light may have different maximum emission wavelengths from each other. In an embodiment, 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.

[0625] In addition to the light emitting device described above, the electronic device may further include a thin film transistor. The thin film transistor may include a source electrode, a drain electrode and an active layer, wherein 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.

[0626] The thin film transistor may further include a gate electrode, a gate insulating film, and the like.

[0627] The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, an oxide semiconductor, and the like.

[0628] The electronic device may further include a sealing portion for sealing the light emitting device. The sealing portion may be arranged between the color filter and / or the color conversion layer and the light emitting device. The sealing portion allows light from the light emitting device to be extracted to the outside, and may prevent 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.

[0629] In addition to the color filter and / or the color conversion layer, various functional layers may be further included on the sealing portion according to the purpose of the electronic device. Examples of the functional layer may include a touch screen layer and 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, a pupil, etc.).

[0630] In addition to the light emitting device as described above, the authentication device may further include a biometric information collector.

[0631] The electronic device can be applied to various 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 measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasonic diagnostic devices or endoscope displays), fish finders, various measuring tools, instruments (e.g., instruments for vehicles, aircraft and ships) and projectors, etc.

[0632] [Electronic equipment]

[0633] Light emitting devices may be included in various electronic devices.

[0634] 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 mobile phone, a tablet personal computer, a tablet phone, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, 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, or a sign.

[0635] Since the light emitting device has excellent effects in terms of light emitting efficiency and long device life, electronic equipment including the light emitting device may have characteristics of high brightness, high resolution, and low power consumption.

[0636] [ Figure 2 and Figure 3 Description]

[0637] Figure 2 is a schematic cross-sectional view of an electronic device according to an embodiment.

[0638] Figure 2 The electronic device (eg, a light emitting device) includes a substrate 100, a thin film transistor (TFT), a light emitting device, and a packaging portion 300 that seals the light emitting device.

[0639] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. The buffer layer 210 may be disposed on the substrate 100. The buffer layer 210 may prevent penetration of impurities through the substrate 100 and may provide a flat surface on the substrate 100.

[0640] The TFT may be disposed on the buffer layer 210. The TFT may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0641] 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.

[0642] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 may be disposed on the active layer 220 , and the gate electrode 240 may be disposed on the gate insulating film 230 .

[0643] The interlayer insulating film 250 may be disposed on the gate electrode 240. The interlayer insulating film 250 may be disposed between the gate electrode 240 and the source electrode 260 to insulate the gate electrode 240 from the source electrode 260 and between the gate electrode 240 and the drain electrode 270 to insulate the gate electrode 240 from the drain electrode 270.

[0644] Source electrode 260 and drain electrode 270 may be disposed on interlayer insulating film 250. Interlayer insulating film 250 and gate insulating film 230 may be formed to expose source and drain regions of active layer 220, and source electrode 260 and drain electrode 270 may contact exposed portions of the source and drain regions of active layer 220, respectively.

[0645] The TFT may be electrically connected to the light emitting device to drive the light emitting device, and may be covered and protected by the passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or any combination thereof. The light emitting device may be provided on the passivation layer 280. The light emitting device may include a first electrode 110, an interlayer 130, and a second electrode 150.

[0646] The first electrode 110 may be disposed on the passivation layer 280. The passivation layer 280 may not completely cover the drain electrode 270 and may expose a portion of the drain electrode 270. The first electrode 110 may be electrically connected to the exposed portion of the drain electrode 270.

[0647] The pixel defining layer 290 including an insulating material may be disposed on the first electrode 110. The pixel defining layer 290 may expose a certain area of ​​the first electrode 110, and the interlayer 130 may be formed on the exposed area of ​​the first electrode 110. The pixel defining layer 290 may be a polyimide-based organic film or a polyacrylic organic film. Figure 2 2 , but at least some layers of the interlayer 130 may extend beyond the upper portion of the pixel defining layer 290 and be provided in the form of a common layer.

[0648] The second electrode 150 may be disposed on the interlayer 130, and the capping layer 170 may be further included on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

[0649] The encapsulation part 300 may be disposed on the capping layer 170. The encapsulation part 300 may be disposed on the light emitting device to protect the light emitting device from moisture and / or oxygen. The encapsulation part 300 may include: an inorganic film including silicon nitride (SiN x ), silicon oxide (SiO x), indium tin oxide, indium zinc oxide or any combination thereof; organic films including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyvinyl sulfonate, polyoxymethylene, polyaromatic ester, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate or polyacrylic acid, etc.), epoxy resins (e.g., aliphatic glycidyl ether (AGE), etc.) or any combination thereof; or any combination of inorganic films and organic films.

[0650] Figure 3 A schematic cross-sectional view of an electronic device according to another embodiment is shown.

[0651] Figure 3 An electronic device (eg, a light emitting device) and Figure 2 The electronic device of the present invention may differ in that at least the light shielding pattern 500 and the functional area 400 are further included on the encapsulation portion 300. The functional area 400 may be a color filter area, a color conversion area, or a combination of a color filter area and a color conversion area. In an embodiment, Figure 3 The light-emitting device included in the electronic device may be a series light-emitting device.

[0652] [ Figure 4 Description]

[0653] Figure 4 1 is a schematic perspective view of an electronic device 1 including a light-emitting device according to an embodiment. As a device for displaying moving images or still images, the electronic device 1 can be not only 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 device or an ultra mobile PC (UMPC), but also various products, such as a television, a laptop computer, a monitor, a billboard or an Internet of Things (IOT) device. The electronic device 1 can be any product as described above or a part thereof. The electronic device 1 can be a wearable device, such as a smart watch, a watch phone, a glasses-type display or a head-mounted display (HMD), or a part of a wearable device. However, the embodiment is not limited thereto.

[0654] For example, the electronic device 1 may be 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, a display arranged on a backrest of a front seat, a head-up display (HUD) installed in front of the vehicle or projected on a front windshield, or a computer-generated hologram augmented reality head-up display (CGH AR HUD). For convenience of explanation, Figure 4 An embodiment is explained in which the electronic device 1 is a smart phone.

[0655] The electronic equipment 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 two-dimensional array of pixels arranged in the display area DA.

[0656] The non-display area NDA may be an area where no image is displayed, and may surround (e.g., completely surround) the display area DA. A driver for providing an electrical signal or power to a display device arranged in the display area DA may be arranged in the non-display area NDA. A pad that may be electrically connected to an electronic component or a printed circuit board may be arranged in the non-display area NDA.

[0657] 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 4 As shown in FIG. 1 , the length in the x-axis direction may be shorter than the length in the y-axis direction. In an embodiment, the length in the x-axis direction may be the same as the length in the y-axis direction. In an embodiment, the length in the x-axis direction may be longer than the length in the y-axis direction.

[0658] [ Figure 5 and FIG. 6A to FIG. 6C Description]

[0659] Figure 5 is a schematic perspective view of the exterior of a vehicle 1000 as an electronic device including a light emitting device according to an embodiment. FIG. 6A to FIG. 6C Each is a schematic diagram of the interior of vehicle 1000 according to an embodiment.

[0660] See also Figure 5 , Fig. 6A , Figure 6B and Figure 6C , embodiments of the vehicle 1000 may include various devices for moving an object to be transported (such as a person, object, or animal) from a starting point to a destination point. Examples of the vehicle 1000 may include a vehicle traveling on roads or tracks, a ship moving on the ocean or river, and an airplane flying in the air using the action of air.

[0661] The vehicle 1000 may travel on a road or a track. The vehicle 1000 may move in one direction (e.g., a predetermined or selectable direction) according to the rotation of at least one wheel. Examples of the vehicle 1000 may include a three-wheeled or four-wheeled vehicle, a construction machine, a two-wheeled vehicle, a prime mover device, a bicycle, and a train traveling on a track.

[0662] The vehicle 1000 may include a body having an interior and an exterior, and a chassis other than the body in which mechanical equipment for driving is installed. The exterior of the body may include a front panel, a hood, a roof panel, a rear panel, a trunk, and 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, and front and rear wheels, left and right wheels, etc.

[0663] The vehicle 1000 may include side windows 1100 , a front window 1200 , side mirrors 1300 , an instrument cluster 1400 , a center console 1500 , a passenger seat instrument panel 1600 , and a display device 2 .

[0664] The side window glass 1100 and the front window glass 1200 may be separated by pillars disposed between the side window glass 1100 and the front window glass 1200 .

[0665] The side window glass 1100 may be installed on the side of the vehicle 1000. In an embodiment, the side window glass 1100 may be installed on a door of the vehicle 1000. A plurality of side window glasses 1100 may be provided and may face each other. In an embodiment, the side window glass 1100 may include a first side window glass 1110 and a second side window glass 1120. In an embodiment, the first side window glass 1110 may be arranged adjacent to the instrument cluster 1400, and the second side window glass 1120 may be arranged adjacent to the passenger seat instrument panel 1600.

[0666] In an embodiment, the side window glasses 1100 may be spaced apart from each other in the x-axis direction or the -x-axis direction. For example, the first side window glass 1110 and the second side window glass 1120 may be spaced apart from each other in the x-axis direction or the -x-axis direction. For example, the virtual straight line L connecting the side window glasses 1100 may extend in the x-axis direction or the -x-axis direction. For example, the virtual straight line L connecting the first side window glass 1110 and the second side window glass 1120 may extend in the x-axis direction or the -x-axis direction.

[0667] 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.

[0668] The side view mirror 1300 may provide a rear view of the vehicle 1000. The side view mirror 1300 may be mounted on the outside of the vehicle body. In an embodiment, a plurality of side view mirrors 1300 may be provided. One of the plurality of side view mirrors 1300 may be arranged outside the first side window glass 1110, and another of the plurality of side view mirrors 1300 may be arranged outside the second side window glass 1120.

[0669] 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 engine oil warning light, and / or a low fuel warning light.

[0670] The center console 1500 may include a control panel on which buttons for adjusting an audio device, an air conditioning device, and a seat heater are provided. The center console 1500 may be disposed at one side of the instrument cluster 1400 .

[0671] The passenger seat instrument panel 1600 may be 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 an embodiment, the instrument cluster 1400 may be disposed to correspond to a driver's seat (not shown), and the passenger seat instrument panel 1600 may be disposed to correspond to a passenger seat (not shown). In an embodiment, 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.

[0672] In an embodiment, 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 an embodiment, 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.

[0673] The display device 2 may include an organic light-emitting display device, an inorganic EL display device, a quantum dot display device, etc. Hereinafter, as the display device 2 according to the embodiment, an organic light-emitting display device including a light-emitting device according to the embodiment will be described as an example. However, various types of display devices described herein may be used in the embodiment.

[0674] See also Fig. 6A , the display device 2 may be arranged on the center console 1500. In an embodiment, the display device 2 may display navigation information. In an embodiment, the display device 2 may display information about audio settings, video settings, or vehicle settings.

[0675] See also Figure 6B, 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 digitally implement driving information. The instrument cluster 1400 may digitally display vehicle information and driving information as images. For example, the pointer and instrument of the tachometer and various appropriate warning light icons may be displayed through digital signals.

[0676] See also Figure 6C , the display device 2 may be arranged 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 an embodiment, 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 an embodiment, 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.

[0677] [Manufacturing method]

[0678] The layer constituting the hole transport region, the emission layer and the layer constituting the electron transport region can be formed in a selected region by using various methods such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing and laser induced thermal imaging, etc.

[0679] When the layer constituting the hole transport region, the emission layer, and the layer constituting the electron transport region are formed by vacuum deposition, depending on the materials to be included in the layers to be formed and the structures of the layers to be formed, at a deposition temperature in the range of about 100° C. to about 500° C., the deposition temperature may be about 10° C. to about 500° C., and ... -8 To about 10 -3 Torr range and under vacuum at about / second to about The deposition is carried out at a deposition rate in the range of 200 Å / s.

[0680] [Definition of terms]

[0681] As used herein, the term "C 3 -C 60 The term "carbocyclic group" may be a cyclic group consisting of only carbon atoms as ring-forming atoms and having 3 to 60 carbon atoms, and as used herein, 1 -C 60 The "heterocyclic group" may be a cyclic group having 1 to 60 carbon atoms and may further include at least one heteroatom as a ring-forming atom in addition to carbon. 3 -C 60Carbocyclic and C 1 -C 60 The heterocyclic groups may each be a monocyclic group consisting of one ring or a polycyclic group in which two or more rings are fused to each other. 1 -C 60 The heterocyclic group can have 3 to 61 ring-forming atoms.

[0682] As used herein, the term "cyclic group" may be C 3 -C 60 Carbocyclic or C 1 -C 60 Heterocyclic group.

[0683] As used herein, the term "π-electron-rich C 3 -C 60 The "cyclic group" may be a cyclic group having 3 to 60 carbon atoms and may not include *-N=*' as a ring-forming part. As used herein, the term "π-electron-deficient nitrogen-containing C 1 -C 60 The "cyclic group" may be a heterocyclic group having 1 to 60 carbon atoms and may include *-N=*' as a ring-forming portion.

[0684] In an embodiment,

[0685] C 3 -C 60 The carbocyclic group may be a T1 group, or a group in which two or more T1 groups 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 pentaphenanthrenyl group, a heptalenyl group, a tetracenyl group, a phenanthrenyl group, a hexacenyl group, a pentacenyl group, a rubidenyl group, a coronet group, an ovalenyl group, an indenyl group, a fluorenyl group, a spirobifluorenyl group, a benzofluorenyl group, an indenophenanthrenyl group, or an indenoanthryl group),

[0686] C 1 -C 60The heterocyclic group may be a T2 group, a group in which at least two T2 groups are fused to each other, or a group in which at least one T2 group and at least one T1 group are fused to each other (e.g., a pyrrolyl group, a thienyl group, a furyl group, an indolyl group, a benzindolyl group, a naphthoindolyl group, an isoindolyl group, a benzisoindolyl group, a naphthoisoindolyl group, a benzothioyl group, a benzothiophenyl group, a benzofuranyl group, a carbazolyl group, a dibenzothioyl group, a dibenzothiophenyl group, a dibenzofuranyl group, an indenocarbazolyl group, an indolcarbazolyl group, a benzofuranocarbazolyl group, a benzothiophenylcarbazolyl group, a benzothiophenylcarbazolyl group, a benzothiophenylcarbazolyl group, a benzothiophenylcarbazolyl group, a benzothiophenylcarbazolyl group, a benzoindolcarbazolyl group, a benzocarbazolyl group, a benzonaphthofuranoyl group, a benzonaphthothiophenyl group, a benzonaphthothiophenyl group, a benzonaphthothioyl group, a benzofuranodibenzofuranodibenzothiophenyl group, a ... yl, benzothiophene and dibenzothiophene, pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinoline yl, benzoisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazoline, benzoquinazolinyl, phenanthroline, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazine, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiazolyl, azadibenzothiopheneyl or azadibenzofuranyl, etc.),

[0687] Pi-electron-rich C 3 -C 60 The cyclic group may be a T1 group, a group in which two or more T1 groups are fused to each other, a T3 group, a group in which two or more T3 groups are fused to each other, or a group in which at least one T3 group and at least one T1 group are fused to each other (e.g., C 3 -C 60 carbocyclic group, 1H-pyrrolyl, thiolyl, borocyclopentadienyl, 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 or benzothiophenyldibenzothiophenyl, etc.),

[0688] π-electron-deficient nitrogen-containing C 1 -C 60The cyclic group may be a T4 group, a group in which at least two T4 groups are fused to each other, a group in which at least one T4 group and at least one T1 group are fused to each other, a group in which at least one T4 group and at least one T3 group are fused to each other, or a group in which at least one T4 group, at least one T1 group, and at least one T3 group are fused to each other (e.g., pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, yl, benzoisoxazolyl, 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, azadibenzofuranyl, and the like),

[0689] wherein the T1 group 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,

[0690] The T2 group can be furanyl, thienyl, 1H-pyrrolyl, thiolyl, borocyclopentyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathiarolyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, tetraazinyl, pyrrolidinyl, imidazolidinyl, dihydropyrrolyl, piperidinyl, tetrahydropyridinyl, dihydropyridinyl, hexahydropyrimidinyl, tetrahydropyrimidinyl, dihydropyrimidinyl, piperazinyl, tetrahydropyrazinyl, dihydropyrazinyl, tetrahydropyridazinyl or dihydropyridazinyl,

[0691] The T3 group may be a furyl group, a thienyl group, a 1H-pyrrolyl group, a thiole group or a borocyclopentadienyl group, and

[0692] The T4 group 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.

[0693] As used herein, the terms "cyclic group", "C3 -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 "cyclic group" may each be a group condensed with any cyclic group, a monovalent group or a polyvalent group (e.g., a divalent group, a trivalent group, a tetravalent group, etc.) according to the structure of the formula using the corresponding term. In an embodiment, the "phenyl group" may be a benzo group, a phenyl group or a phenylene group, etc., and those of ordinary skill in the art may easily understand these groups according to the structure of the formula including the "phenyl group".

[0694] Unit Price C 3 -C 60 Carbocyclic or 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, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic fused heteropolycyclic group. 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 -C 60 a heteroarylene group, a divalent non-aromatic fused polycyclic group, and a divalent non-aromatic fused heteropolycyclic group.

[0695] As used herein, the term "C 1 -C 60The “alkyl group” may be a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and examples thereof may include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, n-hexyl, isohexyl, sec-hexyl, tert-hexyl, n-heptyl, isoheptyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodecyl, sec-decyl, and tert-decyl. As used herein, the term “C 1 -C 60 The "alkylene" may be 1 -C 60 The alkyl group has substantially the same structure as a divalent group.

[0696] As used herein, the term "C 2 -C 60 The "alkenyl" may be 2 -C 60 The alkyl group is a monovalent hydrocarbon group having at least one carbon-carbon double bond in the middle or at the end, and examples thereof may include vinyl, propenyl, butenyl, and the like. As used herein, the term “C 2 -C 60 "Alkenylene" can be 2 -C 60 The alkenyl group has a divalent group having substantially the same structure.

[0697] As used herein, the term "C 2 -C 60 "Alkynyl" may be 2 -C 60 The alkyl group is a monovalent hydrocarbon group having at least one carbon-carbon triple bond in the middle or at the end, and examples thereof may include ethynyl and propynyl, etc. As used herein, the term “C 2 -C 60 "Alkyne" can be 2 -C 60 Alkynyl groups have substantially the same structure as a divalent group.

[0698] As used herein, the term "C 1 -C 60 "Alkoxy" may be -O(A 101 )(where A 101 Can be C 1 -C 60 The monovalent group represented by an alkyl group may include a methoxy group, an ethoxy group, an isopropoxy group, and the like.

[0699] As used herein, the term "C 3 -C 10The term "cycloalkyl" may be a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and examples thereof may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]octyl, etc. As used herein, the term "Cycloalkyl" may be a monovalent saturated hydrocarbon ring group having 3 to 10 carbon atoms, and examples thereof may include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2 3 -C 10 The cycloalkylene group may be 3 -C 10 The cycloalkyl group has a divalent group having substantially the same structure.

[0700] As used herein, the term "C 1 -C 10 The term "heterocycloalkyl" as used herein may be a monovalent cyclic group of 1 to 10 carbon atoms further including at least one hetero atom as a ring-forming atom in addition to carbon atoms, and examples thereof may include 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl, tetrahydrothienyl, and the like. 1 -C 10 The heterocycloalkylene group may be 1 -C 10 The heterocycloalkyl group has substantially the same structure as a divalent group.

[0701] As used herein, the term "C 3 -C 10 The term "cycloalkenyl" as used herein may be a monovalent cyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its cyclic structure and having no aromaticity, and examples thereof may include cyclopentenyl, cyclohexenyl, cycloheptenyl, and the like. 3 -C 10 The cycloalkenylene group may be 3 -C 10 The cycloalkenyl group has a divalent group having substantially the same structure.

[0702] As used herein, the term "C 1 -C 10 The "heterocycloalkenyl group" may be 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 may include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, 2,3-dihydrothienyl, and the like. As used herein, the term “C 1 -C 10 The "heterocycloalkenylene" may be 1 -C 10The heterocycloalkenyl group has a divalent group having substantially the same structure.

[0703] As used herein, the term "C 6 -C 60 The term "aryl" may be a monovalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms, and as used herein, the term "C 6 -C 60 The "arylene group" may be a divalent group of a carbocyclic aromatic system having 6 to 60 carbon atoms. 6 -C 60 Examples of aryl groups may include phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenanthrenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, peryl, pentaphenanthrenyl, heptalenyl, tetracenyl, pyrenyl, hexenyl, pentacene, rubenyl, coronenyl, and ovalenyl. 6 -C 60 Aryl and C 6 -C 60 The arylene groups each include two or more rings, and the respective rings may be fused to each other.

[0704] As used herein, the term "C 1 -C 60 The term "heteroaryl" as used herein may be a monovalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms, further including at least one heteroatom as a ring-forming atom in addition to carbon atoms. 1 -C 60 The "heteroarylene group" may be a divalent group of a heterocyclic aromatic system having 1 to 60 carbon atoms, further including at least one heteroatom as a ring-forming atom in addition to carbon atoms. 1 -C 60 Examples of heteroaryl groups may include 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 The heteroarylene groups each include two or more rings, and the respective rings may be fused to each other.

[0705] The term "monovalent non-aromatic fused polycyclic group" as used herein may be a monovalent group having two or more rings fused to each other, only carbon atoms as ring atoms, and no aromaticity in its entire molecular structure (e.g., having 8 to 60 carbon atoms). Examples of monovalent non-aromatic fused polycyclic groups may include indenyl, fluorenyl, spirobifluorenyl, benzofluorenyl, indenophenanthryl, indenoanthryl, and the like. The term "divalent non-aromatic fused polycyclic group" as used herein may be a divalent group having substantially the same structure as the above-mentioned monovalent non-aromatic fused polycyclic group.

[0706] The term “monovalent non-aromatic fused heteropolycyclic group” as used herein may be 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 no aromaticity in its entire molecular structure. Examples of the monovalent non-aromatic condensed heteropolycyclic group may 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 condensed heteropolycyclic group" as used herein may be a divalent group having substantially the same structure as the monovalent non-aromatic condensed heteropolycyclic group described above.

[0707] As used herein, the term "C 6 -C 60 The "aryloxy" may be -O(A 102 )(where A 102 Can be C 6 -C 60 aryl) and as used herein, the term "C 6 -C 60 The "arylthio" group may be -S(A 103 )(where A 103 Can be C 6 -C60 A group represented by an aryl group.

[0708] As used herein, the term "C 7 -C 60 The "aralkyl" may be -(A 104 )(A 105 )(where A 104 Can be C 1 -C 54 Alkylene, and A 105 Can be C 6 -C 59 aryl) and as used herein, the term "C 2 -C 60 The heteroarylalkyl group may be -(A 106 )(A 107 )(where A 106 Can be C 1 -C 59 Alkylene, and A 107 Can be C 1 -C 59 A group represented by a heteroaryl group.

[0709] In the specification, the group "R 10a " can be:

[0710] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone;

[0711] 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 ) or any combination thereof;

[0712] 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 ) or any combination thereof; or

[0713] -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-P(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O) 2 (Q 31 ) or -P(=O)(Q 31 )(Q 32 ).

[0714] In the specification, group 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; or each is unsubstituted or substituted with deuterium, -F, cyano, C 1 -C 60 Alkyl, C 1 -C 60 Alkoxy, phenyl, biphenyl or any combination thereof substituted 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 7 -C 60 Arylalkyl or C 2 -C 60 Heteroaralkyl.

[0715] The term "heteroatom" as used herein may be any atom other than a carbon atom and a hydrogen atom. Examples of heteroatoms may include O, S, N, P, Si, B, Ge, Se, or any combination thereof.

[0716] The term “first row transition metal” as used herein includes titanium (Ti), vanadium (V), cadmium (Cr) and / or manganese (Mn) etc., the term “second row transition metal” as used herein includes yttrium (Y), zirconium (Zr), niobium (Nb) and / or molybdenum (Mo) etc., and the term “third row transition metal” as used herein includes Hf, Ta, W, Re, Os, Ir, Pt and Au etc.

[0717] The term "Ph" as used herein refers to a phenyl group, the term "Me" as used herein refers to a methyl group, the term "Et" as used herein refers to an ethyl group, and the terms "tert-Bu" or "Bu" as used herein refer to an ethyl group. t ” each refers to a tert-butyl group, and the term “OMe” as used herein refers to a methoxy group.

[0718] As used herein, the term "biphenyl" may be a "phenyl group substituted with a phenyl group". For example, a "biphenyl group" may be a group having C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0719] The term "terphenyl" as used herein may be a "phenyl group substituted with a biphenyl group". For example, a "terphenyl group" may be a phenyl group substituted with a C 6 -C 60 Aryl substituted C 6 -C 60 A phenyl group substituted with an aryl group as a substituent.

[0720] Unless otherwise defined, the symbols *, *' and *" as used herein each refer to a binding site to an adjacent atom in the corresponding formula or moiety.

[0721] In the specification, the terms "x-axis", "y-axis", and "z-axis" are not limited to the three axes in an orthogonal coordinate system (e.g., a Cartesian coordinate system), and may be interpreted in a broader sense than the aforementioned three axes in an orthogonal coordinate system. For example, the x-axis, y-axis, and z-axis may describe axes that are orthogonal to each other, or may describe axes in different directions that are not orthogonal to each other.

[0722] Hereinafter, the compound according to the embodiment and the light emitting device according to the embodiment will be described in detail with reference to the following examples. The expression "using B instead of A" used in the description means that B is replaced by A in the same molar equivalent.

[0723] [Example]

[0724] Example 1

[0725] As the anode, Corning 15Ω / cm 2 An ITO glass substrate (manufactured by Corning Incorporated) was cut into a size of 50 mm×50 mm×0.7 mm, ultrasonicated with isopropyl alcohol and pure water for 5 minutes each, and cleaned by exposing to ultraviolet rays and ozone for 30 minutes. The ITO glass substrate was loaded onto a vacuum deposition apparatus.

[0726] NPD was deposited on an ITO anode formed on a glass substrate to form a A hole injection layer having a thickness of , HT3 is deposited on the hole injection layer to form a A hole transport layer having a thickness of , and CzSi is deposited on the hole transport layer to form a The thickness of the emission auxiliary layer is .

[0727] On the emission auxiliary layer, a host (HT-07 and ET04 with a weight ratio of 1:1), a dopant (D-08) and a sensitizer (Compound 11) were co-deposited in a weight ratio of 84:15:1 to form a The thickness of the emission layer.

[0728] TSPO1 is deposited on the emitter layer to form a A hole blocking layer having a thickness of , and compound 30 is deposited on the hole blocking layer to form a An electron transport layer having a thickness of , LiF is deposited on the electron transport layer to form a An electron injection layer having a thickness of , and Al is vacuum deposited on the electron injection layer to form a A LiF / Al electrode (cathode) with a thickness of is formed, thereby preparing a light-emitting device.

[0729] Example 2 and Example 3 and Comparative Example 1

[0730] The light-emitting devices of Examples 2 and 3 and Comparative Example 1 were prepared in substantially the same manner as Example 1, except that D-09, D-10 and Comparative Example Compound 1 were used instead of D-08 as a dopant in Example 1:

[0731]

[0732] [Comparative Example Compound 1]

[0733]

[0734] Evaluation Example 1

[0735] The characteristics of the light emitting devices of Examples 1 to 3 and Comparative Example 1 were evaluated, and the results are shown in Table 1.

[0736] First, the difference (ΔE) between the lowest excited singlet energy level and the lowest excited triplet energy level of the dopant in each device of Examples 1 to 3 was measured using the Gaussian program. ST ). Moreover, through (where k D represents the emission rate constant of the energy molecule, R 0 represents the Förster radius between the sensitizer and the dopant, and R DA The Förster resonance energy transfer (FRET) rate constant (K) between the sensitizer and dopant in each device was calculated. FRET ), and the emission rate constant (K) of the sensitizer is calculated as the inverse of the device lifetime. r t ) to determine whether condition 1 is met. (where κ 2 represents the orientation factor, Φ D 0 represents the PLQY of the energy molecule, n represents the refractive index, N a represents Avogadro's constant, and J represents spectral overlap) to calculate the Förster radius (R 0 ), and the distance between the sensitizer molecule and the dopant molecule (R DA ), assuming that the sensitizer and dopant are spherical molecules at the same concentration as in the experiment, to determine whether condition 2 is satisfied:

[0737] [Condition 1]

[0738] K FRET >K r t ,

[0739] [Condition 2]

[0740] R 0 >R DA .

[0741] For each device, the current was measured at 10 mA / cm by using a source meter (manufactured by Keithley Instrument Company, 2400 series). 2The driving voltage at a current density of , and the maximum luminous efficiency was measured by using an external quantum efficiency measurement device C9920-2-12 from Hamamatsu Photonics Inc. In evaluating the maximum luminous efficiency, the luminance / current density was measured using a luminance meter calibrated for wavelength sensitivity, and the maximum luminous efficiency was converted by assuming that an angular luminance distribution (Lambertian) of an ideal diffuse reflector was introduced. In order to measure the device life, the value obtained by comparing the time taken to reach 95% of the initial luminance in Comparative Example 1 with the time taken to reach 95% of the initial luminance in Examples 1 to 3 was calculated.

[0742] [Table 1]

[0743]

[0744] In Table 1, "O" indicates that the condition is satisfied, and "X" indicates that the condition is not satisfied.

[0745] According to the embodiments, the light emitting device may have high light emitting efficiency and long device lifespan, and thus electronic devices and electronic equipment including the same may have improved performance.

[0746] Embodiments have been disclosed herein, and although terms are employed, they are used and interpreted in a general and descriptive sense only and not for purposes of limitation. In some cases, as will be apparent to one of ordinary skill in the art, features, characteristics, and / or elements described in conjunction with an embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless specifically indicated otherwise. Accordingly, one of ordinary skill in the art will appreciate that various changes in form and detail may be made without departing from the spirit and scope of the present disclosure.

Claims

1. A light emitting device, comprising: a first electrode; a second electrode facing the first electrode; as well as a layer between the first electrode and the second electrode, wherein The interlayer comprises: Emission layer; a first compound that is a hole transport compound; a second compound that is an electron transport compound; a third compound which is an organometallic compound; and As the fourth compound of the boron-containing compound, The difference between the lowest excited singlet energy level and the lowest excited triplet energy level of the fourth compound is less than or equal to 0.4 eV, and The light emitting device satisfies condition 1 and / or condition 2: Condition 1 K FRET >K r t In condition 1, K FRET represents the Forster resonance energy transfer rate constant between the third compound and the fourth compound, and K r t represents the luminescence rate constant of the third compound; Condition 2 R0>R DA In condition 2, R0 represents the Förster radius between the third compound and the fourth compound, and R DA represents the distance between the molecules of the third compound and the molecules of the fourth compound. 2 . The light-emitting device according to claim 1 , wherein the emission layer comprises the first compound, the second compound, the third compound, and the fourth compound. The light-emitting device according to claim 1 , wherein the first compound and the second compound form an exciplex host.

4. The light-emitting device according to claim 1, wherein the light-emitting device further satisfies condition 3: Condition 3 E(T 1 ) H >E(T 1 )3>E(T 1 )4 In condition 3, E(T 1 ) H represents the lowest excited triplet energy level of the exciplex host of the first compound and the second compound, E(T 1 ) 3 represents the lowest excited triplet energy level of the third compound, and E(T 1 )4 represents the lowest excited triplet energy level of the fourth compound. The light-emitting device according to claim 1 , wherein the first compound and the second compound each include a carbazole moiety. 6 . The light-emitting device according to claim 1 , wherein a difference between a HOMO energy level of the first compound and a HOMO energy level of the second compound is greater than or equal to 0.2 eV. 7 . The light-emitting device according to claim 1 , wherein a difference between a LUMO energy level of the first compound and a LUMO energy level of the second compound is greater than or equal to 0.2 eV. The light-emitting device according to claim 1 , wherein the light-emitting device satisfies Condition 1 and Condition 2. 9 . The light-emitting device according to claim 1 , wherein a difference between a lowest excited singlet energy level and a lowest excited triplet energy level of the fourth compound is less than or equal to 0.2 eV.

10. The light-emitting device according to claim 1, wherein the first compound is represented by Formula 1: Formula 1 In formula 1, R1, R2 and Ar1 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted with 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, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(═O)(Q1), -S(═O)2(Q1) or -P(═O)(Q1)(Q2), L1 is 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 C1-C 60 Heterocyclic group, a1 and a2 are each independently an integer selected from 1 to 4, b1 is an integer selected from 0 to 3, R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone; 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 )、-P(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 is: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or Each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 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, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl.

11. The light-emitting device according to claim 1, wherein the second compound is represented by Formula 2: Formula 2 In Formula 2, Ar 11 To Ar 13 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, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(═O)(Q1), -S(═O)2(Q1) or -P(═O)(Q1)(Q2), L 11 To L 13 are each independently 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 C1-C 60 Heterocyclic group, b11 to b13 are each independently an integer selected from 0 to 3, R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone; 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 )、-P(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 is: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or Each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 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, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl.

12. The light-emitting device according to claim 1, wherein the third compound is represented by Formula 3: Formula 3 In formula 3, M is titanium, cobalt, copper, zinc, zirconium, ruthenium, rhodium, palladium, platinum, gold, osmium, iridium or rhenium, Y 11 To Y 14 are each independently N or C, T 11 To T 14 are each independently a single bond, O, S, B(R'), N(R'), P(R'), C(R')(R"), Si(R')(R"), Ge(R')(R") or C(=O), T1 is a single bond, double bond, *-N(R 15 )-*'、*-B(R 15 )-*'、*-P(R 15 )-*'、*-C(R 15a )(R 15b )-*'、*-Si(R 15a )(R 15b )-*'、*-Ge(R 15a )(R 15b )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', *-C(R 15 )=*'、*=C(R 15 )-*'、*-C(R 15a )=C(R 15b )-*', *-C(=S)-*' or *-C≡C-*', T2 is a single bond, double bond, *-N(R 16 )-*'、*-B(R 16 )-*'、*-P(R 16 )-*'、*-C(R 16a )(R 16b )-*'、*-Si(R 16a )(R 16b )-*'、*-Ge(R 16a )(R 16b )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', *-C(R 16 )=*'、*=C(R 16 )-*'、*-C(R 16a )=C(R 16b )-*', *-C(=S)-*' or *-C≡C-*', R 16a and R 16b are optionally linked to each other to form a ring, T3 is a single bond, double bond, *-N(R 17 )-*'、*-B(R 17 )-*'、*-P(R 17 )-*'、*-C(R 17a )(R 17b )-*'、*-Si(R 17a )(R 17b )-*'、*-Ge(R 17a )(R 17b )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', *-C(R 17 )=*'、*=C(R 17 )-*'、*-C(R 17a )=C(R 17b )-*', *-C(=S)-*' or *-C≡C-*', Ring A1 to Ring A4 are each independently 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 C1-C 60 Heterocyclic group, a11 to a14 are each independently an integer selected from 0 to 20, R 11 To R 17 , R 15a , R 15b , R 16a , R 16b , R 17a , R 17b R' and R" are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or substituted 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, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(═O)(Q1), -S(═O)2(Q1) or -P(═O)(Q1)(Q2), R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone; 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 )、-P(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 is: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or Each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 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, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl.

13. The light-emitting device according to claim 1, wherein the fourth compound is represented by Formula 4: Formula 4 In formula 4, Ar 41 To A 44 are each independently 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 C1-C 60 Heterocyclic group, a41 and a42 are each independently an integer selected from 0 to 4, a43 to a45 are each independently an integer selected from 0 to 3, R 41 To R 45 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, -C(Q1)(Q2)(Q3), -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(═O)(Q1), -S(═O)2(Q1) or -P(═O)(Q1)(Q2), R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro, amidino, hydrazine or hydrazone; 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 )、-P(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 is: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, nitro; or Each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 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, C7-C 60 Arylalkyl or C2-C 60 Heteroaralkyl.

14. The light emitting device according to claim 13, wherein R 45 is a group represented by formula 4-1: Formula 4-1 In formula 4-1, T 41 is a single bond, *-N(R 48 )-*', *-B(R 48 )-*', *-P(R 48 )-*', *-C(R 48 )(R 49 )-*', *-Si(R 48 )(R 49 )-*', *-Ge(R 48 )(R 49 )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', *-C(R 48 )=*', *=C(R 48 )-*', *-C(R 48 )=C(R 49 )-*', *-C(=S)-*' or *-C≡C-*', a46 and a47 are each independently an integer selected from 0 to 4, b41 is an integer selected from 0 to 3, R 46 To R 49 Each independently and with reference R 10a Same as described, and *Indicates the binding site to the adjacent carbon atom.

15. The light emitting device according to claim 13, wherein Ar 41 To Ar 44 are each independently unsubstituted or substituted with at least one R 10a Substituted phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenaltenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, phenanthrenyl, hexenyl, pentacenyl, rubenyl, coronenyl or ovalenyl.

16. The light emitting device according to claim 1, wherein the interlayer comprises: two or more transmitting units; and At least one charge generation layer is each between adjacent ones of the two or more emission units.

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

18. The electronic device of claim 17, further comprising a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof.

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

20. The electronic device of claim 19, wherein the electronic device 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 telephone, a mobile 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, or a sign.

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