Composition, light-emitting device, electronic device, and electronic device

Abstract

Embodiments provide a composition including a first compound and a second compound, a light-emitting device including the first compound and the second compound, an electronic device including the light-emitting device, and an electronic apparatus including the light-emitting device. The first compound is represented by Formula 1, and the second compound is represented by Formula 2, which is described in the specification.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Applications No. 10-2024-0110767 and No. 10-2025-0063944, filed with the Korean Intellectual Property Office on August 19, 2024 and May 16, 2025, respectively, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The embodiments relate to compositions, light-emitting devices including compositions, electronic devices including light-emitting devices, and electronic equipment. Background Technology

[0004] The light-emitting device may include a first electrode, a hole transport region, an emitter layer, an electron transport region, and a second electrode, which may be arranged in this order. Holes injected from the first electrode can move toward the emitter layer through the hole transport region. Electrons injected from the second electrode can move toward the emitter layer through the electron transport region. Charge carriers such as holes and electrons can recombine in the emitter layer to generate excitons. When excitons transition from an excited state to a ground state, light can be generated.

[0005] It should be understood that this background section is partly intended to provide useful background for understanding the art. However, this background section may also include ideas, concepts, or knowledge that were known or understood by a person skilled in the art prior to the corresponding valid submission date of the subject matter not disclosed herein. Summary of the Invention

[0006] Examples include: compositions comprising a combination of two different components, light-emitting devices having long lifespan and high efficiency by including said compositions, electronic devices including said light-emitting devices, and electronic equipment.

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

[0008] According to an embodiment, a composition may include a first compound represented by Formula 1 and a second compound represented by Formula 2.

[0009] [Formula 1]

[0010]

[0011] [Equation 2]

[0012]

[0013] In Equations 1 and 2,

[0014] Ar1 to Ar3 can each be independently unsubstituted or substituted by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0015] Ar4 can be a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0016] a1 to a4 can each be an integer from 0 to 2 independently.

[0017] a1+a2+a3+a4 can be 2.

[0018] When a4 is 0, *-(Ar4) a4 -*' can be a single key.

[0019] a1 and Ar1 can be the same or different from each other.

[0020] a2 Ar2 can be the same as or different from each other.

[0021] The three Ar3 atoms can be the same as or different from each other.

[0022] a4 Ar4 atoms can be the same as or different from each other.

[0023] L1 can be a single bond, *-C(R) 18 (R) 19 )-*'、*-N(R 18 )-*'、O or S,

[0024] L2 can be a single bond, *-C(R) 28 (R) 29 )-*'、*-N(R 28 )-*'、O or S,

[0025] L3 can be a single bond, *-C(R) 38 (R) 39 )-*'、*-N(R 38 )-*'、O or S,

[0026] m1 to m3 can each be 0 or 1 independently.

[0027] When m1 is 0, *-(L1) m1 -*' can be a single key.

[0028] When m2 is 0, *-(L2) m2 -*' can be a single key.

[0029] When m3 is 0, *-(L3) m3 -*' can be a single key.

[0030] X 91 It can be N or C(R) 91 ),

[0031] X 92 It can be N or C(R) 92 ),

[0032] X 93 It can be N or C(R) 93 ),

[0033] CY 51 CY 52 CY 71 and CY 72 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0034] Ar 81 To Ar 83 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0035] T 81 To T 83 Each can be independently a single bond, unsubstituted, or affected by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0036] m81 to m83 can each be 0 or 1 independently.

[0037] m81+m82+m83 can be 1.

[0038] When m81 is 0, *-(T 81 ) m81 -*' can be a single key.

[0039] When m82 is 0, *-(T 82 ) m82-*' can be a single key.

[0040] When m83 is 0, *-(T 83 ) m83 -*' can be a single key.

[0041] R1 to R3, R 18 R 19 R 28 R 29 R 38 R 39 R5, R 61 To R 64 R7, R8 and R 91 To R 93 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroalkyl groups, -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),

[0042] n1 and n3 can each be an integer from 0 to 8 independently.

[0043] n2 can be an integer from 0 to 7.

[0044] n5 and n7 can each be an integer from 0 to 20 independently.

[0045] n8 can be an integer from 0 to 4.

[0046] The n1 R1s can be the same or different from each other.

[0047] n² R² units can be the same or different from each other.

[0048] The n3 R3s can be the same as or different from each other.

[0049] The n5 R5s can be the same as or different from each other.

[0050] The n7 R7s can be the same as or different from each other.

[0051] n8 R8s can be the same or different from each other.

[0052] R1 to R3, R 18 R 19 R 28 R 29 R 38 and R 39 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0053] R5, R 61 To R 64 R7, R8 and R 91 To R 93 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0054] R 10a It can be:

[0055] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro;

[0056] C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkyl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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)

[0057] C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroaryl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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

[0058] -Si(Q 31 (Q)32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ),

[0059] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of these can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 alkoxy group; or C3-C 60 Carbocyclic or C1-C 60 Heterocyclic groups, each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 Alkoxy, phenyl, biphenyl, or any combination thereof are substituted, and

[0060] * and *' each indicate the binding site with the adjacent atom.

[0061] In an embodiment, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be less than or equal to about 20°C.

[0062] In the embodiment, in Equation 1, a1 to a3 can each be 0 or 1 independently, and a4 can be 1 or 2.

[0063] In the embodiments, the first compound may be represented by one of Formulas 1-1 to 1-17 described below.

[0064] In the embodiments, in Formula 1, Ar1 to Ar3 can each be independently unsubstituted or substituted by at least one R. 10a Substituted phenyl groups.

[0065] In the embodiments, in Formula 1, Ar4 can be selected from the groups represented by Formula Ar4(a) to Formula Ar4(c) as described below.

[0066] In the embodiments, the first compound may be one of compounds H1 to H63 described below.

[0067] In the embodiment, in Equation 2, X 91 To X 93 At least two of them can each be N.

[0068] In the embodiments, the second compound may be represented by Formula 2-1 as described below.

[0069] In the embodiment, in Equation 2, T 81 To T 83 Each group can be independently selected from the groups represented by formulas T8(a) to T8(c) described below.

[0070] In the embodiment, in Equation 2, Ar 81 To Ar 83 Each can be independently unsubstituted or by at least one R 10a Substituted phenyl groups.

[0071] In the embodiments, the second compound may be one of compounds E1 to E33 described below.

[0072] In the embodiments, the first compound may have a highest occupied molecular orbital energy level (E) greater than or equal to approximately -5.6 eV. HOMO Furthermore, the second compound can have a lowest unoccupied molecular orbital energy level (E0) less than or equal to approximately -2.6 eV. LUMO ).

[0073] In the embodiments, the first compound and the second compound may each have a triplet energy level greater than or equal to approximately 2.8 eV (Et). T1 ).

[0074] According to an embodiment, a light-emitting device may include: a first electrode; a second electrode facing the first electrode; and an intermediate layer between the first electrode and the second electrode and including an emitting layer, wherein the emitting layer may include a first compound represented by Formula 1 and a second compound represented by Formula 2 as described herein.

[0075] In one embodiment, the emitting layer can emit blue light.

[0076] According to an embodiment, a light-emitting device may include:

[0077] First electrode;

[0078] The second electrode faces the first electrode;

[0079] m emission units are stacked between the first and second electrodes; and

[0080] There are m-1 charge generation layers, each located between two adjacent emitter units among the m emitter units, where...

[0081] m can be an integer of 2 or greater.

[0082] Each of the m transmitting units independently includes an intermediate layer, and the intermediate layer includes the transmitting layer.

[0083] The emission layer of at least one of the m emission units may include a first compound represented by Formula 1 and a second compound represented by Formula 2 as described herein:

[0084] According to an embodiment, an electronic device may include a light-emitting device.

[0085] In an embodiment, the electronic device may further include a thin-film transistor, wherein the thin-film transistor may include a source electrode and a drain electrode, and a first electrode of the light-emitting device may be electrically connected to at least one of the source electrode and the drain electrode.

[0086] According to an embodiment, an electronic device may include a light-emitting device.

[0087] In embodiments, the electronic equipment may be a flat panel display, a curved display, a computer monitor, a medical monitor, a television set, an advertising board, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display (such as a rollable display, a foldable display, or a stretchable display), a laser printer, a telephone (such as a mobile phone or tablet phone), a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, 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 spliced ​​together, a theater screen, a stadium screen, a light therapy device, or a bulletin board.

[0088] It should be understood that the above embodiments are described in a general and illustrative sense only and are not for the purpose of limitation, and this disclosure is not limited to the embodiments described above. Attached Figure Description

[0089] The accompanying drawings are included to provide a further understanding of the embodiments, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present disclosure and the principles of those embodiments. The above and other aspects and features of the present disclosure will become more apparent from the detailed description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0090] Figure 1 This is a schematic cross-sectional view of the light-emitting device according to an embodiment;

[0091] Figure 2 This is a schematic cross-sectional view of an electronic device according to an embodiment;

[0092] Figure 3 This is a schematic cross-sectional view of an electronic device according to another embodiment;

[0093] Figure 4 This is a schematic perspective view of an electronic device including a light-emitting device according to an embodiment;

[0094] Figure 5 This is a schematic perspective view of the exterior of a vehicle, which is an electronic device including a light-emitting device, according to an embodiment; and

[0095] Figures 6A to 6C Each is a schematic diagram of the interior of a vehicle according to an embodiment. Detailed Implementation

[0096] This disclosure will now be described more fully below with reference to the accompanying drawings, in which embodiments are illustrated. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0097] In the accompanying drawings, for ease of description and clarity, the size, thickness, scale, and dimensions of elements may be exaggerated. The same reference numerals and / or the same reference characters always refer to the same elements.

[0098] In this description, it will be understood that when an element (or region, layer, component, etc.) is referred to as being "on," "connected to," or "coupled to" another element, the element may be directly on, connected to, or coupled to the other element, or one or more intermediary elements may exist between the element and the other element. In a similar sense, when an element (or region, layer, component, etc.) is described as "covering" another element, the element may directly cover the other element, or one or more intermediary elements may exist between the element and the other element.

[0099] In the description, when an element is "directly on" another element, "directly connected to" another element, or "directly coupled to" another element, there are no intermediate elements. For example, "directly on" can mean that two layers or two elements are configured such that there are no additional elements such as adhesive elements between the two layers and the two elements.

[0100] Unless the context clearly indicates otherwise, expressions used herein in the singular forms such as “a,” “one,” and “the” are intended to include the plural forms as well.

[0101] As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items. For example, “A and / or B” can be understood to mean “A, B, or A and B”. The terms “and” and “or” can be used in the sense of conjunction or disjunction and can be understood as equivalent to “and / or”.

[0102] In the specification and claims, for the purposes of their meaning and description, the term "at least one of..." is intended to include the meaning of "at least one of the group consisting of...". For example, "at least one of A, B, and C" can 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, AB, BC, or AC). When the term "at least one of..." precedes / follows the list of elements, it modifies the entire list of elements and does not modify any individual element in the list.

[0103] It will be understood that although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. Therefore, without departing from the teachings of this disclosure, a first element may be referred to as a second element. Similarly, without departing from the scope of this disclosure, a second element may be referred to as a first element.

[0104] For ease of description, the spatial relative terms “below,” “under,” “down,” “above,” or “above,” etc., may be used herein to describe the relationship between one element or component and another, as shown in the accompanying drawings. It will be understood that, in addition to the orientations depicted in the drawings, the spatial relative terms are intended to cover different orientations of the device in use or operation. For example, in the case where the device shown in the drawings is flipped, a device positioned “below” or “under” another device may be placed “above” another device. Therefore, the illustrative term “below” can include both a lower and an upper position. The device may also be oriented in other directions, and therefore the spatial relative terms may be interpreted differently depending on the orientation.

[0105] Taking into account the measurements discussed and the errors associated with the measurement of the recorded quantities (e.g., limitations of the measurement system), as used herein, “about” or “approximately” includes the stated values ​​and means within an acceptable range of deviation from the recorded values ​​as determined by one of ordinary skill in the art. For example, “about” may mean within one or more standard deviations, or within ±20%, ±10%, or ±5% of the stated values.

[0106] It should be understood that the terms “comprises,” “includes,” “have,” and “contain” are intended to indicate the presence of the stated features, integers, steps, operations, elements, components, or combinations thereof in this disclosure, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0107] Unless otherwise defined or implied herein, all terms used (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will be further understood that, unless expressly defined in the specification, terms (such as those defined in a general dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant field and should not be interpreted in an ideal or overly formal sense.

[0108] According to embodiments, the composition may include a first compound represented by Formula 1 and a second compound represented by Formula 2:

[0109] [Formula 1]

[0110]

[0111] [Equation 2]

[0112]

[0113] In Equations 1 and 2,

[0114] Ar1 to Ar3 can each be independently unsubstituted or substituted by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0115] Ar4 can be a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0116] a1 to a4 can each be an integer from 0 to 2 independently.

[0117] a1+a2+a3+a4 can be 2.

[0118] When a4 is 0, *-(Ar4)a4 -*' can be a single key.

[0119] a1 Ar1s can be the same or different from each other, a2 Ar2s can be the same or different from each other, a3 Ar3s can be the same or different from each other, and a4 Ar4s can be the same or different from each other.

[0120] L1 can be a single bond, *-C(R) 18 (R) 19 )-*'、*-N(R 18 )-*'、O or S,

[0121] L2 can be a single bond, *-C(R) 28 (R) 29 )-*'、*-N(R 28 )-*'、O or S,

[0122] L3 can be a single bond, *-C(R) 38 (R) 39 )-*'、*-N(R 38 )-*'、O or S,

[0123] m1 to m3 can each be 0 or 1 independently.

[0124] When m1 is 0, *-(L1) m1 -*' can be a single key.

[0125] When m2 is 0, *-(L2) m2 -*' can be a single key.

[0126] When m3 is 0, *-(L3) m3 -*' can be a single key.

[0127] X 91 It can be N or C(R) 91 ), X 92 It can be N or C(R) 92 ), and X 93 It can be N or C(R) 93 ),

[0128] CY 51 CY 52 CY 71 and CY 72 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0129] Ar 81 To Ar 83 Each can be independently unsubstituted or by at least one R10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0130] T 81 To T 83 Each can be independently a single bond, unsubstituted, or affected by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0131] m81 to m83 can each be 0 or 1 independently.

[0132] m81+m82+m83 can be 1.

[0133] When m81 is 0, *-(T 81 ) m81 -*' can be a single key.

[0134] When m82 is 0, *-(T 82 ) m82 -*' can be a single key.

[0135] When m83 is 0, *-(T 83 ) m83 -*' can be a single key.

[0136] R1 to R3, R 18 R 19 R 28 R 29 R 38 R 39 R5, R 61 To R 64 R7, R8 and R 91 To R 93 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10aReplacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroalkyl groups, -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),

[0137] n1 and n3 can each be an integer from 0 to 8 independently.

[0138] n2 can be an integer from 0 to 7.

[0139] n5 and n7 can each be an integer from 0 to 20 independently.

[0140] n8 can be an integer from 0 to 4.

[0141] n1 R1s can be the same or different from each other, n2 R2s can be the same or different from each other, n3 R3s can be the same or different from each other, n5 R5s can be the same or different from each other, n7 R7s can be the same or different from each other, and n8 R8s can be the same or different from each other.

[0142] R1 to R3, R 18 R 19 R 28 R 29 R 38 and R 39 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0143] R5, R 61 To R 64 R7, R8 and R 91 To R 93Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0144] R 10a It can be:

[0145] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro;

[0146] C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkyl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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)

[0147] C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroaryl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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

[0148] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ),

[0149] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of these can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 alkoxy group; or C3-C 60 Carbocyclic or C1-C 60 Heterocyclic groups, each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 Alkoxy, phenyl, biphenyl, or any combination thereof are substituted, and

[0150] * and *' each indicate the binding site with the adjacent atom.

[0151] For example, the composition may include a mixture of a first compound and a second compound. The first compound and the second compound can be mixed before fabricating the light-emitting device by deposition of the first compound and the second compound. Therefore, the composition may be referred to as a premix.

[0152] In embodiments, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be less than or equal to about 20°C. In embodiments, during the deposition process, the two compounds may be dispensed from a single deposition source. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 0°C to about 20°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 0°C to about 15°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 0°C to about 10°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 0°C to about 5°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 0°C to about 4°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 0°C to about 3.5°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound may be in the range of about 1°C to about 4°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound can be in the range of about 1.5°C to about 3.5°C. For example, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound can be in the range of about 2°C to about 3.5°C. The deposition temperatures of the first and second compounds can be measured under the same conditions (e.g., vacuum level and substrate type).

[0153] In the embodiments, the first compound may be represented by one of formulas 1A to 1D:

[0154] [Formula 1A]

[0155]

[0156] [Formula 1B]

[0157]

[0158] [Formula 1C]

[0159]

[0160] [Formula 1D]

[0161]

[0162] In the embodiment, in Equation 1, a1 to a3 can each be 0 or 1 independently, and a4 can be 1 or 2. For example, (a1, a2, a3, a4) can be (1, 0, 0, 1), (0, 1, 0, 1), (0, 0, 1, 1), or (0, 0, 0, 2).

[0163] In the embodiments, the first compound may be represented by one of formulas 1-1 to 1-17:

[0164]

[0165]

[0166]

[0167] In equations 1-1 to 1-17,

[0168] R 10 To R 17 Each can be independently identical to the one described (defined) with respect to R1 in Equation 1.

[0169] R 30 To R 37 Each can be independently identical to the description of R3 in Equation 1.

[0170] Z 1a To Z 1e Z 2a To Z 2e Z 3a To Z 3e Z 41 and Z 42 Each can be independently related to R in Equation 1 10a The same as described.

[0171] b41 can be an integer from 0 to 4.

[0172] b42 can be an integer from 0 to 4, and

[0173] L1 to L3, m1 to m3, R2 and n2 can each be the same as those described in Equation 1.

[0174] In the embodiments, in Formula 1, Ar1 to Ar3 can each be independently unsubstituted or substituted by at least one R. 10a Replacement C6-C 60 aryl, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heteroaryl groups. For example, in embodiments, Ar1 to Ar3 may each be independently unsubstituted or substituted with at least one R. 10aSubstituted phenyl groups.

[0175] In the embodiments, in Equation 1, Ar1 to Ar3 can each be independently:

[0176] Each of the following groups, whether unsubstituted or deuterated, consists of phenyl, pentanenyl, naphthyl, chamomilecycloyl, indarabinyl, acenaphthenic, phenanthrene, anthracene, fluoranthracene, benzo[a]phenanthrene, pyrene, etc. Peryl, peryl, pentylene, hepta-enyl, tetraphenyl, peryl, hexaphenyl, pentaphenyl, rutinyl, benzoyl, and ovoxyl; and

[0177] The unsubstituted or deuterated pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, benzoquinolinyl, isoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cenolinyl, phenanthrolinel, phthalazinyl, and naphthidyl.

[0178] In the embodiments, in Formula 1, Ar4 can be unsubstituted or substituted with at least one R. 10a Replacement C6-C 60 aryl, or unsubstituted or substituted with at least one R 10a Replacement C1-C 60 Heteroaryl groups. For example, in the embodiments, Ar4 can be selected from groups represented by formula Ar4(a) to Ar4(c):

[0179]

[0180] In equations Ar4(a) to Ar4(c),

[0181] Z 41 It can be related to R in Equation 1 10a The same as described.

[0182] b41 can be an integer from 0 to 4, and

[0183] * and *' each indicate the binding site with the adjacent atom.

[0184] In the embodiments, in Equation 1, m1 to m3 can each be 0, and L1 to L3 can each be a single bond. For example, in Equation 1, *-(L1) m1 -*'、*-(L2) m2 -*' and *-(L3) m3 -*' can each be a single key.

[0185] In the embodiments, the first compound may be one of compounds H1 to H63:

[0186]

[0187]

[0188]

[0189]

[0190]

[0191]

[0192]

[0193] In the embodiment, in Equation 2, X 91 To X 93 At least two of them can each be N. For example, X 91 To X 93 Each can be N.

[0194] In the embodiments, the second compound may be represented by formulas 2A to 2C:

[0195] [Equation 2A]

[0196]

[0197] [Formula 2B]

[0198]

[0199] [Equation 2C]

[0200]

[0201] In equations 2A to 2C,

[0202] R 81 To R 85 Each can be independently identical to the description of R8 in Equation 2, and

[0203] X 91 To X 93 CY 51 CY 52 CY 71 CY 72 Ar 81 To Ar 83 T 81 To T 83 m81 to m83, R5, R 61 To R 64 R7, n5, and n7 can each be the same as those described in Equation 2.

[0204] In the embodiment, in Equation 2, CY51 CY 52 CY 71 and CY 72 Each can be independently phenyl, naphthyl, phenanthryl, fluoranyl, terphenyl, pyrene, Indole, fluorenyl, spirodifluorenyl, benzo[fluorenyl], dibenzo[fluorenyl], indolyl, pyridyl, pyrimidinyl, carbazoleyl, benzo[carbazoleyl], dibenzo[carbazoleyl], furanyl, benzo[furanyl], dibenzo[furanyl], naphtho[furanyl], benzo[naphtho[furanyl], dinaphtho[furanyl], thiophenyl, benzo[thiophenyl], dibenzo[thiophenyl], naphtho[thiophenyl], benzo[naphtho[thiophenyl] or dinaphtho[thiophenyl].

[0205] In the embodiments, the second compound can be represented by formula 2-1:

[0206] [Equation 2-1]

[0207]

[0208] In Equation 2-1,

[0209] R 51 To R 58 Each can be independently identical to the description of R5 in Equation 2.

[0210] R 71 To R 78 Each can be independently identical to the description of R7 in Equation 2, and

[0211] X 91 To X 93 Ar 81 To Ar 83 T 81 To T 83 m81 to m83, R 61 To R 64 R8 and n8 can each be the same as those described in Equation 2.

[0212] In the embodiment, in Equation 2, (m81, m82, m83) can be (0, 0, 1), (0, 1, 0), or (1, 0, 0).

[0213] In the embodiment, in Equation 2, T 81 To T 83 Each group can be independently selected from those represented by formulas T8(a) to T8(c):

[0214]

[0215] In equations T8(a) to T8(c),

[0216] Z8 can be related to R in Equation 1 10a The same as described.

[0217] b8 can be an integer from 0 to 4, and

[0218] * and *' each indicate the binding site with the adjacent atom.

[0219] In the embodiment, in Equation 2, Ar 81 To Ar 83 Each can be independently unsubstituted or by at least one R 10a Replacement C6-C 60 aryl, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heteroaryl groups. For example, in the embodiments, Ar... 81 To Ar 83 Each can be independently unsubstituted or by at least one R 10a Substituted phenyl groups.

[0220] In the embodiments, the second compound may be one of compounds E1 to E33:

[0221]

[0222]

[0223]

[0224]

[0225] In the embodiments, the first compound may have a highest occupied molecular orbital (HOMO) energy level greater than or equal to approximately -5.6 eV (E). HOMO ).

[0226] In the embodiments, the second compound may have a lowest unoccupied molecular orbital (LUMO) energy level (E) less than or equal to approximately -2.6 eV. LUMO ).

[0227] In the embodiments, each of the first and second compounds may have a triplet energy level greater than or equal to approximately 2.8 eV (Et). T1 ).

[0228] Examples of the first compound and their corresponding HOMO and triplet energy levels are shown in Table 1, and examples of the second compound and their corresponding LUMO and triplet energy levels are shown in Table 2:

[0229] [Table 1]

[0230]

[0231]

[0232] [Table 2]

[0233] Second compound LUMO(eV) T1(eV) Compound E1 -2.77 2.88 Compound E2 -2.78 2.88 Compound E4 -2.78 2.87 Compound E8 -2.84 2.80 Compound E13 -2.80 2.90

[0234] In an embodiment, the first compound may include at least one deuterium.

[0235] In an embodiment, the second compound may include at least one deuterium.

[0236] The first compound may have a structure of Formula 1 including phenyl (Ar1 to Ar4) such that a1+a2+a3+a4 is 2, and the second compound may have a structure including phenyl (T) 81 To T 83 The structure of Formula 2 is such that m81+m82+m83 is 1, and therefore, the difference between the deposition temperature of the first compound and the deposition temperature of the second compound can be less than or equal to about 20°C. Therefore, when a composition in which the first compound and the second compound are premixed is used in the deposition process of a light-emitting device, the ratio of the first compound and the second compound in the deposition layer can be uniformly maintained.

[0237] Using a composition in which the first and second compounds are premixed in the deposition process of a light-emitting device makes it possible to reduce the cost and time required to manufacture the light-emitting device.

[0238] The first compound can have hole transport properties by having the structure of Formula 1, and the second compound can have electron transport properties by having the structure of Formula 2.

[0239] By using a combination of a first compound with hole transport properties and a second compound with electron transport properties as the main body, the light-emitting device can have improved efficiency and / or lifetime characteristics.

[0240] According to an embodiment, the light-emitting device may include a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode, including an emitting layer, wherein the intermediate layer may include a first compound and a second compound.

[0241] In an embodiment, the intermediate layer may include the composition described above. For example, the intermediate layer may include a layer formed by depositing the composition described above.

[0242] In embodiments, the emission layer may include a first compound and a second compound. For example, the emission layer may include the composition described above. For example, the emission layer may include a layer formed by deposition of the composition described above.

[0243] In one embodiment, the emitting layer can emit blue light.

[0244] In embodiments, the emitting layer may include a host and a dopant, and the host may include a first compound and a second compound. The first compound and the second compound may form an excimer complex. In embodiments, the dopant may include a fluorescent dopant, a phosphorescent dopant, a delayed fluorescence dopant, or any combination thereof. For example, the dopant may include a phosphorescent dopant.

[0245] In an embodiment, the light-emitting device may further include a capping layer outside the first electrode or outside the second electrode.

[0246] For example, 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 a first compound and a second compound. The first capping layer and / or the second capping layer may be the same as those described herein.

[0247] In an embodiment, the light-emitting device may further include a first capping layer outside the first electrode. For example, the first capping layer may include a first compound and a second compound.

[0248] In some embodiments, the light-emitting device may further include a second capping layer disposed outside the second electrode. For example, the second capping layer may include a first compound and a second compound.

[0249] In an embodiment, the light-emitting device may further include a first capping layer outside the first electrode and a second capping layer outside the second electrode. For example, at least one of the first capping layer and the second capping layer may include a first compound and a second compound.

[0250] In the specification, the statement "(intermediate layer and / or capping layer) includes a first compound" can be interpreted as meaning that (intermediate layer and / or capping layer) may include a first compound represented by Formula 1 or two or more different first compounds, each independently represented by Formula 1.

[0251] In the specification, the statement "(intermediate layer and / or capping layer) includes a second compound" can be interpreted as meaning that (intermediate layer and / or capping layer) may include one second compound represented by Formula 2 or two or more different second compounds, each independently represented by Formula 2.

[0252] In one embodiment, the intermediate layer and / or capping layer may each comprise only compound H1 as the first compound. For example, compound H1 may be included in the emitting layer of the light-emitting device. In another embodiment, the intermediate layer may include both compound H1 and compound H2 as the first compounds. For example, compound H1 and compound H2 may be included in the same layer (e.g., both compound H1 and compound H2 may be included in the emitting layer), or they may each be included in different layers (e.g., compound H1 may be included in the emitting layer and compound H2 may be included in the electron transport region).

[0253] In one embodiment, the intermediate layer and / or capping layer may each comprise only compound E1 as a second compound. For example, compound E1 may be included in the emitting layer of the light-emitting device. In another embodiment, the intermediate layer may include both compound E1 and compound E2 as second compounds. For example, compound E1 and compound E2 may be included in the same layer (e.g., both compound E1 and compound E2 may be included in the emitting layer), or they may each be included in different layers (e.g., compound E1 may be included in the emitting layer, and compound E2 may be included in the electron transport region).

[0254] In the specification, the term "intermediate layer" can refer to a single layer and / or multiple layers between the first electrode and the second electrode of the light-emitting device.

[0255] According to an embodiment, the light-emitting device may include: a first electrode; a second electrode facing the first electrode; m emission units stacked between the first electrode and the second electrode; and m-1 charge-generating layers, each between two adjacent emission units among the m emission units, wherein m can be an integer of 2 or greater, each of the m emission units may independently include an intermediate layer containing the emission layer, and the intermediate layer of at least one of the m emission units may include a first compound and a second compound.

[0256] In an embodiment, the emission layer of at least one of the m emission units may include a first compound and a second compound. For example, the emission layer of at least one of the m emission units may include the above-described composition. For example, the emission layer of at least one of the m emission units may include a layer formed by deposition of the above-described composition.

[0257] According to embodiments, the electronic device may include a light-emitting device. In embodiments, the electronic device may also include a thin-film transistor. For example, the electronic device may further include a thin-film transistor comprising a source electrode and a drain electrode, wherein a first electrode of the light-emitting device may be electrically connected to the source electrode or the drain electrode. In embodiments, the electronic device may also include a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof. The electronic device may be the same as described herein.

[0258] According to embodiments, the electronic equipment can be a light-emitting device. The electronic equipment can be a flat panel display, a curved display, a computer monitor, a medical monitor, a television set, an advertising board, an indoor light, an outdoor light, a signal light, a head-up display, a fully transparent display, a partially transparent display, a flexible display (such as a rollable display, a foldable display, or a stretchable display), a laser printer, a telephone (such as a mobile phone or tablet phone), a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, 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 spliced ​​together, a theater screen, a stadium screen, a light therapy device, or a bulletin board.

[0259] [ Figure 1 [Description]

[0260] Figure 1 This is a schematic cross-sectional view of the light-emitting device 10 according to an embodiment. The light-emitting device 10 includes a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0261] In the following text, see references Figure 1 The structure of the light-emitting device 10 according to the embodiment and the method of manufacturing the light-emitting device 10 are described.

[0262] [First Electrode 110]

[0263] exist Figure 1 The substrate may be further included below the first electrode 110 or on the second electrode 150. In embodiments, the substrate may be a glass substrate or a plastic substrate. In embodiments, the substrate may be a flexible substrate and may include plastics with excellent heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0264] The first electrode 110 can be formed, for example, by depositing or sputtering a material for forming the first electrode 110 onto a substrate. When the first electrode 110 is an anode, the material for forming the first electrode 110 can be a high work function material that facilitates hole injection.

[0265] The first electrode 110 can be a reflective electrode, a semi-transmissive / semi-reflective electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 can include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof. In embodiments, when the first electrode 110 is a semi-transmissive / semi-reflective electrode or a reflective electrode, the material used to form the first electrode 110 can 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.

[0266] The first electrode 110 may have a structure consisting of a single layer or a structure comprising multiple layers. In an embodiment, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0267] [Middle Layer 130]

[0268] Intermediate layer 130 may be disposed on first electrode 110. Intermediate layer 130 may include emitter layer.

[0269] The intermediate layer 130 may also include a hole transport region between the first electrode 110 and the emitter layer and an electron transport region between the emitter layer and the second electrode 150.

[0270] In addition to various organic materials, the intermediate layer 130 may also include metal-containing compounds such as organometallic compounds, or inorganic materials such as quantum dots.

[0271] In an embodiment, the intermediate layer 130 may include two or more emitting units stacked between the first electrode 110 and the second electrode 150, and at least one charge generating layer between adjacent emitting units in the two or more emitting units. When the intermediate layer 130 includes two or more emitting units and at least one charge generating layer as described above, the light-emitting device 10 may be a tandem light-emitting device.

[0272] [Hole transport region in intermediate layer 130]

[0273] Hole transport regions can have a structure consisting of a single layer made of a single material, a structure consisting of a single layer comprising different materials, or a structure comprising multiple layers containing different materials.

[0274] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

[0275] In an embodiment, the hole transport region may have a multi-layer structure, such as a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission auxiliary layer structure, a hole injection layer / emission auxiliary layer structure, a hole transport layer / emission auxiliary layer structure, or a hole injection layer / hole transport layer / electron blocking layer structure, wherein the layers of each structure may be stacked from the first electrode 110 in the order stated therein, but the structure of the hole transport region is not limited thereto.

[0276] In an embodiment, the hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0277] [Formula 201]

[0278]

[0279] [Formula 202]

[0280]

[0281] In equations 201 and 202,

[0282] L 201 To L 204 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0283] L 205 It can be *-O-*', *-S-*', or *-N(Q) 201 )-*', unsubstituted or by at least one R 10a Replacement C1-C 20 Alkylene, unsubstituted, or with at least one R 10a Replacement C2-C 20 alkenyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0284] xa1 to xa4 can each be an integer from 0 to 5 independently.

[0285] xa5 can be an integer from 1 to 10.

[0286] R 201 To R 204 and Q 201Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0287] R 201 and R 202 It can be optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups, or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form an unsubstituted or substituted compound with at least one R group. 10a Replacement C8-C 60 Polycyclic groups (e.g., carbazole groups) (e.g., compound HT16),

[0288] R 203 and R 204 It can be optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups, or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form an unsubstituted or substituted compound with at least one R group. 10a Replacement C8-C 60 Polycyclic groups, and

[0289] na1 can be an integer from 1 to 4.

[0290] In the embodiments, 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 CY217:

[0291]

[0292] In equations CY201 to CY217, R 10b and R 10c They can be independently related to R. 10a The descriptions are the same, CY ring 201 To CY 204 Each can be independently C3-C 20 Carbocyclic or C1-C 20 Heterocyclic group, and at least one hydrogen in formulas CY201 to CY217 may be unsubstituted or be R as described herein. 10a replace.

[0293] In the embodiments, in formulas CY201 to CY217, the ring CY 201 To CY204 Each can be phenyl, naphthyl, phenanthryl or anthracene, and each can be independent of the other.

[0294] In the embodiments, 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.

[0295] In the embodiments, 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.

[0296] In the embodiment, in equation 201, xa1 can be 1, R 201 It can be a group represented by one of the formulas CY201 to CY203, xa2 can be 0, and R 202 It can be a group represented by one of the formulas CY204 to CY207.

[0297] In the embodiments, the compounds represented by formula 201 and the compounds represented by formula 202 may each not include the groups represented by formulas CY201 to CY203.

[0298] In the embodiments, the compound represented by formula 201 and the compound represented by formula 202 may each not include the groups represented by formulas CY201 to CY203, and may each independently include at least one of the groups represented by formulas CY204 to CY217.

[0299] In the embodiments, the compounds represented by formula 201 and the compounds represented by formula 202 may each not include the groups represented by formulas CY201 to CY217.

[0300] In embodiments, 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" tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (Pani / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), or any combination thereof:

[0301]

[0302]

[0303]

[0304]

[0305]

[0306] The thickness of the hole transport region can be approximately up to approximately Within a certain range. For example, the thickness of the hole transport region can be approximately... up to approximately Within the range. When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer can be approximately... up to approximately Within a certain range, and the thickness of the hole transport layer can be approximately... up to approximately Within a certain range. For example, the thickness of the hole injection layer can be approximately... up to approximately Within a certain range. For example, the thickness of the hole transport layer can be approximately... up to approximately Within the above range, when the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within the above range, satisfactory hole transport characteristics can be obtained without significantly increasing the driving voltage.

[0307] The emission assist layer can improve light emission efficiency by compensating for the optical resonant distance according to the wavelength of the light emitted by the emission layer, and the electron blocking layer can prevent electrons from leaking from the emission layer into the hole transport region. Materials that can be included in the hole transport region can be included in both the emission assist layer and the electron blocking layer.

[0308] [p-dopant]

[0309] In addition to these materials, the hole transport region may also include charge-generating materials to improve conductivity. The charge-generating materials may be (e.g., in the form of a monolayer composed of charge-generating materials) uniformly or non-uniformly dispersed in the hole transport region.

[0310] The charge-generating material can be, for example, a p-doped agent.

[0311] In the embodiments, the lowest unoccupied molecular orbital (LUMO) level of the p-doped agent may be less than or equal to approximately -3.5 eV.

[0312] In the embodiments, the p-dopant may include quinone derivatives, cyano-containing compounds, compounds containing elements EL1 and EL2, or any combination thereof.

[0313] Examples of quinone derivatives can include TCNQ and F4-TCNQ:

[0314]

[0315] Examples of cyano-containing compounds may include HAT-CN and compounds represented by formula 221:

[0316]

[0317] [Equation 221]

[0318]

[0319] In Equation 221,

[0320] R 221 To R 223 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, and

[0321] R 221 To R 223 At least one of them can be independently: C3-C 60 Carbocyclic or C1-C 60 Heterocyclic groups, each substituted with one of the following groups: cyano; -F; -Cl; -Br; -I; C1-C substituted with cyano, -F, -Cl, -Br, -I or any combination thereof. 20 Alkyl groups; or any combination thereof.

[0322] In a compound comprising elements EL1 and EL2, element EL1 may be a metal, a metalloid, or any combination thereof, and element EL2 may be a nonmetal, a metalloid, or any combination thereof.

[0323] Examples of metals may include: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt. (Co, Rhodium (Rh), Iridium (Ir), Nickel (Ni), Palladium (Pd), Platinum (Pt), Copper (Cu), Silver (Ag), Gold (Au), etc.); Post-transition metals (e.g., Zinc (Zn), Indium (In), Tin (Sn), etc.); and Lanthanides (e.g., Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), etc.).

[0324] Examples of metalloids can include silicon (Si), antimony (Sb), and tellurium (Te).

[0325] Examples of nonmetals can include oxygen (O) and halogens (e.g., F, Cl, Br, I, etc.).

[0326] Examples of compounds including elements EL1 and EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, metal iodides, etc.), quasi-metal halides (e.g., quasi-metal fluorides, quasi-metal chlorides, quasi-metal bromides, quasi-metal iodides, etc.), metal tellurides, or any combination thereof.

[0327] Examples of metal oxides may include tungsten oxide (e.g., WO, W2O3, WO2, WO3, W2O5, etc.), vanadium oxide (e.g., VO, V2O3, VO2, V2O5, etc.), molybdenum oxide (MoO, Mo2O3, MoO2, MoO3, Mo2O5, etc.) and rhenium oxide (e.g., ReO3, etc.).

[0328] Examples of metal halides may include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

[0329] Examples of alkali metal halides may include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and CsI.

[0330] Examples of alkaline earth metal halides may include BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2, and BaI2.

[0331] Examples of transition metal halides may include titanium halides (e.g., TiF4, TiCl4, TiBr4, TiI4, etc.), zirconium halides (e.g., ZrF4, ZrCl4, ZrBr4, ZrI4, etc.), hafnium halides (e.g., HfF4, HfCl4, HfBr4, HfI4, etc.), vanadium halides (e.g., VF3, VCl3, VBr3, VI3, etc.), niobium halides (e.g., NbF3, NbCl3, NbBr3, NbI3, etc.), and tantalum halides (e.g., TaF3, TaCl3, T...). aBr3, TaI3, etc.), chromium halides (e.g., CrF3, CrCl3, CrBr3, CrI3, etc.), molybdenum halides (e.g., MoF3, MoCl3, MoBr3, MoI3, etc.), tungsten halides (e.g., WF3, WCl3, WBr3, WI3, etc.), manganese halides (e.g., MnF2, MnCl2, MnBr2, MnI2, etc.), technetium halides (e.g., TcF2, TcCl2, TcBr2, TcI2, etc.), rhenium halides (e.g., ReF2, ReCl2, ReBr2, etc.). 2. ReI2, etc.), iron halides (e.g., FeF2, FeCl2, FeBr2, FeI2, etc.), ruthenium halides (e.g., RuF2, RuCl2, RuBr2, RuI2, etc.), osmium halides (e.g., OsF2, OsCl2, OsBr2, OsI2, etc.), cobalt halides (e.g., CoF2, CoCl2, CoBr2, CoI2, etc.), rhodium halides (e.g., RhF2, RhCl2, RhBr2, RhI2, etc.), iridium halides (e.g., IrF2, IrCl2, Ir... Nickel halides (e.g., NiF2, NiCl2, NiBr2, NiI2), palladium halides (e.g., PdF2, PdCl2, PdBr2, PdI2), platinum halides (e.g., PtF2, PtCl2, PtBr2, PtI2), copper halides (e.g., CuF, CuCl, CuBr, CuI), silver halides (e.g., AgF, AgCl, AgBr, AgI), and gold halides (e.g., AuF, AuCl, AuBr, AuI).

[0332] Examples of post-transition metal halides may include zinc halides (e.g., ZnF2, ZnCl2, ZnBr2, ZnI2, etc.), indium halides (e.g., InI3, etc.), and tin halides (e.g., SnI2, etc.).

[0333] Examples of lanthanide metal halides may include YbF, YbF2, YbF3, SmF3, YbCl, YbCl2, YbCl3, SmCl3, YbBr, YbBr2, YbBr3, SmBr3, YbI, YbI2, YbI3, SmI3, etc.

[0334] Examples of quasi-metal halides can include antimony halides (e.g., SbCl5, etc.).

[0335] Examples of metal tellurides can include alkali metal tellurides (e.g., Li₂Te, Na₂Te, K₂Te, Rb₂Te, Cs₂Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe, BaTe, etc.), and transition metal tellurides (e.g., TiTe₂, ZrTe₂, HfTe₂, V₂Te₃, Nb₂Te₃, Ta₂Te₃, Cr₂Te₃, Mo₂Te₃, W₂Te₃, MnTe, TcTe, ReTe, F₂Te, etc.). (eTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu2Te, CuTe, Ag2Te, AgTe, Au2Te, etc.), post-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.).

[0336] [Emitting layer in intermediate layer 130]

[0337] When the light-emitting device 10 is a full-color light-emitting device, the emitting layer can be patterned into a red emitting layer, a green emitting layer, and / or a blue emitting layer according to the sub-pixels. In an embodiment, the emitting layer may have a stacked structure of two or more layers selected from red, green, and blue emitting layers, in which the two or more layers may be in contact with each other or may be separated from each other to emit white light. In an embodiment, the emitting layer may include two or more materials selected from red, green, and blue emitting materials, in which the two or more materials may be mixed with each other in a single layer to emit white light. For example, the emitting layer may emit blue light.

[0338] In an embodiment, the emission layer may include a first compound represented by Formula 1 and a second compound represented by Formula 2 as described herein.

[0339] The emitter layer may include a host and a dopant.

[0340] In embodiments, the body may include a first compound represented by Formula 1 and a second compound represented by Formula 2 as described herein.

[0341] In embodiments, the dopant may include phosphorescent dopant, fluorescent dopant, or any combination thereof. Phosphorescent and fluorescent dopant, etc., that may be included in the emitting layer may be the same as those described herein.

[0342] Based on 100 parts by weight of the host, the amount of dopant in the emitter layer can range from about 0.01 parts by weight to about 15 parts by weight.

[0343] In one embodiment, the emission layer may include quantum dots.

[0344] In this embodiment, the emission layer may include a delayed fluorescence material. The delayed fluorescence material may be used as a host or as a dopant in the emission layer.

[0345] The thickness of the emission layer can be approximately up to approximately Within a certain range. For example, the thickness of the emission layer can be approximately... up to approximately Within the range described above, excellent light emission characteristics can be obtained without significantly increasing the driving voltage when the thickness of the emitting layer is within any range.

[0346] [main body]

[0347] The main body may include, for example, a carbazole-containing compound, an anthracene-containing compound, or any combination thereof.

[0348] In embodiments, the body may include a compound represented by formula 301:

[0349] [Formula 301]

[0350] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21

[0351] In Equation 301,

[0352] Ar 301 and L 301 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0353] xb11 can be 1, 2, or 3.

[0354] xb1 can be an integer from 0 to 5.

[0355] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) or -P(=O)(Q 301 (Q) 302 ),

[0356] xb21 can be an integer from 1 to 5, and

[0357] Q 301 To Q 303 Each can be independently identical to the description regarding Q1.

[0358] In an embodiment, in formula 301, when xb11 is 2 or greater, two or more Ar 301 They can be connected to each other via a single key.

[0359] In embodiments, the body may include a compound represented by formula 301-1, a compound represented by formula 301-2, or any combination thereof:

[0360] [Formula 301-1]

[0361]

[0362] [Formula 301-2]

[0363]

[0364] In Equations 301-1 and 301-2,

[0365] Ring A 301 To Ring A 304 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0366] X 301 It can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 (R) 305 ) or Si(R 304 (R) 305 ),

[0367] xb22 and xb23 can each be 0, 1, or 2 independently.

[0368] L 301 xb1 and R 301 Each can be the same as described in the instruction manual.

[0369] L 302 To L 304 They can be independently related to L 301 The same as described.

[0370] xb2 to xb4 can each be independently identical to the description of xb1, and

[0371] R 302 To R 305 and R 311 To R 314 They can be independently related to R. 301 The description is the same.

[0372] In embodiments, the host may include alkaline earth metal complexes, post-transition metal complexes, or any combination thereof. In embodiments, the host may include Be complexes (e.g., compound H55), Mg complexes, Zn complexes, or any combination thereof.

[0373] In the embodiments, the main body may include one of compounds HD1 to HD128, 9,10-bis(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN), 9,10-bis(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), 1,3-bis(9-carbazolyl)benzene (mCP), 1,3,5-tris(carbazolyl-9-yl)benzene (TCP), or any combination thereof:

[0374]

[0375]

[0376]

[0377]

[0378]

[0379]

[0380]

[0381] [Phosphorescent dopant]

[0382] Phosphorescent dopants may include at least one transition metal as the center metal.

[0383] Phosphorescent dopants may include monodentate ligands, dipentate ligands, tridentate ligands, tetradentate ligands, pentadentate ligands, hexadentate ligands, or any combination thereof.

[0384] Phosphorescent dopants can be electrically neutral.

[0385] In this embodiment, the phosphorescent dopant may include an organometallic compound represented by formula 401:

[0386] [Formula 401]

[0387] M(L 401 ) xc1 (L 402 ) xc2

[0388] [Formula 402]

[0389]

[0390] In Equations 401 and 402,

[0391] M can be a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)).

[0392] L 401 It can be a ligand represented by Equation 402, and xc1 can be 1, 2, or 3, wherein when xc1 is 2 or greater, two or more L... 401 They can be the same as each other or different from each other.

[0393] L 402 It can be an organic ligand, and xc2 can be 0, 1, 2, 3, or 4, wherein when xc2 is 2 or greater, two or more L... 402 They can be the same or different from each other.

[0394] X 401 and X 402 They can be nitrogen or carbon independently.

[0395] Ring A 401 And Ring A 402 Each can be independently C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group,

[0396] 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 = *',

[0397] X 403 and X 404 They can each be independently chemical bonds (e.g., covalent or coordinate bonds), O, S, N (Q) 413 ), B(Q) 413 ), P(Q 413 ), C(Q 413 (Q) 414 ) or Si(Q 413 (Q) 414 ),

[0398] Q 411 To Q 414 Each can be independently identical to the description regarding Q1.

[0399] R401 and R 402 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 401 (Q) 402 (Q) 403 -N(Q) 401 (Q) 402 -B(Q) 401 (Q) 402 -C(=O)(Q) 401 -S(=O)2(Q) 401 ) or -P(=O)(Q 401 (Q) 402 ),

[0400] Q 401 To Q 403 Each can be independently identical to the description regarding Q1.

[0401] xc11 and xc12 can each be an integer from 0 to 10 independently, and

[0402] In Equation 402, * and *' each indicate the binding site with M in Equation 401.

[0403] In the embodiment, in formula 402, X 401 It can be nitrogen and X 402 It can be carbon, or X. 401 and X 402 Each can be nitrogen.

[0404] In the embodiments, in equations 401 and 402, when xc1 is 2 or greater, two or more L 401 The two rings A 401 Optionally via T as a linking group 402 Connected together, and the two rings A 402 Optionally via T as a linking group 403 Linked together (see compounds PD1 through PD4 and PD7). T 402 and T 403 They can be independently related to T401 The description is the same.

[0405] In Equation 401, L 402 It can be an organic ligand. For example, L... 402 It may include halogen groups, diketone groups (e.g., acetylacetonate groups), carboxylic acid groups (e.g., pyridine carboxyl ester groups), -C (=O), isonitrile groups, -CN, phosphorus-containing groups (e.g., phosphine groups, phosphite groups, etc.) or any combination thereof.

[0406] In the embodiments, the phosphorescent dopant may include, for example, one of compounds PD1 to PD39 or any combination thereof:

[0407]

[0408]

[0409]

[0410] [Fluorescent dopant]

[0411] Fluorescent dopants may include amine-containing compounds, styrene-containing compounds, or any combination thereof.

[0412] In an embodiment, the fluorescent dopant may include a compound represented by formula 501:

[0413] [Formula 501]

[0414]

[0415] In Equation 501,

[0416] Ar 501 L 501 To L 503 R 501 and R 502 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0417] xd1 to xd3 can each be independently 0, 1, 2, or 3, and

[0418] xd4 can be 1, 2, 3, 4, 5 or 6.

[0419] In an embodiment, in formula 501, Ar 501It can be a fused cyclic group in which three or more monocyclic groups are fused together (e.g., anthracene, ...). (e.g., pyrene group, etc.)

[0420] In the embodiment, xd4 can be 2 in Equation 501.

[0421] In the embodiments, the fluorescent dopant may include one of compounds FD1 to FD36, DPVBi, DPAVBi, or any combination thereof:

[0422]

[0423]

[0424]

[0425] [Delayed fluorescence materials]

[0426] In one embodiment, the emission layer may include a delayed fluorescence material.

[0427] In this specification, the delayed fluorescence material may be a compound selected from those capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0428] Depending on the type of other materials included in the emission layer, the delayed fluorescence material included in the emission layer can be used as a host or as a dopant.

[0429] In the embodiments, the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material can be in the range of approximately 0 eV to approximately 0.5 eV. When the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent material satisfies the range described above, an upconversion from the triplet state to the singlet state of the delayed fluorescent material can occur effectively, and therefore, the organic light-emitting device 10 can have improved luminous efficiency.

[0430] In embodiments, delayed fluorescence materials may include: materials containing at least one electron donor (e.g., π-electron-rich C3-C). 60 Cyclic groups (such as carbazole groups) and at least one electron acceptor (e.g., sulfoxide groups, cyano groups, nitrogen-containing C1-C groups lacking π electrons). 60 Materials containing cyclic groups, etc.; or containing C8-C 60 Polycyclic materials, the C8-C 60 Polycyclic groups include at least two cyclic groups that are fused together and simultaneously share boron (B).

[0431] In the embodiments, the delayed fluorescence material may include at least one of, for example, compounds DF1 to DF14:

[0432]

[0433]

[0434] [Quantum dot]

[0435] The emission layer may include quantum dots.

[0436] The specification states that quantum dots can be crystals of semiconductor compounds. Quantum dots can emit light of various wavelengths depending on the size of the crystal. The emission wavelengths of quantum dots can be varied by adjusting the elemental ratios of the quantum dot compound.

[0437] The diameter of quantum dots can be, for example, in the range of about 1 nm to about 10 nm.

[0438] Quantum dots can be synthesized using wet chemical processes, metal-organic chemical vapor deposition, molecular beam epitaxy, or any similar process.

[0439] Wet chemical processes involve mixing precursor materials with organic solvents and growing quantum dot particles into crystals. During crystal growth, the organic solvent naturally acts as a dispersant, coordinating on the surface of the quantum dot crystals and controlling their growth. Therefore, wet chemical processes can be performed more easily than vapor deposition methods such as metal-organic chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE), and the growth of quantum dot particles can be controlled using a low-cost process.

[0440] Quantum dots can 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.

[0441] Examples of group II-VI semiconductor compounds may include: binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, or MgS; ternary compounds such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZ nSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe or MgZnS; quaternary compounds such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe or HgZnSTe; and any combination thereof.

[0442] Examples of group III-V semiconductor compounds may include: binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, or InSb; ternary compounds such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, or InPSb; quaternary compounds such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, or InAlPSb; and any combination thereof. In embodiments, group III-V semiconductor compounds may also include group II elements. Examples of group III-V semiconductor compounds that also include group II elements may include InZnP, InGaZnP, and InAlZnP.

[0443] Examples of III-VI semiconductor compounds may include: binary compounds such as GaS, Ga2S3, GaSe, Ga2Se3, GaTe, InS, InSe, In2Se3, or InTe; ternary compounds such as InGaS3 or InGaSe3; and any combination thereof.

[0444] Examples of group I-III-VI semiconductor compounds may include: ternary compounds such as AgInS, AgInS2, AgInSe2, AgGaS, AgGaS2, AgGaSe2, CuInS, CuInS2, CuInSe2, CuGaS2, CuGaSe2, CuGaO2, AgGaO2, AgAlO2, etc.; quaternary compounds such as AgInGaS2, AgInGaSe2, etc.; and any combination thereof.

[0445] Examples of group IV-VI semiconductor compounds may include: binary compounds such as SnS, SnSe, SnTe, PbS, PbSe, or PbTe; ternary compounds such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, or SnPbTe; quaternary compounds such as SnPbSSe, SnPbSeTe, or SnPbSTe; and any combination thereof.

[0446] Examples of Group IV elements or compounds may include: single-element materials such as Si or Ge; binary compounds such as SiC or SiGe; and any combination thereof.

[0447] Each element included in a compound, such as a binary, ternary, or quaternary compound, can exist in the particles at a uniform or non-uniform concentration. The formulas of the quantum dot compounds described above can each refer to the type of element included in the compound, wherein the elemental proportions of the compound can vary. For example, AgInGaS2 can indicate AgIn... x Ga 1-x S2 (where x is a real number between 0 and 1).

[0448] In embodiments, 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. In embodiments where the quantum dot has a core-shell structure, the materials included in the core and the materials included in the shell may be different from each other.

[0449] The shell of a quantum dot can serve as a protective layer to prevent chemical denaturation of the nucleus and maintain its semiconductor properties, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be single-layered or multi-layered. The interface between the nucleus and the shell can have a concentration gradient, where the concentration of elements present in the shell decreases towards the nucleus.

[0450] Examples of materials for the shell of quantum dots can include metal oxides, quasi-metal oxides, non-metal oxides, semiconductor compounds, and any combination thereof. Examples of metal oxides, quasi-metal oxides, or non-metal oxides can include: binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, NiO, etc.; ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, CoMn2O4, etc.; and any combination thereof.

[0451] Examples of semiconductor compounds may include group II-VI, III-V, III-VI, I-III-VI, IV-VI and any combination thereof as described herein. For example, semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaS, GaSe, AgGaS, AgGaS2, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb or any combination thereof.

[0452] Quantum dots can have a full width at half maximum (FWHM) of an emission wavelength spectrum less than or equal to approximately 45 nm. For example, quantum dots can have an FWHM of an emission wavelength spectrum less than or equal to approximately 40 nm. For example, quantum dots can have an FWHM of an emission wavelength spectrum less than or equal to approximately 30 nm. When the FWHM of a quantum dot is within any of these ranges, the quantum dot can exhibit improved color purity or improved color reproducibility. Light emitted through quantum dots can be emitted in all directions, thereby improving wide viewing angles.

[0453] In the embodiments, quantum dots may be in the form of spherical nanoparticles, pyramidal nanoparticles, multi-armed nanoparticles or cubic nanoparticles, nanotubes, nanowires, nanofibers or nanoplates.

[0454] Because the band gap can be controlled by adjusting the size of the quantum dots or the elemental ratio in the quantum dot compound, light of various wavelengths can be obtained from an emission layer containing quantum dots. Therefore, by using the aforementioned quantum dots (quantum dots of different sizes or quantum dots with different elemental ratios in the quantum dot compound), a light-emitting device emitting light of various wavelengths can be realized. In embodiments, the size of the quantum dots or the elemental ratio of the quantum dot compound can be selected to emit red, green, and / or blue light. The size of the quantum dots can be configured to emit white light by combining various colors of light.

[0455] [Electron transport region in intermediate layer 130]

[0456] The electron transport region can have a structure consisting of a single layer made of a single material, a structure consisting of a single layer comprising different materials, or a structure comprising multiple layers containing different materials.

[0457] 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.

[0458] In embodiments, 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 emitter layer in the order stated therein, but the structure of the electron transport region is not limited thereto.

[0459] Electron transport regions (e.g., buffer layers, hole blocking layers, electron control layers, or electron transport layers within electron transport regions) may include metal-free compounds comprising at least one π-electron-deficient nitrogen-containing C1-C group. 60 Cyclic base.

[0460] In an embodiment, the electron transport region may include a compound represented by Formula 601.

[0461] [Formula 601]

[0462] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21

[0463] In Equation 601,

[0464] Ar 601 and L 601 Each can be independently unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group,

[0465] xe11 can be 1, 2, or 3.

[0466] xe1 can be 0, 1, 2, 3, 4, or 5.

[0467] R 601It can be unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 601 (Q) 602 (Q) 603 -C(=O)(Q) 601 -S(=O)2(Q) 601 ) or -P(=O)(Q 601 (Q) 602 ),

[0468] Q 601 To Q 603 Each can be independently identical to the description regarding Q1.

[0469] xe21 can be 1, 2, 3, 4, or 5, and

[0470] Ar 601 L 601 and R 601 At least one of them can be independently unsubstituted or by at least one R. 10a Substituted π-electron-deficient nitrogen-containing C1-C 60 Cyclic base.

[0471] In an embodiment, in formula 601, when xe11 is 2 or greater, two or more Ar 601 They can be connected together via a single key.

[0472] In an embodiment, in formula 601, Ar 601 It can be unsubstituted or by at least one R 10a Substituted anthracene group.

[0473] In an embodiment, the electron transport region may include a compound represented by formula 601-1:

[0474] [Formula 601-1]

[0475]

[0476] In Equation 601-1,

[0477] X 614 It can be N or C(R) 614 ), X 615 It can be N or C(R) 615 ), X 616 It can be N or C(R) 616 ), and X 614 To X 616At least one of them can be N.

[0478] L 611 To L 613 They can be independently related to L 601 The same as described.

[0479] xe611 to xe613 can each be independently identical to the description concerning xe1.

[0480] R 611 To R 613 They can be independently related to R. 601 The description is the same, and

[0481] R 614 To R 616 They can each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group.

[0482] In the embodiments, in formulas 601 and 601-1, xe1 and xe611 to xe613 can each be 0, 1 or 2 independently.

[0483] In embodiments, the electron transport region may include one of compounds ET1 to ET45, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq3, BAlq, TAZ, NTAZ, TSPO1, TPBI, or any combination thereof:

[0484]

[0485]

[0486]

[0487]

[0488] The thickness of the electron transport region can be approximately up to approximately Within a certain range. For example, the thickness of the electron transport region can be approximately... up to approximately Within the range. When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, hole blocking layer, or electron control layer can each independently be within approximately [a certain range]. up to approximately Within a certain range, and the thickness of the electron transport layer can be approximately up to approximately For example, the thickness of the buffer layer, hole blocking layer, or electronic control layer can each be independently set to approximately [value missing]. up to approximately Within a certain range. For example, the thickness of the electron transport layer can be approximately... up to approximately Within these ranges, satisfactory electron transport characteristics can be obtained without significantly increasing the driving voltage when the thickness of the buffer layer, hole blocking layer, electron control layer, electron transport layer, and / or electron transport region is within these ranges.

[0489] In addition to the materials mentioned above, the electron transport region (e.g., the electron transport layer in the electron transport region) may also include a metallic material.

[0490] Metal-containing materials may include alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The metal ion in an alkali metal complex may be Li, Na, K, Rb, or Cs ions, and the metal ion in an alkaline earth metal complex may be Be, Mg, Ca, Sr, or Ba ions. The ligands coordinated to the metal ion in the alkali metal complex or the metal ion in the alkaline earth metal complex may independently include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof.

[0491] In embodiments, the metal-containing material may include a Li complex. The Li complex may include, for example, compound ET-D1 (Liq) or compound ET-D2:

[0492]

[0493] The electron transport region may include an electron injection layer that facilitates electron injection from the second electrode 150. The electron injection layer may contact (e.g., directly contact) the second electrode 150.

[0494] The electron injection layer can have a structure consisting of a single layer made of a single material, a structure consisting of a single layer comprising different materials, or a structure comprising multiple layers containing different materials.

[0495] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, a compound containing an alkali metal, a compound containing an alkaline earth metal, a compound containing a rare earth metal, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0496] 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.

[0497] The compound containing an alkali metal, the compound containing an alkaline earth metal, and the compound containing a rare earth metal may include 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.

[0498] The compound containing an alkali metal may include: alkali metal oxides such as Li2O, Cs2O, or K2O; alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, or KI; or any combination thereof. The compound containing an alkaline earth metal 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) or Ba x Ca 1-x O (where x is a real number satisfying 0 < x < 1). The compound containing a rare earth metal may include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, or any combination thereof. In an embodiment, the compound containing a rare earth metal may include lanthanide metal tellurides. Examples of lanthanide metal tellurides may include LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La2Te3, Ce2Te3, Pr2Te3, Nd2Te3, Pm2Te3, Sm2Te3, Eu2Te3, Gd2Te3, Tb2Te3, Dy2Te3, Ho2Te3, Er2Te3, Tm2Te3, Yb2Te3, and Lu2Te3.

[0499] Alkali metal complexes, alkaline earth metal complexes, and rare earth metal complexes may include: alkali metal ions, alkaline earth metal ions, or rare earth metal ions; and ligands bonded to the metal ions (e.g., hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof).

[0500] In embodiments, the electron injection layer may consist of alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof as described above. In embodiments, the electron injection layer may also include organic materials (e.g., compounds represented by Formula 601).

[0501] In embodiments, the electron injection layer may be composed of an alkali metal-containing compound (e.g., an alkali metal halide); or the electron injection layer may be composed of an alkali metal-containing compound (e.g., an alkali metal halide) and any combination of alkali metals, alkaline earth metals, rare earth metals, or the like. In embodiments, the electron injection layer may be a KI:Yb co-deposition layer or an RbI:Yb co-deposition layer, etc.

[0502] When the electron injection layer also includes organic materials, alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof may be uniformly or non-uniformly dispersed in the matrix including the organic materials.

[0503] The thickness of the electron injection layer can be approximately up to approximately Within a certain range. For example, the thickness of the electron-injected layer can be approximately... up to approximately Within these ranges, satisfactory electron injection characteristics can be obtained without significantly increasing the driving voltage when the thickness of the electron-injected layer is within any of these ranges as described above.

[0504] [Second electrode 150]

[0505] The second electrode 150 may be disposed on the intermediate layer 130. The second electrode 150 may be a cathode serving as an electron injection electrode. When the second electrode 150 is a cathode, the material used to form the second electrode 150 may include materials with a low work function, such as metals, alloys, conductive compounds, or any combination thereof.

[0506] The second electrode 150 may include lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, or any combination thereof. The second electrode 150 may be a transmission electrode, a semi-transmission / semi-reflection electrode, or a reflection electrode.

[0507] The second electrode 150 may have a single-layer structure or a multi-layer structure.

[0508] [Capping layer]

[0509] 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 intermediate layer 130, and the second electrode 150 are stacked in the order stated herein, or a structure in which the first capping layer, the first electrode 110, the intermediate layer 130, the second electrode 150, and the second capping layer are stacked in the order stated herein, or a structure in which the first capping layer, the first electrode 110, the intermediate layer 130, the second electrode 150, and the second capping layer are stacked in the order stated herein.

[0510] Light generated in the emitting layer of the intermediate layer 130 of the light-emitting device 10 can pass through the first electrode 110, which may be a semi-transparent electrode or a transmissive electrode, and through the first capping layer to the outside. Light generated in the emitting layer of the intermediate layer 130 of the light-emitting device 10 can pass through the second electrode 150, which may be a semi-transparent electrode or a transmissive electrode, and through the second capping layer to the outside.

[0511] The first and second capping layers can each improve the external emission efficiency according to the principle of constructive interference. Therefore, the light extraction efficiency of the light-emitting device 10 is improved, thereby improving the luminous efficiency of the light-emitting device 10.

[0512] The first and second capping layers may each comprise a material having a refractive index greater than or equal to about 1.2 (relative to a wavelength of about 470 nm). In embodiments, the first and second capping layers may each comprise a material having a refractive index greater than or equal to about 1.6 (relative to a wavelength of about 470 nm). For example, the first and second capping layers may each comprise a material having a refractive index greater than or equal to about 1.8 (relative to a wavelength of about 470 nm). For example, the first and second capping layers may each comprise a material having a refractive index greater than or equal to about 2.0 (relative to a wavelength of about 470 nm).

[0513] The first capping layer and the second capping layer can each be independently an organic capping layer including organic materials, an inorganic capping layer including inorganic materials, or an organic-inorganic composite capping layer including both organic and inorganic materials.

[0514] At least one of the first and second capping layers may each independently comprise a carbocyclic compound, a heterocyclic compound, an amino-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthyl phthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, heterocyclic compound, and amino-containing compound may each be optionally substituted with a substituent comprising O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In embodiments, at least one of the first and second capping layers may each independently comprise an amino-containing compound.

[0515] In an embodiment, at least one of the first capping layer and the second capping layer may each independently comprise a compound represented by formula 201, a compound represented by formula 202, or any combination thereof.

[0516] In the embodiments, at least one of the first capping layer and the second capping layer may each independently comprise one of compounds HT28 to HT33, one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0517]

[0518] [membrane]

[0519] Electronic devices may also include films. Films may be, for example, optical components (or light control mechanisms) (e.g., color filters, color conversion components, capping layers, light extraction efficiency enhancement layers, selective light absorption layers, polarization layers, or layers containing quantum dots), light blocking components (e.g., light reflecting layers or light absorbing layers), or protective components (e.g., insulating layers or dielectric layers).

[0520] [Electronic Devices]

[0521] Light-emitting devices can be included in various electronic devices. For example, an electronic device that includes a light-emitting device can be a light-emitting device or an authentication device, etc.

[0522] In addition to the light-emitting device, the electronic device (e.g., the light-emitting device) may also include a color filter, a color conversion layer, or both. The color filter and / or 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 above. In embodiments, the color conversion layer may include quantum dots. Quantum dots may be, for example, quantum dots as described herein.

[0523] An electronic device may include a substrate. The substrate may include multiple sub-pixels, a color filter may include multiple color filter regions corresponding to the multiple sub-pixels, and a color conversion layer may include multiple color conversion regions corresponding to the multiple sub-pixels.

[0524] Pixel-defining films can be arranged between multiple subpixels to define each subpixel.

[0525] The color filter may also include multiple color filter areas and a light-blocking pattern arranged between the multiple color filter areas, and the color conversion layer may also include multiple color conversion areas and a light-blocking pattern arranged between the multiple color conversion areas.

[0526] Multiple color filter regions (or multiple color conversion regions) may include a first region emitting a first color light, a second region emitting a second color light, and / or a third region emitting a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths from each other. 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 multiple color filter regions (or multiple color conversion regions) 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 those described herein. The first region, the second region, and / or the third region may each further include a scatterer.

[0527] In an embodiment, the light-emitting device can emit first light, a first region can absorb the first light to emit first-first-color light, a second region can absorb the first light to emit second-first-color light, and a third region can absorb the first light to emit third-first-color light. In an embodiment, the first-first-color light, the second-first-color light, and the third-first-color light can have different maximum emission wavelengths. For example, the first light can be blue light, the first-first-color light can be red light, the second-first-color light can be green light, and the third-first-color light can be blue light.

[0528] In addition to the light-emitting device described above, the electronic device may also include a thin-film transistor. A thin-film transistor may include a source electrode, a drain electrode, and an active layer, wherein either the source electrode or the drain electrode may be electrically connected to either the first electrode or the second electrode of the light-emitting device.

[0529] Thin-film transistors may also include a gate electrode and a gate insulating film.

[0530] The active layer can include crystalline silicon, amorphous silicon, organic semiconductors, and oxide semiconductors, etc.

[0531] The electronic device may also include a sealing portion for sealing the light-emitting device. The sealing portion may be disposed between the color filter and / or 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 prevents ambient air and moisture from penetrating into the light-emitting device. The sealing portion may be a sealing substrate comprising a transparent glass substrate or a plastic substrate. The sealing portion may be a thin-film encapsulation layer comprising at least one organic layer and an inorganic layer. When the sealing portion is a thin-film encapsulation layer, the electronic device may be flexible.

[0532] Depending on the application of the electronic device, various functional layers may be included on the sealed portion in addition to color filters and / or color conversion layers. Examples of functional layers may include a touch screen layer and a polarization layer. The touch screen layer may be a pressure-sensitive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer.

[0533] In addition to the light-emitting device described above, the authentication device may also include a biometric collector. The authentication device may be a biometric authentication device that authenticates an individual, for example, by using biometric information from a living organism (e.g., fingertip, pupil, etc.).

[0534] Electronic devices can be applied to various displays, light sources, lighting equipment, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic managers, electronic dictionaries, video game consoles, medical instruments (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasound diagnostic devices, or endoscope displays), fish finders, various measuring instruments, meters (e.g., instruments for vehicles, aircraft, and ships), and projectors, etc.

[0535] [Electronic Equipment]

[0536] Light-emitting devices can be included in various electronic equipment.

[0537] For example, electronic equipment including light-emitting devices can be flat panel displays, flexible displays, computer monitors, medical monitors, televisions, billboards, indoor lights, outdoor lights, signal lights, head-up displays, fully transparent displays, partially transparent displays, flexible displays (such as rollable displays, foldable displays, or stretchable displays), laser printers, telephones (such as mobile phones or tablet phones), tablet computers, personal digital assistants (PDAs), wearable devices, laptop computers, digital cameras, video cameras, viewfinders, microdisplays, three-dimensional (3D) displays, virtual reality displays, augmented reality displays, vehicles, video walls with multiple displays spliced ​​together, theater screens, stadium screens, light therapy devices, or bulletin boards.

[0538] Because light-emitting devices have excellent performance in terms of luminous efficiency and long lifespan, electronic equipment that includes light-emitting devices can have the characteristics of high brightness, high resolution and low power consumption.

[0539] [ Figure 2 and Figure 3 [Description]

[0540] Figure 2 This is a schematic cross-sectional view of an electronic device according to an embodiment.

[0541] Figure 2 The electronic device includes a substrate 100, a thin-film transistor (TFT), a light-emitting device, and a package portion 300 that seals the light-emitting device.

[0542] The substrate 100 can be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer 210 can be disposed on the substrate 100. The buffer layer 210 can prevent impurities from penetrating through the substrate 100 and can provide a flat surface on the substrate 100.

[0543] The TFT can 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.

[0544] The active layer 220 may include inorganic semiconductors, organic semiconductors, or oxide semiconductors such as silicon or polysilicon, and may include a source region, a drain region, and a channel region.

[0545] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 can be disposed on the active layer 220, and the gate electrode 240 can be disposed on the gate insulating film 230.

[0546] Interlayer insulating film 250 may be disposed on gate electrode 240. Interlayer insulating film 250 may be disposed between gate electrode 240 and source electrode 260 to insulate gate electrode 240 from source electrode 260, and disposed between gate electrode 240 and drain electrode 270 to insulate gate electrode 240 from drain electrode 270.

[0547] The source electrode 260 and the drain electrode 270 can be disposed on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 can be formed to expose the source region and the drain region of the active layer 220, and the source electrode 260 and the drain electrode 270 can respectively contact the exposed portions of the source region and the drain region of the active layer 220.

[0548] The TFT can be electrically connected to a light-emitting device to drive the light-emitting device, and can be covered and protected by a passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or any combination thereof. A light-emitting device may be provided on the passivation layer 280. The light-emitting device may include a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0549] 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 connected (e.g., electrically connected) to the exposed portion of the drain electrode 270.

[0550] A pixel defining film 290, including insulating material, can be disposed on the first electrode 110. The pixel defining film 290 can expose an area of ​​the first electrode 110, and an intermediate layer 130 can be formed in the exposed area of ​​the first electrode 110. The pixel defining film 290 can be a polyimide-based organic film or a polyacrylic acid-based organic film. Although in Figure 2 Although not shown, at least some layers of the intermediate layer 130 may extend beyond the upper portion of the pixel-defining film 290, thereby being provided as a common layer.

[0551] The second electrode 150 can be disposed on the intermediate layer 130, and a capping layer 170 can also be included on the second electrode 150. The capping layer 170 can be formed to cover the second electrode 150.

[0552] The encapsulation portion 300 may be located on the capping layer 170. The encapsulation portion 300 may be disposed on the light-emitting device to protect it from moisture and / or oxygen. The encapsulation portion 300 may include an inorganic film, including silicon nitride (SiN). x ), silicon dioxide (SiO) x Indium tin oxide, indium zinc oxide, or any combination thereof; organic membranes, including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resins (e.g., polymethyl methacrylate or polyacrylic acid), epoxy resins (e.g., aliphatic glycidyl ether (AGE)), or any combination thereof; or any combination of inorganic and organic membranes.

[0553] Figure 3 This is a schematic cross-sectional view of an electronic device according to another embodiment.

[0554] Figure 3 electronic devices and Figure 2The difference in the electronic device may be at least that the package portion 300 also includes a light-shielding pattern 500 and a functional area 400. 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, it includes... Figure 3 The light-emitting device in an electronic device can be a series of light-emitting devices.

[0555] [ Figure 4 [Description]

[0556] Figure 4 This is a schematic perspective view of an electronic device 1 including a light-emitting device according to an embodiment.

[0557] Electronic equipment 1, which can be a device for displaying moving or still images, can be not only portable electronic devices such as mobile phones, smartphones, tablet computers, mobile communication terminals, e-notebooks, e-readers, portable multimedia players (PMPs), navigation devices, or ultra-mobile personal computers (UMPCs), but also various products such as televisions, laptop computers, monitors, billboards, or Internet of Things (IoT) devices. Electronic equipment 1 can be any such product or part thereof as described above.

[0558] In this embodiment, electronic device 1 may be a wearable device (such as a smartwatch, watch phone, glasses display, or head-mounted display (HMD)) or part of a wearable device. However, the embodiments are not limited thereto.

[0559] In embodiments, examples of electronic equipment 1 may include a vehicle's dashboard, a central information display (CID) arranged on the vehicle's center console or dashboard, an interior mirror display replacing the vehicle's side mirrors, an entertainment display for the rear seats of the vehicle, a display arranged on the back of the front seats of the vehicle, a head-up display (HUD) mounted on the front of the vehicle or projected onto the windshield, or a computer-generated holographic augmented reality head-up display (CGH AR HUD). For ease of illustration, Figure 4 The electronic device 1 shown is an embodiment of a smartphone.

[0560] Electronic equipment 1 may include a display area DA and a non-display area NDA outside the display area DA. The display device can realize an image by a two-dimensional array of pixels arranged in the display area DA.

[0561] The non-display area NDA can be an area where no image is displayed, and it can surround (e.g., completely surround) the display area DA. Drivers for providing electrical signals or power to multiple display elements arranged in the display area DA can be arranged in the non-display area NDA. Pads for areas that can be electrically connected as electronic components or printed circuit boards can be arranged in the non-display area NDA.

[0562] In electronic device 1, the length in the x-axis direction and the length in the y-axis direction can be different from each other. In an embodiment, such as Figure 4 As shown, the length in the x-axis direction can be less than the length in the y-axis direction. In an embodiment, the length in the x-axis direction can be the same as the length in the y-axis direction. In an embodiment, the length in the x-axis direction can be greater than the length in the y-axis direction.

[0563] [ Figure 5 and Figures 6A to 6C [Description]

[0564] Figure 5 This is a schematic perspective view of the exterior of a vehicle 1000, which is an electronic device including a light-emitting device, according to an embodiment. Figures 6A to 6C Each is a schematic diagram of the interior of a vehicle 1000 according to an embodiment.

[0565] refer to Figure 5 , Figure 6A , Figure 6B and Figure 6C Embodiments of the vehicle 1000 may include various devices for moving objects (such as people, objects, or animals) from a point of origin to a destination. Examples of the vehicle 1000 may include vehicles that travel on roads or tracks, ships that move on oceans or rivers, and airplanes that fly in the sky using the action of air.

[0566] The vehicle 1000 can travel on roads or tracks. The vehicle 1000 can move in a selected direction based on the rotation of at least one wheel. In embodiments, examples of the vehicle 1000 may include three- or four-wheeled vehicles, construction machinery, two-wheeled vehicles, prime movers, bicycles, and trains traveling on tracks.

[0567] The vehicle 1000 may include a main body with interior and exterior, and a chassis, the chassis being the part excluding the main body from which the mechanical equipment required for drive is mounted. The exterior of the vehicle 1000's main body may include a front panel, engine hood, roof panel, rear panel, luggage compartment, and pillars provided at the boundaries between multiple doors. The chassis of the vehicle 1000 may include a power generation device, a power transmission device, a drive unit, a steering device, a braking device, a suspension device, a transmission device, a fuel system, front and rear wheels, and left and right wheels.

[0568] The vehicle 1000 may include side window glass 1100, front window glass 1200, side mirrors 1300, instrument cluster 1400, central control instrument panel 1500, passenger seat instrument panel 1600, and display device 2.

[0569] The side window glass 1100 and the front window glass 1200 can be separated by a column arranged between the side window glass 1100 and the front window glass 1200.

[0570] Side window 1100 can be installed on the side of vehicle 1000. In an embodiment, side window 1100 can be installed on a door of vehicle 1000. Multiple side window 1100s can be provided, and the multiple side window 1100s can face each other. In an embodiment, side window 1100 can include a first side window 1110 and a second side window 1120. In an embodiment, the first side window 1110 can be arranged adjacent to instrument cluster 1400, and the second side window 1120 can be arranged adjacent to passenger seat dashboard 1600.

[0571] In one embodiment, the side window panes 1100 may be spaced apart from each other in the x-axis direction or the -x-axis direction. In another embodiment, the first side window pane 1110 and the second side window pane 1120 may be spaced apart from each other in the x-axis direction or the -x-axis direction. For example, a virtual straight line L connecting the side window panes 1100 may extend in the x-axis direction or the -x-axis direction. In another embodiment, a virtual straight line L connecting the first side window pane 1110 and the second side window pane 1120 may extend in the x-axis direction or the -x-axis direction.

[0572] The front windshield 1200 can be installed at the front of the vehicle 1000. The front windshield 1200 can be arranged between multiple side windows 1100 facing each other.

[0573] The side mirror 1300 can provide a rear view of the vehicle 1000. The side mirror 1300 can be mounted on the exterior of the main body of the vehicle 1000. In an embodiment, multiple side mirrors 1300 may be provided. For example, one of the multiple side mirrors 1300 may be arranged outside the first side window 1110, and another of the multiple side mirrors 1300 may be arranged outside the second side window 1120.

[0574] The instrument cluster 1400 can be positioned in front of the steering wheel. The instrument cluster 1400 may include a tachometer, speedometer, coolant temperature gauge, fuel gauge, turn signal indicator, high beam indicator, warning lights, seat belt warning light, odometer, tachometer, automatic shift selector indicator, door open warning light, engine oil warning light, and / or low fuel warning light.

[0575] The central instrument panel 1500 may include a control panel with buttons for adjusting the audio system, air conditioning system, and seat heaters. The central instrument panel 1500 may be located on the side of the instrument cluster 1400.

[0576] The passenger seat instrument panel 1600 may be spaced apart from the instrument cluster 1400, and the central control instrument panel 1500 may be arranged between the instrument cluster 1400 and the passenger seat instrument panel 1600. In an embodiment, the instrument cluster 1400 may be arranged corresponding to the driver's seat (not shown), and the passenger seat instrument panel 1600 may be arranged corresponding to the passenger seat (not shown). In an embodiment, the instrument cluster 1400 may be adjacent to the first side window 1110, and the passenger seat instrument panel 1600 may be adjacent to the second side window 1120.

[0577] In one embodiment, the display device 2 may include a display panel 3, and the display panel 3 may display images. The display device 2 may be disposed inside the vehicle 1000. In another embodiment, the display device 2 may be disposed between a plurality of side windows 1100 facing each other. The display device 2 may be disposed on at least one of the instrument cluster 1400, the central control instrument panel 1500, and the passenger seat instrument panel 1600.

[0578] Display device 2 may include organic light-emitting display devices, inorganic electroluminescent display devices, or quantum dot display devices, etc. Hereinafter, as an example of display device 2, an organic light-emitting display device including a light-emitting device will be described. However, various types of display devices as described above can be used in embodiments.

[0579] refer to Figure 6A The display device 2 can be mounted on the central control instrument panel 1500. In one embodiment, the display device 2 can display navigation information. In another embodiment, the display device 2 can display information about audio settings, video settings, or vehicle settings.

[0580] refer to Figure 6B The display device 2 can be arranged on the instrument cluster 1400. In an embodiment, the instrument cluster 1400 can display driving information, etc., through the display device 2. For example, the instrument cluster 1400 can digitally display driving information, etc. The instrument cluster 1400 can digitally display vehicle information and driving information as images. In an embodiment, the tachometer pointer and instruments, as well as various warning lights or icons, can be displayed via digital signals.

[0581] refer to Figure 6CThe display device 2 can be arranged in / on the passenger seat instrument panel 1600. The display device 2 can be embedded in or arranged on the passenger seat instrument panel 1600. In an embodiment, the display device 2 arranged on the passenger seat instrument panel 1600 can display images related to the information displayed in the instrument cluster 1400 and / or the information displayed in the central control instrument panel 1500. In an embodiment, the display device 2 arranged in / on the passenger seat instrument panel 1600 can display information different from the information displayed in the instrument cluster 1400 and / or the information displayed in the central control instrument panel 1500.

[0582] [Manufacturing Method]

[0583] Layers comprising hole transport regions, emission regions, and electron transport regions can be formed in selected areas using various methods such as vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, and laser-induced thermal imaging.

[0584] When forming layers constituting hole transport regions, emitter regions, and electron transport regions by vacuum deposition, the deposition temperature can be in the range of approximately 100°C to approximately 500°C, depending on the materials included in the layers to be formed and the structure of the layers to be formed, and within approximately 10 -8 To about 10 -3 Under the vacuum level within the range of Torr and at approximately up to approximately Deposition is performed at deposition rates within a certain range.

[0585] [Definition of the term]

[0586] As used in this article, the term "C3-C" 60 A "carbocyclic group" can be a cyclic group consisting of 3 to 60 carbon atoms, with carbon atoms as the sole cyclic atom. As used herein, the term "C1-C" is also relevant. 60 A "heterocyclic group" can be a cyclic group having 1 to 60 carbon atoms and including at least one heteroatom as a cyclic atom in addition to carbon atoms. (C3-C) 60 Carbocyclic groups and C1-C 60 Heterocyclic groups can be monocyclic groups, each consisting of a single ring, or polycyclic groups in which two or more rings are fused together. In the embodiments, C1-C 60 Heterocyclic groups can have 3 to 61 cyclic atoms.

[0587] As used herein, the term "cyclic group" can refer to C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group.

[0588] As used in this article, “π-electron-rich C3-C” 60 A "cyclic group" can be a cyclic group having 3 to 60 carbon atoms and may not include *-N=*' as a cyclic moiety. As used herein, a "π-electron-deficient nitrogen-containing C1-C" group is an example. 60 A "cyclic group" can be a heterocyclic group having 1 to 60 carbon atoms and can include *-N=*' as a cyclic part.

[0589] In an embodiment,

[0590] C3-C 60 The carbocyclic group can be a T1 group or a group in which two or more T1 groups are fused together (e.g., cyclopentadienyl, adamantyl, norbornel, phenyl, pentanenyl, naphthyl, chamomilecycloyl, indaneyl, acenaphthel, phenanthreneyl, anthracite, fluoranyl, benzo[phenanthrene], pyrene, etc.). (e.g., alkyl, perylene, pentylenyl, hepta-enyl, tetraphenyl, fenyl, hexaphenyl, pentaphenyl, rubidyl, benzoyl, ovoleyl, indene, fluorenyl, spirodifluorenyl, benzo[fluorenyl], indene[phenanthryl or indene[anthrayl]),

[0591] C1-C 60 The heterocyclic group can be a T2 group, a group in which two or more T2 groups are fused together, or a group in which at least one T2 group and at least one T1 group are fused together (e.g., pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzothiophene, dibenzofuranyl, indocarbazole, indolecarbazole, benzofuranocarbazole, benzothiophenecarbazole, benzothiophenecarbazole, benzoindocarbazole, benzocarbazole, benzonaphthofuranyl, benzonaphthophene, benzonaphthothiophene, benzofuranodibenzofuranyl, benzofuranodibenzothiophene). Fenyl, benzothiophene, dibenzothiophene, pyrazolyl, imidazole, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, benzopyrazolyl, benzimidazolyl, benzooxazolyl, benzoisooxazolyl, benzothiazolyl, benzoisothiazolyl, pyridyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinoline Phinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cenolinyl, phthalazinyl, naphthidyl, imidazopyridyl, imidazopyrimidyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazoyl, azafluorenyl, azadibenzothiophenyl, azadibenzofuranyl, etc.

[0592] C3-C rich in π electrons 60The cyclic group can be a T1 group, a group in which two or more T1 groups are fused together, a T3 group, a group in which two or more T3 groups are fused together, or a group in which at least one T3 group and at least one T1 group are fused together (e.g., C3-C). 60 Carbocyclic, 1H-pyrrole, thiorrole, borocyclopentadienyl, 2H-pyrrole, 3H-pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiorrole, benzothiophene, benzofuranyl, carbazole, dibenzothiorrole, dibenzothiophene, dibenzofuranyl, indole-carbazole, indole-carbazole, benzofuran-carbazole, benzothiophene-carbazole, benzothiorrole-carbazole, benzoindole-carbazole, benzocarbazole, benzonaphthofuranyl, benzonaphthophene, benzonaphthorrole, benzofuran-dibenzofuranyl, benzofuran-dibenzothiophene or benzothiophene-dibenzothiophene, etc.

[0593] Nitrogen-containing C1-C lacking π electrons 60 The cyclic group can be a T4 group, a group in which two or more T4 groups are fused together, a group in which at least one T4 group and at least one T1 group are fused together, a group in which at least one T4 group and at least one T3 group are fused together, or a group in which at least one T4 group, at least one T1 group and at least one T3 group are fused together (e.g., pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl). Benzisoxazolyl, benzothiazolyl, benzoisothiazolyl, pyridinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinel, cenolinyl, phthalazinyl, naphthinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzothiophene, azadibenzothiophene, and azadibenzofuranyl, etc.), among which,

[0594] 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)yl, norbornenyl, bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[2.2.2]octane, or phenyl.

[0595] The T2 group can be furanyl, thiophene, 1H-pyrrolyl, thiophene, borocyclopentadienyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azathiazolyl, azaboracyclopentadienyl, pyridinyl, pyrimidinyl, pyrazinyl, pyrazinyl, triazinyl, tetraazinyl, pyrrolylalkyl, imidazolyl, dihydropyrrolyl, piperidinyl, tetrahydropyridinyl, dihydropyridinyl, hexahydropyrimidinyl, tetrahydropyrimidinyl, dihydropyrimidinyl, piperazinyl, tetrahydropyrazinyl, dihydropyrazinyl, tetrahydropyrazinyl, or dihydropyrazinyl.

[0596] The T3 group can be furanyl, thiophene, 1H-pyrrole, thiophene, or borocyclopentadienyl, and

[0597] The T4 group can be 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiazolyl, azirthiolyl, aziboranecyclopentadienyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, or tetraazinyl.

[0598] As used in this article, the terms "cyclic group" and "C3-C" are similar. 60 "Carbocyclic group", "C1-C" 60 Heterocyclic groups, π-electron-rich C3-C 60 "Cyclic groups" and "π-electron-deficient nitrogen-containing C1-C" 60 "Cyclic group" can each refer to a group whose structure is fused to any cyclic group, monovalent group, or polyvalent group (e.g., divalent group, trivalent group, tetravalent group, etc.) according to the formula using the corresponding term. For example, "phenyl" can be benzo[a], phenyl, or phenylene, etc., which can be readily understood by those skilled in the art from the structure of a formula including "phenyl".

[0599] In the embodiment, monovalent C3-C 60 Carbocyclic group or monovalent C1-C 60 Examples of heterocyclic groups can include C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic and monovalent non-aromatic fused heterocyclic.

[0600] In the embodiment, divalent C3-C 60 Carbocyclic or divalent C1-C 60 Examples of heterocyclic groups can include C3-C 10Cycloalkylene, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkylene, C1-C 10 Heterocyclic alkenyl, C6-C 60 aryl, C1-C 60 Hybrid aryl, divalent non-aromatic fused polycyclic and divalent non-aromatic fused heterocyclic.

[0601] As used in this article, the term "C1-C" 60 "Alkyl" can be a straight-chain or branched monovalent aliphatic hydrocarbon group having 1 to 60 carbon atoms, and examples of such groups 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, isohexyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodel, sec-decyl, and tert-decyl. The term "C1-C" as used herein... 60 "alkylene" can be C1-C 60 Alkyl groups have the same structure as divalent groups.

[0602] As used in this article, the term "C2-C" 60 "Alkenyl" can be C2-C 60 The alkyl group has at least one carbon-carbon double bond at its middle or end, and examples may include vinyl, propenyl, and butenyl groups. As used herein, the term "C2-C" is used... 60 "Alkenyl" can be C2-C 60 Alkenes are divalent groups with the same structure.

[0603] As used in this article, the term "C2-C" 60 "Alkyne group" can be at C2-C 60 An alkyl group having at least one carbon-carbon triple bond at its middle or end is a monovalent hydrocarbon group, and examples may include ethynyl and propynyl groups. As used herein, the term "C2-C" is used... 60 "Iso-ynyl" can be related to C2-C 60 Alkynes are divalent groups with the same structure.

[0604] As used in this article, the term "C1-C" 60 "Alkyloxy" can be composed of -O(A) 101 (where A) 101 It can be C1-C 60 The alkyl group represents a monovalent group, and examples of alkyl groups may include methoxy, ethoxy, and isopropoxy.

[0605] As used in this article, the term "C3-C" 10 "Cycloalkyl" can be a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and examples of it can include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornel (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]octyl. The term "C3-C" as used herein is also relevant. 10 "Cycloalkylene" can be C3-C 10 Cycloalkyl groups have the same divalent structure.

[0606] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl" can be a monovalent cyclic group having 1 to 10 carbon atoms and including at least one heteroatom as a cyclic atom in addition to the carbon atoms, and examples can include 1,2,3,4-oxatriazolyl, tetrahydrofuranyl, and tetrahydrothiopheneyl. As used herein, the term "C1-C..." 10 "Heterocyclic alkyl" can be C1-C 10 Heterocyclic alkyl groups have the same divalent structure.

[0607] As used in this article, the term "C3-C" 10 "Cycloalkenyl" can be a monovalent cyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its cyclic structure and lacking aromaticity, and examples can include cyclopentenyl, cyclohexenyl, and cycloheptenyl. As used herein, the term "C3-C" is also used. 10 "Iridylene" can be related to C3-C 10 Cycloalkenyl groups are divalent groups with the same structure.

[0608] As used in this article, the term "C1-C" 10 "Heterocyclic alkenyl" can be a monovalent cyclic group having 1 to 10 carbon atoms, including at least one heteroatom as a cyclic atom in addition to carbon atoms, and having at least one double bond in its cyclic structure. C1-C 10 Examples of heterocyclic alkenyl groups may include 4,5-dihydro-1,2,3,4-oxarizolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothiophenyl. As used herein, the term "C1-C..." 10 "Heterocyclic alkenyl" can be related to C1-C 10 Heterocyclic alkenyl groups are divalent groups with the same structure.

[0609] As used in this article, the term "C6-C" 60"Aryl" can be a monovalent group in a carbocyclic aromatic system having 6 to 60 carbon atoms, and as used herein in the term "C6-C". 60 "Arylene" can be a divalent group in a carbocyclic aromatic system with 6 to 60 carbon atoms. (C6-C) 60 Examples of aryl groups may include phenyl, pentanenyl, naphthyl, chamomilecycloyl, indoleyl, acenaphthel, finadeninyl, phenanthreneyl, anthraceneyl, fluoranthraceneyl, benzo[phenanthreneyl], pyreneyl, etc. alkyl, peryl, pentylenyl, hepta-alkenyl, tetraphenyl, framylinyl, hexaphenyl, pentaphenyl, rubidyl, benzoyl, and ovoxyl. When C6-C 60 Aryl and C6-C 60 When each of the aryl groups comprises two or more rings, the corresponding two or more rings can fused together.

[0610] As used in this article, the term "C1-C" 60 "Heteroaryl" can be a monovalent group having 1 to 60 carbon atoms and including at least one heteroatom as a cyclic atom in addition to the carbon atoms in a heterocyclic aromatic system. As used herein, the term "C1-C" is also relevant. 60 "Hypo-heteroaryl" can be a divalent group in a heterocyclic aromatic system having 1 to 60 carbon atoms and including at least one heteroatom as a cyclic atom in addition to the carbon atoms. C1-C 60 Examples of heteroaryl groups may include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, benzo[a]quinolinyl, isoquinolinyl, benzo[a]isoquinolinyl, quinoxalinyl, benzo[a]quinoxalinyl, quinazolinyl, benzo[a]quinazolinyl, cyclolinyl, phenanthrolinel, phthalazinyl, and naphthidyl. When C1-C 60 heteroaryl and C1-C 60 When each heteroaryl group comprises two or more rings, the corresponding two or more rings can fused together.

[0611] As used herein, the term "monovalent nonaromatic fused polycyclic group" can be a monovalent group having two or more rings fused together, with only carbon atoms (e.g., 8 to 60 carbon atoms) as cyclic atoms, and having no aromaticity in its molecular structure when considered as a whole. Examples of monovalent nonaromatic fused polycyclic groups can include indenyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, indo[a]phenanthryl, and indo[a]anthrayl. As used herein, the term "divalent nonaromatic fused polycyclic group" can be a divalent group having the same structure as a monovalent nonaromatic fused polycyclic group.

[0612] As used herein, the term "monovalent nonaromatic fused heteropolycyclic group" can refer to a monovalent group having two or more rings fused together, which includes at least one heteroatom as a cyclic atom in addition to carbon atoms (e.g., 1 to 60 carbon atoms) and is not aromatic in its molecular structure when considered as a whole. Examples of monovalent nonaromatic fused heteropolycyclic groups may include pyrrole, thiophene, furanyl, indole, benzoindole, naphthoindole, isoindole, benzoisoindole, naphthoisoindole, benzothiophene, benzofuranyl, carbazole, dibenzothiophene, dibenzothiophene, dibenzofuranyl, azacarbazole, azafluorenyl, azadibenzothiophene, azadibenzothiophene, azadibenzofuranyl, pyrazolyl, imidazole, triazole, and tetraazole. Oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzooxazolyl, benzothiazolyl, benzooxadiazolyl, benzothiadiazolyl, imidazopyridyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, indocarbazoleyl, indolocarbazoleyl, benzofuranocarbazoleyl, benzothiophenocarbazoleyl, benzene Benzindolocarbazolyl, benzoindolocarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothiophenyl, benzonaphthothiol, benzofuranodibenzofuranyl, benzofuranodibenzothiophenyl, and benzothiophenodibenzothiophenyl. As used herein, the term "divalent nonaromatic fused heteropolycyclic group" can refer to a divalent group having the same structure as a monovalent nonaromatic fused heteropolycyclic group.

[0613] As used in this article, the term "C6-C" 60 "Aryloxy group" can be composed of -O(A 102 The group represented by ) (where A) 102 It can be C6-C 60 Aryl), and as used herein by the term "C6-C" 60 "Arylthio" can be derived from -S(A 103 The group represented by ) (where A) 103 It can be C6-C 60 Aryl).

[0614] As used in this article, the term "C7-C" 60 "Aryl" can be composed of -(A 104 (A) 105 The group represented by ) (where A 104 It can be C1-C 54 Alkylene, and A 105 It can be C6-C 59 Aryl), and as used herein by the term "C2-C 60 "Heteroarylene" can be composed of -(A106 (A) 107 The group represented by ) (where A 106 It can be C1-C 59 Alkylene, and A 107 It can be C1-C 59 (Miscellaneous aromatic compounds).

[0615] In the specification, as used herein, the group "R" 10a "Can be:

[0616] Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano or nitro;

[0617] C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkyl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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)

[0618] C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroaryl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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

[0619] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ).

[0620] In the instruction manual, Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of these can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 alkoxy group; or C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C7-C 60 Aryl or C2-C 60 Heteroalkyl groups, each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 Alkoxy, phenyl, biphenyl, or any combination thereof are used as substitutes.

[0621] As used herein, the term "heteroatom" can refer to any atom other than a carbon or hydrogen atom. Examples of heteroatoms can include O, S, N, P, Si, B, Ge, Se, and any combination thereof.

[0622] In this specification, examples of "transition metals in the third row" may include hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), and gold (Au).

[0623] In the specification, the term "Ph" refers to phenyl, the term "Me" refers to methyl, the term "Et" refers to ethyl, and the terms "tert-Bu" and "Bu" are used interchangeably. t Each refers to tert-butyl, and the term "OMe" refers to methyl methacrylate (MMA).

[0624] As used herein, the term "biphenyl" can mean "phenyl substituted with a phenyl group." For example, "biphenyl" can be a phenyl group having a C6-C ratio. 60 Aryl groups are substituted phenyl groups.

[0625] As used herein, the term "terphenyl" can mean "phenyl substituted with biphenyl". For example, "terphenyl" can be a phenyl group having a C6-C substituted structure. 60 Aryl-substituted C6-C 60 Aryl groups are substituted phenyl groups.

[0626] Unless otherwise defined, the symbols * and *' as used herein refer to binding sites with adjacent atoms in the corresponding formula or part.

[0627] In this specification, the terms "x-axis (x-axis direction)," "y-axis (y-axis direction)," and "z-axis (z-axis direction)" are not limited to the three axes (directions) in an orthogonal coordinate system (e.g., a Cartesian coordinate system), and can 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 can describe axes that are orthogonal to each other, or they can describe axes in different directions that are not orthogonal to each other.

[0628] In the following, the compositions and light-emitting devices according to the embodiments will be described in more detail with reference to examples.

[0629] [Example]

[0630] [Formation of premix P1]

[0631] 1.3g of compound H4 as the first compound and 0.7g of compound E4 as the second compound were mixed and ground with a mortar and pestle to form a premix P1.

[0632] [Formation of premixes P2 to P13 and comparative example premixes C1 to C3]

[0633] Except for the first and second compounds shown in Table 3, which are selected in place of compounds H4 and E4, each of the plurality of premixes is formed in the same manner as that used to form premix P1.

[0634] [Table 3]

[0635]

[0636]

[0637]

[0638]

[0639] [Evaluation Example 1: Evaluation of the properties of the deposited film]

[0640] After filling the crucible with premix P3, repeat the process in the vacuum chamber. The rate at which premixed P3 is deposited onto the glass substrate is up to The thickness of the process was increased until the premix was exhausted. Deposited films 1 through 5 obtained in this manner were each dissolved in dichloromethane and measured by high-performance liquid chromatography (HPLC) after evaporation of the organic solvent therefrom. The percentage changes between the compounds are shown in Table 4.

[0641] [Table 4]

[0642]

[0643] Note: The HPLC percentage of premix P3 prior to deposition was 65.5% for compound H8 and 34.5% for compound E4.

[0644] As shown in Table 4, when the HPLC percentage changes of premix P3 before deposition and the HPLC percentage changes of the co-deposited film after deposition were confirmed, the changes were within 2%, which is very low. Therefore, it can be seen that the ratio of compound H8 as the first compound and compound E4 as the second compound remained uniform throughout deposition films 1 to 5. Thus, it can be confirmed that compositions including the first and second compounds can be used as premix materials without time-dependent changes.

[0645] [Example 1]

[0646] As the anode, Corning 15Ω / cm 2 The ITO glass substrate was cut to a size of 50mm × 50mm × 0.5mm, and treated with isopropanol and pure water for 5 minutes each, followed by cleaning through ultraviolet irradiation and ozone exposure for 30 minutes. The glass substrate was then loaded onto a vacuum deposition apparatus.

[0647] HAT-CN is formed on the substrate to form a structure with... A hole injection layer of a certain thickness is formed. BCFN is then vacuum-deposited on the hole injection layer to form a layer with… A first hole transport layer of a certain thickness is formed, and SiCzCz is vacuum deposited on the first hole transport layer to form a structure with... A second hole transport layer of varying thickness is formed, thus creating a hole transport layer.

[0648] A premix P1, comprising the first compound (according to Formula 1) and the second compound (according to Formula 2), and PtON-TBBI as a phosphorescent dopant, are co-deposited on the hole transport layer at a weight ratio of 87:13 to form a structure with... The thickness of the emission layer.

[0649] Depositing mSiTrz on the emitter layer to form a structure with A first electron transport layer of a certain thickness is formed, and mSiTrz and Liq are co-deposited on the first electron transport layer in a 1:1 ratio to form a second electron transport layer, thereby forming a layer with... An electron transport layer of a certain thickness is formed. LiF, as an alkaline halide, is deposited on the electron transport layer to form an electron transport layer with... An electron-injected layer of a certain thickness is formed, and Al is vacuum-deposited on the electron-injected layer to form a layer with [missing information]. A cathode of a certain thickness is used to complete the manufacturing of the light-emitting device.

[0650]

[0651] [Examples 2 through 13 and comparison examples 1 through 3]

[0652] Except for replacing premix P1 with the premix shown in Table 3 to form the emission layer, each of the multiple light-emitting devices is manufactured in the same manner as in Example 1.

[0653] Evaluation Example 2: Evaluation of the characteristics of the light-emitting device

[0654] To evaluate the characteristics of the light-emitting devices described above in Examples 2 to 13 and Comparative Examples 1 to 3, a test was conducted at 10 mA / cm². 2The driving voltage, current density, and maximum quantum efficiency were measured at a given current density. The driving voltage and current density of the light-emitting device were measured using a source meter (Keithley 2400 series), and the maximum quantum efficiency was measured using an external quantum efficiency measurement device C9920-2-12 from Hamamatsu Photonics Co., Ltd. When evaluating the maximum quantum efficiency, the luminance / current density was measured using a luminance meter calibrated for wavelength sensitivity, and the maximum quantum efficiency was converted by assuming the introduction of an ideal diffuse reflector angular luminance distribution (Lambertian model). Relative lifetime refers to the lifetime relative to the time taken (set to 100%) for the luminance to reach 95% of the initial luminance in Example 5. Table 5 shows the evaluation results of the light-emitting device's characteristics.

[0655] [Table 5]

[0656]

[0657]

[0658] As can be seen from Table 5, compared with the light-emitting devices of Comparative Examples 1 to 3, the light-emitting devices of Examples 1 to 13 according to the present disclosure have excellent driving voltage, excellent maximum quantum efficiency and excellent lifetime characteristics, and the premix used in the light-emitting devices of Examples 1 to 9 according to the present disclosure can be applied as the blue host material for the light-emitting device.

[0659] The first compound represented by Formula 1 and the second compound represented by Formula 2 can be used together as a composition dispensed from a single deposition source in a deposition process, and can be used to manufacture a light-emitting device with substantially uniform properties. Therefore, the first and second compounds can be premixed, and thus the cost and time required to manufacture the light-emitting device can be reduced. In embodiments, the light-emitting device comprising the first and second compounds can have improved lifetime and improved efficiency.

[0660] Embodiments have been disclosed herein, and although terminology has been used, it is used and interpreted in a general and descriptive sense only and is not intended to be limiting. In some instances, as will be apparent to those skilled in the art, unless specifically instructed otherwise, features, characteristics, and / or elements described in connection with the embodiments may be used alone or in combination with features, characteristics, and / or elements described in connection with other embodiments. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of this disclosure.

Claims

1. A composition wherein, The composition comprises: a first compound represented by Formula 1; and The second compound represented by formula 2: Formula 1 Formula 2 Among them, in Equations 1 and 2, Ar1 through Ar3 are each independently unsubstituted or replaced by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, Ar4 is a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, a1 to a4 are each an independent integer from 0 to 2. a1+a2+a3+a4 equals 2. When a4 is 0, *-(Ar4) a4 -*' represents a single key. a1 and Ar1 are either the same or different from each other. a2 Ar2 values ​​may be the same as or different from each other. a3 Ar3s may be the same as or different from each other. a4 Ar4s may be the same as or different from each other. L1 is a single bond, *-C(R) 18 (R) 19 )-*'、*-N(R 18 )-*'、O or S, L2 is a single bond, *-C(R) 28 (R) 29 )-*'、*-N(R 28 )-*'、O or S, L3 is a single bond, *-C(R) 38 (R) 39 )-*'、*-N(R 38 )-*'、O or S, m1 to m3 are each independently 0 or 1. When m1 is 0, *-(L1) m1 -*' represents a single key. When m2 is 0, *-(L2) m2 -*' represents a single key. When m3 is 0, *-(L3) m3 -*' represents a single key. X 91 For N or C(R) 91 ), X 92 For N or C(R) 92 ), X 93 For N or C(R) 93 ), CY 51 CY 52 CY 71 and CY 72 Each independently constitutes C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group, Ar 81 To Ar 83 Each independently is either unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, T 81 To T 83 Each is independently a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, m81 to m83 are each independently 0 or 1. m81+m82+m83 equals 1. When m81 is 0, *-(T 81 ) m81 -*' represents a single key. When m82 is 0, *-(T 82 ) m82 -*' represents a single key. When m83 is 0, *-(T 83 ) m83 -*' represents a single key. R1 to R3, R 18 R 19 R 28 R 29 R 38 R 39 R5, R 61 To R 64 R7, R8 and R 91 To R 93 Each of the following groups is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroalkyl groups, -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), n1 and n3 are each independent integers from 0 to 8. n2 is an integer from 0 to 7. n5 and n7 are each an independent integer from 0 to 20. n8 is an integer from 0 to 4. n1 R1s are either the same or different from each other. n2 R2s are either the same or different from each other. n3 R3s are either the same or different from each other. n5 R5 values ​​may be the same or different from each other. n7 R7s are either the same or different from each other. n8 R8s may be the same or different from each other. R1 to R3, R 18 R 19 R 28 R 29 R 38 and R 39 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, R5, R 61 To R 64 R7, R8 and R 91 To R 93 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, R 10a yes: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro; C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkyl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 a combination thereof) to replace; C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroaryl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 their combination) replace; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 alkoxy group; or C3-C 60 Carbocyclic or C1-C 60 Heterocyclic groups, each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 Alkoxy, phenyl, biphenyl, or combinations thereof are substituted, and * and *' each indicate the binding site with the adjacent atom.

2. The composition according to claim 1, wherein, The difference between the deposition temperature of the first compound and the deposition temperature of the second compound is less than or equal to 20°C.

3. The composition according to claim 1, wherein, In Equation 1, a1 to a3 are each independently 0 or 1, and a4 is 1 or 2.

4. The composition according to claim 1, wherein, The first compound is represented by one of formulas 1-1 to 1-17: Among them, in equations 1-1 to 1-17, R 10 To R 17 Each is independently identical to the one defined with respect to R1 in Equation 1. R 30 To R 37 Each is independently identical to the one defined with respect to R3 in Equation 1. Z 1a To Z 1e Z 2a To Z 2e Z 3a To Z 3e Z 41 and Z 42 Each independently relates to R in Equation 1 10a The same as defined b41 is an integer from 0 to 4. b42 is an integer from 0 to 4, and L1 to L3, m1 to m3, R2 and n2 are each the same as those defined in Equation 1.

5. The composition according to claim 1, wherein, In Equation 1, Ar1 to Ar3 are each independently unsubstituted or substituted by at least one R. 10a Substituted phenyl groups.

6. The composition according to claim 1, wherein, In Formula 1, Ar4 is selected from the groups represented by formulas Ar4(a) to Ar4(c): Among them, in formulas Ar4(a) to Ar4(c), Z 41 With regard to R in Equation 1 10a The same as defined b41 is an integer from 0 to 4, and * and *' each indicate the binding site with the adjacent atom.

7. The composition according to claim 1, wherein, The first compound is one of compounds H1 to H63:

8. The composition according to claim 1, wherein, In Equation 2, X 91 To X 93 At least two of them are N.

9. The composition according to claim 1, wherein, The second compound is represented by formula 2-1: Equation 2-1 In Equation 2-1, R 51 To R 58 Each is independently identical to the one defined with respect to R5 in Equation 2. R 71 To R 78 Each is independently identical to the definition of R7 in Equation 2, and X 91 To X 93 Ar 81 To Ar 83 T 81 To T 83 m81 to m83, R 61 To R 64 R8 and n8 are the same as those defined in Equation 2.

10. The composition according to claim 1, wherein, In Equation 2, T 81 To T 83 Each group is independently selected from those represented by formulas T8(a) to T8(c): Among them, in equations T8(a) to T8(c), Z8 and R in Equation 1 10a The same as defined b8 is an integer from 0 to 4, and * and *' each indicate the binding site with the adjacent atom.

11. The composition according to claim 1, wherein, In Equation 2, Ar 81 To Ar 83 Each independently is either unsubstituted or by at least one R 10a Substituted phenyl groups.

12. The composition according to claim 1, wherein, The second compound is one of compounds E1 to E33:

13. The composition according to claim 1, wherein, The first compound has a highest occupied molecular orbital energy level greater than or equal to -5.6 eV, and The second compound has a lowest unoccupied molecular orbital energy level of less than or equal to -2.6 eV.

14. The composition according to claim 1, wherein, Each of the first compound and the second compound has a triplet energy level greater than or equal to 2.8 eV.

15. A light-emitting device, wherein, The light-emitting device includes: First electrode; The second electrode faces the first electrode; and An intermediate layer, located between the first electrode and the second electrode, includes an emission layer, wherein... The emission layer comprises a first compound represented by Formula 1 and a second compound represented by Formula 2: Formula 1 Formula 2 Among them, in Equations 1 and 2, Ar1 through Ar3 are each independently unsubstituted or replaced by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, Ar4 is a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, a1 to a4 are each an independent integer from 0 to 2. a1+a2+a3+a4 equals 2. When a4 is 0, *-(Ar4) a4 -*' represents a single key. a1 and Ar1 are either the same or different from each other. a2 Ar2 values ​​may be the same as or different from each other. a3 Ar3s may be the same as or different from each other. a4 Ar4s may be the same as or different from each other. L1 is a single bond, *-C(R) 18 (R) 19 )-*'、*-N(R 18 )-*'、O or S, L2 is a single bond, *-C(R) 28 (R) 29 )-*'、*-N(R 28 )-*'、O or S, L3 is a single bond, *-C(R) 38 (R) 39 )-*'、*-N(R 38 )-*'、O or S, m1 to m3 are each independently 0 or 1. When m1 is 0, *-(L1) m1 -*' represents a single key. When m2 is 0, *-(L2) m2 -*' represents a single key. When m3 is 0, *-(L3) m3 -*' represents a single key. X 91 For N or C(R) 91 ), X 92 For N or C(R) 92 ), X 93 For N or C(R) 93 ), CY 51 CY 52 CY 71 and CY 72 Each independently constitutes C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group, Ar 81 To Ar 83 Each independently is either unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, T 81 To T 83 Each is independently a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, m81 to m83 are each independently 0 or 1. m81+m82+m83 equals 1. When m81 is 0, *-(T 81 ) m81 -*' represents a single key. When m82 is 0, *-(T 82 ) m82 -*' represents a single key. When m83 is 0, *-(T 83 ) m83 -*' represents a single key. R1 to R3, R 18 R 19 R 28 R 29 R 38 R 39 R5, R 61 To R 64 R7, R8 and R 91 To R 93 Each of the following groups is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroalkyl groups, -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), n1 and n3 are each independent integers from 0 to 8. n2 is an integer from 0 to 7. n5 and n7 are each an independent integer from 0 to 20. n8 is an integer from 0 to 4. n1 R1s are either the same or different from each other. n2 R2s are either the same or different from each other. n3 R3s are either the same or different from each other. n5 R5 values ​​may be the same or different from each other. n7 R7s are either the same or different from each other. n8 R8s may be the same or different from each other. R1 to R3, R 18 R 19 R 28 R 29 R 38 and R 39 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, R5, R 61 To R 64 R7, R8 and R 91 To R 93 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, R 10a yes: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro; C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkyl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 a combination thereof) to replace; C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroaryl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 their combination) replace; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 )或-P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 alkoxy group; or C3-C 60 Carbocyclic or C1-C 60 Heterocyclic groups, each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 Alkoxy, phenyl, biphenyl, or combinations thereof are substituted, and * and *' each indicate the binding site with the adjacent atom.

16. The light-emitting device according to claim 15, wherein, The first compound and the second compound each have a triplet energy level greater than or equal to 2.8 eV.

17. The light-emitting device according to claim 15, wherein, The emitting layer emits blue light.

18. A light-emitting device, wherein, The light-emitting device includes: First electrode; The second electrode faces the first electrode; m emission units are stacked between the first electrode and the second electrode; and There are m-1 charge generation layers, each located between two adjacent emission units among the m emission units, wherein... m is an integer of 2 or greater. Each of the m transmitting units independently includes an intermediate layer containing the transmitting layer, and The emission layer of at least one of the m emission units comprises a first compound represented by Formula 1 and a second compound represented by Formula 2: Formula 1 Formula 2 Among them, in Equations 1 and 2, Ar1 through Ar3 are each independently unsubstituted or replaced by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, Ar4 is a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, a1 to a4 are each an independent integer from 0 to 2. a1+a2+a3+a4 equals 2. When a4 is 0, *-(Ar4) a4 -*' represents a single key. a1 and Ar1 are either the same or different from each other. a2 Ar2 values ​​may be the same as or different from each other. a3 Ar3s may be the same as or different from each other. a4 Ar4s may be the same as or different from each other. L1 is a single bond, *-C(R) 18 (R) 19 )-*'、*-N(R 18 )-*'、O or S, L2 is a single bond, *-C(R) 28 (R) 29 )-*'、*-N(R 28 )-*'、O or S, L3 is a single bond, *-C(R) 38 (R) 39 )-*'、*-N(R 38 )-*'、O or S, m1 to m3 are each independently 0 or 1. When m1 is 0, *-(L1) m1 -*' represents a single key. When m2 is 0, *-(L2) m2 -*' represents a single key. When m3 is 0, *-(L3) m3 -*' represents a single key. X 91 For N or C(R) 91 ), X 92 For N or C(R) 92 ), X 93 For N or C(R) 93 ), CY 51 CY 52 CY 71 and CY 72 Each independently constitutes C3-C 60 Carbocyclic or C1-C 60 Heterocyclic group, Ar 81 To Ar 83 Each independently is either unsubstituted or by at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, T 81 To T 83 Each is independently a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, m81 to m83 are each independently 0 or 1. m81+m82+m83 equals 1. When m81 is 0, *-(T 81 ) m81 -*' represents a single key. When m82 is 0, *-(T 82 ) m82 -*' represents a single key. When m83 is 0, *-(T 83 ) m83 -*' represents a single key. R1 to R3, R 18 R 19 R 28 R 29 R 38 R 39 R5, R 61 To R 64 R7, R8 and R 91 To R 93 Each of the following groups is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C2-C 60 alkenyl, unsubstituted or with at least one R 10a Replacement C2-C 60 Alkyne group, unsubstituted or with at least one R 10a Replacement C1-C 60 Alkyl, unsubstituted, or with at least one R 10a Replacement C3-C 60 Carbocyclic, unsubstituted, or with at least one R 10a Replacement C1-C 60 Heterocyclic group, unsubstituted or with at least one R 10a Replacement C6-C 60 aryloxy group, unsubstituted or with at least one R 10a Replacement C6-C 60 Aryl thiols, unsubstituted or with at least one R 10a Replacement C7-C 60 Aryl, unsubstituted or with at least one R 10a Replacement C2-C 60 Heteroalkyl groups, -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), n1 and n3 are each independent integers from 0 to 8. n2 is an integer from 0 to 7. n5 and n7 are each an independent integer from 0 to 20. n8 is an integer from 0 to 4. n1 R1s are either the same or different from each other. n2 R2s are either the same or different from each other. n3 R3s are either the same or different from each other. n5 R5 values ​​may be the same or different from each other. n7 R7s are either the same or different from each other. n8 R8s may be the same or different from each other. R1 to R3, R 18 R 19 R 28 R 29 R 38 and R 39 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, R5, R 61 To R 64 R7, R8 and R 91 To R 93 Two or more of them may optionally be bonded to each other to form an unsubstituted or R-terminated compound. 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic group, R 10a yes: Deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro; C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group or C1-C 60 Alkyl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 a combination thereof) to replace; C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl or C2-C 60 Heteroaryl groups, each unsubstituted or substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C7-C 60 Aryl alkyl, C2-C 60 heteroaryl, -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 their combination) replace; or -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) or -P(=O)(Q 31 )(Q 32 ), Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 alkoxy group; or C3-C 60 Carbocyclic or C1-C 60 Heterocyclic groups, each unsubstituted or replaced by deuterium, -F, cyano, C1-C 60 Alkyl, C1-C 60 Alkoxy, phenyl, biphenyl, or combinations thereof are substituted, and * and *' each indicate the binding site with the adjacent atom.

19. An electronic device, wherein, The electronic device includes: The light-emitting device according to claim 15.

20. An electronic device, wherein, The electronic equipment include: The light-emitting device according to claim 15.

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