Compositions and organic light emitting devices comprising the same

Abstract

The present invention relates to compositions and organic light emitting devices including the same. The compositions include a first compound, a second compound, and a third compound, wherein the first, second, and third compounds are different from each other, the first compound satisfies one of Condition 1 and Condition 2 as described herein, and the second compound includes a compound represented by Formula 1, wherein Ring A1 is a fused ring group in which 3 or more cyclic groups are fused to each other, and the 3 or more cyclic groups are each a C5-C 30 carbocyclic group or a C1-C 30 heterocyclic group; a1 is an integer of 1-5; b1 is an integer of 3-10; and L1, R1, and R2 are as described herein. Formula 1

Description

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2021-0001063 filed on January 5, 2021 and Korean Patent Application No. 10-2022-0000511 filed on January 3, 2022, the entire contents of which are incorporated herein by reference. Technical Field

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

[0004] Organic light-emitting diodes (OLEDs) are self-emitting devices that produce full-color images. Compared to other electronic devices, OLEDs offer wide viewing angles, high contrast, short response times, and superior characteristics in terms of brightness, driving voltage, and response speed.

[0005] For example, an organic light-emitting device includes an anode, a cathode, and an organic layer located between the anode and the cathode, wherein the organic layer includes an emitting layer. A hole transport region may be located between the anode and the emitting layer, and an electron transport region may be located between the emitting layer and the cathode. Holes supplied from the anode can move towards the emitting layer through the hole transport region, and electrons supplied from the cathode can move towards the emitting layer through the electron transport region. Holes and electrons can recombine in the emitting layer to generate excitons. These excitons transition from an excited state to the ground state, thereby producing light, such as visible light. Summary of the Invention

[0006] One or more embodiments include a composition and an organic light-emitting device comprising the same.

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

[0008] A composition is provided comprising a first compound, a second compound, and a third compound.

[0009] The first compound, the second compound, and the third compound are different from each other.

[0010] The first compound satisfies one of conditions 1 and 2, and

[0011] The second compound includes compounds represented by Formula 1.

[0012] Condition 1

[0013] The first compound contains a transition metal.

[0014] Condition 2

[0015] The energy difference between the triplet level and the singlet level of the first compound is 0.4 eV or less, and the first compound emits delayed fluorescence.

[0016]

[0017] In Formula 1, ring A1 can be a fused ring group in which three or more cyclic groups are fused together, and the cyclic groups can be C5-C6. 30 Carbocyclic groups or C1-C 30 Heterocyclic groups,

[0018] In Equation 1, L1 can be a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C5-C 30 The carbocyclic group, or the unsubstituted group or the group with at least one R 10a Replacement C1-C 30 Heterocyclic groups,

[0019] In Equation 1, a1 can be an integer from 1 to 5.

[0020] In Equation 1, b1 is an integer between 3 and 10, and

[0021] R1 in Formula 1 can be a group represented by Formula 2 or Formula 3.

[0022]

[0023] In equations 2 and 3, rings A3 and A4 can each be independently C5-C. 30 Carbocyclic groups or C1-C 30 Heterocyclic groups,

[0024] In formulas 2 and 3, T3 and T4 can each be independently represented by a group consisting of *-C(R5)(R6)(R7) or *-Si(R5)(R6)(R7).

[0025] In equations 2 and 3, c3 and c4 can each be an independent integer from 0 to 10. When c3 is 2 or greater, two or more T3s can be the same or different from each other, and when c4 is 2 or greater, two or more T4s can be the same or different from each other.

[0026] T in Equation 3 11 It can be a single bond, O, S, N(R8), C(R8)(R9), or Si(R8)(R9).

[0027] R2-R9 and R in equations 1 to 3 10aEach group can independently be hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), -P(=O)(Q8)(Q9), -P(=S)(Q8)(Q9), or -P(Q8)(Q9),

[0028] In equations 1 to 3, b2-b4 can each be an integer from 0 to 10 independently. When b2 is 2 or greater, two or more R2s can be the same or different from each other; when b3 is 2 or greater, two or more R3s can be the same or different from each other; and when b4 is 2 or greater, two or more R4s can be the same or different from each other.

[0029] Replacement C1-C 60 Alkyl, substituted C2-C 60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60Alkoxy, substituted C1-C 60 Alkylthio, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C7-C 60 Alkyl aryl, substituted C7-C 60 Arylalkyl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthio, substituted C1-C 60 heteroaryl, substituted C2-C 60 Alkyl heteroaryl, substituted C2-C 60 Heteroarylalkyl, substituted C1-C 60 Heteroaryl groups, substituted C1-C 60 The substituents of heteroarylsulfo groups, substituted monovalent non-aromatic fused polycyclic groups, and substituted monovalent non-aromatic fused heterocyclic groups are:

[0030] Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, or C1-C 60 Alkoxy

[0031] Each of the C1-Cs is replaced by at least one of the following: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -N(Q 11 (Q) 12 ), -Si(Q 13 (Q) 14 (Q) 15 -Ge(Q) 13 (Q) 14 (Q) 15 -B(Q) 16 (Q) 17 -P(=O)(Q) 18 (Q) 19 -P(=S)(Q8)(Q9), -P(Q 18 (Q) 19 ), or a combination thereof,

[0032] Each of the following C3-Cs is either not substituted or is substituted by at least one of the following: 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, or monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid groups or their salts, sulfonic acid groups or their salts, phosphate groups or their salts, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C1-C 60 Alkylthio, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C7-C 60 Alkyl aryl, C7-C 60 Arylalkyl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C2-C60 Alkyl heteroaryl, C2-C 60 Heteroarylalkyl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -N(Q) 21 (Q) 22 ), -Si(Q 23 (Q) 24 (Q) 25 -Ge(Q) 23 (Q) 24 (Q) 25 -B(Q) 26 (Q) 27 -P(=O)(Q) 28 (Q) 29 -P(=S)(Q8)(Q9), -P(Q 28 (Q) 29 ), or a combination thereof,

[0033] -N(Q 31 (Q) 32 ), -Si(Q 33 (Q) 34 (Q) 35 -Ge(Q) 33 (Q) 34 (Q) 35 -B(Q) 36 (Q) 37 -P(=O)(Q) 38 (Q) 39 -P(=S)(Q8)(Q9), or -P(Q 38 (Q) 39 ),or

[0034] Its combination,

[0035] Among them, Q1-Q9, Q 11 -Q 19 Q 21 -Q 29 , and Q 31 -Q 39 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; amidine; hydrazine; hydrazone; carboxylic acid group or salt thereof; sulfonic acid group or salt thereof; phosphate group or salt thereof; C1-C that is unsubstituted or substituted with at least one of the following 60 Alkyl; deuterium, C1-C 60 Alkyl, C6-C 60 aryl, or combinations thereof; C2-C 60 Alkenyl; C2-C60 Alkyne group; C1-C 60 Alkoxy group; C1-C 60 Alkylthio group; C3-C 10 cycloalkyl; C1-C 10 Heterocyclic alkyl; C3-C 10 Cycloalkenyl; C1-C 10 Heterocyclic alkenyl; C6-C unsubstituted or substituted with at least one of the following 60 Aryl; Deuterium, C1-C 60 Alkyl, C6-C 60 aryl, or combinations thereof; C6-C 60 Aryloxy group; C6-C 60 Arylthio; C1-C 60 heteroaryl; C2-C 60 Alkyl heteroaryl; C2-C 60 Heteroarylalkyl; C1-C 60 Heteroaryloxy group; C1-C 60 Heteroaryl thio group; monovalent non-aromatic fused polycyclic group; or monovalent non-aromatic fused heterocyclic group.

[0036] According to one or more aspects, organic light-emitting devices include

[0037] First electrode,

[0038] The second electrode, and

[0039] The organic layer located between the first electrode and the second electrode,

[0040] The organic layer mentioned above includes an emission layer, and

[0041] The organic layer therein comprises the composition.

[0042] According to one or more aspects, organic light-emitting devices include:

[0043] First electrode,

[0044] Second electrode,

[0045] m light-emitting units located between the first electrode and the second electrode and including at least one emission layer, and

[0046] The m-1 charge generation layers are located between two adjacent light-emitting units and include an n-type charge generation layer and a p-type charge generation layer.

[0047] Where m is an integer of 2 or greater.

[0048] The maximum emission wavelength of light emitted from at least one of the m light-emitting units may be different from the maximum emission wavelength of light emitted from at least one of the remaining light-emitting units.

[0049] The at least one emitting layer comprises the composition.

[0050] According to one or more aspects, organic light-emitting devices include:

[0051] First electrode,

[0052] The second electrode, and

[0053] m emission layers located between the first electrode and the second electrode

[0054] Where m is an integer of 2 or greater.

[0055] The maximum emission wavelength of light emitted from at least one of the m emission layers may differ from the maximum emission wavelength of light emitted from at least one of the remaining emission layers.

[0056] At least one emitter layer comprises the composition. Attached Figure Description

[0057] The above and other aspects, features, and advantages of some embodiments of this disclosure will become clearer from the following description taken in conjunction with the accompanying drawings, wherein

[0058] Figure 1 A schematic cross-sectional view of an organic light-emitting device according to one or more embodiments is shown;

[0059] Figure 2 A schematic cross-sectional view of an organic light-emitting device according to another embodiment;

[0060] Figure 3 A schematic cross-sectional view of an organic light-emitting device according to another embodiment;

[0061] Figure 4 The external quantum efficiency (EQE, %) of the organic light-emitting devices manufactured according to Examples 1-1 to 1-3 and Comparative Example 1 is compared with the luminance (candela / m², cd / m²). 2 (The diagram; and)

[0062] Figure 5 A graph showing the brightness (%) of the organic light-emitting devices manufactured according to Examples 1-1 to 1-3 and Comparative Example 1 against time (hours, hr);

[0063] Figure 6 The EQE (%) of the organic light-emitting devices manufactured according to Comparative Examples 1 and 1-1 to 1-3 is compared with the luminance (cd / m²). 2(The image is missing from the original text.)

[0064] Figure 7 A graph showing the brightness (%) versus time (hours) of the organic light-emitting devices manufactured according to Comparative Examples 1 and 1-1 to 1-3;

[0065] Figure 8 The EQE (%) of the organic light-emitting devices manufactured according to Examples 2-1 to 2-3 and Comparative Example 2 is compared with the luminance (cd / m²). 2 (The image is missing from the original text.)

[0066] Figure 9 A graph showing the brightness (%) versus time (hours) of the organic light-emitting devices manufactured according to Examples 2-1 to 2-3 and Comparative Example 2;

[0067] Figure 10 The EQE (%) of the organic light-emitting devices manufactured according to Comparative Examples 2 and 2-1 to 2-3 is compared with the luminance (cd / m²). 2 (The image is missing from the original text.)

[0068] Figure 11 A graph showing the brightness (%) versus time (hours) of the organic light-emitting devices manufactured according to Comparative Examples 2 and 2-1 to 2-3;

[0069] Figure 12 The EQE (%) of the organic light-emitting devices manufactured according to Examples 3-1 and Comparative Example 3 is compared with the luminance (cd / m²). 2 (The image is missing from the original text.)

[0070] Figure 13 A graph showing the brightness (%) of the organic light-emitting devices manufactured according to Example 3-1 and Comparative Example 3 against time (hours);

[0071] Figure 14 The EQE (%) of the organic light-emitting devices manufactured according to Comparative Examples 3 and 3-1 is compared with the luminance (cd / m²). 2 (The image is missing from the original text.)

[0072] Figure 15 A graph showing the brightness (%) of the organic light-emitting devices manufactured according to Comparative Examples 3 and 3-1 against time (hours);

[0073] Figure 16 A graph showing the relative HOD values ​​measured in Examples 1-1, Comparative Example 1, and Comparative Example 1-1; and

[0074] Figure 17 A graph showing the relative HOD values ​​measured for Example 2-1, Comparative Example 2, and Comparative Example 2-1. Detailed Implementation

[0075] The embodiments will now be described in detail, examples of which are shown in the accompanying drawings, wherein the same reference numerals throughout the description refer to the same elements. In this respect, the embodiments may take different forms and should not be construed as limited to the description set forth herein. Therefore, the embodiments are described below only by reference to the accompanying drawings to illustrate aspects. As used herein, the term “and / or” includes any and all combinations of one or more of the associated enumerated items. Expressions such as “at least one of” modify the entire list of elements and not individual elements of the list when appearing before or after the list of elements.

[0076] The terminology used herein is for the purpose of describing one or more exemplary embodiments only and is not intended to be limiting. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term “or” means “and / or”. It will be further understood that the terms “comprising” or “including” as used in this specification indicate the presence of the stated features, regions, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more additional features, regions, integrals, steps, operations, elements, components, and / or sets thereof.

[0077] It will be understood that although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or portion from another. Therefore, without departing from the teachings of this embodiment, the first element, component, region, layer, or portion discussed below may be referred to as the second element, component, region, layer, or portion.

[0078] Exemplary embodiments are described herein with reference to cross-sectional views that serve as schematic representations of idealized embodiments. Thus, deviations from the shapes shown in the figures will be anticipated as a result of, for example, manufacturing techniques and / or tolerances. Therefore, the embodiments described herein should not be construed as limited to the specific shapes of the regions illustrated herein, but rather include deviations in shape caused, for example, by manufacturing processes. For example, regions illustrated or described as flat may typically have rough and / or non-linear characteristics. Furthermore, sharp corners in the figures may be rounded. Therefore, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shapes of the regions nor to limit the scope of the claims.

[0079] It will be understood that when an element is referred to as being "on" another element, it may be in direct contact with said other element or there may be an intermediate element between them. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element.

[0080] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this general inventive concept pertains. It will be further understood that terms, such as those defined in commonly used dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in the present disclosure, and shall not be interpreted in an idealized or overly formal sense unless clearly defined herein.

[0081] As used herein, “about” or “approximately” includes the stated value and means within an acceptable range of deviations from the specific value, as determined by a person skilled in the art taking into account the measurement in question and the errors associated with the measurement of the specific quantity (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations relative to the stated value, or within ±30%, 20%, 10%, or 5%.

[0082] Composition

[0083] The composition comprises a first compound, a second compound, and a third compound. The first compound, the second compound, and the third compound are the same as those described herein.

[0084] The first, second, and third compounds included in the composition are different from each other. That is, the composition may include three or more compounds that are different from each other.

[0085] The composition can satisfy the following condition 3:

[0086] Condition 3

[0087] E HOMO_C1 -0.4eV≤E HOMO_C2 ≤E HOMO_C1 +0.1eV

[0088] In condition 3, E HOMO_C1 E represents the energy level of the highest occupied molecular orbital (HOMO) of the first compound. HOMO_C2 denoted as HOMO energy level value of the second compound, where eV is electron volt.

[0089] In this respect, the HOMO energy level value was measured using an atmospheric pressure photoelectron spectroscopy apparatus (manufactured by RIKEN KEIKI Co., Ltd.: AC3).

[0090] When the composition satisfies condition 3, hole trapping in the second compound is suppressed, and therefore, the direct formation of excitons in the second compound due to electron-hole recombination can be prevented. That is, the following mechanism can be achieved: excitons are first formed by the sensitizer (first compound), and then the excitons move to the second compound, which is the final luminescent material, through energy transfer, and then emit light.

[0091] The composition can satisfy the following condition 4:

[0092] Condition 4

[0093] R(HOD) H / R(HOD)0≤1.07

[0094] In condition 4, R(HOD) H R(HOD)0 is the relative HOD value of the composition comprising the first compound, the second compound, and the third compound, and R(HOD)0 is the relative HOD value of the composition comprising the first compound and the third compound.

[0095] In this respect, the relative HOD value refers to the ratio of the applied voltage required to provide a specific current density to a single hole-only device (HOD), and the relative HOD value is obtained by dividing the voltage applied to a HOD doped with the final luminescent material (the second compound) by the voltage applied to an undoped HOD. The HOD structure may have, for example, the following structure, and its fabrication method is the same as described herein:

[0096] ITO / HAT-CN (10nm) / NPB (50nm) / Test Material (40nm) / NPB (10nm) / Al

[0097] The first compound can satisfy either condition 1 or condition 2:

[0098] Condition 1

[0099] The first compound contains a transition metal.

[0100] Condition 2

[0101] The energy difference between the triplet energy level and the singlet energy level of the first compound is 0.4 eV or less, and the first compound can emit delayed fluorescence.

[0102] According to one or more embodiments, the first compound may satisfy condition 1.

[0103] For example, the first compound may include an organometallic compound represented by formula 101:

[0104] Formula 101

[0105] M 11 (L 11 ) n11 (L 12 ) n12

[0106] In Equation 101,

[0107] M 11 It can be a transition metal in the first row of the periodic table, a transition metal in the second row of the periodic table, or a transition metal in the third row of the periodic table.

[0108] L 11 It can be a ligand represented by one of formulas 101-1 to 101-4;

[0109] L 12 It can be a monodentate ligand or a bidentate ligand;

[0110] n11 can be 1.

[0111] n12 can be 0, 1, or 2;

[0112]

[0113] Among them, in equations 101-1 to 101-4,

[0114] A 101 To A 104 Each can be independently substituted or unsubstituted C5-C. 30 Carbocyclic group, substituted or unsubstituted C1-C 30 Heterocyclic groups, or acyclic groups,

[0115] Y 101 To Y 104 Each can independently form a chemical bond, O, S, N (R) 91 ), B(R) 91 ), P(R 91 ), or C(R) 91 (R) 92 ),

[0116] T 101 To T 104 Each can be independently a single bond, double bond, or N(R) bond. 93 ), B(R) 93 ), P(R 93 ), C(R 93 (R) 94 ), Si(R) 93 (R) 94 ), Ge(R) 93 (R) 94), S, Se, O, C(=O), S(=O), S(=O)2, -C(R 93 =, =C(R) 93 )-、C(R 93 )=C(R 94 C (=S), or C≡C,

[0117] Replacement C5-C 30 Substituents of carbocyclic groups, C1-C substitutions 30 Substituents of heterocyclic groups, and R 91 -R 94 Each can independently be at least one of the following: hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -C(=O)(Q 41 -S(=O)(Q) 41 -S(=O)2(Q) 41 -N(Q) 42 (Q) 43 -B(Q)42 (Q) 43 ), -Si(Q 44 (Q) 45 (Q) 46 -Ge(Q) 44 (Q) 45 (Q) 46 -P(=O)(Q) 47 (Q) 48 -P(=S)(Q) 47 (Q) 48 ), and -P(Q 47 (Q) 48 ), in which C5-C is replaced 30 Substituents in carbocyclic groups and the C1-C substituents 30 The substituents in the heterocyclic group do not necessarily have to be hydrogen.

[0118] *1, *2, *3, and *4 can each represent M. 11 The binding site, and

[0119] Q 41 -Q 48 Each of these groups can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkyne group, C1-C 60 Alkoxy, C1-C 60 Alkylthio group, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C7-C 60 Alkyl aryl, C7-C 60 Arylalkyl, C6-C 60 Aryloxy group, C6-C 60 Arylthioyl, C1-C 60 heteroaryl, C2-C 60 Alkyl heteroaryl, C2-C 60 Heteroarylalkyl, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, denoted by deuterium, -F, cyano, C1-C 60 Alkyl, or C6-C 60 At least one substituted C1-C of aryl60 Alkyl groups, or those with deuterium, -F, cyano, or C1-C groups. 60 Alkyl, or C6-C 60 Aryl-substituted C6-C 60 Aryl.

[0120] In one or more embodiments, the first compound may satisfy condition 2.

[0121] For example, the first compound may include a thermally activated delayed fluorescent emitter represented by the following formula 201 or 202:

[0122]

[0123] In Equation 201,

[0124] X 201 To X 203 Each can be B or N independently.

[0125] A 201 To A 205 Each can be independently substituted or unsubstituted C5-C. 30 The carbocyclic group is either substituted or unsubstituted C1-C. 30 Heterocyclic groups,

[0126] L 201 To L 205 Each can be an independent single bond, unsubstituted, or bound by at least one R. 200a Replacement C5-C 30 The carbocyclic group, or the unsubstituted group or the group with at least one R 200a Replacement C1-C 30 Heterocyclic groups, a201 to a205, can each be an integer from 1 to 5 independently.

[0127] R 201 To R 205 and R 200a Each group can independently be hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -N(Q 51 (Q) 52 ), -Si(Q 53 (Q) 54 (Q) 55 -Ge(Q) 53 (Q) 54 (Q) 55 -B(Q) 56 (Q) 57 -P(=O)(Q) 58 (Q) 59 -P(=S)(Q) 58 (Q) 59 ), or -P(Q 58 (Q) 59 ),

[0128] b201 to b205 can each be an integer from 0 to 10 independently, where when b201 is 2 or greater, two or more R... 201 They can be the same or different from each other. When b202 is 2 or greater, two or more R... 202 They can be the same or different from each other. When b203 is 2 or greater, two or more R... 203 They can be the same or different from each other, and when b204 is 2 or greater, two or more R... 204 They can be the same or different from each other, and when b205 is 2 or greater, two or more R... 205 They can be the same or different from each other.

[0129]

[0130]

[0131] In Equation 202,

[0132] A 211 C5-C can be substituted or unsubstituted. 30 The carbocyclic group is either substituted or unsubstituted C1-C. 30 Heterocyclic groups,

[0133] W 211 It can be an acceptor group.

[0134] D 211 It can be a donor group.

[0135] m211 can be an integer from 1 to 4, and n211 can be an integer from 1 to 4;

[0136] R 211 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -N(Q 51(Q) 52 ), -Si(Q 53 (Q) 54 (Q) 55 -Ge(Q) 53 (Q) 54 (Q) 55 -B(Q) 56 (Q) 57 -P(=O)(Q) 58 (Q) 59 -P(=S)(Q) 58 (Q) 59 ), or -P(Q 58 (Q) 59 ), and multiple R 211 They can be optionally combined to form substituted or unsubstituted C5-C. 30 The carbocyclic group is either substituted or unsubstituted C1-C. 30 Heterocyclic groups,

[0137] Replacement C5-C 30 Carbocyclic groups, substituted C1-C 30 Heterocyclic groups, substituted C1-C 60 Alkyl, substituted C2-C 60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60 Alkoxy, substituted C1-C 60 Alkylthio, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C7-C 60 Alkyl aryl, substituted C7-C 60 Arylalkyl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthio, substituted C1-C 60 heteroaryl, substituted C2-C 60 Alkyl heteroaryl, substituted C2-C 60 Heteroarylalkyl, substituted C1-C 60 Heteroaryl groups, substituted C1-C 60 The substituents of heteroaryl thio groups, substituted monovalent non-aromatic fused polycyclic groups, and substituted monovalent non-aromatic fused heterocyclic groups are:

[0138] Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, or C1-C 60 Alkoxy;

[0139] Each of the following C1-C is replaced: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -N(Q 61 (Q) 62 ), -Si(Q 63 (Q) 64 (Q) 65 -Ge(Q) 63 (Q) 64 (Q) 65 -B(Q) 66 (Q) 67 -P(=O)(Q) 68 (Q) 69 -P(=S)(Q) 68 (Q) 69 -P(Q) 68 (Q) 69 ), or combinations thereof;

[0140] Each of the following C3-Cs is either not substituted or is substituted by at least one of the following: 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, or monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid groups or their salts, sulfonic acid groups or their salts, phosphate groups or their salts, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C1-C 60 Alkylthio, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C7-C 60 Alkyl aryl, C7-C 60 Arylalkyl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C2-C 60 Alkyl heteroaryl, C2-C 60 Heteroarylalkyl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -N(Q) 71 (Q) 72 ), -Si(Q 73 (Q) 74 (Q) 75 -Ge(Q) 73 (Q) 74 (Q) 75 -B(Q) 76 (Q) 77 -P(=O)(Q) 78 (Q) 79 -P(=S)(Q) 78 (Q) 79 -P(Q) 78 (Q) 79 ), or combinations thereof;

[0141] -N(Q 81 (Q) 82 ), -Si(Q 83 (Q) 84 (Q) 85 -Ge(Q) 83 (Q) 84 (Q) 85 -B(Q) 86 (Q) 87 -P(=O)(Q) 88 (Q) 89 -P(=S)(Q) 88 (Q) 89 ), or -P(Q 88 (Q) 89 );or

[0142] Its combination,

[0143] Q 51 -Q 59 Q 61 -Q 69 Q 71 -Q 79 and Q 81 -Q 89 Each of the following is independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; amidine; hydrazine; hydrazone; carboxylic acid group or its salt; sulfonic acid group or its salt; phosphate group or its salt; unsubstituted or deuterated, C1-C 60 Alkyl, C6-C 60 aryl, or combined substituted C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkyne group; C1-C 60 Alkoxy group; C1-C 60 Alkylthio, C3-C 10 cycloalkyl; C1-C 10 Heterocyclic alkyl; C3-C 10 Cycloalkenyl; C1-C 10 Heterocyclic alkenyl groups; unsubstituted or deuterated, C1-C 60 Alkyl, C6-C 60 aryl, or combined substituted C6-C 60 Aryl; C6-C 60 Aryloxy group; C6-C 60 Arylthio; C1-C 60 heteroaryl; C2-C 60 Alkyl heteroaryl; C2-C 60 Heteroarylalkyl; C1-C 60 Heteroaryloxy group; C1-C 60Heteroaryl thio group; monovalent non-aromatic fused polycyclic group; or monovalent non-aromatic fused heterocyclic group.

[0144] For example, W 211 It can be a cyclic group of nitrogen without π electrons, whether substituted or unsubstituted, and

[0145] D 211 Possible forms:

[0146] -F, cyano, or cyclic groups containing nitrogen lacking π electrons;

[0147] C1-C, each substituted with at least one of -F or cyano groups. 60 Alkyl groups, cyclic groups containing nitrogen atoms lacking π electrons, or cyclic groups not containing nitrogen atoms lacking π electrons; or

[0148] A cyclic group containing a nitrogen lacking π electrons, substituted with at least one of the following: deuterium, C1-C 60 Alkyl groups, cyclic groups containing nitrogen atoms lacking π electrons, or cyclic groups not containing nitrogen atoms lacking π electrons.

[0149] The cyclic groups containing nitrogen without π-electron deficiency may be phenyl groups, heptadene groups, indene groups, naphthyl groups, azulene groups, indane groups, acenaphthene groups, fluorene groups, spirodifluorene groups, benzo[9,10]phenanthrene groups, dibenzo[9,10]fluorene groups, phenanthracene groups, anthracene groups, fluoranthracene groups, benzo[9,10]phenanthrene groups, pyrene groups, etc. Groups, tetraphenyl groups, furan groups, perylene groups, pentaphenyl groups, hexaphenyl groups, pentanfen groups, rutin groups, halophenyl groups, ovalphenyl groups, pyrrole groups, isoindole groups, indole groups, furan groups, thiophene groups, benzofuran groups, benzothiophene groups, benzocarbazole groups, dibenzocarbazole groups, dibenzofuran groups, dibenzothiophene groups, dibenzothiophene sulfone groups, carbazole groups, dibenzothiorrole groups, indolecarbazole groups, indolecarbazole groups, benzofuran-carbazole groups, benzothiophene-carbazole groups, triindole-phenyl groups, or fused ring groups with two or more cyclic groups that do not contain π-electron-deficient nitrogen atoms, and

[0150] The cyclic group containing π-electron-deficient nitrogen may be a cyclic group having at least one -N= portion, and may be, for example, an imidazole group, a pyrazole group, a thiazole group, an isothiazole group, etc. azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, phthalazine group, naphthidine group, quinoxaline group, quinazoline group, cyclophosphine group, phenanthridine group, acridine group, phenanthrene-rhein group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, isobenzox azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, azacarbazole group, and benzimidazolebenzimidazole group; or a fused ring group in which two or more cyclic groups containing π-electron-deficient nitrogen atoms are fused together.

[0151] The first compound can be understood by referring to the description of sensitizers provided herein.

[0152] The second compound in the composition

[0153] The second compound includes compounds represented by Formula 1:

[0154]

[0155] In Formula 1, ring A1 is a fused ring group in which three or more cyclic groups are fused together, and the cyclic groups may be C5-C6. 30 Carbocyclic groups or C1-C 30 Heterocyclic groups.

[0156] In one or more embodiments, ring A1 in Formula 1 may be an anthracene group, a phenatene group, a phenanthrene group, a tetraphenyl (benzo[b]anthracene) group, a pyrene group, etc. Groups, benzo[9,10]phenanthrene groups, pentaphenyl groups, perylene groups, fluoranthene groups, fluorene groups, acridine groups, phenanthridine groups, phenazine groups, phenanthrene groups Azine group, phenothiazine group, thallium group, carbazole group, dibenzofuran group, or dibenzothiophene group.

[0157] For example, ring A1 can be an anthracene group, a pyrene group, etc. Group, or perylene group.

[0158] In Equation 1, L1 can be a single bond, unsubstituted, or bonded by at least one R. 10a Replacement C5-C 30 The carbocyclic group, or the unsubstituted group or the group with at least one R 10a Replacement C1-C 30 Heterocyclic groups.

[0159] In one or more embodiments, L1 in Formula 1 may be either unreplaced or replaced by at least one R as provided herein. 10a Substituted phenyl groups, heptadene groups, indene groups, naphthyl groups, azazine groups, indane groups, acenaphthene groups, fluorene groups, spirodifluorene groups, benzo[9,10]phenanthrene groups, dibenzo[9,10]fluorene groups, phenanthracene groups, anthracene groups, fluoranthracene groups, benzo[9,10]phenanthrene groups, pyrene groups, Groups, tetraphenyl group, styrene group, perylene group, pentaphenyl group, hexaphenyl group, pentaphenyl group, rutin group, halophenyl group, ovoid phenyl group, pyrrole group, furan group, thiophene group, isoindole group, indole group, indole group, indene group, benzofuran group, benzothiophene group, benzothiorrole group, naphthopyrrole group, naphthofuran group, naphthothiophene group, naphthothiorrole group, benzocarbazole group, dibenzocarbazole group, dibenzofuran group, dibenzothiophene group, dibenzothiophene sulfone group, carbazole group, dibenzothiorrole group, indolecarbazole group, indolecarbazole group, benzofuran-carbazole group, benzothiophene-carbazole group, benzothiorrole-carbazole group, triindole-phenyl group, acridine group, dihydroacridine group, imidazole group, pyrazole group, thiazole group, isothiazole group, azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, benzo[a]isoquinoline group, phthalazine group, naphthidine group, quinoxaline group, benzo[a]quinoxaline group, quinazolinine group, phenanthridine group, phenanthroxaline group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, benzene azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, azacarbazole group, azadibenzofuran group, azadibenzothiophene group, azadibenzothiophene group, benzonaphthiophene group, indolephenanthrene group, benzofuranphenanthrene group, or benzothiophenephenanthrene group.

[0160] In Equation 1, a1 can be an integer from 1 to 5. When a1 is 2 or greater, two or more L1s can be the same or different from each other.

[0161] R1 in Formula 1 can be a group represented by Formula 2 or Formula 3:

[0162]

[0163] In Equation 1, b1 can be an integer from 3 to 10. For example, b1 can be an integer from 4 to 10. For example, b1 can be an integer from 3 to 8. For example, b1 can be an integer from 3 to 6.

[0164] When b1 is 2 or greater, two or more R1s can be the same or different from each other.

[0165] In equations 2 and 3, rings A3 and A4 can each be independently C5-C. 30 Carbocyclic groups or C1-C 30 Heterocyclic groups.

[0166] In one or more embodiments, ring A3 and ring A4 may each independently be a phenyl group, a heptadene group, an indene group, a naphthyl group, an azulene group, an indole group, an acenaphthene group, a fluorene group, a spirodifluorene group, a benzo[9,10]phenanthrene group, a dibenzo[9,10]fluorene group, a phenanthracene group, an anthracene group, a fluoranthracene group, a benzo[9,10]phenanthrene group, a pyrene group, Groups, tetraphenyl group, styrene group, perylene group, pentaphenyl group, hexaphenyl group, pentaphenyl group, rutin group, halophenyl group, ovoid phenyl group, pyrrole group, furan group, thiophene group, isoindole group, indole group, indole group, indene group, benzofuran group, benzothiophene group, benzothiorrole group, naphthopyrrole group, naphthofuran group, naphthothiophene group, naphthothiorrole group, benzocarbazole group, dibenzocarbazole group, dibenzofuran group, dibenzothiophene group, dibenzothiophene sulfone group, carbazole group, dibenzothiorrole group, indolecarbazole group, indolecarbazole group, benzofuran-carbazole group, benzothiophene-carbazole group, benzothiorrole-carbazole group, triindole-phenyl group, acridine group, dihydroacridine group, imidazole group, pyrazole group, thiazole group, isothiazole group, azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, benzo[a]isoquinoline group, phthalazine group, naphthidine group, quinoxaline group, benzo[a]quinoxaline group, quinazolinine group, phenanthridine group, phenanthroxaline group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, benzene azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, azacarbazole group, azadibenzofuran group, azadibenzothiophene group, azadibenzothiophene group, benzonaphthiophene group, indolephenanthrene group, benzofuranphenanthrene group, or benzothiophenephenanthrene group.

[0167] For example, ring A3 and ring A4 can each independently be a phenyl group, a naphthyl group, an anthracene group, a phenanthrene group, a benzo[9,10]phenanthrene group, a fluorene group, a dibenzothiophene group, a carbazole group, a dibenzofuran group, or a dibenzothiophene group.

[0168] In Equations 2 and 3, T3 and T4 can each be independently represented by a group of *-C(R5)(R6)(R7) or *-Si(R5)(R6)(R7), and c3 and c4 can each be independently integers from 0 to 10, wherein when c3 is 2 or greater, two or more T3s can be the same or different from each other, and when c4 is 2 or greater, two or more T4s can be the same or different from each other.

[0169] In one or more embodiments, the sum of c3 and c4 in equations 2 and 3 may be 1 or greater.

[0170] For example, the sum of c3 and c4 in equations 2 and 3 can be an integer from 1 to 4.

[0171] T in Equation 3 11 It can be a single bond, O, S, N(R8), C(R8)(R9), or Si(R8)(R9). For example, T 11 It can be a single key.

[0172] R2-R9 and R in equations 1 to 3 10a Each group can independently be hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), -P(=O)(Q8)(Q9), -P(=S)(Q8)(Q9), or -P(Q8)(Q9).

[0173] In equations 1 to 3, b2-b4 can each be an integer from 0 to 10 independently, where when b2 is 2 or greater, two or more R2s can be the same or different from each other, when b3 is 2 or greater, two or more R3s can be the same or different from each other, and when b4 is 2 or greater, two or more R4s can be the same or different from each other.

[0174] In one or more embodiments, R5-R7 in Formulas 2 and 3 may each be independently -CH3, -CD3, -CD2H, -CDH2, phenyl, or a group represented by one of Formulas 9-1 to 9-19:

[0175]

[0176] In Equations 9-1 to 9-19, * indicates a binding site with an adjacent atom.

[0177] In one or more embodiments, the compound represented by Formula 1 may be represented by one of Formulas 1-1 to 1-4:

[0178]

[0179]

[0180] Among them, in equations 1-1 to 1-4,

[0181] R 11 -R 22 Each can be independently derived from *-(L1) a1 -R1 represents the following groups: hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C. 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), -P(=O)(Q8)(Q9), -P(=S)(Q8)(Q9), or -P(Q8)(Q9),

[0182] R in Equations 1-1 and 1-4 11 -R 20 At least three can be independently derived from *-(L1). a1 -R1 represents the group,

[0183] R in Equations 1-2 and 1-3 11 -R 22 At least three can be independently derived from *-(L1). a1 -R1 represents the group, and

[0184] Replacement C1-C 60 Alkyl, substituted C2-C 60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60 Alkoxy, substituted C1-C 60 Alkylthio, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C7-C 60Alkyl aryl, substituted C7-C 60 Arylalkyl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthio, substituted C1-C 60 heteroaryl, substituted C2-C 60 Alkyl heteroaryl, substituted C2-C 60 Heteroarylalkyl, substituted C1-C 60 Heteroaryl groups, substituted C1-C 60 The substituents of heteroarylsulfo groups, substituted monovalent non-aromatic fused polycyclic groups, and substituted monovalent non-aromatic fused heterocyclic groups are the same as those described above.

[0185] For example,

[0186] i) R in equation 1-1 11 R 13 R 16 and R 18 Three or more can each be determined by *-(L1) a1 -R1 represents a group;

[0187] ii) R in Equation 1-2 12 R 15 R 18 and R 21 Three or more can each be determined by *-(L1) a1 -R1 represents a group;

[0188] iii) R in Equation 1-3 13 R 16 R 19 and R 22 Three or more can each be determined by *-(L1) a1 -R1 represents the group; and

[0189] iv) R in Equation 1-4 12 R 15 R 17 and R 20 Three or more can each be determined by *-(L1) a1 -R1 represents a group.

[0190] In one or more embodiments, R1 of Formula 1 may be a group represented by one of Formulas 2-1 to 2-42 and 3-1 to 3-36:

[0191]

[0192]

[0193]

[0194]

[0195]

[0196]

[0197] In equations 2-1 to 2-42 and 3-1 to 3-36,

[0198] T3, T4, T 11 R3 and R4 are the same as described above.

[0199] b32 and b42 can each be an integer between 0 and 2 independently.

[0200] b33 and b43 can each be an integer between 0 and 3 independently.

[0201] b34 and b44 can each be an integer between 0 and 4 independently.

[0202] b35 and b45 can each be an integer from 0 to 5 independently, and

[0203] * indicates a binding site with an adjacent atom.

[0204] In one or more embodiments, the second compound may be any one of compounds FD1 to FD12:

[0205]

[0206]

[0207] The second compound can emit blue light through a fused ring core having three or more cyclic groups fused together.

[0208] Since the second compound includes three or more R1 groups, the maximum spacing between the luminescent portion of the sensitizer and the luminescent portion of the dopant is guaranteed, suppressing dexter energy transfer.

[0209] Since the second compound may optionally contain one or more tert-butyl substituents or trimethylsilyl (TMS) substituents, maximum spacing between the luminescent units of the sensitizer and the luminescent units of the dopant can be guaranteed, suppressing dexter energy transfer.

[0210] The second compound can be understood by referring to the description of the dopant provided herein.

[0211] The third compound in the composition

[0212] The third compound includes bipolar compounds, electron transport compounds, hole transport compounds, or combinations thereof.

[0213] The electron transport compound includes at least one electron transport component.

[0214] The hole transport compound may not include the electron transport portion, and

[0215] The electron transport portion may be a cyano group, a cyclic group containing nitrogen lacking π electrons, or a group represented by one of the following formulas:

[0216]

[0217] In the above formula, *, *', and *" represent the binding sites with adjacent atoms.

[0218] In one or more embodiments, the electron transport compound may include at least one cyclic group of nitrogen lacking π electrons and at least one electron transport moiety.

[0219] The hole transport compound may include at least one cyclic group of nitrogen that does not lack π electrons, and may not include an electron transport moiety.

[0220] The electron transport portion may be a cyano group or a cyclic group containing nitrogen that is π-deficient.

[0221] For example, in one or more embodiments, the cyclic group containing π-electron-deficient nitrogen may be an imidazole group, a pyrazole group, a thiazole group, an isothiazole group, or a [missing information - likely a specific type of cyclic group]. azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, phthalazine group, naphthidine group, quinoxaline group, quinazoline group, cyclophosphine group, phenanthridine group, acridine group, phenanthrene-rhein group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, benzene azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, and azacarbazole group; or fused ring groups containing two or more cyclic groups of nitrogen lacking π electrons, and

[0222] The cyclic group of nitrogen without π-electron deficiency may be a phenyl group, a heptadene group, an indene group, a naphthyl group, an azinyl group, an indane group, an acenaphthene group, a fluorene group, a spirodifluorene group, a benzo[9,10]phenanthrene group, a dibenzo[9,10]fluorene group, a phenanthracene group, an anthracene group, a fluoranthracene group, a benzo[9,10]phenanthrene group, a pyrene group, etc. Groups, tetraphenyl groups, styrene groups, perylene groups, pentaphenyl groups, hexaphenyl groups, pentophenone groups, rubidium groups, halophenyl groups, ovalphenyl groups, pyrrole groups, isoindole groups, indole groups, furan groups, thiophene groups, benzofuran groups, benzothiophene groups, benzocarbazole groups, dibenzocarbazole groups, dibenzofuran groups, dibenzothiophene groups, dibenzothiophene sulfone groups, carbazole groups, dibenzothiorrole groups, indolecarbazole groups, indolecarbazole groups, benzofuran-carbazole groups, benzothiophene-carbazole groups, triindole-phenyl groups, or fused ring groups consisting of two or more cyclic groups that do not contain π-electron-deficient nitrogen atoms.

[0223] For example, the electron transport compound includes

[0224] i) at least one of a cyano, pyrimidine, pyrazine, and triazine group, and ii) a benzo[9,10]phenanthrene group, and

[0225] The hole-transporting compound may include a carbazole group.

[0226] The third compound can be understood by referring to the description of the subject provided herein.

[0227] Figure 1 Description

[0228] Figure 1 This is a schematic diagram of an organic light-emitting device 10 according to one or more embodiments. In the following text, reference will be made to... Figure 1 The structure and manufacturing method of an organic light-emitting device according to examples of this disclosure are described.

[0229] Figure 1 The organic light-emitting device 10 includes: a first electrode 11; a second electrode 19; and an organic layer 10A located between the first electrode 11 and the second electrode 19 and including an emission layer 15, wherein the organic layer 10A includes the composition described above.

[0230] In one or more embodiments, the composition may be included in the emitting layer 15.

[0231] In one or more embodiments, the emitter layer 15 may include a sensitizer, a dopant, and a host, wherein the sensitizer may include the first compound of the composition, the dopant may include the second compound of the composition, and the host may include at least one third compound of the composition.

[0232] In one or more embodiments, the emitting layer 15 may emit blue light.

[0233] In one or more embodiments, the organic layer 10A may include a hole transport region 12 located between the first electrode 11 and the emitter layer 15, and an electron transport region 17 located between the emitter layer 15 and the second electrode 19.

[0234] A substrate may be additionally placed below the first electrode 11 or above the second electrode 19. Any substrate available in the art for use in organic light-emitting devices may be used as the substrate, and the substrate may be a glass substrate or a transparent plastic substrate, each possessing excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and water resistance.

[0235] First electrode 11

[0236] In one or more embodiments, the first electrode 11 can be formed by depositing or sputtering a material for forming the first electrode 11 onto a substrate. The first electrode 11 may be an anode. The material used to form the first electrode 11 may be a material having a high work function to facilitate hole injection.

[0237] The first electrode 11 can be a reflective electrode, a semi-transparent electrode, or a transmissive electrode. When the first electrode 11 is a transmissive electrode, the material used to form the first electrode can be indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or a combination thereof, but the embodiments of this disclosure are not limited thereto. In one or more embodiments, when the first electrode 11 is a semi-transparent electrode or a reflective electrode, the material used to form the first electrode 11 can be magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or a combination thereof, but the embodiments of this disclosure are not limited thereto.

[0238] The first electrode 11 may have a single-layer structure or a multi-layer structure including two or more layers.

[0239] Launch layer 15

[0240] The emitter layer 15 may include a host, a dopant, and a sensitizer.

[0241] The emitting layer 15 can emit fluorescence. That is, the dopant can be a fluorescent material. The fluorescent emitting layer 15 is clearly different from the emitting layers in the related fields of phosphorescence.

[0242] It is generally known that triplet excitons remain in the excited state for extended periods, thus contributing to a reduction in the lifetime of organic light-emitting devices (OLEDs). However, according to this disclosure, the dopant is used to reduce the time that triplet excitons of the sensitizer remain in the excited state. Therefore, OLEDs incorporating the dopant can have an extended lifetime.

[0243] In one or more embodiments, the greater the number of triplet excitons in the sensitizer, the more excess energy accumulates in the sensitizer, leading to an increase in the number of thermal excitons. That is, the amount of triplet excitons in the sensitizer is proportional to the amount of thermal excitons. Thermal excitons break various chemical bonds of compounds included in the emitter layer 15 and / or compounds present at the boundaries of the emitter layer 15, causing the compounds to decompose. Therefore, the lifetime of the organic light-emitting device can be reduced. However, according to this disclosure, by using a dopant, the triplet excitons of the sensitizer can be rapidly converted into singlet excitons of the dopant, ultimately reducing the amount of thermal excitons and increasing the lifetime of the organic light-emitting device.

[0244] In this respect, “thermal excitons” can be generated or increased by: exciton-exciton annihilation due to the increased density of excitons in emitter layer 15, exciton-charge annihilation due to charge imbalance in emitter layer 15, and / or free radical ion pairs due to the transport of electrons between the host and the dopant.

[0245] Furthermore, since the dopant emits fluorescence, the resulting organic light-emitting device can have high color purity. For example, because the excited singlet excitons of the dopant rapidly transition to the ground state at room temperature, the accumulation of singlet excitons in the ground state can be prevented and the lifetime of the organic light-emitting device can be improved.

[0246] In one or more embodiments, singlet and triplet excitons are formed at the body in the emitter layer 15, and the singlet and triplet excitons formed in the body are transmitted through... Energy transfer (FRET) is transferred to the sensitizer and then to the dopant. To obtain high efficiency and long lifetime of the organic light-emitting device, the thermal excitons generated in the emitter layer 15 can be controlled, and for this purpose, optimization of energy transfer is required.

[0247] In one or more embodiments, when the sensitizer satisfies ΔE ST In a thermally activated delayed fluorescence (TADF) emitter with conditions ≤0.4 electron volts (eV), 25% of the singlet excitons formed in the host are transferred to the sensitizer via FRET, and the energy of 75% of the triplet excitons formed in the host is transferred to the singlet and triplet states of the sensitizer. From these energies, the energy transferred to the triplet state undergoes a reverse intersystem crossing to the singlet state, and then the singlet state energy of the sensitizer is transferred to the dopant via FRET.

[0248] Furthermore, in one or more embodiments, when the sensitizer is an organometallic compound containing at least one type of metal from the first row of the periodic table, the second row of the periodic table, or the third row of the periodic table, approximately 75% of the triplet excitons formed in the host are transferred to the sensitizer via Dexter energy transfer, and approximately 25% of the singlet excitons formed in the host are transferred to the singlet and triplet states of the sensitizer. The energy transferred to the singlet state undergoes intersystem crossing (ISC) to the triplet state, and then the triplet state energy of the sensitizer is transferred to the dopant via FRET.

[0249] Therefore, by transferring all singlet and triplet excitons generated in the main body of the emitter layer 15 to the dopant, an organic light-emitting device with improved efficiency can be obtained. Furthermore, since the energy loss of the organic light-emitting device can be significantly reduced, the lifetime characteristics of the organic light-emitting device can be improved.

[0250] The amount of the sensitizer in the emitting layer 15 can be from about 5% to about 50% by weight, based on the amount of the emitting layer. Within these ranges, efficient energy transfer in the emitting layer 15 can be achieved, and thus, an organic light-emitting device with high efficiency and long lifetime can be obtained.

[0251] The emitter layer 15 may be composed of the host, dopant, and sensitizer. That is, the emitter layer 15 may not further include materials other than the host, dopant, and sensitizer.

[0252] The thickness of the emission layer 15 can be approximately about For example, about about Within these ranges, excellent light emission characteristics can be obtained without a significant increase in driving voltage when the thickness of the emitting layer 15 is within these ranges.

[0253] The main body in the emission layer 15

[0254] The main body may include at least one third compound.

[0255] The subject may not include metal atoms or metal ions.

[0256] In one or more embodiments, the subject may include a single subject (i.e., a single-subject compound). When the subject includes a single subject, the single subject may be a bipolar subject, an electron transport subject, or a hole transport subject as described herein.

[0257] In one or more embodiments, the body may include a mixture of two or more different bodies. For example, the body may be a mixture of an electron transport body and a hole transport body, a mixture of two different types of electron transport bodies, or a mixture of two different types of hole transport bodies. The electron transport body and the hole transport body can be understood with reference to the relevant descriptions provided herein.

[0258] In one or more embodiments, the main body may include an electronic transmission main body containing at least one electronic transmission portion and a hole transmission main body without an electronic transmission portion.

[0259] The electron transport moiety used in this article may be a cyano group, a cyclic group containing nitrogen lacking π electrons, or a group represented by one of the following formulas:

[0260]

[0261] In the formula, *, *', and *" are each a binding site with an adjacent atom.

[0262] In one or more embodiments, the electron transport host of the emitter layer 15 may include at least one cyano group and a cyclic group containing nitrogen that is π-deficient.

[0263] In one or more embodiments, the electron transport host in the emission layer 15 may include at least one cyano group.

[0264] In one or more embodiments, the electron transport host in the emitter layer 15 may include at least one cyano group and at least one cyclic group containing a nitrogen group lacking π electrons.

[0265] In one or more embodiments, the main body may include an electron transport body and a hole transport body, wherein the electron transport body may include at least one cyclic group of nitrogen without π electrons and at least one electron transport portion, and the hole transport body may include a cyclic group of nitrogen without at least one π electron and may not include an electron transport portion.

[0266] In one or more embodiments, the electron transport host may be a compound represented by formula E-1, and

[0267] The hole transport agent may be a compound represented by formula H-1, but the embodiments of this disclosure are not limited thereto:

[0268] E-1

[0269] [Ar 301 ] xb11 -[(L 301 ) xb1 -R301 ] xb21

[0270] In E-1,

[0271] Ar 301 C5-C can be substituted or unsubstituted. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups,

[0272] xb11 can be 1, 2, or 3.

[0273] L 301 Each can be an independent single bond, a group represented by one of the following formulas, or a substituted or unsubstituted C5-C group. 60 Carbocyclic groups, or substituted or unsubstituted C1-C 60 Heterocyclic groups, *-P(=O)(Q 301 )-*'、*-P(=S)(Q 301 )-*', and in the following formula, *, *' and *" are each a binding site with an adjacent atom.

[0274]

[0275] xb1 can be an integer from 1 to 5.

[0276] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl, substituted or unsubstituted C2-C 60 alkenyl, substituted or unsubstituted C2-C 60 Alkyne, substituted or unsubstituted C1-C 60 Alkoxy, substituted or unsubstituted C1-C 60 Alkylthio, substituted or unsubstituted C3-C 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C7-C 60 Alkyl aryl, substituted or unsubstituted C7-C 60 arylalkyl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60heteroaryl, substituted or unsubstituted C2-C 60 Alkyl heteroaryl, substituted or unsubstituted C2-C 60 Heteroarylalkyl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 -S(=O)(Q) 301 -P(=O)(Q) 301 (Q) 302 -P(=S)(Q) 301 (Q) 302 ), or P(Q 301 (Q) 302 ),

[0277] xb21 can be an integer from 1 to 5.

[0278] Q 301 -Q 303 Each can be independently C1-C 10 Alkyl, C1-C 10 alkoxy, phenyl, biphenyl, terphenyl, or naphthyl, and

[0279] At least one of conditions A through C can be satisfied:

[0280] Condition A

[0281] Ar in E-1 301 L 301 and R 301 Each can independently include cyclic groups containing nitrogen lacking π electrons.

[0282] Condition B

[0283] L in E-1 301 It can be a group represented by one of the following groups:

[0284]

[0285] Condition C

[0286] R in E-1 301It can be cyano, -S(=O)2(Q) 301 -S(=O)(Q) 301 -P(=O)(Q) 301 (Q) 302 ), or -P(=S)(Q 301 (Q) 302 )

[0287] Formula H-1

[0288] Ar 401 -(L 401 ) xd1 -(Ar 402 ) xd11

[0289]

[0290] Among them, in equations H-1, 11, and 12,

[0291] L 401 Possible forms:

[0292] Single key; or

[0293] The phenyl group, which is not substituted or is substituted by at least one of the following: heptadene group, indene group, naphthyl group, azulene group, indane group, acenaphthene group, fluorene group, spirodifluorene group, benzo[9,10]phenanthrene group, dibenzo[9,10]fluorene group, phenanthracene group, anthracene group, fluoranthracene group, benzo[9,10]phenanthrene group, pyrene group, Groups, tetraphenyl group, styrene group, perylene group, pentaphenyl group, hexaphenyl group, pentanfen group, rutin group, halophenyl group, ovoid phenyl group, pyrrole group, isoindole group, indole group, furan group, thiophene group, benzofuran group, benzothiophene group, benzocarbazole group, dibenzocarbazole group, dibenzofuran group, dibenzothiophene group, dibenzothiophene sulfone group, carbazole group, dibenzothiorrole group, indolecarbazole group, indolecarbazole group, benzofuran-carbazole group, benzothiophene-carbazole group, or triindole-phenyl group: deuterium, C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiophene, benzo[9,10]phenanthryl, biphenyl, terphenyl, tetraphenyl, or -Si(Q) 401 (Q) 402 (Q) 403 ),

[0294] xd1 can be an integer from 1 to 10, where when xd1 is 2 or greater, two or more L 401 They can be the same or different from each other.

[0295] Ar 401 It can be a group represented by one of formulas 11 and 12.

[0296] Ar 402 It may be a group represented by one of formulas 11 and 12, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiopheneyl, biphenyl, terphenyl, or benzo[9,10]phenanthryl; or

[0297] Each of the following is substituted with at least one of the following: phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiopheneyl, biphenyl, terphenyl, or benzo[9,10]phenanthrene: deuterium, hydroxyl, amino, amidoyl, hydrazyl, hydrazone, carboxylic acid group or salt thereof, sulfonic acid group or salt thereof, phosphate group or salt thereof, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiopheneyl, biphenyl, terphenyl, or benzo[9,10]phenanthryl

[0298] CY 401 and CY 402 Each group can independently be a phenyl group, naphthyl group, fluorene group, carbazole group, benzo[a]carbazole group, indole[a]carbazole group, dibenzo[a]furan group, dibenzo[a]thiophene group, dibenzo[a]thiophene group, benzo[a]naphtho[a]furan group, benzo[a]naphtho[a]thiophene group, or benzo[a]naphtho[a]thiophene group.

[0299] A 21 It can be a single bond, O, S, N(R) 51 ), C(R 51 (R) 52 ), or Si(R) 51 (R) 52 ),

[0300] A 22 It can be a single bond, O, S, N(R) 53 ), C(R 53 (R) 54 ), or Si(R) 53 (R) 54 ),

[0301] A in Equation 12 21 and A 22 At least one of them is not a single bond.

[0302] R 51 -R 54 R 60 and R 70 Each can be independently:

[0303] Hydrogen, deuterium, hydroxyl, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl, or C1-C 20 Alkoxy;

[0304] Each of the C1-Cs is replaced by at least one of the following: 20 Alkyl or C1-C 20 Alkoxy groups: deuterium, hydroxyl, amino, amidoyl, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, or dibenzothiopheneyl;

[0305] Cyclic groups that do not contain π-electron-deficient nitrogen (e.g., phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiopheneyl, biphenyl, terphenyl, or benzo[9,10]phenanthryl);

[0306] Each of the following cyclic groups, each substituted with at least one of the following nitrogen-free groups (e.g., phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiopheneyl, biphenyl, terphenyl, or benzo[9,10]phenanthrene): deuterium, hydroxyl, amino, amidoyl, hydrazyl, hydrazone, carboxylic acid group or salt thereof, sulfonic acid group or salt thereof, phosphate group or salt thereof, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiophene, or biphenyl; or

[0307] -Si(Q 404 (Q) 405 (Q) 406 ),

[0308] e1 and e2 can each be an integer between 0 and 10 independently.

[0309] Q 401 -Q 406 Each of these groups can be independently hydrogen, deuterium, hydroxyl, amino, amidoyl, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiopheneyl, biphenyl, terphenyl, or benzo[9,10]phenanthrene, and

[0310] * indicates a binding site with an adjacent atom.

[0311] In one or more embodiments, Ar in formula E-1 301 and L 301Each can be independently a phenyl group, naphthyl group, fluorene group, spirodifluorene group, benzo[9,10]fluorene group, dibenzo[9,10]fluorene group, phenanthracene group, anthracene group, fluoranthracene group, benzo[9,10]phenanthracene group, pyrene group, etc., which are either unsubstituted or substituted by at least one of the following groups: Groups, tetraphenyl group, styrene group, perylene group, pentyrene group, indene-anthracene group, dibenzofuran group, dibenzothiophene group, imidazole group, pyrazole group, thiazole group, isothiazole group, azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, phthalazine group, naphthidine group, quinoxaline group, quinazoline group, cyclophosphine group, phenanthridine group, acridine group, phenanthrene-rhein group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, isobenzox azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, or azacarbazole group: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, cyano-containing naphthyl, pyridyl, phenylpyridyl, diphenylpyridyl, biphenylpyridyl, di(biphenyl)pyridyl, pyrazinyl, phenylpyrazinyl, diphenylpyrazinyl, biphenylpyrazinyl, di(biphenyl)pyrazinyl, pyridazinyl, phenylpyridazinyl, diphenylpyridazinyl, biphenylpyridazinyl, di(biphenyl)pyridazinyl, pyrimidinyl, phenylpyrimidinyl, diphenylpyrimidinyl, biphenylpyrimidinyl, di(biphenyl)pyrimidinyl, triazinyl, phenyltriazinyl, diphenyltriazinyl, biphenyltriazinyl, di(biphenyl)triazinyl, -Si(Q) 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 -P(Q) 31 (Q) 32 -P(=O)(Q) 31 (Q) 32 ), or -P(=S)(Q 31 (Q) 32 ),

[0312] The quantity of L is xb1 301 At least one of them may be an imidazole group, a pyrazole group, a thiazole group, an isothiazole group, or a group that is not substituted or is substituted by at least one of the following: azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, phthalazine group, naphthidine group, quinoxaline group, quinazoline group, cyclophosphine group, phenanthridine group, acridine group, phenanthrene-rhein group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, isobenzox azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, or azacarbazole group: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, cyano-containing naphthyl, pyridyl, phenylpyridyl, diphenylpyridyl, biphenylpyridyl, di(biphenyl)pyridyl, pyrazinyl, phenylpyrazinyl, diphenylpyrazinyl, biphenylpyrazinyl, di(biphenyl)pyrazinyl, pyridazinyl, phenylpyridazinyl, diphenylpyridazinyl, biphenylpyridazinyl, di(biphenyl)pyridazinyl, pyrimidinyl, phenylpyrimidinyl, diphenylpyrimidinyl, biphenylpyrimidinyl, di(biphenyl)pyrimidinyl, triazinyl, phenyltriazinyl, diphenyltriazinyl, biphenyltriazinyl, di(biphenyl)triazinyl, -Si(Q) 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ), or -P(=O)(Q 31 (Q) 32 ),and

[0313] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, phenyl, biphenyl, terphenyl, tetraphenyl, naphthyl, cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, cyano-containing tetraphenyl, cyano-containing naphthyl, pyridyl, phenylpyridyl, diphenylpyridyl, biphenylpyridyl, di(biphenyl)pyridyl, pyrazinyl, phenylpyrazinyl, diphenylpyrazinyl, biphenylpyrazinyl, di(biphenyl)pyrazinyl, pyridazinyl, phenylpyridazinyl, diphenylpyridazinyl, biphenylpyridazinyl, di(biphenyl)pyridazinyl, pyrimidinyl, phenylpyrimidinyl, diphenylpyrimidinyl, biphenylpyrimidinyl, di(biphenyl)pyrimidinyl, triazinyl, phenyltriazinyl, diphenyltriazinyl, biphenyltriazinyl, di(biphenyl)triazinyl, -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 ),

[0314] Q 31 -Q 33 Each can be independently C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, or naphthyl, but the embodiments described herein are not limited to these.

[0315] In one or more embodiments,

[0316] Ar 301 It may be a phenyl group, naphthyl group, fluorene group, spirodifluorene group, benzo[9,10]fluorene group, dibenzo[9,10]fluorene group, phenanthracene group, anthracene group, fluoranthracene group, benzo[9,10]phenanthracene group, pyrene group, etc., which are either unsubstituted or substituted with at least one of the following groups. Groups, tetraphenyl group, styrene group, perylene group, pentylenetetrazol group, indene-anthracene group, dibenzofuran group, or dibenzothiophene group: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, cyano-containing naphthyl, pyridyl, phenylpyridyl, diphenylpyridyl, biphenylpyridyl, di(biphenyl)pyridyl, pyrazinyl, phenylpyrazinyl, diphenylpyrazinyl, biphenylpyrazinyl, di(biphenyl)pyrazinyl, pyridazinyl, phenylpyridazinyl, diphenylpyridazinyl, biphenylpyridazinyl, di(biphenyl)pyridazinyl, pyrimidinyl, phenylpyrimidinyl, diphenylpyrimidinyl, biphenylpyrimidinyl, di(biphenyl)pyrimidinyl, triazinyl, phenyltriazinyl, diphenyltriazinyl, biphenyltriazinyl, di(biphenyl)triazinyl, -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 );or

[0317] A group represented by one of formulas 5-1 to 5-3 or 6-1 to 6-33, and

[0318] L 301 It can be a group represented by one of formulas 5-1 to 5-3 and 6-1 to 6-33:

[0319]

[0320]

[0321] Among them, in equations 5-1 to 5-3 and 6-1 to 6-33,

[0322] Z1 can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, cyano-containing naphthyl, pyridyl, phenylpyridyl, diphenylpyridyl, biphenylpyridyl, di(biphenyl)pyridyl, pyrazinyl, phenylpyrazinyl, diphenylpyrazinyl, biphenylpyrazinyl, di(biphenyl)pyrazinyl, pyridazinyl, phenylpyridazinyl, diphenylpyridazinyl, biphenylpyridazinyl, di(biphenyl)pyridazinyl, pyrimidinyl, phenylpyrimidinyl, diphenylpyrimidinyl, biphenylpyrimidinyl, di(biphenyl)pyrimidinyl, triazinyl, phenyltriazinyl, diphenyltriazinyl, biphenyltriazinyl, di(biphenyl)triazinyl, -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 ),

[0323] d4 can be 0, 1, 2, 3, or 4.

[0324] d3 can be 0, 1, 2, or 3.

[0325] d2 can be 0, 1, or 2, and

[0326] * and *' each represent the binding site with the adjacent atom.

[0327] Q 31 -Q 33 Same as described above.

[0328] In one or more embodiments, L 301 It can be a group represented by one of formulas 5-2, 5-3, or 6-8 to 6-33.

[0329] In one or more embodiments, R 301 It can be a cyano group or a group represented by one of formulas 7-1 to 7-18, and the number of Ar groups is xd11. 402 At least one of the groups may be represented by one of formulas 7-1 to 7-18, but the embodiments of this disclosure are not limited thereto:

[0330]

[0331] Among them, in equations 7-1 to 7-18,

[0332] xb41-xb44 can each be 0, 1, or 2, wherein xb41 in equation 7-10 is not 0, the sum of xb41 and xb42 in equations 7-11 to 7-13 is not 0, the sum of xb41, xb42, and xb43 in equations 7-14 to 7-16 is not 0, and the sum of xb41, xb42, xb43, and xb44 in equations 7-17 and 7-18 is not 0, and * indicates the binding site with adjacent atoms.

[0333] Two or more Ar in E-1 301 They can be the same or different from each other, two or more Ls 301 They may be the same or different from each other, and two or more L's in equation H-1 401 They may be the same or different from each other, and two or more Ar in formula H-1 402 They may be the same as or different from each other.

[0334] In one or more embodiments, the electron transport subject includes at least one of a cyano, pyrimidine, pyrazine, and triazine group, and ii) a benzo[9,10]phenanthrene group, and the hole transport subject may include a carbazole group.

[0335] In one or more embodiments, the electron transport host may include at least one cyano group.

[0336] The electron transport host may be, for example, a compound from group HE1 to HE7, but embodiments of this disclosure are not limited thereto:

[0337] Group HE1

[0338]

[0339]

[0340]

[0341]

[0342]

[0343]

[0344]

[0345]

[0346]

[0347]

[0348]

[0349]

[0350]

[0351]

[0352]

[0353]

[0354]

[0355]

[0356]

[0357]

[0358]

[0359]

[0360]

[0361] Group HE2

[0362]

[0363]

[0364]

[0365]

[0366]

[0367]

[0368]

[0369]

[0370]

[0371]

[0372]

[0373]

[0374]

[0375]

[0376]

[0377]

[0378]

[0379]

[0380]

[0381]

[0382]

[0383]

[0384]

[0385]

[0386]

[0387]

[0388]

[0389]

[0390]

[0391]

[0392]

[0393]

[0394]

[0395]

[0396] Group HE3

[0397]

[0398]

[0399]

[0400]

[0401]

[0402]

[0403]

[0404]

[0405]

[0406]

[0407]

[0408]

[0409]

[0410]

[0411]

[0412]

[0413]

[0414]

[0415]

[0416]

[0417]

[0418] Group HE4

[0419]

[0420]

[0421]

[0422]

[0423]

[0424]

[0425]

[0426] Group HE5

[0427]

[0428]

[0429]

[0430]

[0431]

[0432]

[0433] Group HE6

[0434]

[0435]

[0436]

[0437]

[0438]

[0439]

[0440]

[0441]

[0442]

[0443] Group HE7

[0444]

[0445]

[0446]

[0447]

[0448]

[0449]

[0450]

[0451] In one or more embodiments, the hole transport host may be one of compounds H-H1 to H-H1O4, but the embodiments of this disclosure are not limited to this:

[0452]

[0453]

[0454]

[0455]

[0456]

[0457]

[0458] In one or more embodiments, the bipolar host may be a compound from group HEH1, but embodiments of this disclosure are not limited thereto:

[0459] Group HEH1

[0460]

[0461]

[0462]

[0463]

[0464]

[0465]

[0466]

[0467]

[0468]

[0469]

[0470]

[0471]

[0472]

[0473]

[0474] Among compounds 1 to 432,

[0475] Ph can be phenyl.

[0476] When the main body is a mixture of electron transport and hole transport, the weight ratio of the electron transport to the hole transport can be approximately 1:9 to approximately 9:1, for example, approximately 2:8 to approximately 8:2, for example, approximately 4:6 to approximately 6:4, for example, approximately 5:5. When the weight ratio of the electron transport to the hole transport satisfies the above range, a balance between hole and electron transport can be achieved in the emitter layer 15.

[0477] dopants in emitter layer 15

[0478] The dopant may include the second compound.

[0479] Because the dopant emits fluorescence, organic light-emitting devices according to one or more embodiments of this disclosure are clearly distinguished from organic light-emitting devices containing phosphorescent compounds.

[0480] In one or more embodiments, the dopant may be free of metal atoms.

[0481] In one or more embodiments, in addition to the second compound, the dopant may further include compounds that are fused polycyclic compounds or styrene compounds.

[0482] For example, the dopant may include one of the following: a naphthalene-containing core, a fluorene-containing core, a spirodifluorene-containing core, a benzo[9,10]fluorene-containing core, a dibenzo[9,10]fluorene-containing core, a phenanthrene-containing core, an anthracene-containing core, a fluoranthene-containing core, a benzo[9,10]phenanthrene-containing core, a pyrene-containing core, or a dopant containing... The core may contain benzo[b]anthracene, a benzo[b]anthracene, a perylene, a pentylenetene, an indene-anthracene, a bianthracite, or a core represented by any one of formulas 501-1 to 501-18, but the embodiments of this disclosure are not limited thereto:

[0483]

[0484] In one or more embodiments, the dopant may include a compound containing styrene-based amines or a compound containing styrene-based carbazole, but the embodiments of this disclosure are not limited thereto.

[0485] In one or more embodiments, the dopant may include a compound represented by formula 501:

[0486]

[0487] In Equation 501,

[0488] Ar 501 Possible forms:

[0489] Naphthalene group, fluorene group, spirodifluorene group, benzo[9,10]fluorene group, dibenzo[9,10]fluorene group, phenanthrene group, anthracene group, fluoranthene group, benzo[9,10]phenanthrene group, pyrene group, Group, tetraphenyl group, fusine group, perylene group, pentylenetene group, indene-anthracene group, bianthracite group, or a group represented by any one of formulas 501-1 to 501-18; or

[0490] Each of the following groups is substituted with at least one of the following: a naphthyl group, a fluorene group, a spirodifluorene group, a benzo[9,10]fluorene group, a dibenzo[9,10]fluorene group, a phenanthrene group, an anthracene group, a fluoranthene group, a benzo[9,10]phenanthrene group, a pyrene group, Group, tetraphenyl group, furan group, perylene group, pentofen group, indaneanthracene group, bianthracite group, or a group represented by any one of formulas 501-1 to 501-18: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C1-C 60 Alkylthio, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C7-C 60 Alkyl aryl, C7-C 60 Arylalkyl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C2-C 60 Alkyl heteroaryl, C2-C 60 Heteroarylalkyl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, or -Si(Q) 501 (Q) 502 (Q) 503 (where Q) 501 -Q 503 Each can be independently hydrogen, C1-C 60 Alkyl, C1-C 60 Alkoxy, C6-C 60 Aryl, C7-C60 Alkyl aryl, C7-C 60 Arylalkyl, C6-C 60 aryloxy group, C1-C 60 heteroaryl, C2-C 60 Alkyl heteroaryl, C2-C 60 Heteroarylalkyl, C1-C 60 Heteroaryloxy groups, monovalent non-aromatic fused polycyclic groups, or monovalent non-aromatic fused heterocyclic groups)

[0491] L 501 -L 503 Each can be independently substituted or unsubstituted C3-C. 10 Cycloalkylene, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, or substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0492] R 501 and R 502 Each can be independently:

[0493] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, pyrene alkyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazole group, triazinyl, dibenzofuranyl, or dibenzothiopheneyl; or

[0494] Each of the following is substituted with at least one of the following: phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, pyrene. alkyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazole, triazinyl, dibenzofuranyl, or dibenzothiopheneyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amido, hydrazyl, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, pyrene alkyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazoleyl, triazinyl, dibenzofuranyl, or dibenzothiopheneyl

[0495] xd1-xd3 can each be independently 0, 1, 2, or 3, and

[0496] xd4 can be 0, 1, 2, 3, 4, 5, or 6.

[0497] For example, in Equation 501,

[0498] Ar 501 Possible forms:

[0499] Naphthalene group, fluorene group, spirodifluorene group, benzo[9,10]fluorene group, dibenzo[9,10]fluorene group, phenanthrene group, anthracene group, fluoranthene group, benzo[9,10]phenanthrene group, pyrene group, Group, tetraphenyl group, fusinate group, perylene group, pentylenetene group, indene-anthracene group, bianthracite group, or a group formula represented by one of 501-1 to 501-18; or

[0500] Each of the following groups is substituted with at least one of the following: a naphthyl group, a fluorene group, a spirodifluorene group, a benzo[9,10]fluorene group, a dibenzo[9,10]fluorene group, a phenanthrene group, an anthracene group, a fluoranthene group, a benzo[9,10]phenanthrene group, a pyrene group, Group, tetraphenyl group, furan group, perylene group, pentofen group, indaneanthracene group, bianthracite group, or a group formula represented by one of 501-1 to 501-18: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, dibenzofuranyl, dibenzothiopheneyl, carbazoleyl, pyridyl, pyrimidinyl, triazineyl, quinolinyl, isoquinolinyl, or -Si(Q) 501 (Q) 502 (Q) 503 (where Q) 501 -Q 503 Each can be independently hydrogen, C1-C 20 Alkyl, C1-C 20 (alkoxy, phenyl, biphenyl, terphenyl, or naphthyl)

[0501] L 501 -L 503 Regarding L 201 -L 209 The same as described.

[0502] xd1-xd3 can each be independently 0, 1, or 2, and

[0503] xd4 can be 0, 1, 2, or 3, but the implementation of this disclosure is not limited to these values.

[0504] In one or more embodiments, the dopant may include a compound represented by one of formulas 502-1 to 502-5:

[0505]

[0506]

[0507] Among them, in formulas 502-1 to 502-5,

[0508] X 51 It can be N or C-[(L 501 ) xd1 -R 501 ], X 52 It can be N or C-[(L 502 ) xd2 -R 502 ], X 53 It can be N or C-[(L 503 ) xd3 -R 503 ], X 54 It can be N or C-[(L 504 ) xd4 -R 504 ], X 55 It can be N or C-[(L 505 ) xd5 -R 505 ], X 56 It can be N or C-[(L 506 ) xd6 -R 506 ], X 57 It can be N or C-[(L 507 ) xd7 -R 507 ], and X 58 It can be N or C-[(L 508 ) xd8 -R 508 ],

[0509] L 501 -L 508 Each with respect to L in Equation 501 501 The same as described.

[0510] xd1-xd8 are each the same as those described for xd1 in Equation 501.

[0511] R501 To R 508 Each can be independently:

[0512] Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl, or C1-C 20 Alkoxy

[0513] Phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, pyrene alkyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazole group, triazinyl, dibenzofuranyl, or dibenzothiopheneyl; or

[0514] Each of the following is substituted with at least one of the following: phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, pyrene. alkyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazole, triazinyl, dibenzofuranyl, or dibenzothiopheneyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amido, hydrazyl, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[a]fluorenyl, dibenzo[a]fluorenyl, phenanthryl, anthraceneyl, pyrene alkyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, carbazoleyl, triazinyl, dibenzofuranyl, or dibenzothiopheneyl

[0515] xd11 and xd12 can each be an integer between 0 and 5 independently.

[0516] R 501 -R 504 The two can optionally be connected together to form a saturated or unsaturated ring, and

[0517] R 505 -R 508 Two of them can be optionally connected together to form a saturated or unsaturated ring.

[0518] The dopant may include, for example, at least one of compounds FD(1) to FD(16) or FD1 to FD18:

[0519]

[0520]

[0521]

[0522]

[0523] The amount of the dopant in the emitter layer may be from about 0.01% to about 15% by weight, depending on the amount of the emitter layer, but the embodiments of this disclosure are not limited thereto.

[0524] Sensitizer in emitter layer 15

[0525] The sensitizer may include the first compound.

[0526] In one or more embodiments, the sensitizer may be a compound from group I to VI of the group below, but embodiments of this disclosure are not limited thereto:

[0527] Group I

[0528]

[0529] Group II

[0530]

[0531]

[0532]

[0533]

[0534]

[0535]

[0536] Group III

[0537]

[0538]

[0539]

[0540]

[0541]

[0542]

[0543]

[0544]

[0545]

[0546]

[0547]

[0548]

[0549]

[0550]

[0551]

[0552]

[0553]

[0554]

[0555]

[0556]

[0557]

[0558] Group IV

[0559]

[0560] Group V

[0561] Compounds represented by the following formula A:

[0562] Formula A

[0563] (L 101 ) n101 -M 101 -(L 102 ) m101

[0564] in,

[0565] L in formula A 101 n101, M 101 L 102 m101 and m101 are the same as those described in Tables 1 to 3:

[0566] Table 1

[0567]

[0568]

[0569]

[0570] Table 2

[0571]

[0572]

[0573]

[0574] Table 3

[0575]

[0576]

[0577]

[0578] LM1-LM243, LFM1-LFM7, and LFP1-LFP7 in Tables 1 to 3 can be understood by referring to Equations 1-1 to 1-3 and Tables 4 to 6:

[0579]

[0580] Table 4

[0581]

[0582]

[0583]

[0584]

[0585]

[0586]

[0587]

[0588]

[0589]

[0590] Table 5

[0591]

[0592]

[0593] Table 6

[0594]

[0595] X1-X10 and Y1-Y18 in Tables 4 to 6 are the same as those described below, and Ph in the tables refers to phenyl:

[0596]

[0597]

[0598] Group VI

[0599]

[0600] In one or more embodiments, the sensitizer may include a thermally activated delayed fluorescent emitter represented by formula 201 or 202.

[0601] For example, A in Equation 202 211 It can be a cyclic group of nitrogen that is either substituted or unsubstituted and does not contain π-electron-deficient nitrogen.

[0602] In one or more embodiments, the cyclic group containing nitrogen without π-electron deficiency may be a phenyl group, a heptadene group, an indene group, a naphthyl group, an azulene group, an indane group, an acenaphthene group, a fluorene group, a spirodifluorene group, a benzo[9,10]phenanthrene group, a dibenzo[9,10]fluorene group, a phenanthracene group, a phenanthrene group, a phenanthrene group, a phenanthrene group, a pyrene group, etc. Groups, including tetraphenyl, styrene, perylene, pentaphenyl, hexaphenyl, pentaphenyl, fentanyl, rubidium benzoate, halophenyl, ovoid, pyrrole, isoindole, indole, furan, thiophene, benzofuran, benzothiophene, benzocarbazole, dibenzocarbazole, dibenzofuran, dibenzothiophene, dibenzothiophene sulfone, carbazole, dibenzothiophene, indole, indo-carbazole, benzofuran-carbazole, benzothiophene-carbazole, triindo-phenyl; or fused-ring groups consisting of two or more cyclic groups that do not contain π-electron-deficient nitrogen, but the embodiments of this disclosure are not limited thereto.

[0603] For example, D in Equation 202 211 It can be: -F, cyano, or a cyclic group containing nitrogen lacking π electrons;

[0604] C1-C, each substituted with at least one of -F or cyano groups. 60 Alkyl groups, cyclic groups containing nitrogen atoms lacking π electrons, or cyclic groups not containing nitrogen atoms lacking π electrons; or

[0605] A cyclic group containing a nitrogen lacking π electrons, substituted with at least one of the following: deuterium, C1-C 60Alkyl groups, cyclic groups containing nitrogen that lacks π electrons, or cyclic groups that do not contain nitrogen that lacks π electrons.

[0606] In one or more embodiments, the cyclic group of nitrogen that does not contain π-electron-deficient nitrogen is the same as that described herein.

[0607] As used herein, the term "cyclic group containing π-electron-deficient nitrogen" refers to a cyclic group having at least one -N= moiety, and may be, for example, an imidazole group, a pyrazole group, a thiazole group, an isothiazole group, etc. azole group, iso- Azolium group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, phthalazine group, naphthidine group, quinoxaline group, quinazoline group, cyclophosphine group, phenanthridine group, acridine group, phenanthrene-rhein group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, isobenzox azole group, triazole group, tetraazole group A diazole group, a triazine group, a thiadiazole group, an imidazopyridine group, an imidazopyrimidine group, an azacarbazole group, or a benzimidazole-benzimidazole group; or a fused ring group in which two or more cyclic groups containing π-electron-deficient nitrogen atoms are fused together.

[0608] In one or more embodiments, the sensitizer may be from one of groups VII to XIII, but embodiments of this disclosure are not limited thereto:

[0609] Group VII

[0610]

[0611]

[0612]

[0613]

[0614]

[0615] Group VIII

[0616]

[0617]

[0618] Group IX

[0619]

[0620]

[0621]

[0622]

[0623]

[0624]

[0625]

[0626]

[0627]

[0628]

[0629]

[0630]

[0631]

[0632]

[0633]

[0634]

[0635]

[0636]

[0637]

[0638]

[0639]

[0640]

[0641]

[0642]

[0643]

[0644]

[0645]

[0646]

[0647]

[0648]

[0649]

[0650]

[0651]

[0652] Group X

[0653]

[0654]

[0655]

[0656]

[0657]

[0658]

[0659]

[0660]

[0661]

[0662]

[0663]

[0664]

[0665]

[0666]

[0667]

[0668]

[0669]

[0670]

[0671]

[0672]

[0673]

[0674]

[0675]

[0676]

[0677]

[0678]

[0679]

[0680]

[0681]

[0682]

[0683]

[0684]

[0685]

[0686]

[0687]

[0688]

[0689]

[0690]

[0691]

[0692]

[0693]

[0694]

[0695]

[0696]

[0697]

[0698]

[0699]

[0700] Group XI

[0701]

[0702] Group XII

[0703]

[0704] Group XIII

[0705]

[0706] Hole transport region 12

[0707] The hole transport region 12 may be located between the first electrode 11 and the emission layer 15 of the organic light-emitting device 10.

[0708] The hole transport region 12 may have a single-layer structure or a multi-layer structure.

[0709] For example, the hole transport region 12 may have a hole injection layer, a hole transport layer, a hole injection layer / hole transport layer structure, a hole injection layer / first hole transport layer / second hole transport layer structure, a hole transport layer / intermediate layer structure, a hole injection layer / hole transport layer / intermediate layer structure, a hole transport layer / electron blocking layer structure, or a hole injection layer / hole transport layer / electron blocking layer structure, but the embodiments of the present disclosure are not limited thereto.

[0710] Hole transport region 12 may include any compound that has hole transport properties.

[0711] For example, hole transport region 12 may include a compound containing an amine.

[0712] In one or more embodiments, the hole transport region 12 may include at least one compound represented by formula 201 to a compound represented by formula 205, but embodiments of this disclosure are not limited thereto:

[0713]

[0714]

[0715] Among them, in equations 201 to 205,

[0716] L 201 -L 209 Each can be independently O, S, substituted or unsubstituted C5-C. 60Carbocyclic groups, or substituted or unsubstituted C1-C 60 Heterocyclic groups,

[0717] xa1-xa9 can each be an integer from 0 to 5 independently, and

[0718] R 201 -R 206 Each can be independently substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60 Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, or substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, wherein R 201 -R 206 The two adjacent groups can optionally be connected to each other via a single bond, a dimethylmethylene bond, or a diphenylmethylene bond.

[0719] For example, in one or more implementations,

[0720] L 201 To L 209 It can be any of the following groups that are not substituted or are substituted: phenyl group, heptadene group, indene group, naphthyl group, azulene group, indane group, acenaphthene group, fluorene group, spirodifluorene group, benzo[9,10]phenanthrene group, dibenzo[9,10]fluorene group, phenanthracene group, anthracene group, fluoranthracene group, benzo[9,10]phenanthrene group, pyrene group, etc. Groups, tetraphenyl group, styrene group, perylene group, pentaphenyl group, hexaphenyl group, pentanfen group, rutin group, halophenyl group, ovoid phenyl group, pyrrole group, isoindole group, indole group, furan group, thiophene group, benzofuran group, benzothiophene group, benzocarbazole group, dibenzocarbazole group, dibenzofuran group, dibenzothiophene group, dibenzothiophene sulfone group, carbazole group, dibenzothiorrole group, indolecarbazole group, indolecarbazole group, benzofuran-carbazole group, benzothiophene-carbazole group, and triindole-phenyl group: deuterium, C1-C 10 Alkyl, C1-C 10Alkoxy, phenyl, naphthyl, fluorenyl, carbazole, dibenzofuranyl, dibenzothiophene, benzo[9,10]phenanthryl, biphenyl, terphenyl, tetraphenyl, or -Si(Q) 11 (Q) 12 (Q) 13 ),

[0721] xa1-xa9 can each be independently 0, 1, or 2, and

[0722] R 201 -R 206 Each can be independently an unsubstituted or substituted phenyl, biphenyl, terphenyl, cyclopentadienyl, indene, naphthyl, azuleyl, heptadeninyl, indaneyl, acenaphthyl, fluorenyl, spirodifluorenyl, benzo[9,10]phenanthryl, pyrene, alkyl, tetraphenyl, furanyl, perylene, pentofenyl, hexaphenyl, pentaphenyl, rubidyl, halophenyl, ovoleyl, thiophenyl, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiophenolyl, pyridyl, indo-carbazoleyl, benzofuran-carbazoleyl, or benzothiophene-carbazoleyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, phenyl, biphenyl, terphenyl, C1-C 10 Alkyl-substituted phenyl, -F-substituted phenyl, cyclopentadienyl, indene, naphthyl, azuleyl, heptadienyl, indaneyl, acenaphthyl, fluorenyl, spirodifluorenyl, benzo[9,10]phenanthryl, dibenzo[9,10]fluorenyl, pyrene alkyl, tetraphenyl, furanyl, perylene, pentyranyl, hexaphenyl, pentaphenyl, rubidyl, halophenyl, ovoidyl, thiophene, furanyl, carbazoleyl, indoleyl, isoindoleyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazoleyl, dibenzocarbazoleyl, dibenzothiopheneyl, pyridyl, -Si(Q) 31 (Q) 32 (Q) 33 ), or -N(Q 31 (Q) 32 ),

[0723] Q 11 -Q 13 and Q 31 -Q 33Each can be independently C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, or naphthyl.

[0724] In one or more embodiments, the hole transport region 12 may include an amine compound containing carbazole.

[0725] In one or more embodiments, the hole transport region 12 may include amine compounds containing carbazole and amine compounds not containing carbazole.

[0726] The carbazole-containing amine compound may be, for example, a compound represented by formula 201 that includes a carbazole group and further includes at least one of a dibenzofuran group, a dibenzothiophene group, a fluorene group, a spirodifluorene group, an indobenzocarbazole group, an indobenzocarbazole group, a benzofuran-carbazole group, or a benzothiophene-carbazole group.

[0727] The carbazole-free amine compound may be, for example, a compound represented by formula 201 that does not include a carbazole group and includes at least one of a dibenzofuran group, a dibenzothiophene group, a fluorene group, a spirodifluorene group, an indobenzocarbazole group, an indobenzocarbazole group, a benzofuran-carbazole group, or a benzothiophene-carbazole group.

[0728] In one or more embodiments, the hole transport region 12 may include at least one compound represented by formula 201 or 202.

[0729] In one or more embodiments, the hole transport region 12 may include at least one compound represented by formula 201-1, 202-1, or 201-2, but embodiments of the present disclosure are not limited thereto:

[0730]

[0731] In equations 201-1, 202-1, and 201-2, L 201 -L 203 L 205 xa1-xa3, xa5, R 201 and R 202 Same as described in this article, and R 211 -R 213 Each of these groups can be independently represented as hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, or C1-C. 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, C1-C 10Alkyl-substituted phenyl, -F-substituted phenyl, naphthyl, fluorenyl, spirodifluorenyl, dimethylfluorenyl, diphenylfluorenyl, benzo[9,10]phenanthryl, thiopheneyl, furanyl, carbazolyl, indolyl, isoindolyl, benzofuranyl, benzothiopheneyl, dibenzofuranyl, dibenzothiopheneyl, benzocarbazolyl, dibenzocarbazolyl, dibenzothiopheneyl, or pyridyl.

[0732] For example, hole transport region 12 may include at least one of compounds HT1 to HT39, but embodiments of the present disclosure are not limited thereto.

[0733]

[0734]

[0735]

[0736] In one or more embodiments, the hole transport region 12 of the organic light-emitting device 10 may further include a p-dopant. When the hole transport region 12 further includes a p-dopant, the hole transport region 12 may have a substrate (e.g., at least one of the compounds represented by formulas 201 to 205) and a p-dopant included in the substrate. The p-dopant may be uniformly or non-uniformly doped in the hole transport region 12.

[0737] In one or more embodiments, the LUMO level of the p-doped agent may be -3.5 electron volts (eV) or less.

[0738] The p-doper may include at least one of quinone derivatives, metal oxides, or compounds containing a cyano group, but the embodiments of this disclosure are not limited thereto.

[0739] In one or more embodiments, the p-doper may include at least one of the following:

[0740] Quinone derivatives, such as tetracyanoquinone dimethyl (TCNQ), 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinone dimethyl (F4-TCNQ), or F6-TCNNQ;

[0741] Metal oxides, such as tungsten oxide or molybdenum oxide;

[0742] 1,4,5,8,9,12-Hexaazabenzo[9,10]phenanthrene-hexanitrile (HAT-CN); or

[0743] The compound represented by formula 221,

[0744] However, the implementation of this disclosure is not limited to this:

[0745]

[0746] In Equation 221,

[0747] R 221 -R 223 Each can be independently substituted or unsubstituted C3-C. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C1-C 60 Heteroaryl, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, or substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, and R 221 -R 223 At least one of them may have at least one cyano group, -F, -Cl, -Br, -I, or a C1-C group substituted with -F. 20 Alkyl groups, C1-C substituted with -Cl 20 Alkyl groups, C1-C substituted with -Br 20 Alkyl groups, or C1-C groups substituted with -I 20 Alkyl substituents.

[0748] Hole transport region 12 may have approximately about For example, about about The thickness, and the emission layer 15 may have approximately about For example, about about The thickness of the hole transport region 12 and the emitter layer 15 is within the ranges described above, and satisfactory hole transport characteristics and / or light emission characteristics can be obtained without a significant increase in driving voltage.

[0749] Electronic transmission area 17

[0750] The electron transport region 17 is positioned between the emitting layer 15 and the second electrode 19 of the organic light-emitting device 10.

[0751] The electron transport region 17 may have a single-layer structure or a multi-layer structure.

[0752] For example, the electron transport region 17 may have an electron transport layer, an electron transport layer / electron injection layer structure, a buffer layer / electron transport layer structure, a hole blocking layer / electron transport layer structure, a buffer layer / electron transport layer / electron injection layer structure, or a hole blocking layer / electron transport layer / electron injection layer structure, but the embodiments of this disclosure are not limited thereto. The electron transport region 17 may further include an electron control layer.

[0753] The electron transport region 17 may include known electron transport materials.

[0754] The electron transport region (e.g., a buffer layer, hole blocking layer, electron control layer, or electron transport layer within the electron transport region) may include a metal-free compound containing at least one cyclic group of nitrogen lacking π electrons. The cyclic group containing π-electron-deficient nitrogen is the same as described above.

[0755] In one or more embodiments, the electron transport region may include a compound represented by the following formula 601:

[0756] Formula 601

[0757] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21

[0758] In Equation 601,

[0759] Ar 601 and L 601 Each can be independently substituted or unsubstituted C5-C. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups,

[0760] xe11 can be 1, 2, or 3.

[0761] xe1 is an integer between 0 and 5.

[0762] R 601 C3-C can be substituted or unsubstituted. 10 cycloalkyl, substituted or unsubstituted C1-C 10 Heterocyclic alkyl, substituted or unsubstituted C3-C 10 Cycloalkenyl, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl, substituted or unsubstituted C6-C 60 aryl, substituted or unsubstituted C6-C 60 aryloxy, substituted or unsubstituted C6-C 60Arylthio, substituted or unsubstituted C1-C 60 heteroaryl, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted C1-C 60 Heteroaryl thiols, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 601 (Q) 602 (Q) 603 -C(=O)(Q) 601 -S(=O)2(Q) 601 -P(Q) 601 (Q) 602 ), or -P(=O)(Q 601 (Q) 602 ),

[0763] Q 601 -Q 603 Each can be independently C1-C 10 Alkyl, C1-C 10 alkoxy, phenyl, biphenyl, terphenyl, or naphthyl, and

[0764] xe21 is an integer from 1 to 5.

[0765] In one or more embodiments, the quantity of Ar is xe11 601 and R with a quantity of xe21 601 At least one of them may include the cyclic group containing nitrogen that is π-deficient.

[0766] In one or more embodiments, the ring Ar in Formula 601 601 and L 601 Each can be independently a phenyl group, naphthyl group, fluorene group, spirodifluorene group, benzo[9,10]fluorene group, dibenzo[9,10]fluorene group, phenanthracene group, anthracene group, fluoranthracene group, benzo[9,10]phenanthracene group, pyrene group, etc., which are either unsubstituted or substituted by at least one of the following groups: Groups, tetraphenyl group, styrene group, perylene group, pentyrene group, indene-anthracene group, dibenzofuran group, dibenzothiophene group, carbazole group, imidazole group, pyrazole group, thiazole group, isothiazole group, azole group, iso- Azolium group, pyridine group, pyrazine group, pyrimidine group, pyridazine group, indazole group, purine group, quinoline group, isoquinoline group, benzo[a]quinoline group, phthalazine group, naphthidine group, quinoxaline group, quinazoline group, cyclophosphine group, phenanthridine group, acridine group, phenanthrene-rhein group, phenazine group, benzimidazole group, isobenzothiazole group, benzo[a] azole group, isobenzox azole group, triazole group, tetraazole group Diazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, or azacarbazole group: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, -Si(Q) 31 (Q) 32 (Q) 33 -S(=O)2(Q) 31 ), or -P(=O)(Q 31 (Q) 32 ),

[0767] Q 31 -Q 33 Each can be independently C1-C 10 Alkyl, C1-C 10 Alkoxy, phenyl, biphenyl, terphenyl, or naphthyl.

[0768] When xe11 in equation 601 is 2 or greater, two or more Ar 601 They can be connected to each other via a single key.

[0769] In one or more embodiments, Ar in Formula 601 601 It can be an anthracene group.

[0770] In one or more embodiments, the compound represented by formula 601 may be represented by formula 601-1:

[0771]

[0772] In Equation 601-1,

[0773] 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 ), X 614 -X 616 At least one of them can be N.

[0774] L 611 -L 613 Each can be independently related to L 601 The same as described.

[0775] xe611-xe613 can each be independently identical to the description of xe1.

[0776] R 611 -R 613 Each can be independently related to R 601 The same as described, and

[0777] R 614 -R 616 Each can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amidine, hydrazine, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, or naphthyl.

[0778] In one or more embodiments, xe1 and xe611-xe613 in formulas 601 and 601-1 can each be independently 0, 1, or 2.

[0779] In one or more embodiments, R in formulas 601 and 601-1 601 and R 611 -R 613 Each can be independently an unsubstituted or substituted phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[9,10]fluorenyl, dibenzo[9,10]fluorenyl, phenanthryl, anthraceneyl, fluoranthyl, benzo[9,10]phenanthryl, pyrene, Peryl, pentylenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, azole group, iso azole group, thiadiazole group, Diazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxalinyl, quinazolinyl, cenolinyl, phenanthridineyl, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzo[] azole, isobenzo Azolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl, or azacarbazoyl: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amido, hydrazyl, hydrazone, C1-C 20 Alkyl, C1-C 20 Alkoxy, phenyl, biphenyl, terphenyl, naphthyl, fluorenyl, spirodifluorenyl, benzo[9,10]fluorenyl, dibenzo[9,10]fluorenyl, pyrene, Peryl, pentylenyl, hexaphenyl, pentaphenyl, thienyl, furanyl, carbazole, indole, isoindole, benzofuranyl, benzothiophene, dibenzofuranyl, dibenzothiophene, benzocarbazole, dibenzocarbazole, dibenzothiophene, pyridyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, azole group, iso azole group, thiadiazole group, Diazolyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, phthalazinyl, naphridinyl, quinoxalinyl, quinazolinyl, cenolinyl, phenanthridineyl, acridineyl, phenanthroxolinyl, phenazinyl, benzimidazolyl, isobenzothiazolyl, benzo[] azole, isobenzo Azolyl, triazolyl, tetrazolyl, imidazopyridyl, imidazopyrimidinyl, or azacarbazolyl; or

[0780] -S(=O)2(Q 601 ) or -P(=O)(Q 601 (Q) 602 ),

[0781] Q 601 and Q 602 Same as described above.

[0782] The electron transport region may include at least one of compounds ET1 to ET36, but embodiments of this disclosure are not limited thereto:

[0783]

[0784]

[0785]

[0786] In one or more embodiments, the electron transport region may include at least one of the following: 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), tris(8-hydroxyquinoline)aluminum (Alq3), di(2-methyl-8-hydroxyquinoline)-(1,1′-biphenyl-4-hydroxy)aluminum (BAlq), 3-(biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole (TAZ), or 4-(naphthyl-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (NTAZ):

[0787]

[0788] The thicknesses of the buffer layer, hole blocking layer, and electronic control layer can each be independently set to approximately [thickness value missing]. about For example, about about Within these ranges, when the thicknesses of the buffer layer, hole blocking layer, and electronic control layer are within these ranges, excellent hole blocking characteristics or excellent electronic control characteristics can be obtained without a significant increase in driving voltage.

[0789] The thickness of the electron transport layer can be approximately about For example, about about Within the range described above, when the thickness of the electron transport layer is within the range described above, the electron transport layer can have satisfactory electron transport characteristics without a significant increase in driving voltage.

[0790] In addition to the materials described above, the electron transport region 17 (e.g., the electron transport layer in the electron transport region) may further include a metal-containing material.

[0791] The metal-containing material may include at least one of an alkali metal complex or an alkaline earth metal complex. The alkali metal complex may include a metal ion as a Li, Na, K, Rb, or Cs ion, and the alkaline earth metal complex may include a metal ion as a Be, Mg, Ca, Sr, or Ba ion. The ligand coordinated to the metal ion of the alkali metal complex or the alkaline earth metal complex may be hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, or hydroxyphenyl. azole, hydroxyphenylthiazolium, hydroxydiphenyl The substances may be diazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazazole, bipyridine, phenanthroline, or cyclopentadiene, but the embodiments described herein are not limited thereto.

[0792] In one or more embodiments, the metal-containing material may include a Li complex. The Li complex may include, for example, compounds ET-D1 (lithium hydroxyquinoline, LiQ) or ET-D2.

[0793]

[0794] The electron transport region 17 may include an electron injection layer that facilitates the injection of electrons from the second electrode 19. The electron injection layer may be in direct contact with the second electrode 19.

[0795] The electron injection layer may have i) a single-layer structure comprising a single layer containing a single material, ii) a single-layer structure comprising a single layer containing multiple different materials, or iii) a multi-layer structure comprising multiple layers containing multiple different materials.

[0796] The electron injection layer may comprise an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or a combination thereof.

[0797] The alkali metal may be Li, Na, K, Rb, or Cs. In one or more embodiments, the alkali metal may be Li, Na, or Cs. In one or more embodiments, the alkali metal may be Li or Cs, but embodiments of the present disclosure are not limited thereto.

[0798] The alkaline earth metal may be Mg, Ca, Sr, or Ba.

[0799] The rare earth metal may be Sc, Y, Ce, Tb, Yb, or Gd.

[0800] The alkali metal compound, the alkaline earth metal compound, and the rare earth metal compound may be oxides or halides of said alkali metal, alkaline earth metal, or rare earth metal (for example, fluoride, chloride, bromide, or iodide).

[0801] The alkali metal compound may be an alkali metal oxide such as Li₂O, Cs₂O, or K₂O, or an alkali metal halide such as LiF, NaF, CsF, KF, LiI, NaI, CsI, or KI. In one or more embodiments, the alkali metal compound may be LiF, Li₂O, NaF, LiI, NaI, CsI, or KI, but embodiments of the present disclosure are not limited thereto.

[0802] The alkaline earth metal compound may be an alkaline earth metal oxide such as BaO, SrO, CaO, Ba x Sr 1-x O(0<x<1), or Ba x Ca 1-x O(0<x<1). In one or more embodiments, the alkaline earth metal compound may be BaO, SrO, or CaO, but embodiments of the present disclosure are not limited thereto.

[0803] The rare earth metal compound may be YbF₃, ScF₃, Sc₂O₃, Y₂O₃, Ce₂O₃, GdF₃, or TbF₃. In one or more embodiments, the rare earth metal compound may be YbF₃, ScF₃, TbF₃, YbI₃, ScI₃, or TbI₃, but embodiments of the present disclosure are not limited thereto.

[0804] The alkali metal complex, alkaline earth metal complex, and rare earth metal complex may include ions of alkali metals, alkaline earth metals, and / or rare earth metals as described above, and the ligands coordinated to the metal ions of the alkali metal complex, alkaline earth metal complex, and / or rare earth metal complex may be hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, or hydroxyphenyl. azole, hydroxyphenylthiazolium, hydroxydiphenyl The substances may be diazole, hydroxydiphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazazole, bipyridine, phenanthroline, or cyclopentadiene, but the embodiments described herein are not limited thereto.

[0805] The electron injection layer may be composed of alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or combinations thereof, as described above. In one or more embodiments, the electron injection layer may further include organic materials. When the electron injection layer further includes organic materials, the alkali metals, alkaline earth metals, rare earth metals, alkali metal compounds, alkaline earth metal compounds, rare earth metal compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or combinations thereof may be uniformly or non-uniformly dispersed in a matrix including the organic material.

[0806] The thickness of the electron injection layer can be approximately about and for example about about Within the range described above, when the thickness of the electron injection layer is within the range described above, the electron injection layer can have satisfactory electron injection characteristics without a significant increase in driving voltage.

[0807] Second electrode 19

[0808] The second electrode 19 is located on the organic layer 10A having such a structure. The second electrode 19 can be a cathode serving as an electron injection electrode, and in this respect, the material used to form the second electrode 19 can be a metal, alloy, conductive compound, or a combination thereof having a relatively low work function.

[0809] The second electrode 19 may include at least one of lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ITO, or IZO, but the embodiments of this disclosure are not limited thereto. The second electrode 19 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0810] The second electrode 19 may have a single-layer structure or a multi-layer structure including two or more layers.

[0811] The above text has already referred to Figure 1 Organic light-emitting devices have been described, but embodiments of the present disclosure are not limited thereto.

[0812] Figure 2 Description

[0813] Figure 2 This is a schematic cross-sectional view of an organic light-emitting device 100 according to another embodiment.

[0814] Figure 2 The organic light-emitting device 100 includes a first electrode 110, a second electrode 190 facing the first electrode 110, and a first light-emitting unit 151 and a second light-emitting unit 152 between the first electrode 110 and the second electrode 190. A charge-generating layer 141 is located between the first light-emitting unit 151 and the second light-emitting unit 152, and the charge-generating layer 141 may include an n-type charge-generating layer 141-N and a p-type charge-generating layer 141-P. The charge-generating layer 141 is a layer that generates and supplies charge to adjacent light-emitting units, and any known material can be used for it.

[0815] The first emitting unit 151 may include a first emitting layer 151-EM, and the second emitting unit 152 may include a second emitting layer 152-EM. The maximum emission wavelength of the light emitted from the first emitting unit 151 may be different from the maximum emission wavelength of the light emitted from the second emitting unit 152. For example, the mixed light emitted from the first emitting unit 151 and the light emitted from the second emitting unit 152 may be white light, but the embodiments of this disclosure are not limited thereto.

[0816] The hole transport region 120 is located between the first transmitting unit 151 and the first electrode 110, and the second transmitting unit 152 may include the first hole transport region 121 located on one side of the first electrode 110.

[0817] The electron transport region 170 is located between the second emission unit 152 and the second electrode 190, and the first emission unit 151 may include the first electron transport region 171 located between the charge generation layer 141 and the first emission layer 151-EM.

[0818] The first emission layer 151-EM comprises the composition described above.

[0819] For example, the first emitter layer 151-EM may include a host, a dopant, and a sensitizer, wherein the sensitizer may include the first compound of the composition, the dopant may include the second compound of the composition, and the host may include the third compound of the composition.

[0820] The second emitter layer 152-EM comprises the above composition.

[0821] For example, the second emitter layer 152-EM may include a host, a dopant, and a sensitizer, wherein the sensitizer may include the first compound of the composition, the dopant may include the second compound of the composition, and the host may include the third compound of the composition.

[0822] Figure 2 The first electrode 110 and the second electrode 190 shown can be used with respect to Figure 1 The first electrode 11 and the second electrode 19 shown are the same as those described.

[0823] Figure 2 The first emission layer 151-EM and the second emission layer 152-EM shown in the figure are respectively related to... Figure 1 The same as the emission layer 15 shown is described.

[0824] Figure 2 The hole transport region 120 and the first hole transport region 121 shown are each related to the hole transport region 120 and the first hole transport region 121 shown. Figure 1 The hole transport region 12 shown is the same as that described.

[0825] Figure 2 The electron transport region 170 and the first electron transport region 171 shown are each related to the electron transport region 170 and the first electron transport region 171 shown. Figure 1 The electron transport region 17 shown is the same as that described.

[0826] As mentioned above, refer to Figure 2 An organic light-emitting device has been described in which the first light-emitting unit 151 and the second light-emitting unit 152 each include an emitting layer comprising a host, a dopant, and a sensitizer. However, the organic light-emitting device may have many other forms. For example, Figure 2 One of the first light-emitting unit 151 and the second light-emitting unit 152 of the organic light-emitting device 100 may be replaced by any known light-emitting unit, or may include three or more light-emitting units.

[0827] Figure 3 Description

[0828] Figure 3 This is a schematic cross-sectional view of an organic light-emitting device 200 according to another embodiment.

[0829] The organic light-emitting device 200 includes a first electrode 210, a second electrode 290 facing the first electrode 210, and a first emission layer 251 and a second emission layer 252 stacked between the first electrode 210 and the second electrode 290.

[0830] The maximum emission wavelength of light emitted from the first emission layer 251 may be different from the maximum emission wavelength of light emitted from the second emission layer 252. For example, the mixed light emitted from the first emission layer 251 and the light emitted from the second emission layer 252 may be white light, but the embodiments of this disclosure are not limited thereto.

[0831] In one or more embodiments, the hole transport region 220 may be located between the first emitter layer 251 and the first electrode 210, and the electron transport region 270 may be located between the second emitter layer 252 and the second electrode 290.

[0832] The first emission layer 251 comprises the composition described above.

[0833] For example, the first emitter layer 251 may include a host, a dopant, and a sensitizer, wherein the sensitizer may include the first compound of the composition, the dopant may include the second compound of the composition, and the host may include the third compound of the composition.

[0834] The second emission layer 252 comprises the composition described above.

[0835] For example, the second emitter layer 252 may include a host, a dopant, and a sensitizer, wherein the sensitizer may include the first compound of the composition, the dopant may include the second compound of the composition, and the host may include the third compound of the composition.

[0836] Figure 3 The first electrode 210, hole transport region 220, and second electrode 290 shown are respectively related to... Figure 1 The first electrode 11, hole transport region 12, and second electrode 19 shown are the same as those described.

[0837] Figure 3 The first emission layer 251 and the second emission layer 252 shown are respectively related to... Figure 1 The same as the emission layer 15 shown is described.

[0838] Figure 3 The electron transport region 270 shown can be related to... Figure 1 The same as described in electron transport region 17.

[0839] As mentioned above, refer to Figure 3Organic light-emitting devices have been described in which the first emitting layer 251 and the second emitting layer 252 each include a host, a dopant, and a sensitizer. However, the organic light-emitting device may have many other forms. For example, Figure 3 One of the first emission layer 251 and the second emission layer 252 of the organic light-emitting device 200 may be replaced by any known emission layer, or an intermediate layer may be placed between adjacent emission layers.

[0840] Explanation of terms

[0841] As used in this article, the term "C1-C" 60 "Alkyl" refers to a straight-chain or branched monovalent group of a saturated aliphatic hydrocarbon having 1-60 carbon atoms, and examples include methyl, ethyl, propyl, isobutyl, sec-butyl, tert-butyl, pentyl, isopentyl, and hexyl. The term "C1-C" is used as in this document. 60 "alkylene" refers to a compound with C1-C2 atoms. 60 Divalent groups with the same structure as alkyl groups.

[0842] As used in this article, the term "C1-C" 60 "Alkoxy" refers to the compound formed by -OA 101 (where A) 101 For C1-C 60 Alkyl) is a monovalent group, and examples of it include methoxy, ethoxy, and isopropoxy. As used herein, the term "C1-C" is used in conjunction with other similar terms. 60 "Alkylthio" refers to the group consisting of -SA 101 (where A) 101 For C1-C 60 Alkyl groups are monovalent groups.

[0843] As used in this article, the term "C2-C" 60 "Alkenyl" refers to the group formed by the carbon atoms in the C2-C2 group. 60 A hydrocarbon group formed by substituting at least one carbon-carbon double bond into the middle or end of an alkyl group, and examples include vinyl, propenyl, and butenyl groups. As used herein, the term "C2-C" is used... 60 "Alkenyl" refers to a group with a C2-C ratio. 60 Divalent groups with the same structure as alkenyl groups.

[0844] As used in this article, the term "C2-C" 60 "Alkyne" refers to the group formed by the combination of C2-C... 60 A hydrocarbon group formed by substituting at least one carbon-carbon triple bond into the middle or end of an alkyl group, and examples include ethynyl and propynyl. As used herein, the term "C2-C" is used... 60 "Alynyl group" refers to a group with a C2-C group. 60 Divalent groups with the same structure as alkynyl groups.

[0845] As used in this article, the term "C3-C" 10 "Cycloalkyl" refers to a monocyclic saturated hydrocarbon group having 3-10 carbon atoms, and examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and cycloheptyl. As used herein, the term "C3-C" is also relevant. 10 "Cycloalkylene" refers to a compound with C3-C66 atoms. 10 Divalent groups with the same structure as cycloalkyl groups.

[0846] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl" refers to a monovalent saturated monocyclic group having at least one heteroatom of N, O, P, Si, or S as a cyclic atom and 1-10 carbon atoms, and non-limiting examples include tetrahydrofuranyl and tetrahydrothiophenylyl. The term "C1-C" is used herein. 10 "Heterocyclic alkyl" refers to a compound with C1-C2 atoms. 10 Divalent groups with the same structure as heterocyclic alkyl groups.

[0847] As used in this article, the term "C3-C" 10 "Cycloalkenyl" refers to a monovalent monocyclic group having 3-10 carbon atoms and at least one carbon-carbon double bond in its ring and not being aromatic, and non-limiting examples include cyclopentenyl, cyclohexenyl, and cycloheptenyl. The term "C3-C" is used as is herein. 10 "Cyclopentene" refers to a group with a C3-C6 bond structure. 10 A divalent group with the same structure as a cycloalkenyl group.

[0848] As used in this article, the term "C1-C" 10 "Heterocyclic alkenyl" refers to a monovalent monocyclic group having at least one heteroatom of N, O, P, Si, or S as a cyclic atom, 1-10 carbon atoms, and at least one double bond in its ring. C1-C 10 Examples of heterocyclic alkenyl groups are 2,3-dihydrofuranyl and 2,3-dihydrothiophenyl. As used herein, the term "C1-C..." 10 "Heterocyclic alkenyl" refers to a group that has a C1-C2 bond structure. 10 Divalent groups with the same structure as heterocyclic alkenyl groups.

[0849] As used in this article, the term "C6-C" 60 "Aryl" refers to a monovalent group having a carbocyclic aromatic system with 6-60 carbon atoms, and as used herein, "C6-C". 60 "Arylene" refers to a divalent group that has a carbocyclic aromatic system with 6-60 carbon atoms. (C6-C) 60 Examples of aryl groups include phenyl, naphthyl, anthraceneyl, phenanthryl, pyrene, and... Base. When C6-C 60 Aryl and C6-C 60 When each of the aryl groups comprises two or more rings, the rings may be fused together.

[0850] As used in this article, the term "C7-C" 60 "alkylaryl" refers to the group formed by C 1-54 Alkyl-substituted C 6-59 Aryl. As used in this text, the term "C7-C" 60 "Arylalkyl" refers to the C 6-59 aryl-substituted C 1-54 alkyl.

[0851] As used in this article, the term "C1-C" 60 "Heteroaryl" refers to a monovalent group having a heterocyclic aromatic system having at least one heteroatom of N, O, P, Si, or S as a cyclic atom, and 1-60 carbon atoms. The term "C1-C" is used herein. 60 "Hypo-heteroaryl" refers to a divalent group having a heterocyclic aromatic system having at least one heteroatom of N, O, P, Si, or S as a cyclic atom, and 1-60 carbon atoms. C1-C 60 Examples of heteroaryl groups include pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolinyl, and isoquinolinyl. When C1-C... 60 heteroaryl and C1-C 60 When each heteroaryl group comprises two or more rings, the rings can fused together.

[0852] As used in this article, the term "C2-C" 60 "alkylheteroaryl" refers to the group formed by C 1-59 Alkyl-substituted C 1-59 heteroaryl. As used in this text, the term "C2-C" is used in conjunction with... 60 "Heteroarylalkyl" refers to the C 1-59 heteroaryl-substituted C 1-59 alkyl.

[0853] As used in this article, the term "C6-C" 60 "Aryloxy group" represents -OA 102 (where A) 102 For C6-C 60 Aryl), and as used herein by the term "C6-C" 60 "Arylthio" indicates -SA 103 (where A) 103 For C6-C 60 Aryl). As used herein, the term "C1-C" 60"Heteroaryloxy" indicates -OA 104 (where A) 104 For C1-C 60 (heteroaryl), and as used herein by the term "C1-C 60 "Heteroarylsulfonyl" indicates -SA 105 (where A) 105 For C1-C 60 (Miscellaneous aromatic compounds).

[0854] As used herein, the term "monovalent nonaromatic fused polycyclic group" refers to a monovalent group in which two or more rings are fused together, only carbon is used as the cyclic atom (e.g., the number of carbon atoms can be 8-60), and the entire molecule is a nonaromatic group. Examples of monovalent nonaromatic fused polycyclic groups include the fluorene group. As used herein, the term "divalent nonaromatic fused polycyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused polycyclic group.

[0855] As used herein, the term "monovalent nonaromatic fused heterocyclic group" refers to a monovalent group having two or more fused rings, having heteroatoms of N, O, P, Si, or S as cyclic atoms in addition to carbon atoms (e.g., having 1-60 carbon atoms), and lacking aromaticity in its overall molecular structure. Examples of monovalent nonaromatic fused heterocyclic groups include the carbazole group. As used herein, the term "divalent nonaromatic fused heterocyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused heterocyclic group.

[0856] As used in this article, the term "C5-C" 30 A "carbocyclic group" refers to a saturated or unsaturated cyclic group with only 5-30 carbon atoms as cyclic atoms. (C5-C) 30 The carbocyclic group can be a monocyclic or polycyclic group, and depending on the formula structure, it can be a monovalent, divalent, trivalent, tetravalent, pentavalent, or hexavalent group.

[0857] As used in this article, the term "C1-C" 30 A "heterocyclic group" refers to a saturated or unsaturated cyclic group that has at least one heteroatom of N, O, P, Si, or S as a cyclic atom in addition to 1-30 carbon atoms. (C1-C) 30 Heterocyclic groups can be monocyclic or polycyclic, and depending on the formula structure, they can be monovalent, divalent, trivalent, tetravalent, pentavalent, or hexavalent groups.

[0858] Replacement C5-C 30 Carbocyclic groups, substituted C1-C 30 Heterocyclic groups, substituted C1-C 60 Alkyl, substituted C2-C60 Alkenyl, substituted C2-C 60 Alkyne group, substituted C1-C 60 Alkoxy, substituted C1-C 60 Alkylthio, substituted C3-C 10 cycloalkyl, substituted C1-C 10 Heterocyclic alkyl, substituted C3-C 10 Cycloalkenyl, substituted C1-C 10 Heterocyclic alkenyl, substituted C6-C 60 Aryl, substituted C7-C 60 Alkyl aryl, substituted C7-C 60 Arylalkyl, substituted C6-C 60 aryloxy groups, substituted C6-C 60 Arylthio, substituted C1-C 60 heteroaryl, substituted C2-C 60 Alkyl heteroaryl, substituted C2-C 60 Heteroarylalkyl, substituted C1-C 60 Heteroaryl groups, substituted C1-C 60 At least one substituent of the heteroaryl thio group, the substituted monovalent non-aromatic fused polycyclic group, and the substituted monovalent non-aromatic fused heterocyclic group may be:

[0859] Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, or C1-C 60 Alkoxy;

[0860] Each of the C1-Cs is replaced by at least one of the following: 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, or C1-C 60 Alkoxy groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amino, amidine, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -N(Q) 11 (Q) 12 ), -Si(Q 13 (Q) 14 (Q) 15 -B(Q) 16 (Q) 17 -P(Q) 18 (Q) 19 )-、-P(=S)(Q 18 (Q) 19 ), or -P(=O)(Q 18 (Q) 19 );

[0861] C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 Heteroaryl, monovalent non-aromatic fused polycyclic groups, C1-C 60 Heteroaryloxy, C1-C 60 heteroaryl thio groups, or monovalent non-aromatic fused heterocyclic groups;

[0862] Each of the C3-C molecules is replaced by at least one of the following: 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, or monovalent non-aromatic fused heterocyclic groups: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, amido, hydrazine, hydrazone, carboxylic acid groups or their salts, sulfonic acid groups or their salts, phosphate groups or their salts, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C1-C 60 Alkylthio, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C7-C 60 Alkyl aryl, C7-C 60 Arylalkyl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C2-C 60 Alkyl heteroaryl, C2-C 60 Heteroarylalkyl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -N(Q) 21 (Q) 22 ), -Si(Q 23 (Q) 24 (Q) 25 -B(Q) 26 (Q) 27 -P(Q) 28 (Q) 29 -P(=S)(Q) 28 (Q) 29 ), or -P(=O)(Q 28 (Q) 29 );or

[0863] -N(Q 31 (Q) 32 ), -Si(Q 33 (Q) 34 (Q) 35 -B(Q) 36 (Q) 37 ), P(Q 28 (Q) 29 -P(=S)(Q) 28 (Q)29 ), or -P(=O)(Q 38 (Q) 39 ),

[0864] Among them, Q1-Q9, Q 11 -Q 19 Q 21 -Q 29 and Q 31 -Q 39 Each of these groups can independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, amino, amido, hydrazine, hydrazone, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkylthio, C1-C 60 Alkyl, C2-C 60 alkenyl, C2-C 60 alkynyl group, C1-C 60 Alkoxy, C3-C 10 cycloalkyl, C1-C 10 Heterocyclic alkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocyclic alkenyl, C6-C 60 Aryl, C1-C 60 Alkyl or C6-C 60 At least one substituted C6-C of aryl group 60 Aryl, C6-C 60 Aryloxy group, C6-C 60 Arylthio, C1-C 60 heteroaryl, C1-C 60 Heteroaryloxy, C1-C 60 Heteroaryl thiols, monovalent non-aromatic fused polycyclic groups, or monovalent non-aromatic fused heterocyclic groups.

[0865] The term "room temperature" as used in this article refers to a temperature of approximately 25°C.

[0866] As used in this article, the terms “biphenyl, triphenyl, and tetraphenyl” refer to monovalent groups in which two, three, or four phenyl groups are linked together by single bonds.

[0867] As used herein, the terms "cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, and cyano-containing tetraphenyl" refer to phenyl, biphenyl, terphenyl, and tetraphenyl groups, respectively, in which each is substituted with at least one cyano group. In "cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, and cyano-containing tetraphenyl," the cyano group may be substituted at any position of the corresponding group, and "cyano-containing phenyl, cyano-containing biphenyl, cyano-containing terphenyl, and cyano-containing tetraphenyl" may further include substituents other than the cyano group. For example, a cyano-substituted phenyl, as well as a cyano- and methyl-substituted phenyl, may both fall under the category of "cyano-containing phenyl."

[0868] Hereinafter, compositions and organic light-emitting devices according to one or more exemplary embodiments will be described in further detail with reference to synthesis examples and embodiments. However, the organic light-emitting devices are not limited thereto. The phrase “using 'B' instead of 'A'” used in describing synthesis examples means that, in molar equivalents, the amount of 'A' used is the same as the amount of 'B' used.

[0869] Example

[0870] Example 1-1

[0871] The ITO glass substrate was cut into 50 mm × 50 mm × 0.5 mm dimensions, and then ultrasonically treated with acetone, isopropanol and deionized (DI) water for 15 minutes each. It was then cleaned by exposure to ultraviolet (UV) light and ozone for 30 minutes.

[0872] Subsequently, F6-TCNNQ was deposited on an ITO electrode (anode) on a glass substrate to form a structure with... A hole injection layer of a certain thickness is formed, and HT1 is deposited on the hole injection layer to form a layer with [missing information]. A hole transport layer of a certain thickness is formed, thereby completing the fabrication of the hole transport region.

[0873] Compound H-H104 (hereinafter referred to as H-H1 (first host), compound 57 of group HE4 (hereinafter referred to as H-E1 (second host)), compound SP001 (sensitizer) (wherein the weight ratio of the first host, second host, and sensitizer is 45:45:10), and FD1 (dopant) (wherein the amount of dopant is 0.1 weight percentage (wt%) based on the total weight of the first host, second host, sensitizer, and dopant) are co-deposited on the hole transport region to form a structure with The thickness of the emission layer.

[0874] Compounds ET17 and LiQ were co-deposited on the emitter layer in a 5:5 weight ratio to form a structure with... An electron transport layer of a certain thickness is formed, and then LiQ is deposited on the electron transport layer to form a layer with... An electron-injected layer of a certain thickness is formed, and Al is deposited on the electron-injected layer to form a layer with [missing information]. A cathode of a certain thickness is used to complete the fabrication of organic light-emitting devices.

[0875]

[0876] Examples 1-2 to 1-3, Examples 2-1 to 2-3, Example 3-1, Comparative Example 1, Comparative Examples 1-1 to 1-3, Comparative Example 2, Comparative Examples 2-1 to 2-3, Comparative Example 3, and Comparative Example 3-1

[0877] The organic light-emitting device was manufactured in the same manner as in Examples 1-1, except that, when forming the emission layer, the compounds and amounts shown in Table 7 were used as sensitizers and dopants.

[0878] Table 7

[0879]

[0880]

[0881]

[0882]

[0883] Evaluation Example 1: ΔE of compounds SP002 and SP003 ST

[0884] The S1 and T1 energy levels of compounds SP002 and SP003 were measured according to the method described in Table 8, and the results are shown in Table 9.

[0885] Table 8

[0886]

[0887]

[0888] Table 9

[0889] SP002 0.11eV 0.15eV SP003 0.329eV 0.4eV

[0890] Evaluation Example 2: Measurement of OLED lifetime and external quantum efficiency

[0891] (1) For each of the organic light-emitting devices fabricated according to Comparative Example 1, Examples 1-1 to 1-3, and Comparative Examples 1-1 to 1-3, the external quantum efficiency (EQE) and lifetime were evaluated. The results are shown in... Figures 4 to 7 middle.

[0892] First, refer to Figure 4 and 5 In Examples 1-1 to 1-3, some of the triplet excitons generated in SP001, which is used as a phosphorescent photosensitizer, are lost via FD1, and the efficiency is slightly lower compared to Comparative Example 1. However, its lifetime is significantly increased.

[0893] On the other hand, reference Figure 6 and 7 In Comparative Examples 1-1 to 1-3, even compared to Examples 1-1 to 1-3 which include the same amount of dopant, the reduction in external quantum efficiency is significant, and conversely, the lifetime is significantly reduced compared to Comparative Example 1. This is because the triplet excitons generated in SP001 are transferred to FD-A via dexter energy transfer and therefore do not contribute to optical emission, and are degraded due to nonradiative decay.

[0894] (2) For each of the organic light-emitting devices fabricated according to Comparative Examples 2, Examples 2-1 to 2-3, and Comparative Examples 2-1 to 2-3, the external quantum efficiency (EQE) and lifetime were evaluated. The results are shown in... Figures 8 to 11 middle.

[0895] First, refer to Figure 8 and 9 In Examples 2-1 to 2-3, some of the triplet excitons generated in SP002, which is used as a TADF sensitizer, are lost via FD1, and the efficiency is slightly lower compared to Comparative Example 2. However, its lifetime is significantly increased.

[0896] On the other hand, reference Figure 10 and 11 In Comparative Examples 2-1 to 2-3, even compared to Examples 2-1 to 2-3 which include the same amount of dopant, the reduction in external quantum efficiency is significant, and conversely, the lifetime is significantly reduced compared to Comparative Example 1. This is because the triplet excitons generated in SP002 are transferred to FD-A via dexter energy transfer and therefore do not contribute to optical emission, and are degraded due to nonradiative decay.

[0897] (3) For each of the organic light-emitting devices fabricated according to Comparative Example 3, Example 3-1, and Comparative Example 3-1, the external quantum efficiency (EQE) and lifetime were evaluated. The results are shown in... Figures 12 to 15 middle.

[0898] First, refer to Figure 12 and 13 In the case of Example 3-1, although some of the triplet excitons generated in SP003 (TADF sensitizer) are lost through FD2, the maximum external quantum efficiency (EQE) is higher than that of Comparative Example 3. 最大 The efficiency roll-off (%) increases. Furthermore, instead of minimizing TADF emission, FD2 fluorescence emission can occur, leading to a decrease in exciton lifetime. Therefore, the efficiency roll-off is significantly improved, and at 1000 candela / m² (cd / m²) as the actual luminance... 2 Under these conditions, compared to Comparative Example 3, EQE increased in the opposite direction, and as mentioned above, lifespan increased significantly.

[0899] On the other hand, reference Figure 14 and 15 In the case of Comparative Example 3-1, even compared to Example 3-1 which includes the same amount of dopant, the external quantum efficiency is significantly reduced, and the increase in lifetime compared to Comparative Example 3 is negligible. This is because the triplet excitons generated in SP002 are transferred to FD-A via dexter energy transfer and therefore do not contribute to optical emission, and are degraded due to nonradiative decay.

[0900] Evaluation Example 3: HOD Measurement

[0901] (1) For Examples 1-1, Comparative Example 1, and Comparative Example 1-1, hole-only devices (HODs) were fabricated without stacking an electron transport layer and an electron injection layer on the emitter layer.

[0902] For such HOD devices, the relative HOD value is measured using the method described in this paper. The results are shown in... Figure 16 middle.

[0903] (2) For Examples 2-1, Comparative Example 2, and Comparative Example 2-1, the HOD was manufactured in the same manner as in (1), and for such HOD devices, the relative HOD value of the HOD device was measured using the method substrate described in this specification. The values ​​are shown in... Figure 17 middle.

[0904] Organic light-emitting devices according to one or more embodiments of this disclosure can have high efficiency and long lifespan.

[0905] It should be understood that the exemplary embodiments described herein are to be considered only in the descriptive sense and are not intended for limiting purposes. The descriptions of features or aspects in the various exemplary embodiments should typically be considered applicable to other similar features or aspects in other exemplary embodiments. Although one or more exemplary embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope defined by the appended claims.

Claims

1. A composition comprising a first compound as a sensitizer, a second compound as a dopant, and a third compound as the main component, wherein... The first compound, the second compound, and the third compound are different from each other. The first compound satisfies one of conditions 1 and 2, and The second compound includes compounds represented by Formula 1: Condition 1 The first compound contains a transition metal. Condition 2 The energy difference between the triplet energy level and the singlet energy level of the first compound is 0.4 eV or less, and the first compound emits delayed fluorescence. Formula 1 In Formula 1, ring A1 is a pyrene group. In Equation 1, L1 is a single bond. In Equation 1, a1 is 1. In Equation 1, b1 is an integer between 3 and 6, and In Formula 1, R1 is a group represented by Formula 2 or Formula 3. Formula 2 Formula 3 In formulas 2 and 3, ring A3 and ring A4 are each independently a phenyl group. In equations 2 and 3, T3 and T4 are each independently derived from... -C(R5)(R6)(R7) represents the group. In equations 2 and 3, c3 and c4 are each independent integers from 0 to 10, where, When c3 is 2 or greater, two or more T3s are either the same or different from each other; and when c4 is 2 or greater, two or more T4s are either the same or different from each other. T in Equation 3 11 It is a single key. In equations 1 to 3, R2-R7 are each independently hydrogen, deuterium, or C1-C. 60 alkyl, In equations 1 to 3, b2-b4 are each an independent integer from 0 to 10, where, when b2 is 2 or greater, two or more R2s are the same or different from each other; when b3 is 2 or greater, two or more R3s are the same or different from each other; and when b4 is 2 or greater, two or more R4s are the same or different from each other. Indicates the binding site with adjacent atoms. The first compound is a compound from Groups II to III: Group II Group III ,or The first compound is from one of groups VIII and XI to XIII: Group VIII Group XI Group XII Group XIII ， The third compound includes electron transport compounds and hole transport compounds. The electron transport compound includes at least one electron transport component. The hole transport compound does not include the electron transport portion, and The electron transport portion is a cyano group, a cyclic group containing nitrogen lacking π electrons, or a group represented by one of the following formulas: In the above formula , ',and Each is a binding site for the adjacent atom.

2. The composition of claim 1, wherein the compound represented by formula 1 is represented by formula 1-1: Equation 1-1 in, In Equation 1-1, R 11 -R 20 Each independently of the ground -(L1) a1 -R1 represents a group, hydrogen, deuterium, or C1-C. 60 alkyl, R in Equation 1-1 11 -R 20 At least three independent reasons -(L1) a1 -R1 represents the group, Indicates the binding site with adjacent atoms.

3. The compound of claim 2, wherein... i) R in Equation 1-1 11 R 13 R 16 and R 18 Three or more independently of each other -(L1) a1 -R1 represents the group, and in Indicates the binding site with adjacent atoms.

4. The composition of claim 1, wherein the sum of c3 and c4 in formulas 2 and 3 is 1 or greater.

5. The composition of claim 1, wherein R5-R7 in formulas 2 and 3 are each independently -CH3, -CD3, -CD2H, -CDH2, phenyl, or a group represented by any one of formulas 9-1 to 9-19: In equations 9-1 to 9-19 Indicates the binding site with adjacent atoms.

6. The composition of claim 1, wherein R1 of formula 1 is a group represented by any one of formulas 2-1 to 2-42 or 3-1 to 3-36: in, In equations 2-1 to 2-42 and 3-1 to 3-36, T3, T4, T 11 R3 and R4 as described in claim 1, b32 and b42 are each independent integers between 0 and 2. b33 and b43 are each independent integers between 0 and 3. b34 and b44 are each independent integers between 0 and 4. b35 and b45 are each independent integers from 0 to 5, and Indicates the binding site with adjacent atoms.

7. The composition of claim 1, wherein the second compound is at least one of the following compounds: 。 8. The composition of claim 1, wherein The electron transport compound comprises at least one cyclic group of nitrogen lacking π electrons and at least one electron transport moiety. The hole transport compound comprises at least one cyclic group of nitrogen that does not contain π-electron-deficient nitrogen, and does not include an electron transport moiety. The electron transport portion is a cyano group or a cyclic group containing nitrogen that is π-deficient.

9. The composition of claim 1, wherein The electron transport compound comprises at least one of i) a cyano, pyrimidine, pyrazine, or triazine group, or ii) a benzo[9,10]phenanthrene group, and The hole-transporting compound includes a carbazole group.

10. Organic light-emitting devices, including: First electrode; Second electrode; as well as The organic layer located between the first electrode and the second electrode, The organic layer mentioned above includes an emission layer, and The organic layer thereof comprises the composition as described in any one of claims 1-9.

11. The organic light-emitting device of claim 10, wherein the emitting layer comprises the composition.

12. The organic light-emitting device of claim 11, wherein the emitting layer emits blue light.

13. Organic light-emitting devices, including: First electrode; Second electrode; m light-emitting units located between the first electrode and the second electrode and including at least one emission layer; as well as Located between two adjacent light-emitting units of the m light-emitting units, and comprising m-1 charge-generating layers including an n-type charge-generating layer and a p-type charge-generating layer. Where m is an integer of 2 or greater. The maximum emission wavelength of light emitted from at least one of the m light-emitting units is different from the maximum emission wavelength of light emitted from at least one of the other light-emitting units of the m light-emitting units, and At least one emission layer comprises the composition as described in any one of claims 1-9.

14. Organic light-emitting devices, including: First electrode; Second electrode; as well as m emission layers are located between the first electrode and the second electrode, wherein, m is an integer of 2 or greater. The maximum emission wavelength of light emitted from at least one of the m emission layers is different from the maximum emission wavelength of light emitted from at least one of the other m emission layers. At least one emission layer comprises the composition as described in any one of claims 1-9.

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