Organic light-emitting diodes

Abstract

To provide an organic light-emitting element.SOLUTION: There are disclosed: an organic light-emitting element that includes a first electrode, a second electrode opposed to the first electrode, and a first layer 130 including a first compound, a second layer 150 including a second compound and a third layer 170 including a third compound with the layers interposed between the first electrode 110 and second electrode 190, wherein the first to third compounds each independently include at least one radical selected from the group of radicals represented by chemical formulas A to C, and the first compound does not include a nitrogen-containing heterocycle radical having *=N-*'; and in the chemical formulas A to C, a ring A1, a ring A11, a ring A12, R1, R2, R11, R12, and * and *'are binding sites for adjacent atoms.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to an organic light-emitting element. [Background technology]

[0002] Organic light-emitting devices are self-emitting elements that, compared to conventional elements, offer not only a wider viewing angle and superior contrast, but also shorter response times and superior characteristics in brightness, drive voltage, and response speed.

[0003] The organic light-emitting device disclosed in Patent Document 1 has a structure in which a first electrode is arranged on the upper part of a substrate, and a hole transport region, an emissive layer, an electron transport region, and a second electrode are sequentially formed on the upper part of the first electrode. Holes injected from the first electrode move to the emissive layer via the hole transport region, and electrons injected from the second electrode move to the emissive layer via the electron transport region. Carriers such as holes and electrons recombine in the emissive layer region to generate excitons. Light is generated as these excitons change from the excited state to the ground state. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Specification of Patent Application Publication No. 2014-0095491 of the Republic of Korea [Overview of the project] [Problems that the invention aims to solve]

[0005] However, the organic light-emitting element disclosed in Patent Document 1 was insufficient in terms of efficiency and lifespan.

[0006] Therefore, an object of the present invention is to provide an organic light-emitting element having high efficiency and long lifespan. Another object of the present invention is to provide an organic light-emitting element with a low driving voltage. [Means for solving the problem]

[0007] The inventors of the present invention, after diligently studying to achieve the above objectives, discovered that it can be achieved by an organic light-emitting element having the following configuration, and thus completed the present invention.

[0008] First electrode and, A second electrode facing the first electrode, A first layer containing the first compound is interposed between the first electrode and the second electrode, A second layer containing a second compound is interposed between the first layer and the second electrode, A third layer containing a third compound is interposed between the second layer and the second electrode, and comprises: The first compound, the second compound, and the third compound each independently contain at least one group represented by any of the following chemical formulas A to C: The first compound is an organic light-emitting element that does not contain a nitrogen-containing heterocyclic group having *=N-*':

[0009] [ka]

[0010] In the aforementioned chemical formulas A to C, Ring A1, Ring A 11 and ring A 12 These are, independently of each other, C5-C 30 Carbon ring or C2-C 30 It is a heterocyclic ring, R1, R2, R 11 and R 12 They are independent of each other, A hydrogen atom, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C 60 alkyl group, a substituted or unsubstituted C2-C 60 alkenyl group, a substituted or unsubstituted C2-C 60 alkynyl group, and a substituted or unsubstituted C1-C 60 alkoxy group; substituted or unsubstituted C3-C 10 cycloalkyl group, a substituted or unsubstituted C1-C 10 heterocycloalkyl group, a substituted or unsubstituted C3-C 10 cycloalkenyl group, a substituted or unsubstituted C1-C 10 heterocycloalkenyl group, a substituted or unsubstituted C6-C 60 aryl group, a substituted or unsubstituted C6-C 60 aryloxy group, a substituted or unsubstituted C6-C 60 arylthio group, a substituted or unsubstituted C1-C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and a substituted or unsubstituted monovalent non-aromatic hetero-condensed polycyclic group; and -N(Q1)(Q2), -Si(Q3)(Q4)(Q5) and -B(Q6)(Q7); selected from the group consisting of where Q1 to Q7 are each independently a hydrogen atom, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C1-C 60 alkyl group, a C2-C 60 alkenyl group, a C2-C 60 alkynyl group, a C1-C 60 alkoxy group, a C3-C 10 cycloalkyl group, a C1-C 10 heterocycloalkyl group, a C3-C 10 cycloalkenyl group, a C1-C 10Heterocycloalkenyl group, C6-C 60 Aryl group, C1-C 60 Selected from the group consisting of heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups, a1, a11, and a12 are independent integers between 0 and 10. a2 is an integer between 0 and 2. * and *' are bonding sites with adjacent atoms. [Effects of the Invention]

[0011] The organic light-emitting element according to the present invention has high efficiency and a long lifespan. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram showing the structure of an organic light-emitting element according to one embodiment. [Modes for carrying out the invention]

[0013] The embodiments of the present invention will be described in detail below so that they can be easily implemented by a person with ordinary skill in the art to which the invention pertains. However, the present invention can be realized in a variety of different forms and is not limited to the embodiments described herein.

[0014] Unless otherwise defined herein, “substitution” means that a hydrogen atom in a compound is replaced by a deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salts, sulfonic acid group or its salts, phosphate group or its salts, C1-C 60 Alkyl alkyl group (preferably C1-C) 20 Alkyl alkyl groups, moreover C1-C 10 Alkyl(alkyl group), C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group (preferably C1-C) 20Alkoxy group, more preferably C1-C 10 Alkoxy group), C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group (preferably C6-C) 16 Aryl group), C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic heterocondensed polycyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -B(Q6)(Q7), carbonyl groups, carbamyl groups, thiol groups, ester groups, C7-C 30 Arylalkyl groups, C3-C 30 Heteroarylalkyl groups, C6-C 15 Cycloalkynyl group, C2-C 30 This means that the substituents are substituted with groups selected from the group consisting of heterocycloalkyl groups. These substituents may be further substituted with other substituents, but they cannot be further substituted with the same substituent. In other words, the substituted alkyl group cannot be substituted with another alkyl group. Note that Q1 to Q7 above are, independently of each other, hydrogen atom, deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C1-C 60The group is selected from the group consisting of heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups.

[0015] Furthermore, unless otherwise defined herein, "hetero" means a material containing one to three heteroatoms selected from the group consisting of N, O, S, and P.

[0016] Furthermore, in this specification, the range "X~Y" includes X and Y, meaning "X or greater and Y or less." Unless otherwise specified, operations and measurements of physical properties are performed under room temperature (20~25°C) / relative humidity 40~50%.

[0017] The organic light-emitting element according to an embodiment of the present invention is First electrode and, A second electrode facing the first electrode, A first layer containing the first compound is interposed between the first electrode and the second electrode, A second layer containing a second compound is interposed between the first layer and the second electrode, The present invention includes a third layer interposed between the second layer and the second electrode, which contains a third compound.

[0018] The first electrode is an anode, and the second electrode may be a cathode; see below for a description of the first and second electrodes.

[0019] Other layers may be interposed between the first electrode and the first layer, but it is preferable that they are adjacent to each other.

[0020] Other layers (e.g., electron injection layer, electron transport layer) may be interposed between the third layer and the second electrode.

[0021] Other layers may be interposed between the first and second layers, but it is preferable that the two layers be adjacent to each other. Similarly, other layers may be interposed between the second and third layers, but it is preferable that the two layers are adjacent.

[0022] The first to third compounds each independently contain at least one, preferably 1 to 4, more preferably 1 to 3, and particularly preferably 1 to 2, groups represented by any of the following chemical formulas A to C. Furthermore, it is preferable that the first to third compounds each independently contain at least one group represented by the following chemical formula C. However, the first compound does not contain a nitrogen-containing heterocyclic group having *=N-*'.

[0023] [ka]

[0024] In the above chemical formulas A to C, ring A1, ring A 11 and ring A 12 These are, independently of each other, C5-C 30 Carbon ring or C2-C 30 Heterocyclic, preferably C6-C 16 Carbocyclic or C1-C 16 It is a heterocycle. According to one embodiment, in the chemical formulas A to C, ring A1, ring A 11 and ring A 12 These are independently selected from the group consisting of benzene, naphthalene, fluorene, benzofluorene, pyridine, pyrimidine, carbazole, benzocarbazole, and dibenzothiophene. In chemical formula C, ring A 11 and ring A 12 Preferably, at least one of them is benzene.

[0025] In the above chemical formulas A to C, R1, R2, R 11 and R 12 They are independent of each other, Hydrogen atom, deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60an alkynyl group, and a substituted or unsubstituted C1-C 60 alkoxy group; substituted or unsubstituted C3-C 10 cycloalkyl group, substituted or unsubstituted C1-C 10 heterocycloalkyl group, substituted or unsubstituted C3-C 10 cycloalkenyl group, substituted or unsubstituted C1-C 10 heterocycloalkenyl group, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 arylthio group, substituted or unsubstituted C1-C 60 heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group and monovalent non-aromatic hetero-condensed polycyclic group; ; and -N(Q1)(Q2), -Si(Q3)(Q4)(Q5) and -B(Q6)(Q7); selected from the group consisting of, where the Q1 to Q7 are each independently a hydrogen atom, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C 60 alkyl group, substituted or unsubstituted C2-C 60 alkenyl group, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 cycloalkyl group, substituted or unsubstituted C1-C 10 heterocycloalkyl group, substituted or unsubstituted C3-C 10 cycloalkenyl group, substituted or unsubstituted C1-C 10 heterocycloalkenyl group, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C1-C 60It is selected from the group consisting of a heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic hetero-condensed polycyclic group.

[0026] According to another embodiment, in the chemical formulas A to C, R1, R2, R 11 and R 12 are, independently of each other, a hydrogen atom, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C1-C 20 alkyl group and a substituted or unsubstituted C1-C 20 alkoxy group; Substituted or unsubstituted phenyl group, substituted or unsubstituted biphenyl group, substituted or unsubstituted terphenyl group, substituted or unsubstituted naphthyl group, substituted or unsubstituted fluorenyl group, substituted or unsubstituted spiro-fluorenyl group, substituted or unsubstituted benzofluorenyl group, substituted or unsubstituted dibenzofluorenyl group, substituted or unsubstituted phenantrenyl group, substituted or unsubstituted anthracenyl group, substituted or unsubstituted triphenylenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted pyrrolyl group, substituted or unsubstituted thiophenyl group, substituted or unsubstituted furanyl group, substituted or unsubstituted imidazolyl group, substituted or unsubstituted pyrazolyl group, substituted or unsubstituted thiazolyl group, substituted or unsubstituted isothiazolyl group, substituted or unsubstituted oxazolyl group, substituted or unsubstituted isoxazolyl group, substituted or unsubstituted pyridinyl group, Substituting or unsubstituted pyrazinyl groups, substituted or unsubstituted pyrimidinyl groups, substituted or unsubstituted pyridadinyl groups, substituted or unsubstituted quinolinyl groups, substituted or unsubstituted isoquinolinyl groups, substituted or unsubstituted benzoquinolinyl groups, substituted or unsubstituted quinoxalinyl groups, substituted or unsubstituted quinazolinyl groups, substituted or unsubstituted carbazolyl groups, substituted or unsubstituted benzimidazolyl groups, substituted or unsubstituted benzofuranyl groups, substituted or unsubstituted benzothiophenyl groups, substituted or unsubstituted isobenzothiazolyl groups, substituted or unsubstituted benzoxazolyl groups, substituted or unsubstituted isobenzoxazolyl groups, substituted or unsubstituted oxadiazolyl groups, substituted or unsubstituted triazinyl groups, substituted or unsubstituted dibenzofuranyl groups, substituted or unsubstituted dibenzothiophenyl groups, substituted or unsubstituted imidazopyridinyl groups and substituted or unsubstituted imidazopyrimidinyl groups; and Selected from the group consisting of -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), and -B(Q6)(Q7); The above Q1 to Q7 are independent of each other, C1-C 10 Alkyl alkyl group, C1-C 10A group selected from alkoxy, phenyl, biphenyl, terphenyl, and naphthyl groups.

[0027] According to one embodiment of the present invention, in the chemical formulas A to C, R1, R2, R 11 and R 12 These are, independently of each other, a hydrogen atom, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or its salt, a sulfonic acid group or its salt, a phosphate group or its salt, and a substituted or unsubstituted C1-C 20 Alkyl groups, and substituted or unsubstituted C1-C 20 Alkoxy group; Substituted or unsubstituted phenyl groups, substituted or unsubstituted biphenyl groups, substituted or unsubstituted terphenyl groups, substituted or unsubstituted fluorenyl groups, substituted or unsubstituted naphthyl groups, substituted or unsubstituted pyridinyl groups, substituted or unsubstituted pyrimidinyl groups, substituted or unsubstituted triazinyl groups, substituted or unsubstituted quinolinyl groups, substituted or unsubstituted isoquinolinyl groups, substituted or unsubstituted quinazolinyl groups and substituted or unsubstituted quinoxalinyl groups; and Selected from the group consisting of -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), and -B(Q6)(Q7); The above Q1 to Q7 are independent of each other, C1-C 10 Alkyl alkyl group, C1-C 10 The group may be selected from the group consisting of alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, fluorenyl groups, and naphthyl groups.

[0028] In the above chemical formulas A to C, R1, R2, R 11 and R 12 These are, independently of each other, hydrogen atoms or substituted or unsubstituted C1-C 60 Preferably an alkyl group, consisting of a hydrogen atom or a substituted or unsubstituted C1-C 20 It is more preferably an alkyl group, and more preferably a hydrogen atom or a substituted or unsubstituted C1-C8 alkyl group.

[0029] In the chemical formulas A to C, a1, a11, and a12 are independent integers between 0 and 10, and a2 may be an integer between 0 and 2.

[0030] a1 represents the number of R1 atoms in chemical formula A. If a1 is 2 or greater, the two or more R1 atoms may be identical or different from each other. The explanations for a2, a11, and a12 will be understood by referring to the structures of chemical formulas B and C, as well as the explanation for a1.

[0031] For example, in the chemical formulas A to C, a1, a11, and a12 are integers from 0 to 8, and a2 may be an integer from 0 to 2. a11 and a12 are preferably integers from 0 to 4, more preferably integers from 0 to 2, even more preferably 0 or 1, and particularly preferably 0.

[0032] In the chemical formulas A to C above, * and *' represent bonding sites with adjacent atoms.

[0033] According to another embodiment of the present invention, the first to third compounds may independently contain at least one group represented by any of the following chemical formulas A(1), A(2), B(1) to B(4), and C(1) to C(16).

[0034] [ka]

[0035] [ka]

[0036] In the aforementioned chemical formulas A(1), A(2), B(1) to B(4) and chemical formulas C(1) to C(16), R 1a ~R 1d This is the same as R1 above, R2a and R 2b This is the same as R2 mentioned above, R 11a ~R 11h is the aforementioned R 11 It is similar to, R 12a ~R 12d is the aforementioned R 12 It is similar to, * indicates a bonding site with an adjacent atom.

[0037] For example, among the chemical formulas A(1), A(2), B(1) to B(4) and C(1) to C(16), R 1a ~R 1d , R 2a , R 2b , R 11a ~R 11h and R 12a ~R 12d They are independent of each other, Hydrogen atom, deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 20 Alkyl groups, and substituted or unsubstituted C1-C 20 Alkoxy group; Substituted or unsubstituted phenyl groups, substituted or unsubstituted biphenyl groups, substituted or unsubstituted terphenyl groups and naphthyl groups; and Selected from the group consisting of -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), and -B(Q6)(Q7); The above Q1 to Q7 are independent of each other, C1-C 10 Alkyl alkyl group, C1-C 10 The group is selected from the group consisting of alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, and naphthyl groups.

[0038] The aforementioned R 1a ~R 1d , R 2a , R 2b , R 11a ~R11h and R 12a ~R 12d These are, independently of each other, hydrogen atoms or substituted or unsubstituted C1-C 20 It is preferably an alkyl group, more preferably a hydrogen atom or a substituted or unsubstituted C1-C8 alkyl group, and even more preferably a hydrogen atom or a substituted or unsubstituted C1-C4 alkyl group.

[0039] According to one embodiment of the present invention, the first to third compounds may be compounds that are independently represented by any of the following chemical formulas 1-1 to 1-3, 2H-1, 2D-1, 2D-2, 3-1, and 3-2.

[0040] [ka]

[0041] [ka]

[0042] In the aforementioned chemical formula 3-1, X1~X3 are independent of each other, CR 41 Or it is N.

[0043] For example, in the above chemical formula 3-1, X1 is CR 41 And X2 is CR 42 And X3 is CR 43 It may also be possible. In that case, Ar 41 ~Ar 43 At least one of these may contain a nitrogen-containing heterocyclic group having *=N-*'.

[0044] In one embodiment, it is preferable that at least one of X1 to X3 in the chemical formula 3-1 is N, and it is more preferable that at least two of X1 to X3 are N.

[0045] In the above chemical formula 3-2, R 41 ~R43 See below for further details.

[0046] In the aforementioned chemical formulas 1-1, 1-2, 1-3, 2H-1, 2D-1, 2D-2, 3-1, and 3-2, L 21 ~L 24 , L 31 ~L 34 , and L 41 ~L 43 These are C3-C, which are substituted or non-substituted, independently of each other. 10 Cycloalkylene group, substituted or unsubstituted C1-C 10 Heterocycloalkylene group, substituted or unsubstituted C3-C 10 Cycloalkenylene group, substituted or unsubstituted C1-C 10 Heterocycloalkenylene group, substituted or unsubstituted C6-C 60 Arylene group, substituted or unsubstituted C1-C 60 The group is selected from the group consisting of heteroarylene groups, substituted or unsubstituted divalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted divalent non-aromatic heterocondensed polycyclic groups.

[0047] For example, in the chemical formulas 1-1, 1-2, 1-3, 2H-1, 2D-1, 2D-2, 3-1 and 3-2, L 21 or L 24 , L 31 or L 34 , and L 41 or L 43These are, independently of each other, a substituted or unsubstituted phenylene group, a substituted or unsubstituted pentarenylene group, a substituted or unsubstituted indenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted azurenylene group, a substituted or unsubstituted heptarenylene group, a substituted or unsubstituted indacenylene group, a substituted or unsubstituted acenaphthylene group, a substituted or unsubstituted fluorenylene group, a substituted or unsubstituted spiro-fluorenylene group, a substituted or unsubstituted benzofluorenylene group, a substituted or unsubstituted dibenzofluorenylene group, a substituted or Unsubstituted phenalenylene group, substituted or unsubstituted phenantrenylene group, substituted or unsubstituted anthracenylene group, substituted or unsubstituted fluoranthenylene group, substituted or unsubstituted triphenylenylene group, substituted or unsubstituted pyrenylene group, substituted or unsubstituted chrysenylene group, substituted or unsubstituted naphthacenylene group, substituted or unsubstituted picenylene group, substituted or unsubstituted perillenylene group, substituted or unsubstituted pentaphenylene group, substituted or unsubstituted hexacenylene group, substituted or unsubstituted pentaphenylene group, substituted or unsubstituted Substituted rubicenylene group, substituted or unsubstituted coronenylene group, substituted or unsubstituted ovalenylene group, substituted or unsubstituted pyrrolylene group, substituted or unsubstituted thiophenylene group, substituted or unsubstituted furanylene group, substituted or unsubstituted imidazoylene group, substituted or unsubstituted pyrazolylene group, substituted or unsubstituted thiazoylene group, substituted or unsubstituted isothiazoylene group, substituted or unsubstituted oxazolylene group, substituted or unsubstituted isoxazolylene group, substituted or unsubstituted pyridinylene group, substituted or unsubstituted pyradinylene group , substituted or unsubstituted pyrimidinylene group, substituted or unsubstituted pyridadinylene group, substituted or unsubstituted isoindolylene group, substituted or unsubstituted indolylene group, substituted or unsubstituted indazoylene group, substituted or unsubstituted prynylene group, substituted or unsubstituted quinolinylene group, substituted or unsubstituted isoquinolinylene group, substituted or unsubstituted benzoquinolinylene group, substituted or unsubstituted phthalazine group, substituted or unsubstituted naphthylidinylene group, substituted or unsubstituted quinoxalinylene group, substituted or unsubstituted quinazolinylene group,Substituted or unsubstituted syntholinylene group, substituted or unsubstituted carbazoylene group, substituted or unsubstituted phenanthridineylene group, substituted or unsubstituted acridinylene group, substituted or unsubstituted phenanthrolinylene group, substituted or unsubstituted phenadinylene group, substituted or unsubstituted benzimidazoylene group, substituted or unsubstituted benzofuranylene group, substituted or unsubstituted benzothiophenylene group, substituted or unsubstituted isobenzothiazoylene group, substituted or unsubstituted benzoxazolylene group, substituted or unsubstituted isobenzoxazolylene group, substituted or unsubstituted triazolylene group, substituted or unsubstituted The group may be a substituted tetrazoylene group, a substituted or unsubstituted oxadiazoylene group, a substituted or unsubstituted triazinylene group, a substituted or unsubstituted dibenzofuranylene group, a substituted or unsubstituted dibenzothiophenylene group, a substituted or unsubstituted benzocarbazolylene group, a substituted or unsubstituted dibenzocarbazolylene group, a substituted or unsubstituted thiadiazoylene group, a substituted or unsubstituted imidazopyridinylene group, or a substituted or unsubstituted imidazopyrimidinylene group, preferably a substituted or unsubstituted phenylene group, a substituted or unsubstituted pyrimidinylene group, or a substituted or unsubstituted carbazoylene group.

[0048] In the above chemical formulas 1 and 2, L 25 C3-C is either substituted or non-substituted. 10 Cycloalkylene group, substituted or unsubstituted C1-C 10 Heterocycloalkylene group, substituted or unsubstituted C3-C 10 Cycloalkenylene group, substituted or unsubstituted C1-C 10 Heterocycloalkenylene group, substituted or unsubstituted C6-C 60 Arylene group, and substituted or unsubstituted C1-C 60 A group selected from the group consisting of heteroarylene groups, preferably a substituted or unsubstituted C6-C 60 An arylene group, more preferably a substituted or unsubstituted C6-C 20 An arylene group, particularly preferably a substituted or unsubstituted phenylene group.

[0049] In the chemical formula 2D-1, L 35 C6-C is either substituted or unsubstituted. 60 Condensed polycyclic arylene group, substituted or unsubstituted C1-C 60 The group is selected from the group consisting of condensed polycyclic heteroarylene groups, substituted or unsubstituted divalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted divalent non-aromatic heterocondensed polycyclic groups.

[0050] For example, in the above chemical formula 2D-1, L 35 teeth, Substituted or unsubstituted pentarenylene group, substituted or unsubstituted indenylene group, substituted or unsubstituted naphthylene group, substituted or unsubstituted azurenylene group, substituted or unsubstituted heptarenylene group, substituted or unsubstituted indacenylene group, substituted or unsubstituted acenaphthylene group, substituted or unsubstituted fluorenylene group, substituted or unsubstituted spiro-fluorenylene group, substituted or unsubstituted benzofluorenylene group, substituted or unsubstituted dibenzofluorenylene group, substituted or unsubstituted phenalenylene group, substituted or unsubstituted Phenantrenylene group, substituted or unsubstituted anthracenylene group, substituted or unsubstituted fluoranthenylene group, substituted or unsubstituted triphenylenylene group, substituted or unsubstituted pyrenylene group, substituted or unsubstituted chrysenylene group, substituted or unsubstituted naphthacenylene group, substituted or unsubstituted picenylene group, substituted or unsubstituted perillenylene group, substituted or unsubstituted pentaphenylene group, substituted or unsubstituted hexacenylene group, substituted or unsubstituted pentacenylene group, substituted or unsubstituted rubicenylene group, substituted or unsubstituted Substituted coroneylene group, substituted or unsubstituted ovalenylene group, substituted or unsubstituted isoindolylene group, substituted or unsubstituted indorylene group, substituted or unsubstituted indazoylene group, substituted or unsubstituted prynylene group, substituted or unsubstituted quinolinylene group, substituted or unsubstituted isoquinolinylene group, substituted or unsubstituted benzoquinolinylene group, substituted or unsubstituted phthalazine group, substituted or unsubstituted naphthylidinylene group, substituted or unsubstituted quinoxalinylene group, substituted or unsubstituted quinazolinylene group, substituted or unsubstituted Substituted synnolinylene group, substituted or unsubstituted carbazoylene group, substituted or unsubstituted phenanthrolinylene group, substituted or unsubstituted acridinylene group, substituted or unsubstituted phenanthrolinylene group, substituted or unsubstituted phenadinylene group, substituted or unsubstituted benzimidazoylene group, substituted or unsubstituted benzofuranylene group, substituted or unsubstituted benzothiophenylene group, substituted or unsubstituted isobenzothiazoylene group, substituted or unsubstituted benzoxazolylene group, substituted or unsubstituted isobenzoxazolylene group,A group selected from the group consisting of a substituted or unsubstituted oxadiazolylene group, a substituted or unsubstituted dibenzofuranylene group, a substituted or unsubstituted dibenzothiophenylene group, a substituted or unsubstituted benzocarbazolylene group, a substituted or unsubstituted dibenzocarbazolylene group, a substituted or unsubstituted imidazopyridinylene group and a substituted or unsubstituted imidazopyrimidinylene group, preferably a substituted or unsubstituted pyrenylene group.

[0051] In the chemical formulas 1-1, 1-2, 1-3, 2D-1, 2D-2, 3-1 and 3-2, b1 to b5, d1 to d5, and g1 to g3 may each independently be an integer of 0 to 3.

[0052] b1 indicates the number of L 21 in the chemical formulas 1-1 to 1-3. When b1 is 0, *-(L 21 ) b1 -*’ is a single bond. When b1 is 2 or more, two or more L 21 may be the same as or different from each other. The explanations for b2 to b5 can be understood by referring to the structures of the chemical formulas 1-1 to 1-3 and the explanation for b1.

[0053] In chemical formula 1-1, b1 to b3 are each independently preferably an integer of 1 to 3.

[0054] In chemical formula 1-2, b1 to b4 are each independently preferably an integer of 0 to 2, more preferably 1 or 2. Also, in chemical formula 1-2, b5 is preferably an integer of 1 to 3, more preferably 1 or 2, and even more preferably 2.

[0055] In chemical formula 1-3, b1 to b3 are each independently preferably an integer of 0 to 2, more preferably 0 or 1.

[0056] d1 is the L 31This indicates the number of such items, and if d1 is 0, then *-(L 31 ) d1 -*' results in a single bond, and if d1 is 2 or more, then L is 2 or more. 31 These may be identical or different from one another. The explanations for d2 to d5 will be understood by referring to the structures of chemical formulas 2D-1 and 2D-2, and the explanation for d1.

[0057] In chemical formula 2D-1, d1 to d4 are mutually independent integers, preferably between 0 and 2, more preferably 0 or 1, and even more preferably 0. Also, in chemical formula 2D-1, d5 is preferably an integer between 0 and 2, more preferably 1 or 2, and even more preferably 1.

[0058] In chemical formula 2D-2, d1 to d3 are mutually independent integers, preferably 1 to 3, more preferably 1 or 2, and even more preferably 1.

[0059] g1 is L in the chemical formulas 3-1 and 3-2. 41 This indicates the number of such items, and if g1 is 0, then *-(L 41 ) g1 -*' results in a single bond, and if g1 is 2 or more, then 2 or more L 41 These may be identical or different from each other. The explanations for g2 and g3 will be understood by referring to the structures of chemical formulas 3-1 and 3-2, and the explanation for g1.

[0060] In chemical formula 3-1, g1 to g3 are mutually independent integers, preferably between 0 and 2, and more preferably 0 or 1.

[0061] In chemical formula 3-2, g1 and g2 are independent of each other and are preferably integers between 0 and 2, more preferably 0 or 1. Also, in chemical formula 3-2, g3 is an integer between 0 and 2, more preferably 0 or 1, and even more preferably 0.

[0062] In the aforementioned chemical formulas 1-1, 1-2, 1-3, 2H-1, 2D-1, 2D-2, 3-1, and 3-2, Ar 21 ~Ar 24 Ar 31 ~Ar 34 , and Ar 41 ~Ar 43 These are, independently of each other, the groups represented by the chemical formulas A to C, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C1-C 60 The group is selected from the group consisting of heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups.

[0063] For example, in the chemical formulas 1-1, 1-2, 1-3, 2H-1, 2D-1, 2D-2, 3-1 and 3-2, Ar 21 ~Ar 24 Ar 31 ~Ar 34 and Ar 41 ~Ar 43 They are independent of each other, The groups represented by the aforementioned chemical formulas A to C; and Substituted or unsubstituted phenyl group, substituted or unsubstituted biphenyl group, substituted or unsubstituted terphenyl group, substituted or unsubstituted pentarenyl group, substituted or unsubstituted indenyl group, substituted or unsubstituted naphthyl group, substituted or unsubstituted azurenyl group, substituted or unsubstituted heptarenyl group, substituted or unsubstituted indacenyl group, substituted or unsubstituted acenaphthyl group, substituted or unsubstituted fluorenyl group, substituted or unsubstituted spirofluorenyl group, substituted or unsubstituted benzofluorenyl group, substituted or unsubstituted diben Zofluorenyl group, substituted or unsubstituted phenalenyl group, substituted or unsubstituted phenantrenyl group, substituted or unsubstituted anthracenyl group, substituted or unsubstituted fluoranthenyl group, substituted or unsubstituted triphenylenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted naphthacenyl group, substituted or unsubstituted picenyl group, substituted or unsubstituted perilenyl group, substituted or unsubstituted pentaphenyl group, substituted or unsubstituted hexacenyl group, substituted or unsubstituted pentacenyl group, substituted or unsubstituted rubicenyl group, substituted or unsubstituted coronenyl group, substituted or unsubstituted ovalenyl group, substituted or unsubstituted pyrrolyl group, substituted or unsubstituted thiophenyl group, substituted or unsubstituted furanyl group, substituted or unsubstituted imidazolyl group, substituted or unsubstituted pyrazolyl group, substituted or unsubstituted thiazolyl group, substituted or unsubstituted isothiazolyl group, substituted or unsubstituted oxazolyl group, substituted or unsubstituted isoxazolyl group, substituted or unsubstituted pyridinyl group, substituted or Unsubstituted pyrimidinyl group, substituted or unsubstituted pyridadinyl group, substituted or unsubstituted isoindolyl group, substituted or unsubstituted indolyl group, substituted or unsubstituted indazolyl group, substituted or unsubstituted prinyl group, substituted or unsubstituted quinolinyl group, substituted or unsubstituted isoquinolinyl group, substituted or unsubstituted benzoquinolinyl group, substituted or unsubstituted phthalazinyl group, substituted or unsubstituted naphthylidinyl group, substituted or unsubstituted quinoxalinyl group, substituted or unsubstituted quinazolinyl group, substituted or unsubstituted synnolinyl group,Substituted or unsubstituted carbazolyl group, substituted or unsubstituted phenanthridine group, substituted or unsubstituted acridinyl group, substituted or unsubstituted phenanthrolinyl group, substituted or unsubstituted phenazinyl group, substituted or unsubstituted benzimidazolyl group, substituted or unsubstituted benzofuranyl group, substituted or unsubstituted benzothiophenyl group, substituted or unsubstituted isobenzothiazolyl group, substituted or unsubstituted benzoxazolyl group, substituted or unsubstituted isobenzoxazolyl group, substituted or unsubstituted triazolyl group, The group is selected from the group consisting of substituted or unsubstituted tetrazolyl groups, substituted or unsubstituted oxadiazolyl groups, substituted or unsubstituted triazinyl groups, substituted or unsubstituted dibenzofuranyl groups, substituted or unsubstituted dibenzothiophenyl groups, substituted or unsubstituted benzocarbazolyl groups, substituted or unsubstituted dibenzocarbazolyl groups, substituted or unsubstituted dibenzosilolyl groups, substituted or unsubstituted thiadiazolyl groups, substituted or unsubstituted imidazopyrimidinyl groups, and substituted or unsubstituted imidazopyrimidinyl groups.

[0064] The aforementioned Ar 21 ~Ar 24 Ar 31 ~Ar 34 and Ar 41 ~Ar 43 Preferably, these are, independently of each other, a group represented by the chemical formulas A to C, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted quinazolinyl group, or a substituted or unsubstituted carbazolyl group. In this case, the substituents that may be present are C6-C 20 Arylamino group, C1-C 20 Alkyl alkyl group, C6-C 20 An aryl group is preferred, and a diphenylamino group, a C1-C4 alkyl group, a phenyl group, or a naphthyl group is more preferred.

[0065] In the aforementioned chemical formulas 1-3, 2H-1, and 3-2, R 21 ~R 24 , R31 , and R 41 ~R 44 These are, independently of each other, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or its salt, a sulfonic acid group or its salt, a phosphate group or its salt, and a substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, and -Si(Q 43 )(Q 44 )(Q 45 Selected from the group consisting of ). Q 43 ~Q 45 See the explanation for Q1 in this specification.

[0066] For example, in the above chemical formulas 1-3, 2H-1 and 3-2, R 21 ~R 24 , R 31 , and R 41 ~R 44 They are independent of each other, Deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 20 Alkyl groups and substituted or unsubstituted C1-C 20 Alkoxy group; Substituted or unsubstituted phenyl group, substituted or unsubstituted biphenyl group, substituted or unsubstituted terphenyl group, substituted or unsubstituted naphthyl group, substituted or unsubstituted fluorenyl group, substituted or unsubstituted spiro-fluorenyl group, substituted or unsubstituted benzofluorenyl group, substituted or unsubstituted dibenzofluorenyl group, substituted or unsubstituted phenantrenyl group, substituted or unsubstituted anthracenyl group, substituted or unsubstituted triphenylenyl group, substituted or unsubstituted pyrenyl group, substituted or unsubstituted chrysenyl group, substituted or unsubstituted pyrrolyl group, substituted or unsubstituted thiophenyl group, substituted or unsubstituted furanyl group, substituted or unsubstituted imidazolyl group, substituted or unsubstituted pyrazolyl group, substituted or unsubstituted thiazolyl group, substituted or unsubstituted isothiazolyl group, substituted or unsubstituted oxazolyl group, substituted or unsubstituted isoxazolyl group, substituted or unsubstituted pyridinyl group, Substituting or unsubstituted pyrazinyl groups, substituted or unsubstituted pyrimidinyl groups, substituted or unsubstituted pyridadinyl groups, substituted or unsubstituted quinolinyl groups, substituted or unsubstituted isoquinolinyl groups, substituted or unsubstituted benzoquinolinyl groups, substituted or unsubstituted quinoxalinyl groups, substituted or unsubstituted quinazolinyl groups, substituted or unsubstituted carbazolyl groups, substituted or unsubstituted benzimidazolyl groups, substituted or unsubstituted benzofuranyl groups, substituted or unsubstituted benzothiophenyl groups, substituted or unsubstituted isobenzothiazolyl groups, substituted or unsubstituted benzoxazolyl groups, substituted or unsubstituted isobenzoxazolyl groups, substituted or unsubstituted oxadiazolyl groups, substituted or unsubstituted triazinyl groups, substituted or unsubstituted dibenzofuranyl groups, substituted or unsubstituted dibenzothiophenyl groups, substituted or unsubstituted imidazopyridinyl groups and substituted or unsubstituted imidazopyrimidinyl groups; and -4(Q 43 )(Q 44 )(Q 45 Selected from the group consisting of );

[0067] In chemical formula 2H-1, R 31It is preferable that this is a substituted or unsubstituted biphenyl group.

[0068] In the aforementioned chemical formulas 1-3,2H-1 and 3-2, c1, c4, e1, h1, and h4 are independent integers between 0 and 4, and c2, c3, h2, and h3 may be independent integers between 0 and 3.

[0069] c1 is R in the above chemical formulas 1-3. 21 This indicates the number of such elements, and if c1 is 2 or more, then R is 2 or more. 21 These may be the same as or different from each other. c2 to c4 will be understood by referring to the structures of chemical formulas 1-3 and the description of c1. c1 to c4 are independent of each other, preferably integers from 0 to 2, more preferably 0 or 1, and even more preferably 0.

[0070] e1 is R in the chemical formula 2H-1. 31 This indicates the number of such elements, and if e1 is 2 or more, then R is 2 or more. 31 These may be the same or different from each other. e1 is preferably an integer between 1 and 3, more preferably 1 or 2, and even more preferably 1.

[0071] h1 is R in chemical formula 3-2. 41 This indicates the number of R41s, and if h1 is 2 or more, the 2 or more R41s may be the same or different from each other. h2 to h4 will be understood by referring to the structure of chemical formula 3-2 and the description of h1. h1 to h4 are independent of each other and are preferably integers from 0 to 2, more preferably 0 or 1, and even more preferably 0.

[0072] In the above chemical formula 1-1, Ar 21 ~Ar 23 In this, at least one is a group represented by any of the chemical formulas A to C, In the above chemical formulas 1 and 2, Ar 21~Ar 24 At least one of them is a group represented by any of the chemical formulas A to C, In the chemical formulas 1-3, Ar 21 and Ar 22 At least one of them is a group represented by any of the chemical formulas A to C, <C In the chemical formula 2H-1, Ar 31 is a group represented by any of the chemical formulas A to C, In the chemical formula 2D-1, Ar 31 ~Ar 34 At least one of them is a group represented by any of the chemical formulas A to C, In the chemical formula 2D-2, Ar 31 ~Ar 33 At least one of them is a group represented by any of the chemical formulas A to C, In the chemical formula 3-1, Ar 41 ~Ar 43 At least one of them is a group represented by any of the chemical formulas A to C, Ar 41 ~Ar 43 The remaining groups are preferably a phenyl group or a carbazolyl group, In the chemical formula 3-2, Ar 41 and Ar 42 Among them, one is a group selected from the group consisting of the chemical formulas A to C, and the other is a substituted or unsubstituted nitrogen-containing heterocyclic group containing *=N-*'. Examples of the nitrogen-containing heterocyclic group containing *=N-*' include a quinazolinyl group, and it may be substituted with a C6-C 20 aryl group such as a phenyl group or a naphthyl group.

[0073] That is, the compounds represented by the chemical formulas 1-1, 1-2, 1-3, 2H-1, 2D-1, 2D-2, 3-1 and 3-2 necessarily contain a group represented by any of the chemical formulas A to C. <C

[0074] <C According to one embodiment of the present invention, the first compound is a compound represented by any of the chemical formulas 1-1 to 1-3, The second compound is a compound represented by any of the chemical formulas 2H-1, 2D-1, and 2D-2, The third compound is a compound represented by chemical formula 3-1 or 3-2, comprising a nitrogen-containing heterocyclic group having *=N-*'.

[0075] According to embodiments of the present invention, the first to third compounds may be compounds independently represented by any of the following chemical formulas: 1-1(1) to 1-1(4), 1-2(1), 1-3(1), 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), 2D-2(2), 3-1(1) to 3-1(2), and 3-2(1).

[0076] [ka]

[0077] [ka]

[0078] [ka]

[0079] [ka]

[0080] [ka]

[0081] [ka]

[0082] In the aforementioned chemical formulas 1-1(1) to 1-1(4), 1-2(1), 1-3(1), 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), 2D-2(2), 3-1(1), 3-1(2), and 3-2(1), L 21 ~L 24 , L 31 ~L 34 , L 41 ~L 43 , b1~b5, d1~d4, g1~g3, Ar 21 ~Ar 24 Ar 31 ~Ar 34 Ar 41 ~Ar 43 , R 21 ~R 24 , R 31 , R 41 ~R 44 c1-c4, e1, h1-h4, Q1 and Q2 refer to what is described herein.

[0083] In the aforementioned chemical formulas 1-1(1) to 1-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2), Z1 to Z5 are independent of each other. Deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, and substituted or unsubstituted C1-C 60 Alkoxy group; Substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups; and -4(Q 33 )(Q 34 )(Q 35 Selected from the group consisting of );

[0084] The aforementioned Q 33 ~Q 35 See the explanation for Q1 in this specification.

[0085] In the chemical formulas 1-1(1) to 1-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2), f1 is an integer between 0 and 4, f2 is an integer between 0 and 3, f3 is an integer between 0 and 5, and f4 is an integer between 0 and 2. f1 to f4 are preferably 0 or 1, and more preferably 0.

[0086] In the above chemical formula 1-1(1), Ar 22 and Ar 23 At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 1-1(2), Ar 22 and Ar 23 At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 1-1(3), Ar 21 ~Ar 23 At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 1-1(4), Ar 21 ~Ar 23 At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 1-2(1), Ar 21 ~Ar 24At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 1-3(1), Ar 21 and Ar 22 At least one of these is a group represented by any of the chemical formulas A to C, In the chemical formulas 2H-1(1) to 2H-1(4), Ar 31 This is a group represented by any of the above chemical formulas A to C, In the chemical formula 2D-1(1), Ar 31 ~Ar 34 At least one of these is a group represented by any of the above chemical formulas A to C, In the chemical formula 2D-1(2), Ar 31 ~Ar 34 At least one of these is a group represented by any of the chemical formulas A to C, In the chemical formula 2D-1(3), Ar 31 ~Ar 34 At least one of these is a group represented by any of the chemical formulas A to C, In the chemical formula 2D-1(4), Ar 31 ~Ar 34 At least one of these is a group represented by any of the chemical formulas A to C, In the chemical formula 2D-2(1), Ar 32 and Ar 33 At least one of these is a group represented by any of the chemical formulas A to C, In the chemical formula 2D-2(2), Ar 32 and Ar 33 At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 3-1(1), Ar 41 ~Ar 43 At least one of these is a group represented by any of the chemical formulas A to C, In the above chemical formula 3-1(2), Ar 41 ~Ar 43 At least one of them is a group represented by any of the above chemical formulas A to C, and Ar 41 ~Ar 43The remaining group is preferably a phenyl group or a carbazolyl group. In the above chemical formula 3-2(1), Ar 41 and Ar 42 In this configuration, one is a group represented by any of the chemical formulas A to C, and the other is a nitrogen-containing heterocyclic group containing *=N-*'.

[0087] In other words, the compounds represented by the chemical formulas 1-1(1) to 1-1(4), 1-2(1), 1-3(1), 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), 2D-2(2), 3-1(1), 3-1(2), and 3-2(1) all contain a group represented by any of the chemical formulas A to C.

[0088] According to one embodiment, the first compound is a compound represented by any of the following chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1), preferably any of 1-1(3), 1-2(1), 1-3(1), or 1-2(1). The second compound is a compound represented by any of the following chemical formulas: 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2), preferably 2D-1(1) or 2H-1(4). The third compound is a compound represented by any of the following chemical formulas 3-1(1), 3-1(2), and 3-2(1), preferably 3-1(2).

[0089] According to one embodiment of the present invention, the first to third compounds may be compounds independently selected from the group consisting of the following compounds 1-1 to 1-12, 2-1 to 2-10, 3-1 to 3-12, 4-1 to 4-12, and 5-1 to 5-9.

[0090] [ka]

[0091] [ka]

[0092] According to one embodiment of the present invention, The first compound is a compound selected from the group consisting of compounds 1-1 to 1-12 and 2-1 to 2-10. The second compound is a compound selected from the group consisting of compounds 3-1 to 3-12 and 4-1 to 4-12. The third compound may be a compound selected from the group consisting of compounds 5-1 to 5-9.

[0093] The minimum triplet energy of at least two compounds selected from the group consisting of the first to third compounds may be 2.4 eV or higher, for example, 2.5 eV or higher. When the minimum triplet energy satisfies the above range, for example, in a fluorescent organic light-emitting device, an improvement in luminescence efficiency due to TTF (triplet-triplet fusion) can be expected, and in a phosphorescent organic light-emitting device, the transition of triplet excitons formed in the light-emitting layer can be prevented, thus preventing a decrease in device efficiency.

[0094] On the other hand, the first to third compounds can have an asymmetric structure.

[0095] For example, in the above chemical formula 1-1, -(L 21 ) b1 -Ar 21 ,-(L 22 ) b2 -Ar 22 and (L 23 ) b3 -Ar 23 Except when they are identical to each other, in the above chemical formulas 1-2, -(L 21 ) b1 -Ar 21 ,-(L 22 ) b2 -Ar 22 ,-(L 23 ) b3 -Ar 23 and (L 24 ) b4 -Ar 24Except when they are identical to each other, in the above chemical formula 2D-1, -(L 31 ) d1 -Ar 31 ,-(L 32 ) d2 -Ar 32 ,-(L 33 ) d3 -Ar 33 and (L 34 ) d4 -Ar 34 Except when they are identical to each other, in the above chemical formula 2D-1, -(L 31 ) d1 -Ar 31 ,-(L 32 ) d2 -Ar 32 and (L 33 ) d3 -Ar 33 Except when they are identical to each other, in the above chemical formula 3-1, -(L 41 ) g1 -Ar 41 ,-(L 42 ) g2 -Ar 42 and (L 43 ) g3 -Ar 43 Except when they are identical to each other.

[0096] As another example, in the above chemical formula 1-3, -(L 23 ) b3 The two carbazole moieties flanking the - are distinct from each other, and in the aforementioned chemical formula 2H-1, -(L 31 )- sandwiched (R 31 ) e1 and Ar 31 These are different from each other, and in the above chemical formula 3-2, -(L 43 ) g3 The two carbazole portions separated by the hyphen may be different from each other.

[0097] The first to third compounds, by having such asymmetric structures, can reduce the degree of association and aggregation of molecules within the organic layer. Therefore, for example, when the first to third compounds are used as matrix materials in the layers containing them, device degradation can be prevented and device life can be expected to be improved.

[0098] According to one embodiment, the first compound is a compound represented by any of the chemical formulas 1-1 to 1-3, The second compound is a compound represented by the chemical formula 2H-1, The third compound is the compound represented by the chemical formula 3-1 or 3-2.

[0099] According to other embodiments, the first compound is a compound represented by any of the chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1), The second compound is a compound represented by any of the chemical formulas 2H-1(1) to 2H-1(4), The third compound is a compound represented by any of the chemical formulas 3-1(1), 3-1(2), and 3-2(1).

[0100] In the organic light-emitting element according to one embodiment of the present invention, from the viewpoint of improving efficiency and lifespan, it is preferable that the second layer is a light-emitting layer, the second layer further contains a dopant, and the first and third layers are adjacent to the second layer, respectively. For example, the dopant may be a phosphorescent dopant. Examples of the dopant will be discussed later.

[0101] According to one embodiment, the first compound is a compound represented by any of the chemical formulas 1-1 to 1-3, The second compound is a compound represented by the chemical formula 2D-1 or 2D-2, The third compound is the compound represented by the chemical formula 3-1 or 3-2.

[0102] According to other embodiments, the first compound is a compound represented by any of the chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1), The second compound is a compound represented by any of the chemical formulas 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2), The third compound is a compound represented by any of the chemical formulas 3-1(1), 3-1(2), and 3-2(1).

[0103] In another embodiment of the present invention, the organic light-emitting element is preferably such that, from the viewpoint of improving efficiency and lifespan, the second layer is a light-emitting layer, the second layer further includes a host, and the first and third layers are adjacent to the second layer, respectively. For example, the host may be a fluorescent host. Examples of the host are described below.

[0104] According to one embodiment, The first compound and the second compound are compounds that are independently represented by any of the chemical formulas 1-1 to 1-3, The first compound and the second compound are different from each other. The third compound is a compound represented by any of the chemical formulas 2H-1, 2D-1, 2D-2, 3-1, and 3-2.

[0105] For example, the first compound and the second compound are compounds that are independently represented by any of the chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1). The first compound and the second compound are different from each other. The third compound is a compound represented by any of the following chemical formulas: 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), 2D-2(2), 3-1(1), 3-1(2), and 3-2(1).

[0106] According to other embodiments, The first compound and the second compound are compounds that are independently represented by any of the chemical formulas 1-1 to 1-3, The first compound and the second compound are different from each other. The third compound is a compound represented by any of the chemical formulas 2H-1, 3-1, and 3-2.

[0107] In further embodiments, the first compound and the second compound are independently compounds represented by any of the chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1). The first compound and the second compound are different from each other. The third compound is a compound represented by any of the chemical formulas 2H-1(1) to 2H-1(4), 3-1(1), 3-1(2), and 3-2(1).

[0108] In yet another embodiment of the present invention, the organic light-emitting element may, from the viewpoint of improving efficiency and lifespan, have a third layer that is a light-emitting layer, further containing a dopant, and the second layer adjacent to the third layer. For example, the dopant may be a phosphorescent dopant.

[0109] According to other embodiments, the first compound and the second compound are compounds represented by any one of the chemical formulas 1-1 to 1-3, independently of each other. The first compound and the second compound are different from each other. The third compound is the compound represented by the chemical formula 2D-1 or 2D-2.

[0110] In further embodiments, the first compound and the second compound are compounds represented by any of the chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1), The first and second compounds are different from each other. The third compound is a compound represented by any of the chemical formulas 2D-1(1) to 2D-1(4), 2D-2(1), 2D-2(2), 3-1(1), 3-1(2), and 3-2(1).

[0111] In yet another embodiment of the present invention, from the viewpoint of improving efficiency and lifespan, it is preferable that the third layer is a light-emitting layer, the third layer further contains a host, and the second layer is adjacent to the third layer.

[0112] For example, the host may be a fluorescent host.

[0113] According to one embodiment of the present invention, The first compound and the second compound are, independently of each other, compounds represented by any of the compounds 1-1 to 1-12 and 2-1 to 2-10. The first compound and the second compound are different from each other. The third compound is a compound selected from the group consisting of compounds 3-1 to 3-12, 4-1 to 4-12, and 5-1 to 5-9.

[0114] The hole transport layer of the organic light-emitting device according to the present invention preferably contains one or more compounds represented by any of the chemical formulas 1-1 to 1-3. More specifically, the hole transport layer of the organic light-emitting device according to the present invention preferably contains one or more compounds represented by any of the chemical formulas 1-1(1) to 1-1(4), 1-2(1), and 1-3(1). More specifically, the hole transport layer of the organic light-emitting device according to the present invention preferably contains one or more compounds represented by any of the compounds 1-1 to 1-12 and 2-1 to 2-10.

[0115] The electron transport layer of the organic light-emitting element according to the present invention preferably contains one or more compounds represented by either chemical formula 3-1 or 3-2, and more preferably contains one or more compounds represented by chemical formula 3-2. More specifically, the electron transport layer of the organic light-emitting element according to an embodiment of the present invention preferably contains one or more compounds represented by either chemical formula 3-1(1) to 3-1(2) and 3-2(1), and more preferably contains one or more compounds represented by chemical formula 3-1(2). More specifically, the electron transport layer of the organic light-emitting element according to the present invention preferably contains one or more compounds selected from the group consisting of compounds 5-1 to 5-8.

[0116] The light-emitting layer of the organic light-emitting device according to the present invention preferably contains one or more compounds represented by any of the chemical formulas 2H-1, 3-1, and 3-2 as a host. More specifically, the light-emitting layer of the organic light-emitting device according to the present invention preferably contains one or more compounds represented by any of the chemical formulas 2H-1(1) to 2H-1(4), 3-1(1) to 3-1(2), and 3-2(1) as a host. More specifically, the organic light-emitting device according to the present invention preferably contains one or more compounds selected from the group consisting of compounds 4-1 to 4-12 and 5-1 to 5-9 as a host.

[0117] The light-emitting layer of the organic light-emitting element according to the present invention preferably contains one or more compounds represented by either chemical formula 2D-1 or 2D-2 as a dopant, and more preferably contains one or more compounds represented by chemical formula 2D-1 as a dopant. More specifically, the light-emitting layer of the organic light-emitting element according to the present invention preferably contains one or more compounds represented by either chemical formula 2D-1(1) to 2D-1(4) and 2D-2(1) to 2D-2(2) as a dopant, and more preferably contains one or more compounds represented by chemical formula 2D-1(1) as a dopant. More specifically, the organic light-emitting element according to the present invention preferably contains at least one compound selected from the group consisting of compounds 3-1 to 3-10 as a dopant.

[0118] The aforementioned organic light-emitting element can achieve the effect of improving the stability and lifespan of the organic light-emitting element by introducing a compound containing a group represented by any of the chemical formulas A to C into each of the first to third layers, thereby facilitating charge transfer due to molecular structural similarity, improving the interfacial properties between the three layers, and thus improving the stability and lifespan of the organic light-emitting element.

[0119] The structure and manufacturing method of an organic light-emitting element according to one embodiment of the present invention will be described below with reference to Figure 1.

[0120] Figure 1 is a schematic diagram showing the structure of one embodiment of the organic light-emitting element.

[0121] The organic light-emitting element 10 in Figure 1 has a structure in which a first electrode 110, a first layer 130, a second layer 150, a third layer 170, and a second electrode 190 are stacked in that order. One or more other layers, such as an electron injection layer or an electron transport layer, may be present between the third layer 170 and the second electrode 190.

[0122] A substrate is additionally placed below the first electrode 110 or above the second electrode 190 in Figure 1. The substrate can be a glass substrate or a transparent plastic substrate, which have excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and waterproofness.

[0123] According to one embodiment of the present invention, the first layer 130 is a hole transport layer, the second layer 150 is an emissive layer, and the third layer 170 is an electron transport layer.

[0124] According to another embodiment of the present invention, the first layer 130 and the second layer 150 are both hole transport layers, and the third layer 170 is a light-emitting layer.

[0125] The first electrode 110 is formed, for example, by providing a material for the first electrode on the upper part of a substrate using a vapor deposition method or a sputtering method. When the first electrode 110 is an anode, the material for the first electrode is selected from materials having a high work function so that hole injection is facilitated. The first electrode 110 may be a reflective electrode, a semi-transparent electrode, or a transmissive electrode. As the material for the first electrode, transparent and highly conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), and zinc oxide (ZnO) can be used. Alternatively, in order to form a first electrode 110 that is a semi-transparent or reflective electrode, at least one of magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), and magnesium-silver (Mg-Ag) can be selected as the material for the first electrode.

[0126] The first electrode 110 may have a single layer or a multilayer structure having multiple layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO, but is not limited to this.

[0127] A first layer 130, a second layer 150, and a third layer 170 are stacked in order on top of the first electrode 110.

[0128] The first layer contains the first compound, the second layer contains the second compound, and the third layer contains the third compound. Descriptions of the first, second, and third compounds are provided herein.

[0129] The method for depositing the first layer is not particularly limited, and a variety of methods can be used, such as vacuum deposition, spin coating, casting, LB (Langmuir-Blodgett) method, inkjet printing, laser printing, and laser thermal imaging (LITI). The same applies to the methods for depositing the second and third layers.

[0130] Although not shown in Figure 1, a hole injection layer may be additionally provided between the first electrode and the first layer.

[0131] If the organic light-emitting element includes a hole injection layer, the hole injection layer can be formed on the upper part of the first electrode 110 using a variety of methods such as vacuum deposition, spin coating, casting, LB (Langmuir-Blodgett) method, inkjet printing, laser printing, and laser thermal imaging (LITI).

[0132] When forming a hole injection layer by vacuum deposition, the deposition conditions are, for example, a deposition temperature of 100-500°C, and 10 -8 ~10 -3 The vacuum level of torr and the deposition rate within the range of 0.01 to 100 Å / sec are selected considering the compound for the hole injection layer to be deposited and the hole injection layer structure to be formed.

[0133] When forming a hole injection layer by spin coating, the coating conditions are selected within the range of a coating speed of 2,000 to 5,000 rpm and a heat treatment temperature of 80 to 200°C, taking into consideration the compound for the hole injection layer to be deposited and the structure of the hole injection layer to be formed.

[0134] The thickness of the hole injection layer may be 100 to 10,000 Å, for example, 100 to 1,000 Å.

[0135] The method for forming the first, second, and third layers is the same as the method for forming the hole injection layer.

[0136] The first layer may further contain, in addition to the first compound, at least one selected from the group consisting of m-MTDATA, TDATA, 2-TNATA, NPB, β-NPB, TPD, spiro-TPD, spiro-NPB, methylated NPB, TAPC, HMTPD, 4,4',4”-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (Pani / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (Pani / CSA), and polyaniline / poly(4-styrenesulfonate) (PANI / PSS).

[0137] [ka]

[0138] In addition to the substances described above, the first layer may further contain a charge-generating material to improve conductivity. The charge-generating material is uniformly or non-uniformly dispersed within the first layer.

[0139] The charge-generating material may be, for example, a p-dopant. The p-dopant may be, but is not limited to, a quinone derivative, a metal oxide, or a cyano group-containing compound. For example, non-limiting examples of the p-dopant include, but are not limited to, quinone derivatives such as tetracyanoquinone dimethane (TCNQ) and compound HT-D2; metal oxides such as tungsten oxide and molybdenum oxide; and compound HT-D1, described below.

[0140] [ka]

[0141] If the first layer is a hole transport layer, its thickness is preferably 50 to 2,000 Å, more preferably 100 to 1,500 Å, even more preferably 500 to 1,500 Å, and particularly preferably 1,000 to 1,500 Å.

[0142] According to one embodiment, it is preferable that the second layer is a light-emitting layer, and that the first layer and the third layer are adjacent to the second layer, respectively.

[0143] In another embodiment, it is preferable that the third layer is a light-emitting layer and the second layer is adjacent to the third layer.

[0144] If the organic light-emitting element 10 is a full-color organic light-emitting element, the light-emitting layer is patterned as a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer for each individual sub-pixel. Alternatively, the light-emitting layer may have a structure in which a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer are stacked, or a structure in which a red light-emitting material, a green light-emitting material, and a blue light-emitting material are mixed without layer separation, and can emit white light.

[0145] For example, if the second layer is a light-emitting layer, the light-emitting layer may further contain a host or a dopant in addition to the second compound. In other words, if the second compound is used as a host, it may further contain a dopant, and if the second compound is used as a dopant, it may further contain a host.

[0146] As another example, if the third layer is a light-emitting layer, the light-emitting layer may further contain a host or a dopant in addition to the third compound. In other words, if the third compound is used as a host, it may further contain a dopant, and if the third compound is used as a dopant, it may further contain a host.

[0147] The host may contain a compound represented by the following chemical formula 301.

[0148] [ka]

[0149] In the aforementioned chemical formula 301, Ar 301 teeth, The group is derived from a compound selected from the group consisting of substituted or unsubstituted naphthalene, substituted or unsubstituted heptalene, substituted or unsubstituted fluorene, substituted or unsubstituted spirofluorene, substituted or unsubstituted benzofluorene, substituted or unsubstituted dibenzofluorene, substituted or unsubstituted phenalene, substituted or unsubstituted phenanthrene, substituted or unsubstituted anthracene, substituted or unsubstituted fluorantene, substituted or unsubstituted triphenylene, substituted or unsubstituted pyrene, substituted or unsubstituted chrysene, substituted or unsubstituted naphthacene, substituted or unsubstituted picene, substituted or unsubstituted perylene, substituted or unsubstituted pentaphene, and substituted or unsubstituted indenoanthracene. L 301 is the aforementioned L 21 It is similar to, R 301 teeth, Substituted or unsubstituted C1-C 20 Alkyl groups and substituted or unsubstituted C1-C 20 Alkoxy group; Selected from the group consisting of substituted or unsubstituted phenyl groups, substituted or unsubstituted biphenyl groups, substituted or unsubstituted terphenyl groups, substituted or unsubstituted naphthyl groups, substituted or unsubstituted fluorenyl groups, substituted or unsubstituted spiro-fluorenyl groups, substituted or unsubstituted benzofluorenyl groups, substituted or unsubstituted dibenzofluorenyl groups, substituted or unsubstituted phenantrenyl groups, substituted or unsubstituted anthracenyl groups, substituted or unsubstituted pyrenyl groups, substituted or unsubstituted chrysenyl groups, substituted or unsubstituted pyridinyl groups, substituted or unsubstituted pyrazinyl groups, substituted or unsubstituted pyrimidinyl groups, substituted or unsubstituted pyridadinyl groups, substituted or unsubstituted quinolinyl groups, substituted or unsubstituted isoquinolinyl groups, substituted or unsubstituted quinoxalinyl groups, substituted or unsubstituted quinazolinyl groups, substituted or unsubstituted carbazolyl groups, and substituted or unsubstituted triazinyl groups. xb1 is an integer between 0 and 3. xb2 is an integer from 1 to 4. If xb2 is 2 or greater, [(L 301 ) xb1 -R 301 ] xb2 They may be the same or different.

[0150] For example, in the above chemical formula 301, L 301 teeth, Selected from the group consisting of substituted or unsubstituted phenylene groups, substituted or unsubstituted naphthylene groups, substituted or unsubstituted fluorenylene groups, substituted or unsubstituted spiro-fluorenylene groups, substituted or unsubstituted benzofluorenylene groups, substituted or unsubstituted dibenzofluorenylene groups, substituted or unsubstituted phenantrenylene groups, substituted or unsubstituted anthracenylene groups, substituted or unsubstituted pyrenylene groups, and substituted or unsubstituted chrysenylene groups, R 301 teeth, Substituted or unsubstituted C1-C 20 Alkyl groups and substituted or unsubstituted C1-C 20 Alkoxy group; and A group selected from, but not limited to, substituted or unsubstituted phenyl groups, substituted or unsubstituted biphenyl groups, substituted or unsubstituted terphenyl groups, substituted or unsubstituted naphthyl groups, substituted or unsubstituted fluorenyl groups, substituted or unsubstituted spiro-fluorenyl groups, substituted or unsubstituted benzofluorenyl groups, substituted or unsubstituted dibenzofluorenyl groups, substituted or unsubstituted phenantrenyl groups, substituted or unsubstituted anthracenyl groups, substituted or unsubstituted pyrenyl groups, and chrysenyl groups.

[0151] For example, the host may contain a compound represented by the following chemical formula 301A:

[0152] [ka]

[0153] The compound represented by the chemical formula 301 may contain, but is not limited to, at least one of the following compounds H1 to H49:

[0154] [ka]

[0155] [ka]

[0156] [ka]

[0157] [ka]

[0158] Alternatively, the host may contain, but is not limited to, one of the following compounds:

[0159] [ka]

[0160] The aforementioned dopant may be a phosphorescent dopant.

[0161] The phosphorescent dopant may contain an organometallic complex represented by the following chemical formula 401:

[0162] [ka]

[0163] In the aforementioned chemical formula 401, M is selected from the group consisting of iridium (Ir), platinum (Pt), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), and thulium (Tm). X 401 ~X 404 These are, independently of each other, nitrogen atoms or carbon atoms. A 401 Ring and A 402The rings independently contain substituted or unsubstituted benzene, substituted or unsubstituted naphthalene, substituted or unsubstituted fluorene, substituted or unsubstituted spirofluorene, substituted or unsubstituted indene, substituted or unsubstituted pyrrole, substituted or unsubstituted thiophene, substituted or unsubstituted furan, substituted or unsubstituted imidazole, substituted or unsubstituted pyrazole, substituted or unsubstituted thiazole, substituted or unsubstituted isothiazole, substituted or unsubstituted oxazole, substituted or unsubstituted isoxazole, substituted or unsubstituted pyridine, substituted or unsubstituted pyrazine, substituted or unsubstituted pyrimidine, substituted or unsubstituted pyridazine, and substituted or unsubstituted quinoline. Selected from the group consisting of substituted or unsubstituted isoquinoline, substituted or unsubstituted benzoquinoline, substituted or unsubstituted quinoxaline, substituted or unsubstituted quinazoline, substituted or unsubstituted carbazole, substituted or unsubstituted benzimidazole, substituted or unsubstituted benzofuran, substituted or unsubstituted benzothiophene, substituted or unsubstituted isobenzothiophene, substituted or unsubstituted benzoxazole, substituted or unsubstituted isobenzoxazole, substituted or unsubstituted triazole, substituted or unsubstituted oxadiazole, substituted or unsubstituted triazine, substituted or unsubstituted dibenzofuran, and substituted or unsubstituted dibenzothiophene. L 401 It is an organic ligand, xc1 is an integer between 1 and 3. xc2 is an integer between 0 and 3.

[0164] Said L 401 This may be any monovalent, divalent, or trivalent organic ligand. For example, L 401These ligands are selected from, but are not limited to, the group consisting of halogen ligands (e.g., Cl, F), diketone ligands (e.g., acetylacetonate, 1,3-diphenyl-1,3-propanedione, 2,2,6,6-tetramethyl-3,5-heptanedione, hexafluoroacetonate), carboxylic acid ligands (e.g., picolinates, dimethyl-3-pyrazole carboxylate, benzoates), carbon monooxide ligands, isonitrile ligands, cyanoligands, and phosphite ligands (e.g., phosphines, phosphites).

[0165] In the aforementioned chemical formula 401, A 401 If has two or more substituents, A 401 Two or more substituents can be bonded to each other to form a saturated or unsaturated ring.

[0166] In the aforementioned chemical formula 401, A 402 If has two or more substituents, A 402 Two or more substituents can be bonded to each other to form a saturated or unsaturated ring.

[0167] In the aforementioned chemical formula 401, if xc1 is 2 or more, the ligands represented by the following chemical formulas in chemical formula 401 may be the same or different from each other.

[0168] [ka]

[0169] In the aforementioned chemical formula 401, if xc1 is 2 or more, A 401 and A 402 Each of these is the A of other adjacent ligands. 401 and A 402 These are directly connected or linked to a linking group (for example, a C1-C5 alkylene group, -N(R')- (where R' is C1-C 10 Alkyl or C6-C 20 They are linked by an aryl group or a -C(=O)- group.

[0170] The phosphorescent dopant is selected, for example, from the group consisting of compounds PD1 to PD21 and PD76, but is not limited to these:

[0171] [ka]

[0172] [ka]

[0173] [ka]

[0174] [ka]

[0175] For example, if the second layer is a light-emitting layer and the light-emitting layer contains the second compound and the dopant, the dopant content is selected from, but is not limited to, 0.01 to 15 parts by weight, 1 to 10 parts by weight, or 5 to 10 parts by weight per 100 parts by weight of the second compound.

[0176] As another example, if the second layer is a light-emitting layer and the light-emitting layer contains the host and the second compound, the content of the second compound is selected from, but is not limited to, 0.01 to 15 parts by weight, 1 to 10 parts by weight, or 5 to 10 parts by weight per 100 parts by weight of the host.

[0177] As yet another example, if the third layer is a light-emitting layer and the light-emitting layer contains the host and the third compound, the content of the third compound is selected from, but is not limited to, 0.01 to 15 parts by weight, 1 to 10 parts by weight, or 5 to 10 parts by weight per 100 parts by weight of the host.

[0178] As yet another example, if the third layer is a light-emitting layer and the light-emitting layer contains the dopant and the third compound, the content of the third compound is selected from, but is not limited to, 0.01 to 15 parts by weight, 1 to 10 parts by weight, or 5 to 10 parts by weight per 100 parts by weight of the host.

[0179] The thickness of the light-emitting layer is preferably 100 to 1,000 Å, more preferably 200 to 600 Å, and even more preferably 300 to 500 Å. When the thickness of the light-emitting layer satisfies the above range, excellent light-emitting characteristics can be achieved without substantially increasing the driving voltage.

[0180] Although not shown in Figure 1, if the second layer is an emissive layer, an electron injection layer is further provided between the second electrode and the third layer to facilitate electron injection. The electron injection layer is formed on top of the third layer using a variety of methods such as vacuum deposition, spin coating, casting, LB method, inkjet printing, laser printing, and laser thermal transfer (LITI). When forming the electron injection layer by vacuum deposition and spin coating, the deposition and coating conditions for the electron injection layer refer to the deposition and coating conditions for the hole injection layer.

[0181] The electron injection layer may contain at least one selected from the group consisting of LiF, NaCl, CsF, Li2O, BaO, and LiQ.

[0182] The thickness of the electron injection layer is preferably 1 to 100 Å, more preferably 3 to 90 Å, and even more preferably 10 to 50 Å. When the thickness of the electron injection layer satisfies the above range, satisfactory electron injection characteristics can be obtained without substantially increasing the driving voltage.

[0183] In another embodiment, if the third layer is a light-emitting layer, at least one layer selected from the group consisting of an electron transport layer and an electron injection layer is further provided between the third layer and the second electrode. See above for a description of the electron injection layer.

[0184] The electron transport layer may include BCP, Bphen, and at least one of the following: Alq3, BAlq, TAZ, and NTAZ.

[0185] [ka]

[0186] The thickness of the electron transport layer is preferably 100 to 1,000 Å, more preferably 150 to 500 Å, and even more preferably 200 to 400 Å. When the thickness of the electron transport layer satisfies the above range, satisfactory electron transport characteristics can be obtained without substantially increasing the driving voltage. Alternatively, the second layer may be an emissive layer and the third layer may be an electron transport layer.

[0187] The electron transport layer may further contain metal-containing materials in addition to the materials described above.

[0188] The metal-containing substance may also contain a Li complex. The Li complex may, for example, contain the following compounds ET-D1 (lithium quinolate (LiQ)) or ET-D2.

[0189] [ka]

[0190] The second electrode 190 may be a cathode which is an electron injection electrode. In this case, the material for the second electrode 190 can be a metal, alloy, electrically conductive compound, or mixture thereof, which has a low work function. Specific examples of materials for the second electrode 190 include lithium (Li), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), etc. Alternatively, ITO or IZO can be used as the material for the second electrode 190. The second electrode 190 may be a semi-permeable electrode or a transmissive electrode.

[0191] In this specification, C1-C 60 Alkyl groups are C1-C 60 This refers to linear or branched aliphatic hydrocarbon monovalent groups, and specific examples include methyl, ethyl, propyl, isobutyl, sec-butyl, ter-butyl, pentyl, iso-amyl, and hexyl groups. In this specification, C1-C 60 The alkylene group is the C1-C 60 This refers to a divalent group that has the same structure as an alkyl group.

[0192] In this specification, C1-C 60 The alkoxy group is -OA 101 (Here, A 101 The above C1-C 60 It refers to a monovalent group having the chemical formula (specific examples are as described above), and specific examples include the methoxy group, ethoxy group, isopropyloxy group, etc.

[0193] In this specification, C2-C 60 The alkenyl group is the C2-C 60 This refers to a hydrocarbon group containing one or more carbon double bonds in the middle or terminal of an alkyl group, and specific examples include the ethenyl group, propenyl group, butenyl group, etc. In this specification, C2-C 60 The alkenylene group is the C2-C60 This refers to a divalent group that has the same structure as an alkenyl group.

[0194] In this specification, C2-C 60 The alkynyl group is the C2-C 60 This refers to a hydrocarbon group containing one or more carbon triple bonds in the middle or terminal of an alkyl group, and specific examples include ethynyl and propynyl groups. In this specification, C2-C 60 The alkynylene group is the C2-C 60 This refers to a divalent group that has the same structure as an alkynyl group.

[0195] In this specification, C3-C 10 Cycloalkyl groups are C3-C 10 This refers to monocyclic monovalent hydrocarbon groups, and specific examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and cycloheptyl groups. In this specification, C3-C 10 The cycloalkylene group is the C3-C 10 This refers to a divalent group having the same structure as a cycloalkyl group.

[0196] In this specification, C1-C 10 A heterocycloalkyl group is a C1-C alkyl group containing at least one heteroatom selected from the group consisting of N, O, P, and S as a ring-forming atom. 10 This refers to a monovalent monocyclic group, and specific examples include the tetrahydrofuranyl group and the tetrahydrothiophenyl group. In this specification, C1-C 10 The heterocycloalkylene group is the C1-C 10 This refers to a divalent group having the same structure as a heterocycloalkyl group.

[0197] In this specification, C3-C 10 The cycloalkenyl group is C3-C 10A monovalent monocyclic group is a group that has at least one double bond within the ring but does not possess aromaticity. Specific examples include the cyclopentenyl group, cyclohexenyl group, and cycloheptenyl group. In this specification, C3-C 10 The cycloalkenylene group is the C3-C 10 This refers to a divalent group that has the same structure as a cycloalkenyl group.

[0198] In this specification, C1-C 10 A heterocycloalkenyl group is a C1-C group containing at least one heteroatom selected from the group consisting of N, O, P, and S as a ring-forming atom. 10 It is a monovalent monocyclic group having at least one double bond within the ring. 10 Specific examples of heterocycloalkenyl groups include the 2,3-hydrofuranyl group and the 2,3-hydrothiophenyl group. In this specification, C1-C 10 The heterocycloalkenylene group is the C1-C 10 This refers to a divalent group that has the same structure as a heterocycloalkenyl group.

[0199] In this specification, C6-C 60 The aryl group is C6-C 60 This refers to a monovalent group having a carbon-ring aromatic system, C6-C 60 The arylene group is C6-C 60 This refers to a divalent group having a carbocyclic aromatic system.

[0200] Said C6-C 60 A non-condensed arylene group is a C6-C group that does not have two or more rings. 60 This refers to a divalent group having a carbon-ring aromatic system. 60 A condensed polycyclic arylene group is a C6-C group having two or more rings. 60 This refers to a divalent group having a carbocyclic aromatic system.

[0201] Said C6-C 60Specific examples of aryl groups include phenyl, naphthyl, anthracenyl, phenantrenyl, pyrenyl, and chrysenyl groups.

[0202] Said C6-C 60 Specific examples of non-condensed arylene groups include phenylene groups. 60 Condensed polycyclic arylene groups include naphthylene groups, anthracenylene groups, phenantrenylene groups, pyrenylene groups, chrysenylene groups, and others.

[0203] Said C6-C 60 Aryl group and C6-C 60 If the arylene group contains two or more rings, these two or more rings are fused to each other.

[0204] In this specification, C1-C 60 A heteroaryl group contains at least one heteroatom selected from the group consisting of N, O, P, and S as a ring-forming atom, C1-C 60 This refers to a monovalent group having a carbon-cyclic aromatic system, C1-C 60 The heteroarylene group contains at least one heteroatom selected from the group consisting of N, O, P, and S as a ring-forming atom, C1-C 60 This refers to a divalent group having a carbocyclic aromatic system.

[0205] Said C1-C 60 A non-condensed heteroarylene group contains at least one heteroatom selected from the group consisting of N, O, P, and S as a ring-forming atom, and does not have two or more rings (C1-C1). 60 This refers to a divalent group having a carbocyclic aromatic system. 60 A condensed polycyclic heteroarylene group contains at least one heteroatom selected from the group consisting of N, O, P, and S as a ring-forming atom, and has two or more rings in a C1-C structure. 60 This refers to a divalent group having a carbocyclic aromatic system.

[0206] Said C1-C 60Specific examples of heteroaryl groups include pyridinyl, pyrimidinyl, pyrazinyl, pyridadinyl, triazinyl, quinolinyl, and isoquinolinyl groups.

[0207] Said C1-C 60 Specific examples of non-condensed heteroarylene groups include pyridinylene groups, pyrimidinylene groups, pyradinylene groups, pyridadinylene groups, triadinylene groups, etc. 60 Specific examples of condensed polycyclic heteroarylene groups include quinolinylene groups, isoquinolinylene groups, quinoxalinylene groups, and phthalazine groups. 60 When a heteroaryl group and a C1-C60 heteroarylene group contain two or more rings, the two or more rings are fused to each other.

[0208] In this specification, C6-C 60 The aryloxy group is -OA 102 (Here, A 102 is the above C6-C 60 (It is an aryl group) and the C6-C 60 The arylthio group is -SA 103 (Here, A 103 is the above C6-C 60 It indicates that it is an aryl group.

[0209] In this specification, a monovalent non-aromatic condensed polycyclic group is a monovalent group (e.g., C8-C) in which two or more rings are fused to each other, contains only carbon as the ring-forming atom, and the entire molecule is non-aromatic. 60 This means ).Specific examples of the monovalent non-aromatic condensed polycyclic group include the fluorenyl group. In this specification, a divalent non-aromatic condensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

[0210] In this specification, a monovalent non-aromatic condensed heteropolycyclic group is a monovalent group (e.g., C2-C2) in which two or more rings are condensed together, and in addition to carbon, the ring-forming atoms include heteroatoms selected from the group consisting of N, O, P, and S, and the entire molecule is non-aromatic. 60 ) means the monovalent non-aromatic heterocondensed polycyclic group includes a carbazolyl group, etc. In this specification, a divalent non-aromatic heterocondensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic heterocondensed polycyclic group.

[0211] In this specification, substituted C3-C 10 Cycloalkylene group, substituted C1-C 10 Heterocycloalkylene group, substituted C3-C 10 Cycloalkenylene group, substituted C1-C 10 Heterocycloalkenylene group, substituted C6-C 60 Arylene group, substituted C6-C 60 Non-condensed arylene group, substituted C6-C 60 Condensed polycyclic arylene group, substituted C1-C 60 Heteroarylene group, substituted C1-C 60 Non-condensed heteroarylene group, substituted C1-C 60 Condensed polycyclic heteroarylene group, substituted divalent non-aromatic condensed polycyclic group, substituted divalent non-aromatic heterocondensed polycyclic group, substituted C1-C 60 Alkyl alkyl group, substituted C2-C 60 Alkenyl group, substituted C2-C 60 Alkynyl group, substituted C1-C 60 Alkoxy group, substituted C3-C 10 Cycloalkyl groups, substituted C1-C 10 Heterocycloalkyl groups, substituted C3-C 10 Cycloalkenyl group, substituted C1-C 10 Heterocycloalkenyl group, substituted C6-C 60 Aryl group, substituted C6-C 60Aryloxy group, substituted C6-C 60 Arylthio group, substituted C1-C 60 At least one of the heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituent of the substituted monovalent non-aromatic heterocondensed polycyclic group is Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl groups and C1-C60 alkoxy groups; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, and Si(Q 13 )(Q 14 )(Q 15 C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group and C1-C 60 Alkoxy group; C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, biphenyl groups, and terphenyl groups; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, biphenyl groups, terphenyl groups, and Si(Q 23 )(Q 24 )(Q 25 C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups; and -4(Q 33 )(Q 34 )(Q 35 Selected from the group consisting of ); The aforementioned Q13 ~Q 15 Q 23 ~Q 25 , and Q 33 ~Q 35 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C1-C 60 The group is selected from the group consisting of heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, biphenyl groups, and terphenyl groups.

[0212] For example, the substituted C3-C 10 Cycloalkylene group, substituted C1-C 10 Heterocycloalkylene group, substituted C3-C 10 Cycloalkenylene group, substituted C1-C 10 Heterocycloalkenylene group, substituted C6-C 60 Arylene group, substituted C6-C 60 Non-condensed arylene group, substituted C6-C 60 Condensed polycyclic arylene group, substituted C1-C 60 Heteroarylene group, substituted C1-C 60 Non-condensed heteroarylene group, substituted C1-C 60 Condensed polycyclic heteroarylene group, substituted divalent non-aromatic condensed polycyclic group, substituted divalent non-aromatic heterocondensed polycyclic group, substituted C1-C 60 Alkyl alkyl group, substituted C2-C 60 Alkenyl group, substituted C2-C60 Alkynyl group, substituted C1-C 60 Alkoxy group, substituted C3-C 10 Cycloalkyl groups, substituted C1-C 10 Heterocycloalkyl groups, substituted C3-C 10 Cycloalkenyl group, substituted C1-C 10 Heterocycloalkenyl group, substituted C6-C 60 Aryl group, substituted C6-C 60 Aryloxy group, substituted C6-C 60 Arylthio group, substituted C1-C 60 At least one of the heteroaryl group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituent of the substituted monovalent non-aromatic heterocondensed polycyclic group is Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, and C1-C 60 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, pentarenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, i Ndasenyl group, acenaphthyl group, fluorenyl group, spirofluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, naphthacenyl group, picenyl group, perilenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, pyrrolyl group, thiophenyl group, furanyl group , imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthylidinyl group, quinoxalinyl group, quinazolyl group, synnolinyl group, carbazolyl group, phenantridinyl group, acridinyl group, Phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, imidazopyridinyl group, imidazopyridinyl group, and Si(Q 13 )(Q 14 )(Q 15 C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group and C1-C 60 Alkoxy group; Cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, pentarenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spirofluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenantrenyl Lu group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, naphthacenyl group, picenyl group, perilenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group Group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthilidinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthridinel group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, imidazopyridinyl group and imidazopyridinyl group; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, pentarenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spirofluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phena Anthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, naphthacenyl group, picenyl group, perilenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl Si(Q) 23 )(Q 24 )(Q 25 ) A group substituted with at least one selected from the group consisting of: cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, pentarenyl group, indenyl group, naphthyl group, azulenyl group, heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spirofluorenyl group, benzofluorenyl group, dibenzofluorenyl group Nyl group, phenalenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, naphthacenyl group, picenyl group, perilenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, ox Zolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthilidinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthridine group, acridinyl group, phenanthrolinyl group, phenadinyl The group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzooxazolyl group, isobenzooxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, imidazopyridinyl group and imidazopyridinyl group; and -4(Q 33 )(Q 34 )(Q 35 Selected from the group consisting of ); The aforementioned Q 13 ~Q 15 Q 23 ~Q 25 , and Q 33 ~Q 35These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, pentarenyl group, indenyl group, naphthyl group, azlenyl group, heptarenyl group, indacenyl group, acenaphthyl group, fluorenyl group, spirofluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenalenyl group, phenant Renyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, naphthacenyl group, picenyl group, perilenyl group, pentaphenyl group, hexacenyl group, pentacenyl group, rubicenyl group, coronenyl group, ovalenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyr Selected from the group consisting of lysinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphthilidinyl group, quinoxalinyl group, quinazolinyl group, sinnolinyl group, carbazolyl group, phenanthidinyl group, acridinyl group, phenanthrolinyl group, phenazinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, thiadiazolyl group, imidazopyridinyl group, and imidazopyridinyl group.

[0213] In this specification, "Ph" means a phenyl group, "Me" means a methyl group, "Et" means an ethyl group, and "ter-Bu" or "But" means a tert-butyl group.

[0214] In this specification, "biphenyl group" means a monovalent group in which two benzene rings are linked to each other by a single bond, and "terphenyl group" means a monovalent group in which three benzene rings are linked to each other by a single bond. [Examples]

[0215] The following provides a more detailed explanation of an organic light-emitting element according to one embodiment of the present invention, citing synthesis examples and embodiments. In the synthesis examples below, the expression "B was used instead of A" refers to the fact that the molar equivalents of A and B are the same.

[0216] <Example of synthesis> [Synthesis Example 1: Synthesis of Compounds 1-3]

[0217] [ka]

[0218] (Synthesis of intermediates 1-3) Intermediate 1-1 (0.04 mol), intermediate 1-2 (0.04 mol), tetrakis(triphenylphosphine)palladium (2 mmol), 20 mL of 2 M K2CO3 aqueous solution, 20 mL of ethanol, and 50 mL of toluene were mixed and stirred for 4 hours while heating at 120°C. After the reaction was complete, the mixture was extracted with ethyl acetate and distilled water, and the organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain intermediate 1-3.

[0219] (Synthesis of intermediates 1-4) 0.03 mol of intermediate 1-3 was added, and 100 mL of tetrahydrofuran (THF) was added and cooled to -78°C. 0.07 mol of 2.5 M n-butyllithium was added, and after 1 hour, 0.07 mol of isopropyl borate was added and the mixture was stirred under reflux for 17 hours. After the reaction was complete, the mixture was extracted with ethyl acetate and distilled water, and the organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure to obtain intermediate 1-4.

[0220] (Synthesis of compounds 1-3) Intermediate 1-4 (0.02 mol), 4-bromo-dibenzo[b,d]furan (0.03 mol), Pd(PPh3) (41 mmol), K2CO3 (0.04 mol), toluene (100 mL), ethanol (25 mL), and H2O (25 mL) were added and stirred under reflux for 13 hours. After the reaction was complete, the mixture was extracted with dichloromethane and distilled water. The organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain compound 1-3: T1(compounds 1-3)=2.2eV.

[0221] [Synthesis Example 2: Synthesis of Compound 2-8]

[0222] [ka]

[0223] (Synthesis of Compounds 2-8) Intermediate 2-1 (0.02 mol), intermediate 2-2 (0.02 mol), sodium t-butoxide (0.06 mol), and tri-tert-butylphosphine (1 mmol) were dissolved in 100 ml of toluene. Pd(dba) (21 mmol) was added, and the mixture was stirred under reflux under a nitrogen atmosphere for 12 hours. After the reaction was complete, the mixture was extracted with toluene and distilled water. The organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography with n-hexane / dichloromethane (2:1 volume ratio) to obtain compound 2-8. T1(compound 2-8) = 2.6 eV.

[0224] [Synthesis Example 3: Synthesis of Compound 3-1]

[0225] [ka]

[0226] (Synthesis of Compound 3-1) 0.05 mol of intermediate 3-1, 0.02 mol of intermediate 3-2, 0.8 mol of sodium t-butoxide, and 1 mmol of tri-tert-butylphosphine were dissolved in 100 ml of toluene. 22 mmol of Pd(dba) was added, and the mixture was stirred under reflux under a nitrogen atmosphere for 12 hours. After the reaction was complete, the mixture was extracted with toluene and distilled water. The organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain the target compound 3-1. T1(compound 3-1) = 2.0 eV.

[0227] [Synthesis Example 4: Synthesis of Compounds 4-5]

[0228] [ka]

[0229] (Synthesis of intermediate 4-1) 0.02 mol of 1-bromo-2-nitrobenzene, 0.022 mol of dibenzo[b,d]furan-3-ylboronic acid, 1 mmol of tetrakis(triphenylphosphine)palladium, 30 mL of 2M K2CO3 aqueous solution, 30 mL of ethanol, and 60 mL of toluene were mixed and stirred for 4 hours while heating at 120°C. After the reaction was complete, the mixture was extracted with ethyl acetate and distilled water, and the organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain intermediate 4-1.

[0230] (Synthesis of intermediate 4-2) Intermediate 4-1 (0.02 mol) was mixed with 60 mL of triethyl phosphite and 30 mL of 1,2-dichlorobenzene, and then heated to 150°C and stirred for 12 hours. After the reaction was complete, unreacted triethyl phosphite and 1,2-dichlorobenzene were removed using a distillation apparatus. After the reaction was complete, the mixture was extracted with ethyl acetate and distilled water, and the organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain intermediate 4-2.

[0231] (Synthesis of Compounds 4-5) 4 mmol of NaH was dissolved in dimethylformamide and stirred. 3 mmol of intermediate 4-2 was dissolved in dimethylformamide and added to the stirred NaH solution, and stirred for 1 hour. 3.5 mmol of 2-(3-bromophenyl)-4,6-diphenyl-1,3,5-triazine was dissolved in DMF and stirred, and the reaction mixture, stirred for 1 hour, was added and stirred at room temperature for 24 hours. After the reaction was complete, the resulting solid was removed, washed with ethyl acetate, and purified by column chromatography to obtain the target compound 4-5. T1(compound 4-5)=2.5eV.

[0232] [Synthesis Example 5: Synthesis of Compound 5-3]

[0233] [ka]

[0234] (Synthesis of intermediate 5-1) In a 250 mL round-bottom flask, 0.04 mol of dibenzofuran-4-ylboronic acid, 0.05 mol of 1-bromo-3-iodobenzene, 42 mmol of Pd(PPh3), 0.08 mol of K2CO3, 100 mL of toluene, 25 mL of EtOH, and 25 mL of H2O were added and the mixture was stirred under reflux for 4 hours. After the reaction was complete, the mixture was extracted with dichloromethane and distilled water, and the organic layer was dried over anhydrous magnesium sulfate. The mixture was filtered, and the filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain intermediate 5-1.

[0235] (Synthesis of intermediate 5-2) 0.03 mol of intermediate 5-1 was placed in a 500 mL round-bottom flask, and 100 mL of THF was added and cooled to -78°C. 0.05 mol of 2.5 M n-butyllithium was added, and after 1 hour, 0.05 mol of isopropyl borate was added and the mixture was stirred under reflux for 17 hours. After the reaction was complete, the mixture was extracted with ethyl acetate and distilled water, and the organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure to obtain intermediate 5-2.

[0236] (Synthesis of intermediate 5-3) In a 1 L round-bottom flask, 0.02 mol of intermediate 5-2, 0.03 mol of 1-phenyl-3,5-dichloropyrimidine, 41 mmol of Pd(PPh3), 0.04 mol of K2CO3, and 100 mL of toluene, 25 mL of EtOH, and 25 mL of H2O were added and stirred under reflux for 13 hours. After the reaction was complete, the mixture was extracted with dichloromethane and distilled water, and the organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain intermediate 5-3.

[0237] (Synthesis of compound 5-3) Intermediate 5-3 (0.01 mol), (3-(9-carbazole-9-yl)phenyl)boronic acid (0.012 mol), NaH (0.015 mol), and dimethylformamide (150 mL) were added, and the mixture was stirred at room temperature for 5 hours. After the reaction was complete, the mixture was extracted with ethyl acetate and distilled water. The organic layer was dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure. The product was purified by column chromatography to obtain compound 5-3. T1(compound 5-3) = 2.6 eV.

[0238] [Example 1-1] 15Ω / cm 2 ITO glass substrate (manufactured by Corning) with a (1,200 Å) thick ITO layer is cut to a size of 50 mm x 50 mm x 0.5 mm, and ITO After ultrasonic cleaning using propyl alcohol and pure water for 15 minutes each, the ITO glass substrate (anode) was irradiated with ultraviolet light for 30 minutes and then cleaned by exposure to ozone before being placed in a vacuum deposition apparatus.

[0239] Compounds 1-9 were vacuum-deposited to a thickness of 1,200 Å onto the ITO anode substrate to form a hole transport layer. Next, compounds 4-5 (host) and PD17 (dopant) were co-deposited on top of the hole transport layer in a weight ratio of 95:5 to form a 300 Å thick light-emitting layer.

[0240] Next, compound 5-3 was deposited on the upper part of the light-emitting layer to form a 100 Å thick first electron transport layer. Then, BAlq(Bis(2-methyl-8-quinolinolato-N1,O8)-(1,1'-Biphenyl-4-olato)aluminum) was vacuum deposited on the upper part of the first electron transport layer to form a 300 Å thick second electron transport layer. LiF was deposited on the upper part of the second electron transport layer to form a 10 Å thick electron injection layer.

[0241] Subsequently, an organic light-emitting element was fabricated by depositing Al onto the electron injection layer to form a 2,000 Å cathode.

[0242] [Examples 1-2 to 1-5] An organic light-emitting element was fabricated using the same method as in Example 1-1, except that the materials listed in Table 1 below were used.

[0243] [Comparative Example 1-1] An organic light-emitting device was fabricated using the same method as in Example 1-1, except that CBP (4,4'-N,N'-dicarbazol-biphenyl) was used instead of compound 4-5 during the formation of the light-emitting layer.

[0244] [Comparative Example 1-2] An organic light-emitting element was fabricated using the same method as in Example 1-1, except that a first electron transport layer was not formed, and a 400 Å thick electron transport layer was formed by vacuum deposition of BAlq on the upper part of the light-emitting layer.

[0245] [Example 2-1] 15Ω / cm 2 An ITO glass substrate (manufactured by Corning) with a (1,200 Å) thick ITO layer was cut to a size of 50 mm x 50 mm x 0.5 mm. It was ultrasonically cleaned for 15 minutes each using isopropyl alcohol and pure water, then irradiated with ultraviolet light for 30 minutes, exposing it to ozone for further cleaning, and the ITO glass substrate (anode) was placed in a vacuum deposition apparatus.

[0246] Compounds 1-9 were vacuum-deposited to a thickness of 1,100 Å onto the ITO anode substrate to form a first hole transport layer. Next, compound 2-8 was vacuum-deposited to a thickness of 100 Å onto the first hole transport layer to form a second hole transport layer. Compounds 4-5 (host) and PD17 (dopant) were co-deposited on the second hole transport layer in a weight ratio of 95:5 to form a 300 Å thick light-emitting layer.

[0247] Subsequently, BAlq was vacuum deposited on the upper part of the light-emitting layer to form a 400 Å thick electron transport layer. LiF was deposited on the upper part of the electron transport layer to form a 10 Å thick electron injection layer, and Al was deposited on the upper part of the electron injection layer to form a 2,000 Å cathode, thereby fabricating an organic light-emitting device.

[0248] [Examples 2-2 to 2-5] An organic light-emitting element was fabricated using the same method as in Example 2-1, except that the materials listed in Table 2 below were used.

[0249] [Comparative Example 2-1] An organic light-emitting device was fabricated using the same method as in Example 2-1, except that CBP was used instead of compound 4-5 during the formation of the light-emitting layer.

[0250] [Comparative Example 2-2] An organic light-emitting element was fabricated using the same method as in Example 2-1, except that compound HT3 was used instead of compound 2-8 during the formation of the second hole transport layer.

[0251] [Comparative Example 2-3] An organic light-emitting element was fabricated using the same method as in Example 2-1, except that N,N'-di-1-naphthyl-N,N'-diphenylbenzidine (NPD) was used instead of compound 1-9 when forming the first hole transport layer, and compound 2-4 was used instead of compound 2-8 when forming the second hole transport layer.

[0252] [Example 3-1] 15Ω / cm 2 An ITO glass substrate (manufactured by Corning) with a (1,200 Å) thick ITO layer was cut to a size of 50 mm x 50 mm x 0.5 mm. It was ultrasonically cleaned for 15 minutes each using isopropyl alcohol and pure water, then irradiated with ultraviolet light for 30 minutes, exposing it to ozone for further cleaning, and the ITO glass substrate (anode) was placed in a vacuum deposition apparatus.

[0253] Compounds 1-9 were vacuum-deposited to a thickness of 1,200 Å onto the ITO anode substrate to form a hole transport layer. Next, compounds 9,10-di(2-naphthyl)anthracene (ADN) (host) and compound 3-1 (dopant) were co-deposited on the hole transport layer in a weight ratio of 95:5 to form a 300 Å thick light-emitting layer.

[0254] Next, compound 5-3 was deposited on the upper part of the light-emitting layer to form a 100 Å thick first electron transport layer. Then, Alq3 was vacuum deposited on the upper part of the first electron transport layer to form a 300 Å thick second electron transport layer. LiF was deposited on the upper part of the second electron transport layer to form a 10 Å thick electron injection layer.

[0255] Subsequently, an organic light-emitting element was fabricated by depositing Al onto the electron injection layer to form a 2,000 Å cathode.

[0256] [Examples 3-2 to 3-5] An organic light-emitting element was fabricated using the same method as in Example 3-1, except that the materials listed in Table 3 below were used.

[0257] [Comparative Example 3-1] An organic light-emitting device was fabricated using the same method as in Example 3-1, except that FD1 was used instead of compound 3-1 during the formation of the light-emitting layer.

[0258] [Comparative Example 3-2] An organic light-emitting element was fabricated using the same method as in Example 3-1, except that a first electron transport layer was not formed, and Alq3 was vacuum-deposited onto the upper part of the light-emitting layer to form a 400 Å thick electron transport layer.

[0259] [Example 4-1] 15Ω / cm 2 An ITO glass substrate (manufactured by Corning) with a (1,200 Å) thick ITO layer was cut to a size of 50 mm × 50 mm × 0.5 mm. It was ultrasonically cleaned for 15 minutes each using isopropyl alcohol and pure water, then irradiated with ultraviolet light for 30 minutes, exposed to ozone for further cleaning, and the ITO glass substrate (anode) was placed in a vacuum deposition apparatus.

[0260] Compounds 1-9 were vacuum-deposited to a thickness of 1,100 Å onto the ITO anode substrate to form a first hole transport layer. Next, compound 2-8 was vacuum-deposited to a thickness of 100 Å onto the first hole transport layer to form a second hole transport layer. On top of the second hole transport layer, ADN and compound 3-1 (dopant) were co-deposited in a weight ratio of 95:5 to form a 300 Å thick light-emitting layer.

[0261] Subsequently, Alq3 was vacuum deposited on the upper part of the light-emitting layer to form a 400 Å thick electron transport layer. LiF was deposited on the upper part of the electron transport layer to form a 10 Å thick electron injection layer, and Al was deposited on the upper part of the electron injection layer to form a 2,000 Å cathode, thereby fabricating an organic light-emitting device.

[0262] [Examples 4-2 to 4-5] An organic light-emitting element was fabricated using the same method as in Example 4-1, except that the materials listed in Table 4 below were used.

[0263] [Comparative Example 4-1] An organic light-emitting device was fabricated using the same method as in Example 4-1, except that FD1 was used instead of compound 3-1 during the formation of the light-emitting layer.

[0264] [Comparative Example 4-2] An organic light-emitting element was fabricated using the same method as in Example 4-1, except that compound HT3 was used instead of compound 2-8 during the formation of the second hole transport layer.

[0265] <Example of evaluation 1> The efficiency and T90 lifetime of the organic light-emitting elements fabricated in Examples 1-1 to 1-5, 2-1 to 2-5, 3-1 to 3-5, 4-1 to 4-5, and Comparative Examples 1-1, 1-2, 2-1 to 2-3, 3-1, 3-2, 4-1, and 4-2 were measured using a PR650 luminance meter, and the results are shown in Tables 1 to 4. The T90 lifetime is the time it takes for the luminance to decrease to 90% when the initial luminance, measured under a luminance of 150 nits, is increased to 100%.

[0266] [Table 1]

[0267] [Table 2]

[0268] [Table 3]

[0269] [Table 4]

[0270] [ka]

[0271] From Tables 1 to 4 above, it can be confirmed that the efficiency and lifetime of the organic light-emitting devices manufactured in Examples 1-1 to 1-5, 2-1 to 2-5, 3-1 to 3-5, and 4-1 to 4-5 are superior to those of the organic light-emitting devices manufactured in Comparative Examples 1-1, 1-2, 2-1 to 2-3, 3-1, 3-2, 4-1, and 4-2, respectively. [Industrial applicability]

[0272] The organic light-emitting device of the present invention can be effectively applied, for example, to light-emitting related technical fields. [Explanation of symbols]

[0273] 10 Organic light-emitting devices 110 1st electrode 130 1st layer 150 2nd layer 170 3rd layer 190 2nd electrode

Claims

1. First electrode and, A second electrode facing the first electrode, A first layer containing a first compound is interposed between the first electrode and the second electrode, A second layer containing a second compound is interposed between the first layer and the second electrode, A third layer containing a third compound is interposed between the second layer and the second electrode, and includes The second or third layer is a light-emitting layer, If the second layer is the light-emitting layer, the second layer further comprises a dopant or a host, and if the second layer comprises a dopant, the content of the dopant is 0.01 to 15 parts by weight per 100 parts by weight of the second compound, and if the second layer comprises a host, the content of the second compound is 0.01 to 15 parts by weight per 100 parts by weight of the host. If the third layer is the light-emitting layer, the third layer further comprises a dopant or a host, and if the third layer comprises a dopant, the content of the dopant is 0.01 to 15 parts by weight per 100 parts by weight of the third compound, and if the third layer comprises a host, the content of the third compound is 0.01 to 15 parts by weight per 100 parts by weight of the host. The first compound does not contain a nitrogen-containing heterocyclic group having *=N-*' as a ring-forming substructure. The first compound is a compound represented by any of the following chemical formulas 1-1(1) to 1-1(4), The second compound is a compound represented by any of the following chemical formulas: 1-2(1), 1-3(1), 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 3-1(1), and 3-1(2). The third compound is a compound represented by any of the following chemical formulas: 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2). 【Chemistry 1】 【Chemistry 2】 【Transformation 3】 【Chemistry 4】 【Transformation 5】 In the aforementioned chemical formulas 1-1(1) to 1-1(4), 1-2(1), 1-3(1), 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), 2D-2(2), 3-1(1), and 3-1(2), L 21 to L ３ and L ３１ to L ３４ and L ４１ to L ４３ are each independently a substituted or unsubstituted C ３ -C １０ cycloalkylene group, a substituted or unsubstituted C １ -C １０ heterocycloalkylene group, a substituted or unsubstituted C ３ -C １０ cycloalkenylene group, a substituted or unsubstituted C １ -C １０ heterocycloalkenylene group, a substituted or unsubstituted C ６ -C ６０ arylene group, a substituted or unsubstituted C １ -C ６０ heteroarylene group, a substituted or unsubstituted divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group, and are selected from b1 to b5, d1 to d5, and g1 to g3 are each independent integers between 0 and 3. Ar ２１ ~Ar ２４ Ar ３１ ~Ar ３４ , and Ar ４１ ~Ar ４３ Each of these is independently a group represented by the following chemical formulas A to C, a substituted or unsubstituted C. ３ -C １０ Cycloalkyl groups, substituted or unsubstituted C １ -C １０ Heterocycloalkyl groups, substituted or unsubstituted C ３ -C １０ Cycloalkenyl group, substituted or unsubstituted C １ -C １０ Heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ Aryl group, biphenylyl group, terphenylyl group, substituted or unsubstituted C １ -C ６０ Selected from the group consisting of heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic groups, R ２１ ~R ２４ , R ３１ , and R ４１ ~R ４４ Each of these independently consists of hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, and substituted or unsubstituted C. １ -C ６０ Alkyl, substituted or unsubstituted C ２ -C ６０ Alkenyl group, substituted or unsubstituted C ２ -C ６０ Alkynyl group, substituted or unsubstituted C １ -C ６０ alkoxy group, substituted or unsubstituted C ３ -C １０ Cycloalkyl groups, substituted or unsubstituted C １ -C １０ Heterocycloalkyl groups, substituted or unsubstituted C ３ -C １０ Cycloalkenyl group, substituted or unsubstituted C １ -C １０ Heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ Aryl group, substituted or unsubstituted carbon ６ -C ６０ Aryloxy group, substituted or unsubstituted C ６ -C ６０ Arylthio group, substituted or unsubstituted C １ -C ６０ Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic groups, biphenylyl groups, terphenylyl groups, and -Si(Q ４３ ) (Q ４４ ) (Q ４５ ) are selected from, c1, c4, h1, and h4 are each independent integers between 0 and 4, e1 is an integer between 0 and 4, and c2, c3, h2, and h3 are each independent integers between 0 and 3. Z1 to Z5 are independent of each other. Deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C60 alkyl group, C2-C60 alkenyl group, C2-C60 alkynyl group, and C1-C60 alkoxy group; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, C3-C10 cycloalkyl group, C1-C10 heterocycloalkyl group, C3-C10 cycloalkenyl group, C1-C10 heterocycloalkenyl group, C6-C60 aryl group, C6-C60 aryloxy group, C6-C60 arylthio group, C1-C60 heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group and C1-C60 alkyl group substituted with at least one selected from -Si(Q13)(Q14)(Q15), C 2-C60 alkenyl groups, C2-C60 alkynyl groups, and C1-C60 alkoxy groups; C3-C10 cycloalkyl groups, C1-C10 heterocycloalkyl groups, C3-C10 cycloalkenyl groups, C1-C10 heterocycloalkenyl groups, C6-C60 aryl groups, C6-C60 aryloxy groups, C6-C60 arylthio groups, C1-C60 heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, C3-C10 cycloalkyl group, C1-C10 heterocycloalkyl group, C3-C10 cycloalkenyl group, C1-C10 heterocycloalkenyl group, C6-C60 aryl group, C6-C60 aryloxy group, C6-C60 arylthio group, C1-C60 heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group and C3-C10 cycloalkyl group substituted with at least one selected from -Si(Q23)(Q24)(Q25), C 1-C10 heterocycloalkyl groups, C3-C10 cycloalkenyl groups, C1-C10 heterocycloalkenyl groups, C6-C60 aryl groups, C6-C60 aryloxy groups, C6-C60 arylthio groups, C1-C60 heteroaryl groups, monovalent non-aromatic condensed polycyclic groups and monovalent non-aromatic heterocondensed polycyclic groups; and - A group selected from the group consisting of Si(Q33)(Q34)(Q35); The aforementioned Q13 to Q15, Q23 to Q25, and Q33 to Q35 are, independently of each other, hydrogen atoms, deuterium atoms, -F, -Cl, -Br, -I, hydroxyl groups, cyano groups, nitro groups, amino groups, amidino groups, hydrazine groups, hydrazone groups, carboxylic acid groups or their salts, sulfonic acid groups or their salts, phosphate groups or their salts, C1-C60 alkyl groups, C2-C60 alkenyl groups, C2-C60 alkynyl groups, C1-C60 alkoxy groups, C3-C10 cycloalkyl groups, C1-C10 heterocycloalkyl groups, C3-C10 cycloalkenyl groups, C1-C10 heterocycloalkenyl groups, C6-C60 aryl groups, C1-C60 A group selected from the group consisting of heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups. f1 is an integer between 0 and 4, f2 is an integer between 0 and 3, f3 is an integer between 0 and 5, and f4 is an integer between 0 and 2. In the aforementioned chemical formula 1-1(1), at least one of Ar22 and Ar23 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 1-1(2), at least one of Ar22 and Ar23 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 1-1(3), at least one of Ar21 to Ar23 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 1-1(4), at least one of Ar21 to Ar23 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 1-2(1), at least one of Ar21 to Ar24 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 1-3(1), at least one of Ar21 and Ar22 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formulas 2H-1(1) to 2H-1(4), Ar31 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 2D-1(1), at least one of Ar31 to Ar34 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 2D-1(2), at least one of Ar31 to Ar34 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 2D-1(3), at least one of Ar31 to Ar34 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 2D-1(4), at least one of Ar31 to Ar34 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 2D-2(1), at least one of Ar32 and Ar33 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 2D-2(2), at least one of Ar32 and Ar33 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 3-1(1), at least one of Ar41 to Ar43 is a group of any of the following chemical formulas A to C. In the aforementioned chemical formula 3-1(2), at least one of Ar41 to Ar43 is a group of any of the following chemical formulas A to C. Replaced C ３ -C １０ Cycloalkylene group, replaced C １ -C １０ Heterocycloalkylene group, replaced C ３ -C １０ Cycloalkenylene group, replaced C １ -C １０ Heterocycloalkenylene group, replaced C ６ -C ６０ Arylene group, replaced C ６ -C ６０ Non-condensed arylene group, replaced C ６ -C ６０ Condensed polycyclic arylene group, replaced C １ -C ６０ Heteroarylene group, replaced C １ -C ６０ Non-condensed heteroarylene group, replaced C １ -C ６０ Condensed polycyclic heteroarylene group, replaced divalent non-aromatic condensed polycyclic group, replaced divalent non-aromatic condensed hetero polycyclic group, replaced C １ -C ６０ Alkyl group, replaced C​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The substituents of heteroaryl groups, substituted monovalent non-aromatic condensed polycyclic groups, and substituted monovalent non-aromatic condensed heteropolycyclic groups are Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, and C １ -C ６０ Alkoxy group; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic condensed heteropolycyclic groups, and -Si(Q １３ ) (Q １４ ) (Q １５ Substituted with at least one selected from the group consisting of ), C １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, and C １ -C ６０ Alkoxy group; C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, biphenylyl groups, and terphenylyl groups; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, biphenylyl groups, terphenylyl groups, and Si(Q ２３ ) (Q ２４ ) (Q ２５ Substituted with at least one selected from the group consisting of ), C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups; and -Si(Q) ３３ ) (Q ３４ ) (Q ３５ Selected from the group consisting of ); The aforementioned Q １３ ~Q １５ Q ２３ ~Q ２５ Q ３３ ~Q ３５ , and Q ４３ ~Q ４５ These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C １ -C ６０ Selected from the group consisting of heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, monovalent non-aromatic heterocondensed polycyclic groups, biphenylyl groups, and terphenylyl groups, The first compound, the second compound, and the third compound each independently contain at least one group represented by the following chemical formula C, forming an organic light-emitting element: 【Transformation 6】 In the aforementioned chemical formulas A to C, Ring A １ , ring A １１ and ring A １２ They are independent of each other, C ５ -C ３０ Carbocyclic and / or C ２ -C ３０ It is a heterocyclic ring, R １ , R ２ , R １１ and R １２ They are independent of each other, Hydrogen atom, deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C １ -C ６０ Alkyl, substituted or unsubstituted C ２ -C ６０ Alkenyl group, substituted or unsubstituted C ２ -C ６０ Alkynyl group, and substituted or unsubstituted C １ -C ６０ Alkoxy group; C substituted with at least one selected from a deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, and C １ -C ６０ Alkoxy group; C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ A C molecule substituted with at least one selected from a heteroaryl group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic heterocondensed polycyclic group. ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups; and -N(Q) １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ) and -B(Q ６ ) (Q ７ Selected from the group consisting of ); The aforementioned Q １ ~Q ７ These are, independently of each other, a hydrogen atom, a deuterium atom, -F, -Cl, -Br, -I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or its salt, a sulfonic acid group or its salt, a phosphate group or its salt, and C １ -C ６０ Alkyl alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C １ -C ６０ Selected from the group consisting of heteroaryl groups, monovalent non-aromatic condensed polycyclic groups, and monovalent non-aromatic heterocondensed polycyclic groups, a1, a11, and a12 are independent integers between 0 and 10. a2 is an integer between 0 and 2. * and *' are bonding sites with adjacent atoms.

2. The organic light-emitting element according to claim 1, wherein at least two of the first to third compounds have a minimum triplet energy of 2.4 eV or more.

3. The organic light-emitting element according to claim 1 or 2, wherein the first compound, the second compound, and the third compound have a non-linearly symmetric structure.

4. Ring A １ , ring A １１ and ring A １２ The following is a description of any one of claims 1 to 3, in which the following is independently selected from the group consisting of benzene, naphthalene, fluorene, benzofluorene, pyridine, pyrimidine, carbazole, benzocarbazole, and dibenzothiophene. Organic light-emitting diode.

5. In the above chemical formulas A to C, R １ , R ２ , R １１ and R １２ They are independent of each other, Hydrogen atom, deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C １ -C ２０ Alkyl alkyl groups, and substituted or unsubstituted C １ -C ２０ Alkoxy group; C substituted with at least one selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt １ -C ２０ Alkyl alkyl groups, and C １ -C ２０ Alkoxy group; Phenyl group, biphenylyl group, terphenylyl group, fluorenyl group, naphthyl group, pyridinyl group, pyrimidinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, quinazolinyl group and quinoxalinyl group; Deuterium atom, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C １０ Alkyl alkyl group, C １ -C １０ Alkoxy groups and C ６ -C １６ Phenyl groups, biphenylyl groups, terphenylyl groups, fluorenyl groups, naphthyl groups, pyridinyl groups, pyrimidinyl groups, triazinyl groups, quinolinyl groups, isoquinolinyl groups, quinazolinyl groups and quinoxalinyl groups, each substituted with at least one selected from aryl groups; and -N(Q) １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ) and B (Q ６ ) (Q ７ ); Selected from the group consisting of, The aforementioned Q １ ~Q ７ They are independent of each other, C １ -C １０ Alkyl alkyl group, C １ -C １０ An organic light-emitting element according to any one of claims 1 to 4, selected from the group consisting of an alkoxy group, a phenyl group, a biphenylyl group, a terphenylyl group, a fluorenyl group, and a naphthyl group.

6. The organic light-emitting element according to any one of claims 1 to 5, wherein the first compound, the second compound, and the third compound each independently contain at least one group represented by any of the following chemical formulas C(1) to C(16). 【Transformation 7】 【Transformation 8】 (Among the above chemical formulas C(1) to C(16), R １ａ ~R １ｄ is the aforementioned R １ It is similar to this, R ２ａ and R ２ｂ is the aforementioned R ２ It is similar to this, R １１ａ ~R １１ｈ is the aforementioned R １１ It is similar to this, R １２ａ ~R １２ｄ is the aforementioned R １２ It is similar to this, * indicates a bonding site with an adjacent atom.

7. The organic light-emitting element according to claim 1, wherein the second compound is a compound represented by any of the chemical formulas 2H-1(1) to 2H-1(4) and 2D-1(1) to 2D-1(4).

8. The organic light-emitting element according to claim 1, wherein the second compound is a compound represented by any of the chemical formulas 2D-1(1) to 2D-1(4).

9. The second layer is a light-emitting layer, and the second layer further includes the host, The organic light-emitting element according to claim 8, wherein the first layer and the third layer are in direct contact with the second layer, respectively.

10. The first compound is selected from the following compounds 1-4 to 1-7 and 1-9 to 1-12. The second compound is selected from the following compounds 3-1 to 3-12 and 4-1 to 4-12. The organic light-emitting element according to any one of claims 1 to 6, wherein the third compound is selected from the following compounds 3-1 to 3-12, 4-1 to 4-12, and 5-1 to 5-9. 【Chemistry 9】 【Chemistry 10】 【Chemistry 11】 【Chemistry 12】

11. The second compound is a compound selected from compounds 3-1 to 3-12 and 4-1 to 4-12. The organic light-emitting element according to claim 10, wherein the third compound is a compound selected from compounds 4-1 to 4-12 and 5-1 to 5-9.

12. The second compound is a compound represented by either chemical formula 1-2(1) or 1-3(1), The organic light-emitting element according to claim 1, wherein the first compound and the second compound are different from each other.

13. The first compound is represented by any of the chemical formulas 1-1(1) to 1-1(4), The second compound is represented by either chemical formula 1-2(1) or 1-3(1), The organic light-emitting element according to claim 12, wherein the third compound is represented by any of the chemical formulas 2H-1(1) to 2H-1(4), 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2).

14. The organic light-emitting element according to claim 12, wherein the third compound is a compound represented by any of the chemical formulas 2H-1(1) to 2H-1(4).

15. The third layer is a light-emitting layer, and the third layer further contains the dopant, The organic light-emitting element according to claim 11, wherein the second layer is in direct contact with the third layer.

16. The organic light-emitting element according to claim 12, wherein the third compound is a compound represented by any of the chemical formulas 2D-1(1) to 2D-1(4), 2D-2(1), and 2D-2(2).

17. The third layer is a light-emitting layer, and the third layer further includes the host, The organic light-emitting element according to claim 16, wherein the second layer is in direct contact with the third layer.

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