Low-voltage, high-efficiency and long-life organic light-emitting element

Abstract

The present invention relates to an organic light-emitting element having high efficiency characteristics, and more specifically, to an organic light-emitting element comprising a compound represented by chemical formula 1 as a light-emitting layer material in the organic light-emitting element, the chemical formula 1 being the same as the content described in the detailed description of the present invention.

Description

Technical Field

[0001] This invention relates to an organic light-emitting element with low voltage, high efficiency, and long lifespan, and more specifically, to a material that uses a compound with a specific structure as the light-emitting layer within the organic light-emitting element, thereby enabling the organic light-emitting element to exhibit low voltage, high efficiency, and long lifespan. Background Technology

[0002] Organic light-emitting diodes (OLEDs) are displays that utilize self-emissive properties. They offer advantages such as a wide viewing angle, thinner and smaller size compared to liquid crystal displays, and faster response times. Therefore, they are expected to be used in full-color displays or lighting applications.

[0003] Organic light emission typically refers to the phenomenon of converting electrical energy into light energy using organic materials. Organic light-emitting devices that utilize organic light emission usually have a structure that includes an anode, a cathode, and an organic layer between them.

[0004] In most cases, to improve the efficiency and stability of organic light-emitting devices (OLEDs), the organic layer is configured as a multilayer structure composed of different materials. For example, it can consist of a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. In this OLED structure, if a voltage is applied between the two electrodes, holes are injected from the anode into the organic layer, and electrons are injected from the cathode. When the injected holes and electrons meet, excitons are formed, and light is emitted when these excitons re-enter the ground state. Such OLEDs are known to possess advantageous characteristics such as self-emission, high brightness, high efficiency, low driving voltage, wide viewing angle, high contrast, and high-speed response.

[0005] Materials used as organic layers in organic light-emitting elements can be classified into light-emitting materials and charge transport materials (e.g., hole injection materials, hole transport materials, electron transport materials, electron injection materials, etc.) according to their functions. Electron blocking layer materials or hole blocking layer materials can be added as needed.

[0006] The biggest challenges for organic light-emitting diodes (OLEDs) are lifespan and efficiency. However, with the increasing size of displays, these efficiency and lifespan issues must be addressed. Here, efficiency, lifespan, and driving voltage are interconnected. If efficiency increases, the driving voltage relatively decreases. As the driving voltage decreases, the crystallization of organic materials caused by Joule heating during driving decreases, ultimately leading to a tendency for increased lifespan.

[0007] However, even simply improving the organic layers cannot maximize efficiency. This is because long lifetime and high efficiency can only be achieved when the energy levels between the organic layers, the T1 value, and the inherent properties of the materials (mobility, interfacial properties, etc.) are optimally combined.

[0008] Typically, in organic light-emitting devices, electrons are transported from the electron transport layer to the light-emitting layer, and holes are transported from the hole transport layer to the light-emitting layer, thereby generating excitons through recombination.

[0009] At this time, the technology of increasing the stability and luminous efficiency of organic light-emitting elements by forming the light-emitting layer into two or more layers has been realized as a product. For example, in the case of forming two light-emitting layers, one of the two light-emitting layers is equivalent to an exciton recombination region, and the other light-emitting layer is equivalent to a triplet-triplet fusion region, thereby having a mechanism for transferring energy from the first light-emitting layer adjacent to the hole transport layer to the second light-emitting layer. In the case of the material used for the light-emitting layer, the more advantageous it is to have a relatively high triplet energy value and a fast electron mobility.

[0010] As prior art concerning organic light-emitting elements comprising two or more light-emitting layers, Korean Patent Publication No. 10-2021-0077686 (June 25, 2021) discloses an organic electroluminescent element in which the light-emitting region comprises a first light-emitting layer and a second light-emitting layer, the first light-emitting layer and the second light-emitting layer being directly adjacent, the first light-emitting layer being located between the anode and the second light-emitting layer, and either the first light-emitting layer or the second light-emitting layer comprising a compound having at least one deuterium atom.

[0011] However, despite the various methods attempted in the prior art, including the aforementioned existing literature, for manufacturing organic light-emitting elements, there remains a persistent demand for the development of organic light-emitting elements that include multiple light-emitting layers and simultaneously possess improved luminous efficiency and long lifetime characteristics.

[0012] [Existing Technical Documents]

[0013] Korean Patent Publication No. 10-2021-0077686 (June 25, 2021) Summary of the Invention

[0014] Therefore, the technical problem to be solved by the present invention is to provide an organic light emitting diode (OLED) with low voltage, high efficiency and long lifespan characteristics. The organic light emitting diode is an organic light emitting diode that includes multiple light-emitting layers, and at least one of the multiple light-emitting layers includes a pyrene compound with a specific structure.

[0015] To address the aforementioned technical problems, the present invention provides an organic light-emitting element, characterized in that it comprises: a first electrode; a second electrode facing the first electrode; a first light-emitting layer sandwiched between the first electrode and the second electrode, and comprising a first host and a first dopant; and a second light-emitting layer comprising a second host and a second dopant, wherein at least one of the first host and the second host comprises one or more compounds represented by the following [Chemical Formula 1].

[0016] [Chemical Formula 1]

[0017]

[0018] In the chemical formula 1,

[0019] A1 is an aromatic heterocycle with 2 to 30 carbon atoms, either substituted or unsubstituted.

[0020] The A2 is selected from any one of the following: an aromatic hydrocarbon ring having 6 to 30 carbon atoms (substituted or unsubstituted), an aromatic heterocycle having 2 to 30 carbon atoms (substituted or unsubstituted), and an aromatic hydrocarbon ring condensed with an aliphatic hydrocarbon ring having 8 to 30 carbon atoms (substituted or unsubstituted).

[0021] The substituents R1 and R2 may be the same or different from each other, and are selected from any one of the following: alkyl groups with 1 to 30 carbon atoms (substituted or unsubstituted), aryl groups with 6 to 50 carbon atoms (substituted or unsubstituted), heteroaryl groups with 2 to 50 carbon atoms (substituted or unsubstituted), and aryl groups with 8 to 30 carbon atoms (substituted or unsubstituted) condensed with an aliphatic hydrocarbon ring.

[0022] The substituents Ar1 and Ar2 may be the same as or different from each other, and are each independently selected from hydrogen, deuterium, tritium, alkyl groups with 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups with 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups with 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups with 2 to 30 substituted or unsubstituted carbon atoms, aryl groups with 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups with 3 to 30 substituted or unsubstituted carbon atoms, etc. Cycloalkenyl groups with 5 to 30 substituted carbon atoms, heterocyclic alkyl groups with 2 to 30 substituted or unsubstituted carbon atoms, heteroalkyl groups with 2 to 50 substituted or unsubstituted carbon atoms, heteroaryl groups with 2 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups condensed with aromatic hydrocarbon rings with 7 to 30 substituted or unsubstituted carbon atoms, cycloalkyl groups condensed with aromatic heterocycles with 5 to 30 substituted or unsubstituted carbon atoms, and cycloalkyl groups condensed with aromatic hydrocarbon rings with 6 to 30 substituted or unsubstituted carbon atoms. Heterocyclic alkyl groups of aromatic hydrocarbon rings; aryl groups condensed with aliphatic hydrocarbon rings, substituted or unsubstituted, having 8 to 30 carbon atoms; heteroaryl groups condensed with aliphatic hydrocarbon rings, substituted or unsubstituted, having 1 to 30 carbon atoms; aryl groups substituted or unsubstituted, having 6 to 30 carbon atoms; cycloalkoxy groups substituted or unsubstituted, having 3 to 30 carbon atoms; heteroaryloxy groups substituted or unsubstituted, having 2 to 30 carbon atoms; substituted or unsubstituted... The group consisting of any one of the following: alkylthio group with 1 to 30 carbon atoms; arylthio group with 6 to 30 carbon atoms (substituted or unsubstituted); cycloalkylthio group with 3 to 30 carbon atoms (substituted or unsubstituted); heteroarylthio group with 2 to 30 carbon atoms (substituted or unsubstituted); amino group with 0 to 40 carbon atoms (substituted or unsubstituted); silyl group with 0 to 40 carbon atoms (substituted or unsubstituted); germanyl group with 0 to 40 carbon atoms (substituted or unsubstituted); thiol group; hydroxyl group; nitro group; cyano group; or halogen group.

[0023] However, this excludes the case where both Ar1 and Ar2 are selected from hydrogen, deuterium, and tritium.

[0024] The linking groups L1 and L2 may be the same or different from each other, and each is independently a single bond, or each is independently a linking group selected from any one of the following: arylene groups with 6 to 24 substituted or unsubstituted carbon atoms, heteroarylene groups with 3 to 24 substituted or unsubstituted carbon atoms, and arylene groups with 8 to 24 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring.

[0025] In the chemical formula 1, "substituted" in "substituted or unsubstituted" means substituted by one or more substituents selected from the group consisting of: deuterium, tritium, cyano, halogen, thiol, hydroxyl, nitro, alkyl with 1 to 30 carbon atoms, haloalkyl with 1 to 30 carbon atoms, alkenyl with 2 to 24 carbon atoms, alkynyl with 2 to 24 carbon atoms, cycloalkyl with 3 to 24 carbon atoms, heteroalkyl with 1 to 24 carbon atoms, aryl with 6 to 24 carbon atoms, aralkyl with 7 to 24 carbon atoms, alkylaryl with 7 to 24 carbon atoms, heteroaryl with 2 to 24 carbon atoms, heteroaryl with 3 to 24 carbon atoms, alkylheteroaryl with 3 to 24 carbon atoms, and alkoxy with 1 to 24 carbon atoms. The substituents include cycloalkyl groups with 7 to 30 carbon atoms condensed with aromatic hydrocarbon rings, cycloalkyl groups with 5 to 30 carbon atoms condensed with aromatic heterocyclic rings, heterocycloalkyl groups with 6 to 30 carbon atoms condensed with aromatic hydrocarbon rings, aryl groups with 7 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, aryl groups with 6 to 30 carbon atoms condensed with aliphatic heterocyclic rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic heterocyclic rings, amino groups with 1 to 30 carbon atoms, silyl groups with 1 to 30 carbon atoms, germanyl groups with 1 to 30 carbon atoms, aryloxy groups with 6 to 24 carbon atoms, and arylthionyl groups with 6 to 24 carbon atoms, wherein one or more hydrogen atoms in the substituents can be substituted with deuterium or tritium.

[0026] Furthermore, the present invention provides a compound represented by the above [Chemical Formula 1] that can be used as a light-emitting layer of an organic light-emitting element.

[0027] The organic light-emitting diode (OLED) according to the present invention can have excellent characteristics such as low voltage driving, high luminous efficiency and long life.

[0028] In particular, in the organic light-emitting element according to the present invention, when at least one of the plurality of light-emitting layers uses a compound represented by the above-described chemical formula 1, and at least one of the remaining light-emitting layers uses an anthracene compound represented by chemical formula 2 (described later), it can exhibit the characteristics of low voltage drive, high luminous efficiency and long lifetime. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an organic light-emitting element according to a specific embodiment of the present invention. Detailed Implementation

[0030] The present invention will now be described in more detail. In the various figures of the present invention, the size or dimensions of the structures are shown enlarged or reduced compared to their actual dimensions for the sake of clarity of the invention, and well-known configurations are omitted to highlight characteristic configurations, and therefore the invention is not limited to the figures.

[0031] Furthermore, the sizes and thicknesses of the various components shown in the accompanying drawings are arbitrarily depicted for ease of explanation, and the present invention is not limited to the content shown in the drawings. The thicknesses are enlarged in the drawings to clearly represent multiple layers and regions. Also, the thicknesses of some layers and regions are exaggerated in the drawings for ease of explanation. When referring to layers, films, regions, plates, etc., as being "on top" of other parts, this includes not only the case where they are located "immediately above" other parts, but also the case where another part is in between.

[0032] Furthermore, throughout the specification, when a part is mentioned as "including" a certain component, unless otherwise stated, other components are not excluded, and it means that other components may also be included. Also, throughout the specification, "located on..." indicates that it is located above or below the object part, and does not necessarily mean that it is located on the upper side based on the direction of gravity.

[0033] The present invention provides an organic light-emitting element, characterized in that it comprises: a first electrode; a second electrode facing the first electrode; a first light-emitting layer sandwiched between the first electrode and the second electrode, and comprising a first host and a first dopant; and a second light-emitting layer comprising a second host and a second dopant, wherein at least one of the first host and the second host comprises one or more compounds represented by the following [Chemical Formula 1].

[0034] [Chemical Formula 1]

[0035]

[0036] In the chemical formula 1,

[0037] A1 is an aromatic heterocycle with 2 to 30 carbon atoms, either substituted or unsubstituted.

[0038] The A2 is selected from any one of the following: an aromatic hydrocarbon ring having 6 to 30 carbon atoms (substituted or unsubstituted), an aromatic heterocycle having 2 to 30 carbon atoms (substituted or unsubstituted), and an aromatic hydrocarbon ring condensed with an aliphatic hydrocarbon ring having 8 to 30 carbon atoms (substituted or unsubstituted).

[0039] The substituents R1 and R2 may be the same or different from each other, and are selected from any one of the following: alkyl groups with 1 to 30 carbon atoms (substituted or unsubstituted), aryl groups with 6 to 50 carbon atoms (substituted or unsubstituted), heteroaryl groups with 2 to 50 carbon atoms (substituted or unsubstituted), and aryl groups with 8 to 30 carbon atoms (substituted or unsubstituted) condensed with an aliphatic hydrocarbon ring.

[0040] The substituents Ar1 and Ar2 may be the same as or different from each other, and are each independently selected from hydrogen, deuterium, tritium, alkyl groups with 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups with 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups with 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups with 2 to 30 substituted or unsubstituted carbon atoms, aryl groups with 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups with 3 to 30 substituted or unsubstituted carbon atoms, etc. Cycloalkenyl groups with 5 to 30 substituted carbon atoms, heterocyclic alkyl groups with 2 to 30 substituted or unsubstituted carbon atoms, heteroalkyl groups with 2 to 50 substituted or unsubstituted carbon atoms, heteroaryl groups with 2 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups condensed with aromatic hydrocarbon rings with 7 to 30 substituted or unsubstituted carbon atoms, cycloalkyl groups condensed with aromatic heterocycles with 5 to 30 substituted or unsubstituted carbon atoms, and cycloalkyl groups condensed with aromatic hydrocarbon rings with 6 to 30 substituted or unsubstituted carbon atoms. Heterocyclic alkyl groups of aromatic hydrocarbon rings; aryl groups condensed with aliphatic hydrocarbon rings, substituted or unsubstituted, having 8 to 30 carbon atoms; heteroaryl groups condensed with aliphatic hydrocarbon rings, substituted or unsubstituted, having 1 to 30 carbon atoms; aryl groups substituted or unsubstituted, having 6 to 30 carbon atoms; cycloalkoxy groups substituted or unsubstituted, having 3 to 30 carbon atoms; heteroaryloxy groups substituted or unsubstituted, having 2 to 30 carbon atoms; substituted or unsubstituted... The group consisting of any one of the following: alkylthio group with 1 to 30 carbon atoms; arylthio group with 6 to 30 carbon atoms (substituted or unsubstituted); cycloalkylthio group with 3 to 30 carbon atoms (substituted or unsubstituted); heteroarylthio group with 2 to 30 carbon atoms (substituted or unsubstituted); amino group with 0 to 40 carbon atoms (substituted or unsubstituted); silyl group with 0 to 40 carbon atoms (substituted or unsubstituted); germanyl group with 0 to 40 carbon atoms (substituted or unsubstituted); thiol group; hydroxyl group; nitro group; cyano group; or halogen group.

[0041] However, this excludes the case where both Ar1 and Ar2 are selected from hydrogen, deuterium, and tritium.

[0042] The linking groups L1 and L2 may be the same or different from each other, and each is independently a single bond, or each is independently a linking group selected from any one of the following: aryl groups with 6 to 24 substituted or unsubstituted carbon atoms, heteroaryl groups with 3 to 24 substituted or unsubstituted carbon atoms, and aryl groups with 8 to 24 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring.

[0043] In the chemical formula 1, "substituted" in "substituted or unsubstituted" means substituted by one or more substituents selected from the group consisting of: deuterium, tritium, cyano, halogen, thiol, hydroxyl, nitro, alkyl with 1 to 30 carbon atoms, haloalkyl with 1 to 30 carbon atoms, alkenyl with 2 to 24 carbon atoms, alkynyl with 2 to 24 carbon atoms, cycloalkyl with 3 to 24 carbon atoms, heteroalkyl with 1 to 24 carbon atoms, aryl with 6 to 24 carbon atoms, aralkyl with 7 to 24 carbon atoms, alkylaryl with 7 to 24 carbon atoms, heteroaryl with 2 to 24 carbon atoms, heteroaryl with 3 to 24 carbon atoms, alkylheteroaryl with 3 to 24 carbon atoms, and alkoxy with 1 to 24 carbon atoms. The substituents include cycloalkyl groups with 7 to 30 carbon atoms condensed with aromatic hydrocarbon rings, cycloalkyl groups with 5 to 30 carbon atoms condensed with aromatic heterocyclic rings, heterocycloalkyl groups with 6 to 30 carbon atoms condensed with aromatic hydrocarbon rings, aryl groups with 7 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, aryl groups with 6 to 30 carbon atoms condensed with aliphatic heterocyclic rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic heterocyclic rings, amino groups with 1 to 30 carbon atoms, silyl groups with 1 to 30 carbon atoms, germanyl groups with 1 to 30 carbon atoms, aryloxy groups with 6 to 24 carbon atoms, and arylthionyl groups with 6 to 24 carbon atoms, wherein one or more hydrogen atoms in the substituents can be substituted with deuterium or tritium.

[0044] Furthermore, considering the range of alkyl or aryl groups such as "substituted or unsubstituted alkyl groups with 1 to 30 carbon atoms" and "substituted or unsubstituted aryl groups with 5 to 50 carbon atoms" as described in this invention, the range of carbon atoms for alkyl groups with 1 to 30 carbon atoms and aryl groups with 6 to 50 carbon atoms respectively represents the total number of carbon atoms constituting the alkyl or aryl moiety when the substituted portion of the substituent is considered unsubstituted. For example, a phenyl group substituted with a butyl group at the para position should be considered equivalent to an aryl group with 6 carbon atoms substituted with a butyl group having 4 carbon atoms.

[0045] The aryl group used as a substituent in the compounds of the present invention is an organic radical derived from an aromatic hydrocarbon by removing a hydrogen atom. In the presence of a substituent in the aryl group, it is capable of fused with adjacent substituents to form additional rings. Furthermore, the aryl group may comprise an organic radical obtained by removing a hydrogen atom from an aromatic ring formed by the condensation of two aromatic rings.

[0046] Specific examples of the aryl group include phenyl, o-phenyl, meta-phenyl, para-phenyl, o-terphenyl, meta-terphenyl, para-terphenyl, naphthyl, anthraceneyl, phenanthryl, pyrene, indene, fluorenyl, spirodifluorenyl, tetrahydronaphthyl, perylene, etc. Aromatic free radicals such as benzo[9,10]phenanthryl, tetraphenyl, fluoranthyl, benzo[9,10]phenanthryl, etc., but not limited to these, may also include organic free radicals obtained by removing a hydrogen atom from an aromatic ring formed by the condensation of two aromatic rings, such as an aromatic ring with a condensed fluorene ring and a benzene ring or an aromatic ring with a condensed fluorene ring and a phenanthrene ring.

[0047] Furthermore, one or more hydrogen atoms in the aryl group may be replaced by a deuterium atom, a halogen atom, a hydroxyl group, a nitro group, a cyano group, a silyl group, an amino group, a germanyl group, an amido group, a hydrazine group, a hydrazone group, a carboxyl group, a sulfonic acid group, a phosphoric acid group, an alkyl group having 1 to 24 carbon atoms, a haloalkyl group having 1 to 24 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, a heteroalkyl group having 1 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, an alkylaryl group having 7 to 24 carbon atoms, a heteroaryl group having 2 to 24 carbon atoms, a heteroaryl group having 3 to 24 carbon atoms, or an alkylheteroaryl group having 3 to 24 carbon atoms.

[0048] In this invention, the aromatic hydrocarbon ring can represent an aromatic ring composed of carbon and hydrogen, and the aliphatic hydrocarbon ring can represent a hydrocarbon ring composed of carbon and hydrogen that is not an aromatic hydrocarbon ring. Preferably, the aliphatic hydrocarbon ring can be composed of at least 30% of the carbon atoms forming the ring via sp... 3 A hydrocarbon ring formed by orbital structure and including 0 to 3 double and / or triple bonds within the ring; more preferably, the aliphatic hydrocarbon ring may be composed of at least 50% of the carbon atoms forming the ring via sp... 3 The hydrocarbon ring is formed by orbitals and includes 0 to 2 double and / or triple bonds within the ring.

[0049] Furthermore, the aryl group condensed with the aliphatic hydrocarbon ring in this invention can represent a cyclic substituent that is formed by the condensation of two adjacent carbon atoms in the aliphatic hydrocarbon ring and two connected carbon atoms (excluding the carbon atom that becomes an organic radical by removing one hydrogen atom from the carbon atom forming the ring within the aryl group) sharing a double bond and having non-aromaticity overall. Specific examples include tetrahydronaphthyl, tetrahydrobenzocycloheptenyl, tetrahydrophenanthryl, tetrahydroanthryl, octahydrobenzo[9,10]phenanthryl, etc., but are not limited thereto.

[0050] The heteroaryl group used as a substituent in the compounds of the present invention can represent an aryl group of a cyclic aromatic system having 2 to 24 carbon atoms, comprising one, two, or three heteroatoms selected from N, O, P, Si, S, Ge, Se, and Te within the aromatic ring, and the remaining ring atom being carbon. Furthermore, the ring can be fused to form a ring. Additionally, one or more hydrogen atoms in the heteroaryl group can be replaced by substituents similar to those in the case of the aryl group.

[0051] Specific examples of the aforementioned heteroaryl groups include thiophene, furanyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinel, carbaolinyl, acenaphthenequinoxalyl, indenequinoxalyl, indeneisoquinoxalyl, indenequinoxalyl, pyridinylindolyl, pyrazinyl, pyrazinyl, quinolinyl, quinoxalyl, phthalazinyl, pyridinylpyrimidinyl, pyridinylpyrazinyl, pyrazinylpyrazinyl, iso... Quinolinyl, indolyl, carbazole, benzoxazole group, benzimidazole group, benzothiazolyl, benzocarbazole, benzofuranyl, benzothiophene, benzoselenophene, dibenzothiophene, dibenzofuranyl, dibenzoselenophene, phenanthrolinel, thiazolyl, isoxazolyl, thiadiazolyl, benzothiazolyl, phenoxazinyl, phenthiazinyl, azadibenzofuranyl, azadibenzothiophene, azadibenzoselenophene, indolyl carbazole, etc., but not limited to these.

[0052] Furthermore, in this invention, the aromatic heterocycle can represent one or more aromatic carbons in an aromatic hydrocarbon ring that are replaced by heteroatoms. Preferably, one to three aromatic carbons in the aromatic hydrocarbon in the aromatic heterocycle can be replaced by one or more heteroatoms selected from N, O, P, Si, S, Ge, Se, and Te.

[0053] Furthermore, the heteroaryl group condensed with an aliphatic hydrocarbon ring serves as a substituent in a structure where the heteroaryl group replaces the aryl group in the condensed aliphatic hydrocarbon ring. Specific examples include tetrahydroindolyl, tetrahydrobenzofuranyl, tetrahydrobenzothiophenyl, tetrahydrocarbazoyl, tetrahydrodibenzofuranyl, tetrahydroquinolinyl, tetrahydroquinoxalinyl, etc., but are not limited to these.

[0054] Furthermore, in this invention, the aromatic heterocycle can represent one or more aromatic carbons in an aromatic hydrocarbon ring that are replaced by heteroatoms. Preferably, one to three aromatic carbons in the aromatic hydrocarbon in the aromatic heterocycle can be replaced by one or more heteroatoms selected from N, O, P, Si, S, Ge, Se, and Te.

[0055] In this invention, the term "condensed ring containing aromatic hydrocarbon rings and aliphatic hydrocarbon rings" can refer to a condensed ring in which two adjacent carbon atoms in the aromatic hydrocarbon ring and two adjacent carbon atoms in the aliphatic hydrocarbon ring are shared with each other. Examples of condensed rings include tetrahydronaphthalene ring and dihydroindene ring, which are condensed by sharing two adjacent carbon atoms in benzene ring and cyclohexane ring, respectively.

[0056] Furthermore, in this invention, the term "condensed ring containing an aromatic heterocycle and an aliphatic hydrocarbon ring" can refer to a condensed ring in which two adjacent carbon atoms in the aromatic heterocycle and two adjacent carbon atoms in the aliphatic hydrocarbon ring are shared with each other. For example, a hexahydrodibenzofuran ring condensed in a benzofuran ring and a cyclohexane ring can be cited.

[0057] The alkyl group used as a substituent in this invention is a substituent in which one hydrogen atom has been removed from an alkane. It includes straight-chain and branched-chain structures. Specific examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, and 3,3-dimethyl... The alkyl group may contain, but is not limited to, 2-ethylbutyl, heptyl, n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethylheptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 2-methylpentyl, 4-methylhexyl, 5-methylhexyl, etc., and one or more hydrogen atoms in the alkyl group may be substituted with substituents in the same manner as those in the case of the aryl group.

[0058] In this invention, the alkyl halogroup used as a substituent can represent a substituent in which one or more hydrogen atoms in the alkyl group are replaced by a halogen group, preferably, the halogen group can be a fluorine atom.

[0059] In the compounds of the present invention, the term "cyclic" in cycloalkyl, cycloalkoxy, etc., used as substituents can refer to a substituent capable of forming a monocyclic or polycyclic structure of an alkyl or alkoxy saturated hydrocarbon. Specific examples of cycloalkyl groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, methylcyclopentyl, methylcyclohexyl, ethylcyclopentyl, ethylcyclohexyl, adamantyl, dicyclopentadienyl, decahydronaphthyl, norbornyl, bornyl, isobornyl, etc., but are not limited thereto. One or more hydrogen atoms in the cycloalkyl group can be replaced by substituents similar to those in the case of aryl groups, and the same applies to cycloalkoxy groups.

[0060] Furthermore, in this invention, the heterocyclic alkyl group can mean that one or more carbons in the ring of the substituent constituting the cycloalkane structure are replaced by heteroatoms. Preferably, one to three carbons can be replaced by one or more heteroatoms selected from N, O, P, S, Si, Ge, Se, and Te.

[0061] Furthermore, the cycloalkyl group condensed with the aromatic hydrocarbon ring or aromatic heterocycle can represent a cyclic substituent that is formed by the condensation of two adjacent carbon atoms within the aromatic hydrocarbon ring or aromatic heterocycle and two adjacent carbon atoms (excluding the carbon atom that becomes an organic radical by removing one hydrogen atom from the carbon atom forming the ring within the cycloalkyl group) sharing a double bond and exhibiting non-aromaticity overall. Specific examples include tetrahydronaphthyl, tetrahydrophenanthryl, tetrahydroquinolinyl, tetrahydroquinoxalinyl, cyclopentabenzofuranyl, etc., but are not limited to these.

[0062] Furthermore, the heterocyclic alkyl group condensed with the aromatic hydrocarbon ring can represent a cycloalkyl group in which one or more carbon atoms in the cycloalkane ring are replaced by heteroatoms. Preferably, it can be a substituent group in which one to three carbons in the cycloalkane ring are replaced by one or more heteroatoms selected from N, O, P, S, Si, Ge, Se, and Te. Specific examples include hexahydrodibenzofuranyl, hexahydrocarbazoleyl, hexahydrodibenzothiophenyl, dihydrobenzodioxinyl, etc., but it is not limited to these. Overall, it exhibits non-aromaticity.

[0063] Furthermore, the aryl or heteroaryl group condensed with an aliphatic heterocycle serves as a substituent in the structure where the aliphatic heterocycle replaces the aliphatic hydrocarbon ring in the condensed aryl or heteroaryl group condensed with the aliphatic hydrocarbon ring. Specific examples include benzodihydropyranyl, dihydropyrazinopyridyl, dihydrobenzothiaranyl, dihydrobenzodioxinyl, dihydrothiopyridinopyrimidyl, dihydropyrazinopyrimidyl, etc., but are not limited to these, and generally exhibits non-aromaticity.

[0064] Furthermore, the aliphatic heterocycle can represent one or more carbon atoms in the aliphatic hydrocarbon ring that are replaced by heteroatoms. Preferably, one to three carbon atoms in the aliphatic hydrocarbon in the aliphatic heterocycle can be replaced by one or more heteroatoms selected from N, O, and S.

[0065] The alkoxy group used as a substituent in the compounds of the present invention is a substituent with an oxygen atom attached to the end of an alkyl or cycloalkyl group. Specific examples include methoxy, ethoxy, propoxy, isobutoxy, sec-butoxy, pentoxy, isopentoxy, hexoxy, cyclobutoxy, cyclopentoxy, adamantoxy, dicyclopentoxy, borneoloxy, isoborneoloxy, etc., but are not limited thereto. One or more hydrogen atoms of the alkoxy group can be replaced by substituents in the same way as those in the case of the aryl group.

[0066] Specific examples of aralkyl groups used as substituents in the compounds of the present invention include benzyl (benzyl), phenethyl, phenylpropyl, naphthylmethyl, naphthylethyl, etc., but are not limited thereto. One or more hydrogen atoms of the aralkyl group may be replaced by substituents in the same manner as those of the aryl group.

[0067] Specific examples of alkylaryl groups used as substituents in the compounds of the present invention include tolyl, xylyl, dimethylnaphthyl, tert-butylphenyl, tert-butylnaphthyl, tert-butylphenanthryl, etc., but are not limited thereto. One or more hydrogen atoms of the alkylaryl group may be replaced by substituents in the same manner as those of the aryl group.

[0068] Furthermore, in this invention, alkenyl group represents an alkyl substituent comprising a carbon-carbon double bond consisting of two carbon atoms, and alkynyl group represents an alkyl substituent comprising a carbon-carbon triple bond consisting of two carbon atoms.

[0069] Furthermore, the alkylene group used in this invention is an organic radical derived by removing two hydrogens from an alkane molecule of a saturated hydrocarbon in a straight-chain or branched form. Specific examples of the alkylene group include methylene, ethylene, propylene, isopropylene, isobutylene, sec-butylene, tert-butylene, pentylene, isopentylene, hexylene, etc., but are not limited thereto. One or more hydrogen atoms in the alkylene group can be replaced by substituents in the same way as in the case of the aryl group.

[0070] Furthermore, in this invention, the amino group may include -NH2, alkylamino, aromaticamino, alkylarylamino, arylheteroarylamino, heteroarylamino, etc., where aromaticamino refers to an amino group in which one or two hydrogens of -NH2 are replaced by aryl, alkylamino refers to an amino group in which one or two hydrogens of -NH2 are replaced by alkyl, alkylarylamino refers to an amino group in which one hydrogen of -NH2 is replaced by alkyl and the remaining hydrogen is replaced by aryl, arylheteroarylamino refers to an amino group in which one hydrogen of -NH2 is replaced by aryl and the remaining hydrogen is replaced by heteroaryl, and heteroarylamino refers to an amino group in which one or two hydrogens of -NH2 are replaced by heteroaryl. Examples of the aromaticamino group include substituted or unsubstituted monoarylamino and substituted or unsubstituted diarylamino, and the alkylamino and heteroarylamino groups are also applicable.

[0071] Here, each aryl group in the aromatic amino group and aryl heteroaromatic amino group can be a monocyclic aryl or a polycyclic aryl, and each heteroaromatic group in the heteroaromatic amino group and aryl heteroaromatic amino group can be a monocyclic heteroaromatic or a polycyclic heteroaromatic.

[0072] The silyl group used as a substituent in the compounds of this invention may include -SiH3, alkylsilyl, arylsilyl, alkylarylsilyl, arylheteroarylsilyl, heteroarylsilyl, etc. Arylsilyl refers to a silyl group in which one, two, or three hydrogens in -SiH3 are substituted by an aryl group. Alkylsilyl refers to a silyl group in which one, two, or three hydrogens in -SiH3 are substituted by an alkyl group. Alkylarylsilyl refers to a silyl group in which at least two hydrogens in -SiH3 are substituted by an alkyl group and an aryl group, thus including one or two alkyl groups and their corresponding two or more alkyl groups. An aryl silyl, arylheteroaryl silyl means a silyl group in which at least one hydrogen in -SiH3 is substituted by an aryl and a heteroaryl group to include one or two aryl groups and their corresponding two or one heteroaryl groups, heteroaryl silyl means a silyl group in which one, two or three hydrogens in -SiH3 are substituted by a heteroaryl group, examples of which include substituted or unsubstituted monoaryl silyl, substituted or unsubstituted diaryl silyl, or substituted or unsubstituted triaryl silyl, and alkyl silyl and heteroaryl silyl are also applicable.

[0073] Here, each aryl group in the arylsilyl group and the arylheteroarylsilyl group can be a monocyclic aryl or a polycyclic aryl, and each heteroaryl group in the heteroarylsilyl group and the arylheteroarylsilyl group can be a monocyclic heteroaryl or a polycyclic heteroaryl.

[0074] Furthermore, specific examples of the silyl group may include trimethylsilyl, triethylsilyl, triphenylsilyl, trimethoxysilyl, dimethoxyphenylsilyl, diphenylmethylsilyl, stilbene silyl, methylcyclobutylsilyl, dimethylfuranylsilyl, etc., and one or more hydrogen atoms in the silyl group may be replaced by substituents in the same manner as in the case of the aryl group.

[0075] Furthermore, in this invention, germanium-based (or methylgermanium-based, or germanium-based) may include -GeH3, alkylgermanium-based, arylgermanium-based, heteroarylgermanium-based, alkylarylgermanium-based, alkylheteroarylgermanium-based, arylheteroarylgermanium-based, etc., and their definitions follow those described in the methylgermanium-based group. As a substituent obtained by replacing the silicon atom (Si) in the methylgermanium-based group with a germanium atom (Ge), it can be applied to each substituent.

[0076] Furthermore, specific examples of the germanium group may include trimethylgermanyl, triethylgermanyl, triphenylgermanyl, trimethoxygermanyl, dimethoxyphenylgermanyl, diphenylmethylgermanyl, stilbene germanyl, methylcyclobutylgermanyl, dimethylfuran methylgermanyl, etc., and one or more hydrogen atoms in the germanium group may be replaced by substituents in the same manner as in the case of the aryl group.

[0077] Furthermore, in this invention, "substituent (B) adjacent to substituent (A) in the aromatic ring" refers to a substituent (B) bonded to an aromatic ring carbon atom adjacent to the aromatic ring carbon atom bonded to substituent A in the aromatic ring; "substituent (B) adjacent to substituent A in the alicyclic ring" refers to a substituent (B) bonded to a ring carbon atom adjacent to the ring carbon atom bonded to substituent (A) in the alicyclic ring; and "substituent (B) adjacent to substituent (A) bonded to a specific carbon atom in the aliphatic chain structure" refers to a substituent (B) bonded to a specific carbon atom bonded to substituent A in the aliphatic chain structure.

[0078] Furthermore, in this invention, as a more preferred example, the "substituted or unsubstituted" in the chemical formula 1 may refer to substitution by one or more substituents selected from the group consisting of: deuterium, cyano, halogen, hydroxyl, nitro, alkyl with 1 to 12 carbon atoms, haloalkyl with 1 to 12 carbon atoms, alkenyl with 2 to 12 carbon atoms, alkynyl with 2 to 12 carbon atoms, cycloalkyl with 3 to 12 carbon atoms, heteroalkyl with 1 to 12 carbon atoms, aryl with 6 to 18 carbon atoms, aralkyl with 7 to 20 carbon atoms, alkylaryl with 7 to 20 carbon atoms, heteroaryl with 2 to 18 carbon atoms, heteroaryl with 3 to 18 carbon atoms, and carbon-12 alkyl groups. The substituents are alkyl heteroaryl groups with 3 to 18 carbon atoms, cycloalkyl groups with 9 to 20 carbon atoms condensed with an aromatic hydrocarbon ring, cycloalkyl groups with 7 to 20 carbon atoms condensed with an aromatic heterocyclic ring, heterocycloalkyl groups with 9 to 20 carbon atoms condensed with an aromatic hydrocarbon ring, aryl groups with 9 to 20 carbon atoms condensed with an aliphatic hydrocarbon ring, heteroaryl groups with 7 to 20 carbon atoms condensed with an aliphatic hydrocarbon ring, alkoxy groups with 1 to 12 carbon atoms, amino groups with 1 to 18 carbon atoms, silyl groups with 1 to 18 carbon atoms, germanyl groups with 1 to 18 carbon atoms, aryloxy groups with 6 to 18 carbon atoms, and arylthionyl groups with 6 to 18 carbon atoms, wherein one or more hydrogen atoms in each of the substituents can be substituted with deuterium or tritium.

[0079] Furthermore, in this invention, as a more preferred example, the cycloalkyl group having 7 to 30 carbon atoms condensed with an aromatic hydrocarbon ring may be a cycloalkyl group having 9 to 20 carbon atoms condensed with an aromatic hydrocarbon ring, whether substituted or unsubstituted.

[0080] Furthermore, in this invention, as a more preferred example, the cycloalkyl group condensed with aromatic heterocycles having 5 to 30 carbon atoms, whether substituted or unsubstituted, may be a cycloalkyl group condensed with aromatic heterocycles having 7 to 20 carbon atoms, whether substituted or unsubstituted.

[0081] Furthermore, in this invention, as a more preferred example, the heterocyclic alkyl group with 6 to 30 carbon atoms condensed with an aromatic hydrocarbon ring, whether substituted or unsubstituted, may be a heterocyclic alkyl group with 9 to 20 carbon atoms condensed with an aromatic hydrocarbon ring, whether substituted or unsubstituted.

[0082] Furthermore, in this invention, as a more preferred example, the aryl group with 8 to 30 carbon atoms condensed with an aliphatic hydrocarbon ring, whether substituted or unsubstituted, may be an aryl group with 9 to 20 carbon atoms condensed with an aliphatic hydrocarbon ring, whether substituted or unsubstituted.

[0083] Furthermore, in this invention, as a more preferred example, the heteroaryl group with 5 to 30 carbon atoms condensed with an aliphatic hydrocarbon ring, whether substituted or unsubstituted, may be a heteroaryl group with 7 to 20 carbon atoms condensed with an aliphatic hydrocarbon ring, whether substituted or unsubstituted.

[0084] Furthermore, in this invention, as a more preferred example, the aryl group condensed with an aliphatic heterocycle having 6 to 30 carbon atoms, whether substituted or unsubstituted, may be an aryl group condensed with an aliphatic heterocycle having 7 to 20 carbon atoms, whether substituted or unsubstituted.

[0085] Furthermore, in this invention, as a more preferred example, the heteroaryl group condensed with aliphatic heterocycles having 5 to 30 substituted or unsubstituted carbon atoms can be a heteroaryl group condensed with aliphatic heterocycles having 6 to 20 substituted or unsubstituted carbon atoms.

[0086] Furthermore, in the specification of this invention, "the R..." 31 To R 37 The case of "being able to connect with the A1 to A3 rings to additionally form alicyclic or aromatic monocyclic or polycyclic rings" means that it is possible to separately form monocyclic or polycyclic rings selected from R 31 To R 37 Each substituent (R) 31 To R 37 Substituents) remove a hydrogen radical and connect them to additionally form rings by removing a hydrogen radical from each of the A1 to A3 rings, which are used to additionally form alicyclic or aromatic monocyclic or polycyclic rings, in the "R" 32 and the R 33 The R 34 and the R 35 and the R 36 and the R 37 The same applies to the phrase "monocyclic or polycyclic compounds that can connect with each other to additionally form alicyclic or aromatic monocyclic or polycyclic compounds," which refers to the compounds formed by the R group. 32 and R 33 In the case of forming a ring, it means that it is possible to obtain from R 32 Remove a hydrogen radical and from R 33 Remove a hydrogen radical and connect them to form an additional ring.

[0087] In this invention, the material for at least one light-emitting layer in an organic light-emitting element comprising multiple light-emitting layers is a compound represented by the aforementioned chemical formula 1. The compound represented by the aforementioned chemical formula 1 is characterized by having an A1 ring and an A2 ring condensed on both sides of a five-membered ring comprising R1 and R2. Here, the A1 ring is an aromatic heterocycle with 2 to 30 substituted or unsubstituted carbon atoms, and the A2 ring is any one of the following: an aromatic hydrocarbon ring with 6 to 30 substituted or unsubstituted carbon atoms, an aromatic heterocycle with 2 to 30 substituted or unsubstituted carbon atoms, or an aromatic hydrocarbon ring with 8 to 30 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring. "L1-Ar1" is bound to the A1 ring, and "L2-Ar2" is bound to the A2 ring.

[0088] As an example, R1 and R2 in the chemical formula 1 may be the same or different from each other, and may be alkyl groups with 1 to 20 carbon atoms that are substituted or unsubstituted, respectively.

[0089] As an example, A1 in the chemical formula 1 may be selected from any one of the following: a benzofuran ring substituted or unsubstituted with deuterium, a dibenzofuran ring substituted or unsubstituted with deuterium, a benzothiophene ring substituted or unsubstituted with deuterium, and a dibenzothiophene ring substituted or unsubstituted with deuterium.

[0090] As an example, A2 in the chemical formula 1 can be any one of an aromatic hydrocarbon ring with 6 to 18 carbon atoms that is substituted or not substituted with deuterium, or an aromatic heterocycle with 2 to 18 carbon atoms that is substituted or not substituted with deuterium.

[0091] As an example, Ar1 and Ar2 in Formula 1 may be the same as or different from each other, and may be independently selected from any one of the following: aryl group with 6 to 18 substituted or unsubstituted carbon atoms, heteroaryl group with 2 to 18 substituted or unsubstituted carbon atoms, aryl group with 8 to 20 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring, silyl group with 1 to 30 substituted or unsubstituted carbon atoms, and germanyl group with 1 to 30 substituted or unsubstituted carbon atoms.

[0092] As an example, the compound represented by [Chemical Formula 1] may be selected from the group represented by compounds 1-1 to 1-51 below, but is not limited thereto.

[0093]

[0094]

[0095]

[0096] Furthermore, in this invention, "(organic layer or light-emitting layer) contains one or more organic compounds" can be interpreted as "(organic layer) may contain one organic compound that falls within the scope of this invention or two or more different compounds that fall within the scope of said organic compound".

[0097] The compound represented by the chemical formula 1 according to the present invention can be used as a host in the first light-emitting layer or the second light-emitting layer. That is, the organic light-emitting element according to the present invention may include one or more of the compounds represented by the chemical formula 1 as the host material in the light-emitting layer.

[0098] As an embodiment, in the organic light-emitting element according to the present invention, one of the first body and the second body may include one or more compounds represented by [Chemical Formula 1] above, and the other may include one or more anthracene compounds represented by [Chemical Formula 2] below. For example, the first body of the organic light-emitting element according to the present invention may include one or more compounds represented by [Chemical Formula 1] above, and the second body may include one or more anthracene compounds represented by [Chemical Formula 2] below; the opposite is also possible.

[0099] [Chemical Formula 2]

[0100]

[0101] In the chemical formula 2,

[0102] The substituent R 11 To R 18They may be identical or different from each other, and are each independently selected from hydrogen, deuterium, tritium, alkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups having 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups having 2 to 30 substituted or unsubstituted carbon atoms, aryl groups having 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 3 to 30 substituted or unsubstituted carbon atoms, and other groups having substituted or unsubstituted carbon atoms. Cycloalkenyl groups with 5 to 30 carbon atoms, heterocyclic alkyl groups with 2 to 30 carbon atoms (substituted or unsubstituted), heteroalkyl groups with 2 to 50 carbon atoms (substituted or unsubstituted), heteroaryl groups with 2 to 50 carbon atoms (substituted or unsubstituted), cycloalkyl groups with 7 to 30 carbon atoms (substituted or unsubstituted), cycloalkyl groups with 5 to 30 carbon atoms (substituted or unsubstituted), and heterocyclic groups with 6 to 30 carbon atoms (substituted or unsubstituted). Alkyl, aryl group with 8 to 30 condensed aliphatic hydrocarbon rings (substituted or unsubstituted), heteroaryl group with 5 to 30 condensed aliphatic hydrocarbon rings (substituted or unsubstituted), alkoxy group with 1 to 30 substituted or unsubstituted carbon atoms, aryloxy group with 6 to 30 substituted or unsubstituted carbon atoms, cycloalkoxy group with 3 to 30 substituted or unsubstituted carbon atoms, heteroaryloxy group with 2 to 30 substituted or unsubstituted carbon atoms, and so on. The following groups are included: alkylthio groups with 1 to 30 carbon atoms; arylthio groups with 6 to 30 carbon atoms (substituted or unsubstituted); cycloalkylthio groups with 3 to 30 carbon atoms (substituted or unsubstituted); heteroarylthio groups with 2 to 30 carbon atoms (substituted or unsubstituted); amino groups with 0 to 40 carbon atoms (substituted or unsubstituted); silyl groups with 0 to 40 carbon atoms (substituted or unsubstituted); germanyl groups with 0 to 40 carbon atoms (substituted or unsubstituted); thiols; hydroxyl groups; nitro groups; cyano groups; and halogen groups.

[0103] The connecting base L 11 and L 12 They may be the same as or different from each other, and each is independently a single bond, or each is independently a linker selected from any one of the following: aryl groups having 6 to 24 substituted or unsubstituted carbon atoms, heteroaryl groups having 3 to 24 substituted or unsubstituted carbon atoms, and aryl groups having 8 to 24 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring.

[0104] The Ar 11 And Ar 12They may be identical or different from each other, and each independently selected from any one of the following: aryl groups with 6 to 30 substituted or unsubstituted carbon atoms; heteroaryl groups with 3 to 30 substituted or unsubstituted carbon atoms; cycloalkyl groups with 3 to 30 substituted or unsubstituted carbon atoms; heterocycloalkyl groups with 2 to 30 substituted or unsubstituted carbon atoms; and aryl groups with 8 to 24 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring.

[0105] In the chemical formula 2, the hydrogen atoms bonded to carbon atoms can be replaced by 0 to 60 deuterium or tritium atoms.

[0106] In the chemical formula 2, "substituted" in "substituted or unsubstituted" means substituted by one or more substituents selected from the group consisting of: deuterium, tritium, cyano, haloyl, thiol, hydroxyl, nitro, alkyl with 1 to 30 carbon atoms, haloalkyl with 1 to 30 carbon atoms, alkenyl with 2 to 24 carbon atoms, alkynyl with 2 to 24 carbon atoms, cycloalkyl with 3 to 24 carbon atoms, heteroalkyl with 1 to 24 carbon atoms, aryl with 6 to 24 carbon atoms, aralkyl with 7 to 24 carbon atoms, alkylaryl with 7 to 24 carbon atoms, heteroaryl with 2 to 24 carbon atoms, heteroaryl with 3 to 24 carbon atoms, alkylheteroaryl with 3 to 24 carbon atoms, and alkoxy with 1 to 24 carbon atoms. The substituents include cycloalkyl groups with 7 to 30 carbon atoms condensed with aromatic hydrocarbon rings, cycloalkyl groups with 5 to 30 carbon atoms condensed with aromatic heterocyclic rings, heterocycloalkyl groups with 6 to 30 carbon atoms condensed with aromatic hydrocarbon rings, aryl groups with 7 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, aryl groups with 6 to 30 carbon atoms condensed with aliphatic heterocyclic rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic heterocyclic rings, amino groups with 1 to 30 carbon atoms, silyl groups with 1 to 30 carbon atoms, germanyl groups with 1 to 30 carbon atoms, aryloxy groups with 6 to 24 carbon atoms, and arylthionyl groups with 6 to 24 carbon atoms, wherein one or more hydrogen atoms in the substituents can be substituted with deuterium or tritium.

[0107] As an example, in chemical formula 2, R 11 To R 18 They can be the same or different from each other, and can be hydrogen or deuterium independently.

[0108] As an example, the compound represented by chemical formula 2 may include more than one deuterium.

[0109] In the organic light-emitting element of the present invention, when the first body or the second body comprises one or more anthracene compounds represented by the stated chemical formula 2, the Ar...12 It can be a substituent represented by the following structural formula 12.

[0110] [Structure 12]

[0111]

[0112] In the aforementioned structural formula 12,

[0113] x is O or S.

[0114] The R 21 To R 24 One of them is L in the chemical formula 2. 12 The single key for connection,

[0115] In addition to the L mentioned above 12 R other than the connected single key 21 To R 28 They may be identical or different from each other, and are independently selected from hydrogen, deuterium, tritium, alkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups having 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups having 2 to 30 substituted or unsubstituted carbon atoms, aryl groups having 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 3 to 30 substituted or unsubstituted carbon atoms, cycloalkenyl groups having 5 to 30 substituted or unsubstituted carbon atoms, heterocycloalkyl groups having 2 to 30 substituted or unsubstituted carbon atoms, heteroalkyl groups having 2 to 50 substituted or unsubstituted carbon atoms, heteroaryl groups having 2 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 7 to 30 substituted or unsubstituted carbon atoms, and cycloalkyl groups with a condensed aromatic hydrocarbon ring. The following are possible groupings: cycloalkyl group with 5 to 30 substituted or unsubstituted carbon atoms, cycloalkyl group with 6 to 30 substituted or unsubstituted carbon atoms, aryl group with 8 to 30 substituted or unsubstituted carbon atoms, heteroaryl group with 5 to 30 substituted or unsubstituted carbon atoms, oxy group with 1 to 30 substituted or unsubstituted carbon atoms, thiooxy group with 1 to 30 substituted or unsubstituted carbon atoms, thionyl group with 1 to 30 substituted or unsubstituted carbon atoms, amino group with 0 to 40 substituted or unsubstituted carbon atoms, silyl group with 0 to 40 substituted or unsubstituted carbon atoms, germanyl group with 0 to 40 substituted or unsubstituted carbon atoms, thiol group, hydroxyl group, nitro group, cyano group, and halogen group.

[0116] In the structural formula 12, "substituted" in "substituted or unsubstituted" means substituted by one or more substituents selected from the group consisting of: deuterium, tritium, cyano, haloyl, thiol, hydroxyl, nitro, alkyl with 1 to 30 carbon atoms, haloalkyl with 1 to 30 carbon atoms, alkenyl with 2 to 24 carbon atoms, alkynyl with 2 to 24 carbon atoms, cycloalkyl with 3 to 24 carbon atoms, heteroalkyl with 1 to 24 carbon atoms, aryl with 6 to 24 carbon atoms, aralkyl with 7 to 24 carbon atoms, alkylaryl with 7 to 24 carbon atoms, heteroaryl with 2 to 24 carbon atoms, heteroaryl with 3 to 24 carbon atoms, alkylheteroaryl with 3 to 24 carbon atoms, and condensed alkyl group with 7 to 30 carbon atoms. The substituent comprises a cycloalkyl group having an aromatic hydrocarbon ring, a cycloalkyl group having a condensed aromatic heterocyclic ring having 5 to 30 carbon atoms, a heteroalkyl group having a condensed aromatic hydrocarbon ring having 6 to 30 carbon atoms, an aryl group having a condensed aliphatic hydrocarbon ring having 7 to 30 carbon atoms, a heteroaryl group having a condensed aliphatic hydrocarbon ring having 5 to 30 carbon atoms, an aryl group having a condensed aliphatic heterocyclic ring having 6 to 30 carbon atoms, a heteroaryl group having a condensed aliphatic heterocyclic ring having 5 to 30 carbon atoms, an amino group having 1 to 30 carbon atoms, a silyl group having 1 to 30 carbon atoms, a germanyl group having 1 to 30 carbon atoms, an oxygen group having 1 to 30 carbon atoms, a thiooxy group having 1 to 30 carbon atoms, and a thionyl group having 1 to 30 carbon atoms, wherein one or more hydrogen atoms in the substituent can be substituted with deuterium or tritium.

[0117] As an example, R in the structural formula 12 21 To R 28 It can be any one selected from hydrogen, deuterium, aryl with 6 to 30 substituted or unsubstituted carbon atoms, heteroaryl with 3 to 30 substituted or unsubstituted carbon atoms, and aryl with 8 to 24 substituted or unsubstituted carbon atoms condensed with an aliphatic hydrocarbon ring.

[0118] As a more preferred embodiment, R in structural formula 12 21 To R 28 They can be the same or different from each other, and can each be independently selected from any one of hydrogen, deuterium, aryl groups having 6 to 18 carbon atoms, substituted or unsubstituted.

[0119] As an example, x in the structural formula 12 can be 0.

[0120] As an embodiment, in the organic light-emitting element according to the present invention, one of the first body and the second body may include a compound represented by chemical formula 1, and the other may include two or more anthracene compounds represented by chemical formula 2. In this case, the anthracene compounds represented by chemical formula 2 may be different anthracene compounds from each other. For example, in the organic light-emitting element according to the present invention, the first body may include a compound represented by chemical formula 1, and the second body may include two or more anthracene compounds represented by chemical formula 2. In this case, the compound represented by chemical formula 2 may include two or more different anthracene compounds from each other, and the opposite is also possible.

[0121] As an embodiment, in the organic light-emitting element according to the present invention, where one of the first and second bodies includes a compound represented by Chemical Formula 1 and the other includes two or more anthracene compounds represented by Chemical Formula 2, in one or more of the anthracene compounds represented by Chemical Formula 2, the Ar... 12 It may be an aryl group with 6 to 30 carbon atoms, either substituted or unsubstituted, preferably an aryl group with 6 to 18 carbon atoms, and additionally, in one or more of the anthracene compounds represented by Formula 2, the Ar... 12 It can be a heteroaryl group with 2 to 30 carbon atoms, substituted or unsubstituted, preferably a heteroaryl group with 3 to 18 carbon atoms, substituted or unsubstituted.

[0122] As an embodiment, more preferably, in the organic light-emitting element according to the present invention, where one of the first body and the second body includes a compound represented by the chemical formula 1 and the other includes two or more anthracene compounds represented by the chemical formula 2, in one or more of the anthracene compounds represented by the chemical formula 2, the Ar 12 It may be an aryl group having 6 to 30 carbon atoms, either substituted or unsubstituted, and in one or more of the anthracene compounds represented by Formula 2, the Ar 12 It can be a substituent represented by the structural formula 12.

[0123] As an embodiment, in the organic light-emitting element according to the present invention, the first light-emitting layer may include one or more compounds represented by the chemical formula 1 as a first host, and the second light-emitting layer may include one or more compounds represented by the chemical formula 2 as a second host.

[0124] As an embodiment, in the organic light-emitting element according to the present invention, if one of the first body and the second body includes a compound represented by the chemical formula 1 and the other includes an anthracene compound represented by the chemical formula 2, the first light-emitting layer may include the compound represented by the chemical formula 1 and a body compound different from the compound represented by the chemical formula 1 as the first body in a ratio of 1:9 to 9:1. More preferably, it may include the above-mentioned compounds in a ratio of 3:7 to 7:3.

[0125] As an embodiment, in the organic light-emitting element according to the present invention, the first light-emitting layer may additionally include a compound represented by Chemical Formula 1 and a host compound different from the compound represented by Chemical Formula 1 as a first host. In this case, the first host used in the first light-emitting layer may include the compound represented by Chemical Formula 1 and a compound different from the compound represented by Chemical Formula 1 in a ratio of 1:9 to 9:1, and more preferably, may include the above-mentioned compounds in a ratio of 3:7 to 7:3.

[0126] In this case, if the first body is composed of two or more compounds, they can be mixed and then deposited, co-deposited, or stacked for use. That is, the first body according to the invention can include one or more additional compounds different from the compound represented by the stated chemical formula 1, so that two or more first body compounds can be mixed and then deposited, co-deposited, or stacked for use. In the case of stacking described above, it can be used by stacking compounds different from the compound represented by the stated chemical formula 1 on the upper or lower part of the layer including the compound represented by the stated chemical formula 1 according to the invention.

[0127] Here, when deposition is carried out after mixing different host compounds other than those represented by the chemical formula 1, it means that they are mixed in one deposition source and deposited by sublimation or vaporization. In the case of co-deposition, it means that two or more host compounds are deposited together by sublimation or vaporization in multiple deposition sources.

[0128] That is, in the method of forming the light-emitting layer, a thin film can be formed by depositing (co-depositing) multiple host materials from different multiple deposition sources, or by pre-mixing the multiple host materials and depositing the mixed host materials, or by stacking the host materials to form the light-emitting layer.

[0129] Here, a compound having a structural formula different from that of the compound represented by the chemical formula 1 may also be used as the main compound, or a compound that includes the structure of the chemical formula 1 but is different from the compound that has already been used (which is equivalent to the compound represented by the chemical formula 1).

[0130] Furthermore, existing and publicly disclosed anthracene compounds, benzene-anthracene compounds, phenanthrene compounds, pyrene compounds, fluorene compounds, and spirofluorene compounds can be used as compounds having a structural formula different from that of Formula 1 in the first luminescent layer. Anthracene compounds, carbazole compounds, biphenyl compounds, etc., wherein the anthracene compounds refer to compounds that include at least one (preferably, 1 to 3) anthracene groups in the molecule, and the remaining compounds are benzo[a]anthracene compounds, phenanthrene compounds, pyrene compounds, fluorene compounds, spirofluorene compounds, etc. The terms "carbazole compounds" and "biphenyl compounds" also refer to compounds that include at least one (preferably one to three) corresponding groups within the molecule.

[0131] As an example, in the organic light-emitting element according to the present invention, if one of the first body and the second body includes one or more compounds represented by the chemical formula 1 and the other includes anthracene compounds represented by the chemical formula 2, the other one of the first body and the second body may include two or more different anthracene compounds represented by the chemical formula 2. Preferably, the second light-emitting layer in the organic light-emitting element may include two different anthracene compounds represented by the chemical formula 2 as the second body in a ratio of 1:9 to 9:1. More preferably, it may include the above-mentioned compounds in a ratio of 3:7 to 7:3.

[0132] As an embodiment, in the organic light-emitting element according to the present invention, where the first light-emitting layer may include one or more compounds represented by Chemical Formula 1 as a first host and the second light-emitting layer may include one or more compounds represented by Chemical Formula 2 as a second host, the second light-emitting layer may additionally include a host compound different from the compound represented by Chemical Formula 2 as a second host, in addition to the compound represented by Chemical Formula 2. In this case, the second host used in the second light-emitting layer may include the compound represented by Chemical Formula 2 and the host compound different from the compound represented by Chemical Formula 2 in a ratio of 1:9 to 9:1, and more preferably, may include the above-mentioned compounds in a ratio of 3:7 to 7:3.

[0133] In this case, when the second body is composed of two or more compounds, they can be mixed in a deposition source and deposited by sublimation or vaporization, or they can be sublimated or vaporized separately in multiple deposition sources and co-deposited on the second luminescent layer.

[0134] Here, a compound having a structural formula different from that of the compound represented by chemical formula 2 may also be used as the host compound, or a compound having a structure in the form of chemical formula 2 but different from each other may be used as long as it is different from the compound already used (which is equivalent to the compound represented by chemical formula 2).

[0135] Furthermore, existing and publicly disclosed anthracene compounds, benzene-anthracene compounds, phenanthrene compounds, pyrene compounds, fluorene compounds, and spirofluorene compounds can be used as compounds having a structural formula different from that of chemical formula 2 within the second luminescent layer. For compounds such as carbazole, biphenyl, etc., the explanation is the same as above.

[0136] As an embodiment, in the organic light-emitting element according to the present invention, the first body in the first light-emitting layer may use only the compound represented by the chemical formula 1, and the second body in the second light-emitting layer may include the compound represented by the chemical formula 2 and other compounds different therefrom in a ratio of 1:9 to 9:1, and more preferably, may include the above-mentioned compounds in a ratio of 3:7 to 7:3.

[0137] As an embodiment, in the organic light-emitting element according to the present invention, the first body in the first light-emitting layer may include the compound represented by the chemical formula 1 and other compounds in a ratio of 1:9 to 9:1, more preferably, the above-mentioned compounds may be included in a ratio of 3:7 to 7:3, and the second body in the second light-emitting layer may use the compound represented by the chemical formula 2 alone.

[0138] As an embodiment, in the organic light-emitting element according to the present invention, the first body in the first light-emitting layer may include a compound represented by the chemical formula 1 and a different body compound in a ratio of 1:9 to 9:1, more preferably, the above-mentioned compounds may be included in a ratio of 3:7 to 7:3, and the second body in the second light-emitting layer may be used to include a compound represented by the chemical formula 2 and a different compound in a ratio of 1:9 to 9:1, more preferably, the above-mentioned compounds may be included in a ratio of 3:7 to 7:3.

[0139] As an example, the compounds described below may be used as specific examples of compounds represented by the chemical formula 2, but are not limited thereto.

[0140]

[0141]

[0142]

[0143]

[0144]

[0145]

[0146]

[0147]

[0148]

[0149]

[0150]

[0151]

[0152]

[0153]

[0154]

[0155]

[0156]

[0157]

[0158]

[0159]

[0160]

[0161]

[0162] As an embodiment, in the organic light-emitting element according to the present invention, at least one of the following may be additionally included between the first electrode and the second electrode: a hole injection layer, a hole transport layer, a functional layer having both hole injection and hole transport functions, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.

[0163] As an embodiment, in the organic light-emitting element according to the present invention, at least one of a hole transport layer and a hole injection layer may be provided between the first electrode and the light-emitting layer, and at least one of an electron transport layer and an electron injection layer may be provided between the light-emitting layer and the second electrode.

[0164] As an embodiment, the first light-emitting layer of the organic light-emitting element according to the present invention may include a first host and a first dopant, and the second light-emitting layer may include a second host and a second dopant. In this case, in the organic light-emitting element, at least one of the first dopant in the first light-emitting layer and the second dopant in the second light-emitting layer may include one or more polycyclic compounds represented by the following [Chemical Formula 3]. Preferably, the first dopant in the first light-emitting layer and the second dopant in the second light-emitting layer are the same or different, and may include one or more polycyclic compounds represented by the [Chemical Formula 3].

[0165] [Chemical Formula 3]

[0166]

[0167] In the chemical formula 3,

[0168] Y1 and Y2 are either the same or different from each other, and are independently selected from O, S, and NR. 31 CR 32 R 33 SiR 34 R 35 and GeR 36 R 37 Any one of them,

[0169] A1 to A3 may be the same as or different from each other, and each is independently selected from any one of the following: an aromatic hydrocarbon ring having 6 to 50 substituted or unsubstituted carbon atoms; an aliphatic hydrocarbon ring having 5 to 50 substituted or unsubstituted carbon atoms; an aromatic hydrocarbon ring condensed with an aliphatic hydrocarbon ring having 8 to 50 substituted or unsubstituted carbon atoms; an aromatic heterocycle having 2 to 50 substituted or unsubstituted carbon atoms; and an aromatic heterocycle condensed with an aliphatic hydrocarbon ring having 5 to 50 substituted or unsubstituted carbon atoms.

[0170] R 31 To R 37They may be identical or different from each other, and are each independently selected from hydrogen, deuterium, tritium, alkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups having 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups having 2 to 30 substituted or unsubstituted carbon atoms, aryl groups having 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 3 to 30 substituted or unsubstituted carbon atoms, and other groups having substituted or unsubstituted carbon atoms. Cycloalkenyl groups with 5 to 30 carbon atoms, heterocyclic alkyl groups with 2 to 30 carbon atoms (substituted or unsubstituted), heteroalkyl groups with 2 to 50 carbon atoms (substituted or unsubstituted), heteroaryl groups with 2 to 50 carbon atoms (substituted or unsubstituted), cycloalkyl groups with 7 to 30 carbon atoms (substituted or unsubstituted), cycloalkyl groups with 5 to 30 carbon atoms (substituted or unsubstituted), and heterocyclic groups with 6 to 30 carbon atoms (substituted or unsubstituted). Alkyl, aryl group with 8 to 30 condensed aliphatic hydrocarbon rings (substituted or unsubstituted), heteroaryl group with 5 to 30 condensed aliphatic hydrocarbon rings (substituted or unsubstituted), alkoxy group with 1 to 30 substituted or unsubstituted carbon atoms, aryloxy group with 6 to 30 substituted or unsubstituted carbon atoms, cycloalkoxy group with 3 to 30 substituted or unsubstituted carbon atoms, heteroaryloxy group with 2 to 30 substituted or unsubstituted carbon atoms, and so on. The following groups are included: alkylthio groups with 1 to 30 carbon atoms; arylthio groups with 6 to 30 carbon atoms (substituted or unsubstituted); cycloalkylthio groups with 3 to 30 carbon atoms (substituted or unsubstituted); heteroarylthio groups with 2 to 30 carbon atoms (substituted or unsubstituted); amino groups with 0 to 40 carbon atoms (substituted or unsubstituted); silyl groups with 0 to 40 carbon atoms (substituted or unsubstituted); germanyl groups with 0 to 40 carbon atoms (substituted or unsubstituted); thiols; hydroxyl groups; nitro groups; cyano groups; and halogen groups.

[0171] The R 31 To R 37 It can connect with the A1 to A3 rings to additionally form alicyclic or aromatic monocyclic or polycyclic compounds.

[0172] The R 32 and R 33 R 34 and R 35 and R 36 and R 37 They can connect with each other to form additional alicyclic or aromatic monocyclic or polycyclic compounds.

[0173] In the chemical formula 3, "substituted" in "substituted or unsubstituted" means substituted by one or more substituents selected from the group consisting of: deuterium, tritium, cyano, haloyl, thiol, hydroxyl, nitro, alkyl with 1 to 30 carbon atoms, haloalkyl with 1 to 30 carbon atoms, alkenyl with 2 to 24 carbon atoms, alkynyl with 2 to 24 carbon atoms, cycloalkyl with 3 to 24 carbon atoms, heteroalkyl with 1 to 24 carbon atoms, aryl with 6 to 24 carbon atoms, aralkyl with 7 to 24 carbon atoms, alkylaryl with 7 to 24 carbon atoms, heteroaryl with 2 to 24 carbon atoms, heteroaryl with 3 to 24 carbon atoms, alkylheteroaryl with 3 to 24 carbon atoms, alkoxy with 1 to 24 carbon atoms, and alkylaryl with 7 to 3 carbon atoms. The substituents include: cycloalkyl groups condensed with aromatic hydrocarbon rings (0), cycloalkyl groups condensed with aromatic heterocyclic rings (5 to 30 carbon atoms), heteroalkyl groups condensed with aromatic hydrocarbon rings (6 to 30 carbon atoms), aryl groups condensed with aliphatic hydrocarbon rings (7 to 30 carbon atoms), heteroaryl groups condensed with aliphatic hydrocarbon rings (5 to 30 carbon atoms), aryl groups condensed with aliphatic heterocyclic rings (6 to 30 carbon atoms, substituted or unsubstituted), heteroaryl groups condensed with aliphatic heterocyclic rings (5 to 30 carbon atoms, substituted or unsubstituted), amino groups (1 to 30 carbon atoms), silyl groups (1 to 30 carbon atoms), germanyl groups (1 to 30 carbon atoms), aryloxy groups (6 to 24 carbon atoms), and arylthionyl groups (6 to 24 carbon atoms), wherein one or more hydrogen atoms in the substituents can be substituted with deuterium or tritium.

[0174] In a more preferred embodiment of the present invention, A1 to A3 may be the same as or different from each other, and may be independently selected from any one of aromatic hydrocarbon rings with 6 to 18 carbon atoms (substituted or unsubstituted) and aromatic hydrocarbon rings with condensed aliphatic hydrocarbon rings (substituted or unsubstituted).

[0175] As one embodiment, the first dopant in the first light-emitting layer and the second dopant in the second light-emitting layer are both the same compound, which may include one or more polycyclic compounds represented by [Chemical Formula 3].

[0176] Furthermore, in the organic light-emitting element according to the present invention, when the first dopant or the second dopant includes one or more polycyclic compounds represented by the [Chemical Formula 3], the polycyclic compound represented by the Chemical Formula 3 may be a polycyclic compound represented by the following Chemical Formula 3-1 or Chemical Formula 3-2. Preferably, the first dopant in the first light-emitting layer and the second dopant in the second light-emitting layer may be the same or different, and may be a polycyclic compound represented by the following Chemical Formula 3-1 or Chemical Formula 3-2.

[0177]

[0178] In chemical formulas 3-1 and 3-2,

[0179] X1 is either O or S.

[0180] Y1 and Y2 are either the same or different from each other, and are independently selected from O, S, and NR. 31 CR 32 R 33 SiR 34 R 35 and GeR 36 R 37 Any one of them,

[0181] A2 and A3 may be the same as or different from each other, and each is independently selected from any one of the following: an aromatic hydrocarbon ring having 6 to 50 substituted or unsubstituted carbon atoms; an aliphatic hydrocarbon ring having 5 to 50 substituted or unsubstituted carbon atoms; an aromatic hydrocarbon ring condensed with an aliphatic hydrocarbon ring having 8 to 50 substituted or unsubstituted carbon atoms; an aromatic heterocycle having 2 to 50 substituted or unsubstituted carbon atoms; and an aromatic heterocycle condensed with an aliphatic hydrocarbon ring having 5 to 50 substituted or unsubstituted carbon atoms.

[0182] R 31 To R 38They may be identical or different from each other, and are each independently selected from hydrogen, deuterium, tritium, alkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups having 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups having 2 to 30 substituted or unsubstituted carbon atoms, aryl groups having 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 3 to 30 substituted or unsubstituted carbon atoms, and other groups having substituted or unsubstituted carbon atoms. Cycloalkenyl groups with 5 to 30 carbon atoms, heterocyclic alkyl groups with 2 to 30 carbon atoms (substituted or unsubstituted), heteroalkyl groups with 2 to 50 carbon atoms (substituted or unsubstituted), heteroaryl groups with 2 to 50 carbon atoms (substituted or unsubstituted), cycloalkyl groups with 7 to 30 carbon atoms (substituted or unsubstituted), cycloalkyl groups with 5 to 30 carbon atoms (substituted or unsubstituted), and heterocyclic groups with 6 to 30 carbon atoms (substituted or unsubstituted). Alkyl, aryl group with 8 to 30 condensed aliphatic hydrocarbon rings (substituted or unsubstituted), heteroaryl group with 5 to 30 condensed aliphatic hydrocarbon rings (substituted or unsubstituted), alkoxy group with 1 to 30 substituted or unsubstituted carbon atoms, aryloxy group with 6 to 30 substituted or unsubstituted carbon atoms, cycloalkoxy group with 3 to 30 substituted or unsubstituted carbon atoms, heteroaryloxy group with 2 to 30 substituted or unsubstituted carbon atoms, and so on. The following groups are included: alkylthio groups with 1 to 30 carbon atoms; arylthio groups with 6 to 30 carbon atoms (substituted or unsubstituted); cycloalkylthio groups with 3 to 30 carbon atoms (substituted or unsubstituted); heteroarylthio groups with 2 to 30 carbon atoms (substituted or unsubstituted); amino groups with 0 to 40 carbon atoms (substituted or unsubstituted); silyl groups with 0 to 40 carbon atoms (substituted or unsubstituted); germanyl groups with 0 to 40 carbon atoms (substituted or unsubstituted); thiols; hydroxyl groups; nitro groups; cyano groups; and halogen groups.

[0183] The R 31 To R 37 It can connect with the A2 and A3 rings to additionally form alicyclic or aromatic monocyclic or polycyclic compounds.

[0184] The R 32 and R 33 R 34 and R 35 and R 36 and R 37 They can connect with each other to form additional alicyclic or aromatic monocyclic or polycyclic compounds.

[0185] o is 4, the substituent R 38 They are the same or different.

[0186] The adjacent substituents R 38 They can connect with each other to form additional alicyclic or aromatic monocyclic or polycyclic compounds.

[0187] In Chemical Formulas 3-1 and 3-2, "substituted" in "substituted or unsubstituted" means substituted by one or more substituents selected from the group consisting of: deuterium, tritium, cyano, haloyl, thiol, hydroxyl, nitro, alkyl with 1 to 30 carbon atoms, haloalkyl with 1 to 30 carbon atoms, alkenyl with 2 to 24 carbon atoms, alkynyl with 2 to 24 carbon atoms, cycloalkyl with 3 to 24 carbon atoms, heteroalkyl with 1 to 24 carbon atoms, aryl with 6 to 24 carbon atoms, aralkyl with 7 to 24 carbon atoms, alkylaryl with 7 to 24 carbon atoms, heteroaryl with 2 to 24 carbon atoms, heteroaryl with 3 to 24 carbon atoms, alkylheteroaryl with 3 to 24 carbon atoms, alkoxy with 1 to 24 carbon atoms, carbon The substituents include cycloalkyl groups with 7 to 30 carbon atoms condensed with aromatic hydrocarbon rings, cycloalkyl groups with 5 to 30 carbon atoms condensed with aromatic heterocyclic rings, heteroalkyl groups with 6 to 30 carbon atoms condensed with aromatic hydrocarbon rings, aryl groups with 7 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic hydrocarbon rings, aryl groups with 6 to 30 carbon atoms condensed with aliphatic heterocyclic rings (substituted or unsubstituted), heteroaryl groups with 5 to 30 carbon atoms condensed with aliphatic heterocyclic rings (substituted or unsubstituted), amino groups with 1 to 30 carbon atoms, silyl groups with 1 to 30 carbon atoms, germanyl groups with 1 to 30 carbon atoms, aryloxy groups with 6 to 24 carbon atoms, and arylthionyl groups with 6 to 24 carbon atoms, wherein one or more hydrogen atoms in the substituents can be substituted with deuterium or tritium.

[0188] As an example, the compounds described below may be used as specific examples of compounds represented by the chemical formula 3, but are not limited thereto.

[0189]

[0190]

[0191]

[0192]

[0193]

[0194] Furthermore, the present invention can provide compounds represented by the above-described chemical formula 1.

[0195] Hereinafter, an organic light-emitting element according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0196] Figure 1 This is a diagram illustrating the structure of an organic light-emitting element according to an embodiment of the present invention.

[0197] As mentioned above Figure 1 As shown, the organic light-emitting element according to the present invention comprises, in sequence, an anode 20, a hole transport layer 40, a first light-emitting layer 50', a second light-emitting layer 50, an electron transport layer 60, and a cathode 80. This is equivalent to having the anode as the first electrode, the cathode as the second electrode, and including a hole transport layer between the anode and the light-emitting layer, and an electron transport layer between the light-emitting layer and the cathode.

[0198] Furthermore, according to embodiments of the present invention, the organic light-emitting element may include a hole injection layer 30 between the anode 20 and the hole transport layer 40, and may include an electron injection layer 70 between the electron transport layer 60 and the cathode 80.

[0199] Referring to the above Figure 1 The organic light-emitting element and its manufacturing method of the present invention will be described as follows.

[0200] First, an anode (positive electrode) material is coated onto the substrate 10 to form the anode 20. The substrate 10 is typically the same substrate used in organic electroluminescent (EL) devices, and preferably an organic substrate or a transparent plastic substrate with excellent transparency, surface smoothness, ease of handling, and water resistance. Furthermore, transparent and highly conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), and zinc oxide (ZnO) are used as the anode electrode material.

[0201] A hole injection layer 30 is formed by vacuum thermal deposition or spin coating of a hole injection layer material on the upper part of the anode 20 electrode. Then, a hole transport layer 40 is formed by vacuum thermal deposition or spin coating of a hole transport layer material on the upper part of the hole injection layer 30.

[0202] The hole injection layer 30 material can be used without special restrictions as long as it is a material commonly used in the art. For example, 4,4',4"-tris(2-naphthylphenyl-phenylamino)triphenylamine (2-TNATA: 4,4',4"-tris(2-naphthylphenyl-phenylamino)-triphenylamine), N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPD: N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine), and N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine (TPD: N,N'-diphenyl-N ... Examples of amines include '-bis(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine, N,N'-diphenyl-N,N'-bis-[4-(phenyl-m-tolyl-amino)-phenyl]-biphenyl-4,4'-diamine (DNTPD: N,N'-diphenyl-N,N'-bis-[4-(phenyl-m-tolyl-amino)-phenyl]-biphenyl-4,4'-diamine), and 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile (HAT-CN: 1,4,5,8,9,11-Hexaazatriphenylenehexacarbonitrile), but the present invention is not limited thereto.

[0203] Furthermore, the material of the hole transport layer 40 can be used without special restrictions as long as it is a material commonly used in the art. For example, N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1-biphenyl]-4,4'-diamine (TPD), N,N'-di(naphthyl-1-yl)-N,N'-diphenylbenzidine (a-NPD), N-[[1,1'-biphenyl]-4-yl]-9,9'-dimethyl-N-[4-(9-phenyl-9H-carbazole-3-yl)phenyl]-9H-fluorene-2-amine (BCFN), etc., but is not limited to these.

[0204] Furthermore, the present invention may additionally form an electron blocking layer on top of the hole transport layer. The electron blocking layer is a layer that improves the lifetime and efficiency of the device by preventing electrons injected from the electron injection layer from passing through the light-emitting layer into the hole transport layer, and may be formed in a suitable portion between the light-emitting layer and the hole injection layer, preferably between the light-emitting layer and the hole transport layer.

[0205] Next, the first light-emitting layer 50' and the second light-emitting layer 50 can be stacked on the upper part of the hole transport layer 40 by vacuum deposition or spin coating.

[0206] Here, in the organic light-emitting element, a compound represented by chemical formula 1 or chemical formula 2 can be used as the host material in the first light-emitting layer or the second light-emitting layer, and a compound represented by chemical formula 3 can be used as the dopant material in the first light-emitting layer or the second light-emitting layer, and the materials constituting them are as described above.

[0207] According to a specific example of the present invention, the thicknesses of the first light-emitting layer 50' and the second light-emitting layer 50 can be... to The range, preferably, can be to The range.

[0208] Alternatively, an electron transport layer 60 can be deposited on the organic light-emitting layer by vacuum deposition or spin coating.

[0209] Furthermore, in this invention, the electron transport layer 60 can be made of a known electron transport material that functions to stably transport electrons injected from the electron injection electrode (Cathode). Examples of known electron transport materials include quinoline derivatives, and in particular materials such as tris(8-hydroxyquinoline)aluminum (Alq3), Liq, TAZ, BAlq, beryllium bis(benzoquinolin-10-olate): Bebq2), compound 201, compound 202, BCP, and oxadiazole derivatives such as PBD, BMD, and BND, but are not limited thereto.

[0210]

[0211] Furthermore, after the electron transport layer is formed, an electron injection layer 70, which is a material that facilitates the injection of electrons from the cathode, can be stacked on top of the electron transport layer, and the material of the electron injection layer is not particularly limited.

[0212] The electron injection layer 70 can be formed using any known material such as CsF, NaF, LiF, Li2O, BaO, etc. While the deposition conditions for the electron injection layer vary depending on the compound used, they can generally be selected from a range of conditions almost identical to those for forming a hole injection layer.

[0213] The thickness of the electron injection layer 70 can be approximately to approximately about to approximately When the thickness of the electron injection layer meets the range described above, a satisfactory level of electron injection characteristics can be obtained without substantially increasing the driving voltage.

[0214] Furthermore, in this invention, the cathode 80 can utilize a material with a low work function to facilitate electron injection. Lithium (Li), magnesium (Mg), calcium (Ca), or their alloys such as aluminum (Al), aluminum-lithium (Al-Li), magnesium-indium (Mg-In), and magnesium-silver (Mg-Ag) can be used, or a transmission-type cathode using ITO or IZO can be used.

[0215] Furthermore, the organic light-emitting element in this invention may additionally include a light-emitting layer of blue, green, or red light-emitting material that emits light in the wavelength range of 380 nm to 800 nm. That is, the light-emitting layer in this invention consists of multiple light-emitting layers, and the blue, green, or red light-emitting material in the additionally formed light-emitting layer may be a fluorescent or phosphorescent material.

[0216] Furthermore, in this invention, one or more layers selected from the various layers can be formed by a single-molecule deposition process or a solution process.

[0217] The deposition process refers to a method of forming a thin film by evaporating a substance used as a material for forming the various layers under vacuum or low pressure conditions through heating or the like. The solution process refers to a method of forming a thin film by mixing a substance used as a material for forming the various layers with a solvent and performing methods such as inkjet printing, roll-to-roll coating, screen printing, spraying, dip coating, spin coating, etc.

[0218] Furthermore, the organic light-emitting element described in this invention can be used in any one of the following devices: flat panel display devices, flexible display devices; monochrome or white flat panel lighting devices; monochrome or colored flexible lighting devices; display devices for vehicles or aircraft; and display devices for virtual or augmented reality.

[0219] The present invention will now be described in more detail with reference to preferred embodiments. However, these embodiments are merely for illustrating the invention more specifically, and the scope of the invention is not limited thereto, as will be apparent to those skilled in the art.

[0220] (Example)

[0221] Synthetic Example 1. Synthesis of [Compound 1-1]

[0222] Synthesis Example 1-1. Synthesis of A-1

[0223]

[0224] In a round-bottom flask, add [the following] under nitrogen atmosphere. <a-1a> 50g、 <a-1b>54.22 g of tetrakis(triphenylphosphine)palladium (Pd(PPh3)4) 5.07 g of potassium carbonate (K2CO3) 80.34 g of potassium carbonate (K2CO3), 500 mL of 1,4-dioxane (1,4-dioxane), and 240 mL of water were added, and the mixture was refluxed for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain the desired product. <a-1>(59g, 84%)

[0225] Synthesis Example 1-2. Synthesis of A-2

[0226]

[0227] In a round-bottom flask, add [the following] under nitrogen atmosphere. <a-1>59 g of tetrahydrofuran (THF) and 295 mL of sodium hydroxide were added, and after cooling to -10 °C, 97.6 mL of 3M methyl magnesium bromide (MeMgBr) was slowly added dropwise, and the mixture was stirred at 50 °C for 12 hours. After the reaction was complete, 10% ammonium chloride (NH4Cl) aqueous solution and toluene were added together and extracted. The mixture was then separated by column chromatography to obtain the desired product. <a-2>(41.3g, 70%).

[0228] Synthesis of Example 1-3.A-3

[0229]

[0230] In a round-bottom flask, add [the following] under nitrogen atmosphere. <a-2>41.3 g of acetic acid and 413 mL of acetic acid were added, and 2.5 g of hydrochloric acid was added at 50 °C, followed by reflux for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain the desired product. <a-3>(42.15g, 80%).

[0231] Synthesis of Example 1-4.A-4

[0232]

[0233] In a round-bottom flask, add [the following] under nitrogen atmosphere. <a-3>42.2 g of bromine and 635 mL of dichloromethane were added, and after cooling to -10 °C, 28.4 g of bromine was slowly added dropwise, and the mixture was stirred at room temperature for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain the desired product. <a-4>(48.5g, 74%).

[0234] Synthetic Examples 1-5. Synthesis of [Compound 1-1]

[0235]

[0236] In a round-bottom flask, add [the following] under nitrogen atmosphere. <a-4> 48.5g、 <a-5a>45.3 g of tetra(triphenylphosphine)palladium (Pd(PPh3)4) 3.81 g of potassium carbonate (K2CO3) 37.9 g of potassium carbonate (K2CO3) 485 mL of 1,4-dioxane (1,4-dioxane) 113 mL of water were added and refluxed for 12 hours. After the reaction was completed, the mixture was extracted with water and separated by column chromatography to obtain [compound 1-1] (37.7 g, 64%).

[0237] MS (MALDI-TOF): m / z 536.21 [M + ]

[0238] Synthetic Example 2. Synthesis of [Compounds 1-7]

[0239] Synthesis of Example 2-1.B-1

[0240]

[0241] In addition to using <b-1a>Instead of the method used in the above synthetic example 1-1 <a-1a>,use <b-1b>replace <a-1b>In addition, it was synthesized using the same method to obtain <b-1>(Yield 79%)

[0242] Synthesis of Example 2-2.B-2

[0243]

[0244] In a round-bottom flask, add [the following] under nitrogen atmosphere. <b-1>35 g of tetrahydrofuran (THF) and 450 mL of sodium hydroxide were added, and after cooling to -78°C, 76.8 mL of 1.6 M n-butyllithium was slowly added dropwise. After stirring for 1 hour, 17.4 g of trimethyl borate was slowly added, and the mixture was stirred at room temperature for 12 hours. After adding 2N hydrochloric acid aqueous solution and stirring for 10 minutes, the mixture was extracted multiple times with water, and crystals were precipitated using heptane to obtain the desired product. <b-2>(21.76g, 70%).

[0245] Synthesis of Example 2-3.B-3

[0246]

[0247] In addition to using <b-2>Instead of the method used in the above synthetic example 1-1 <a-1b>,use <b-3a>replace <a-1a>In addition, it was synthesized using the same method to obtain <b-3>(Yield 75%)

[0248] Synthesis of Example 2-4.B-4

[0249]

[0250] In a round-bottom flask, add [the following] under nitrogen atmosphere. <b-3>24 g of dichloromethane and 240 mL of dichloromethane were added, and after cooling to 0 °C, 11 mL of boron tribromide (BBr3) was slowly added dropwise, and the mixture was stirred at room temperature for 12 hours. After the reaction was completed, the mixture was extracted multiple times with water, and then separated by column chromatography to obtain the desired product. <b-4>(22g, 87%)

[0251] Synthesis of Example 2-5.B-5

[0252]

[0253]

[0254] In a round-bottom flask, add [the following] under nitrogen atmosphere. <b-4>22 g of pyridine, 9 g of pyridine, and 250 mL of dichloromethane were added, and the mixture was cooled to -10°C. Then, 18.7 g of anhydrous trifluoromethanesulfonic acid was slowly added dropwise, and the mixture was stirred at room temperature for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain the desired product. <b-5>(25.4g, 80%).

[0255] Synthesis of Example 2-6.B-6

[0256]

[0257] In a round-bottom flask, add [the following] under nitrogen atmosphere. <b-5>22 g of palladium acetate (Pd(OAc)2), 1.26 g of palladium acetate (Pd(OAc)2), 2.15 g of 2-bicyclohexylphosphine-2',6'-dimethoxybiphenyl (Sphos), 10.25 g of potassium acetate (KOAc), and 220 mL of 1,2-dimethoxyethane were stirred at 80 °C for 12 hours. After the reaction was completed, the mixture was extracted with water and separated by column chromatography to obtain... <b-6>(13.57g, 95%).

[0258] Synthesis of Example 2-7.B-7

[0259]

[0260] In addition to using <b-6>Instead of the method used in the above synthetic examples 1-4 <a-3>In addition, it was synthesized using the same method to obtain <b-7>(Yield 61%).

[0261] Synthesis of Example 2-8.B-8

[0262]

[0263] In a round-bottom flask, add [the following] under nitrogen atmosphere. <b-7>30g of tetrahydrofuran (THF) and 300mL of sodium hydroxide were added, and after cooling to -78°C, 57.7mL of 1.6M n-butyllithium was slowly added dropwise. After stirring for 1 hour, the mixture was then rapidly added... <b-8a>18g was added and stirred at room temperature for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain the desired product. <b-8>(31.6g, 76%).

[0264] Synthesis of Example 2-9.B-9

[0265]

[0266] In addition to using <b-9b>Instead of the method used in the above synthetic example 1-1 <a-1a>,use <b-9a>replace <a-1b>In addition, it was synthesized using the same method to obtain <b-9>(Yield 79%)

[0267] Synthesis of Example 2-10.B-10

[0268]

[0269] In addition to using <b-9>Instead of the method used in the above synthetic examples 1-2 <a-1>In addition, it was synthesized using the same method to obtain <b-10>(Yield 74%)

[0270] Synthesis of Example 2-11.B-11

[0271]

[0272] In addition to using <b-10>Instead of the method used in the above synthetic examples 1-3 <a-2>In addition, it was synthesized using the same method to obtain <b-11>(Yield 73%)

[0273] Synthesis of Example 2-12.B-12

[0274]

[0275] In addition to using <b-11>Instead of the method used in the above synthetic examples 1-4 <a-3>In addition, it was synthesized using the same method to obtain <b-12>(Yield 79%)

[0276] Synthetic Examples 2-13. Synthesis of [Compounds 1-7]

[0277]

[0278] In addition to using <b-12>Instead of the method used in the above synthetic examples 2-8 <b-7>,use <b-8>replace <b-8a>In addition, [compounds 1-7] were synthesized by the same method (yield 59%).

[0279] MS (MALDI-TOF): m / z 818.30 [M + ]

[0280] Synthesis Example 3. Synthesis of [Compounds 1-15]

[0281] Synthesis Example 3-1. Synthesis of C-1

[0282]

[0283] In addition to using <c-1a>Instead of the method used in the above synthetic examples 2-5 <b-4>In addition, it was synthesized using the same method to obtain <c-1>(Yield 78%)

[0284] Synthesis Example 3-2. Synthesis of C-2

[0285]

[0286] In addition to using <c-1>Instead of the method used in the above synthetic example 1-1 <a-1a>In addition, it was synthesized using the same method to obtain <c-2>(Yield 66%)

[0287] Synthesis Example 3-3. Synthesis of C-3

[0288]

[0289] In addition to using <c-2>Instead of the method used in the above synthetic examples 1-2 <a-1>In addition, it was synthesized using the same method to obtain <c-3>(Yield 71%).

[0290] Synthesis Example 3-4. Synthesis of C-4

[0291]

[0292] In addition to using <c-3>Instead of the method used in the above synthetic examples 1-3 <a-2>In addition, it was synthesized using the same method to obtain <c-4>(Yield 69%)

[0293] Synthesis Example 3-5. Synthesis of C-5

[0294]

[0295] In addition to using <c-4>Instead of the method used in the above synthetic examples 1-4 <a-3>In addition, it was synthesized using the same method to obtain <c-5>(Yield 71%).

[0296] Synthetic Examples 3-6. Synthesis of [Compounds 1-15]

[0297]

[0298] In addition to using <c-5>Instead of the method used in the above synthetic examples 1-5 <a-4>In addition, [compounds 1-15] were synthesized using the same method (72% yield).

[0299] MS (MALDI-TOF): m / z 586.23 [M + ]

[0300] Synthesis Example 4. Synthesis of [Compounds 1-21]

[0301] Synthetic Example 4-1. Synthesis of [Compound 1-21]

[0302]

[0303] In addition to using <c-5>Instead of the method used in the above synthetic examples 1-5 <a-4>,use <d-1a>replace <a-5a>In addition, [compounds 1-21] were synthesized by the same method (77% yield).

[0304] MS (MALDI-TOF): m / z 666.22 [M + ]

[0305] Synthesis Example 5. Synthesis of [Compounds 1-24]

[0306] Synthesis Example 5-1. Synthesis of E-1

[0307]

[0308] In addition to using <e-1a>Instead of the method used in the above synthetic example 1-1 <a-1a>,use <e-1b>replace <a-1b>In addition, it was synthesized using the same method to obtain <e-1>(Yield 76%)

[0309] Synthesis Example 5-2. Synthesis of E-2

[0310]

[0311] In addition to using <e-1>Instead of the method used in the above synthetic examples 1-2 <a-1>In addition, it was synthesized using the same method to obtain <e-2>(Yield 70%)

[0312] Synthesis Example 5-3. Synthesis of E-3

[0313]

[0314] In addition to using <e-2>Instead of the method used in the above synthetic examples 1-3 <a-2>In addition, it was synthesized using the same method to obtain <e-3>(Yield 71%).

[0315] Synthesis Example 5-4. Synthesis of E-4

[0316]

[0317] In addition to using <e-3>Instead of the method used in the above synthetic examples 1-4 <a-3>In addition, it was synthesized using the same method to obtain <e-4>(Yield 66%)

[0318] Synthetic Example 5-5. Synthesis of [Compound 1-24]

[0319]

[0320] In addition to using <e-4>Instead of the method used in the above synthetic examples 1-5 <a-4>,use <e-5a>replace <a-5a>In addition, [compounds 1-24] were synthesized by the same method (75% yield).

[0321] MS (MALDI-TOF): m / z 758.32 [M + ]

[0322] Synthesis Example 6. Synthesis of [Compounds 1-27]

[0323] Synthesis Example 6-1. Synthesis of F-1

[0324]

[0325] In addition to using <e-1a>Instead of the method used in the above synthetic example 1-1 <a-1a>In addition, it was synthesized using the same method to obtain <f-1>(Yield 74%)

[0326] Synthesis Example 6-2. Synthesis of F-2

[0327]

[0328] In addition to using <f-1>Instead of the method used in the above synthetic examples 1-2 <a-1>In addition, it was synthesized using the same method to obtain <f-2>(Yield 73%)

[0329] Synthesis Example 6-3. Synthesis of F-3

[0330]

[0331] In addition to using <f-2>Instead of the method used in the above synthetic examples 1-3 <a-2>In addition, it was synthesized using the same method to obtain <f-3>(Yield 68%)

[0332] Synthesis Example 6-4. Synthesis of F-4

[0333]

[0334] In addition to using <f-3>Instead of the method used in the above synthetic examples 1-4 <a-3>In addition, it was synthesized using the same method to obtain <f-4>(Yield 66%)

[0335] Synthetic Example 6-5. Synthesis of [Compound 1-27]

[0336]

[0337] In addition to using <f-4>Instead of the method used in the above synthetic examples 1-5 <a-4>,use <f-5a>replace <a-5a>In addition, [compounds 1-27] were synthesized by the same method (73% yield).

[0338] MS (MALDI-TOF): m / z 726.26 [M] + ]

[0339] Synthetic Example 7. Synthesis of [Compounds 1-37]

[0340] Synthesis Example 7-1. Synthesis of G-1

[0341]

[0342] In addition to using <e-1a>Instead of the method used in the above synthetic example 1-1 <a-1a>,use <g-1>replace <a-1b>In addition, it was synthesized using the same method to obtain <g-1>(Yield 76%)

[0343] Synthesis Example 7-2. Synthesis of G-2

[0344]

[0345] In a round-bottom flask, add [the following] under nitrogen atmosphere. <b-3a>20.6 g of tetrahydrofuran and 206 mL of tetrahydrofuran were added, and after cooling to -78°C, 90.1 mL of 1.6 M n-butyllithium was slowly added dropwise. After stirring for 1 hour, [the remaining text appears to be incomplete and requires further context]. <g-1>18g was dissolved in 100mL of tetrahydrofuran solution and stirred at room temperature for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain... <g-2>(17.78g, 70%).

[0346] Synthesis Example 7-3. Synthesis of G-3

[0347]

[0348] In addition to using <g-2>Instead of the method used in the above synthetic examples 1-3 <a-2>In addition, it was synthesized using the same method to obtain <g-3>(Yield 76%)

[0349] Synthesis Example 7-4. Synthesis of G-4

[0350]

[0351] In addition to using <g-3>Instead of the method used in the above synthetic examples 1-4 <a-3>In addition, it was synthesized using the same method to obtain <g-4>(Yield 68%)

[0352] Synthetic Example 7-5. Synthesis of [Compound 1-37]

[0353]

[0354] In addition to using <g-4>Instead of the method used in the above synthetic examples 1-5 <a-4>In addition, [compounds 1-37] were synthesized using the same method (74% yield).

[0355] MS (MALDI-TOF): m / z 660.25 [M] + ]

[0356] Synthesis Example 8. Synthesis of [Compounds 1-38]

[0357] Synthesis Example 8-1. Synthesis of H-1

[0358]

[0359] In addition to using <h-1a>Instead of the method used in the above synthetic example 1-1 <a-1a>In addition, it was synthesized using the same method to obtain <h-1>(Yield 73%)

[0360] Synthesis Example 8-2. Synthesis of H-2

[0361]

[0362] In a round-bottom flask, add [the following] under nitrogen atmosphere. <h-1>15g of sodium hydroxide, 1.9g of sodium hydroxide, and 150mL of ethanol were added and stirred for 48 hours. After the reaction was complete, 2N hydrochloric acid aqueous solution was added dropwise to neutralize the solution, and the precipitated crystals were filtered and recrystallized using n-hexane to obtain the desired product. <h-2>(13.5g, 92%).

[0363] Synthesis Example 8-3. Synthesis of H-3

[0364]

[0365] Add to the round-bottom flask <h-2>13.5 g of methanesulfonic acid and 135 mL of sodium sulfate were added and stirred at 80 °C for 12 hours. After the reaction was complete, the mixture was extracted with water and separated by column chromatography to obtain the desired product. <h-3>(Yield 89%)

[0366] Synthesis Example 8-4. Synthesis of H-4

[0367]

[0368] In addition to using <h-3>Instead of the method used in the above synthetic example 7-2 <g-1>,use <h-4a>replace <b-3a>In addition, it was synthesized using the same method to obtain <h-4>(Yield 82%)

[0369] Synthesis Example 8-5. Synthesis of H-5

[0370]

[0371] In addition to using <h-4>Instead of the method used in the above synthetic examples 1-3 <a-2>In addition, it was synthesized using the same method to obtain <h-5>(Yield 80%)

[0372] Synthetic Example 8-6. Synthesis of [Compound 1-38]

[0373]

[0374] In addition to using <h-5>Instead of the method used in the above synthetic examples 1-5 <a-4>In addition, [compounds 1-38] were synthesized using the same method (78% yield).

[0375] MS (MALDI-TOF): m / z 532.18 [M] + ]

[0376] Examples 1 to 29: Fabrication of organic light-emitting elements including a first light-emitting layer and a second light-emitting layer

[0377] The ITO glass was patterned to achieve a luminescent area of ​​2mm × 2mm and then cleaned. After being installed in a vacuum chamber, the base pressure was set to 1 × 10⁻⁶. -7 Torr, and then used as a hole injection layer and hole transport layer on the ITO according to HAT-CN α-NPD The film is formed in the following order. Next, a first light-emitting layer and a second light-emitting layer are formed sequentially as light-emitting layers by mixing a compound represented by Chemical Formula 1 according to the present invention and a polycyclic compound selected from [BD-1] to [BD-3] (1 wt%). As the first luminescent layer, a film is formed by mixing an anthracene compound represented by [BH-1] or [BH-2] and a polycyclic compound selected from [BD-1] to [BD-3] (1 wt%). As the second light-emitting layer, [E-1] and [E-2] are then sequentially layered in a 1:1 ratio. The film acts as an electron transport layer and transmits [E-2]. Al Organic light-emitting elements are fabricated by forming a film as an electron injection layer.

[0378] The luminescence characteristics of the organic light-emitting element were measured at 0.4 mA.

[0379]

[0380]

[0381] Comparative Examples 1 to 14

[0382] For the organic light-emitting elements used in the comparative examples, the organic light-emitting elements were manufactured in the same manner, except that the compounds according to the invention used as the main components in the first and second light-emitting layers in the element structures of the above embodiments were replaced with [RH-1] to [RH-3] described below. Similarly, the luminescence characteristics of the organic light-emitting elements were measured at 0.4 mA, and the measurement results are shown in Table 1 below. Here, the structures of [RH1] to [RH3] are as follows:

[0383]

[0384] [Table 1]

[0385]

[0386]

[0387] As shown in Table 1, it can be confirmed that, compared with organic light-emitting elements using comparative example compounds according to the prior art (Comparative Examples 1 to 8), the organic light-emitting element using the compound according to the invention in the first and second light-emitting layers exhibits a high-efficiency, long-lifetime organic light-emitting element with excellent luminous efficiency and lifetime characteristics at low driving voltage.

[0388] Furthermore, it can be confirmed that, compared with organic light-emitting elements (Comparative Examples 9 to 14) in which the compound according to embodiments of the present invention is used as a single light-emitting layer with the same thickness as the sum of the thickness of the first and second light-emitting layers in the organic light-emitting element according to the present invention, the organic light-emitting element in which the compound according to embodiments of the present invention is used as a two-layer light-emitting layer exhibits superior luminous efficiency and lifetime characteristics in all numerical aspects.

[0389] Therefore, it can be inferred that for devices using the multi-layered light-emitting layer according to the present invention, excitons are formed in the first light-emitting layer, and after the excitons are transmitted to the second light-emitting layer, a triplet-triplet fusion process occurs, thus enabling efficient energy transfer and exhibiting high efficiency and long lifespan characteristics.

[0390] Conversely, it is hypothesized that for devices using a single light-emitting layer, as in the comparative example, the probability of triplet-triplet fusion decreases because all organic light emission needs to be realized in one layer. This leads to device degradation, potentially resulting in reduced efficiency and lifetime. For these reasons, it can be confirmed that, compared to a single light-emitting layer, it is easier to manufacture high-efficiency, long-life organic light-emitting devices using a first and a second light-emitting layer.

[0391] Examples 30 to 57: Fabrication of organic light-emitting elements including a first light-emitting layer and a second light-emitting layer

[0392] In the fabrication of the organic light-emitting element comprising the first and second light-emitting layers of Examples 1 to 29 described above, the organic light-emitting element was fabricated using the same method, except that the main body of at least one or all of the first and second light-emitting layers used two compounds from [BH-3] to [BH-7] described below, and the dopant of each light-emitting layer used [BD-4] described below. Here, the luminescence characteristics of the organic light-emitting element were measured at 0.4 mA, and the structures of [BH-3] to [BH-7] and [BD-4] are as follows:

[0393]

[0394] [Table 2]

[0395]

[0396]

[0397] As shown in Table 2, it can be confirmed that, in the organic light-emitting element according to the present invention, the organic light-emitting element that uses two or more different compounds as the main body in at least one of the first and second light-emitting layers exhibits characteristics of low driving voltage, excellent luminous efficiency, and excellent lifetime characteristics. < / a-4> < / a-1a>

Claims

1. An organic light emitting element characterized by comprising: Comprise: a first electrode; a second electrode facing the first electrode; a first light-emitting layer interposed between the first electrode and the second electrode, and containing a first host and a first dopant; and a second light-emitting layer containing a second host and a second dopant, wherein at least one of the first host and the second host comprises one or more compounds represented by the following [Chemical Formula 1]: [Chemical Formula 1] In the Chemical Formula 1, A1 is a substituted or unsubstituted aromatic heterocycle having 2 to 30 carbon atoms, A2 is any one selected from a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocycle having 2 to 30 carbon atoms, and a condensed aromatic hydrocarbon ring having 8 to 30 carbon atoms, substituents R1 and R2 are the same as or different from each other, and are any one selected from a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 50 carbon atoms, and a substituted or unsubstituted aryl group having a condensed aliphatic hydrocarbon ring having 8 to 30 carbon atoms, ​ The substituents Ar1and Ar2are the same as or different from each other, and are each independently any one selected from the group consisting of hydrogen, deuterium, tritium, a substituted or unsubstituted alkyl group having a carbon atom number of 1 to 30, a substituted or unsubstituted haloalkyl group having a carbon atom number of 1 to 30, a substituted or unsubstituted alkenyl group having a carbon atom number of 2 to 30, a substituted or unsubstituted alkynyl group having a carbon atom number of 2 to 30, a substituted or unsubstituted aryl group having a carbon atom number of 6 to 50, a substituted or unsubstituted cycloalkyl group having a carbon atom number of 3 to 30, a substituted or unsubstituted cycloalkenyl group having a carbon atom number of 5 to 30, a substituted or unsubstituted heterocycloalkyl group having a carbon atom number of 2 to 30, a substituted or unsubstituted heteroalkyl group having a carbon atom number of 2 to 50, a substituted or unsubstituted heteroaryl group having a carbon atom number of 2 to 50, a substituted or unsubstituted condensed aromatic hydrocarbon ring-containing cycloalkyl group having a carbon atom number of 7 to 30, a substituted or unsubstituted condensed aromatic heterocyclic ring-containing cycloalkyl group having a carbon atom number of 5 to 30, a substituted or unsubstituted condensed aromatic hydrocarbon ring-containing heterocycloalkyl group having a carbon atom number of 6 to 30, a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing aryl group having a carbon atom number of 8 to 30, a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing heteroaryl group having a carbon atom number of 5 to 30, a substituted or unsubstituted alkoxy group having a carbon atom number of 1 to 30, a substituted or unsubstituted aryloxy group having a carbon atom number of 6 to 30, a substituted or unsubstituted cycloalkyloxy group having a carbon atom number of 3 to 30, a substituted or unsubstituted heteroaryloxy group having a carbon atom number of 2 to 30, a substituted or unsubstituted alkylthio group having a carbon atom number of 1 to 30, a substituted or unsubstituted arylthio group having a carbon atom number of 6 to 30, a substituted or unsubstituted cycloalkylthio group having a carbon atom number of 3 to 30, a substituted or unsubstituted heteroarylthio group having a carbon atom number of 2 to 30, a substituted or unsubstituted amine group having a carbon atom number of 0 to 40, a substituted or unsubstituted silyl group having a carbon atom number of 0 to 40, a substituted or unsubstituted germanyl group having a carbon atom number of 0 to 40, a thiol group, a hydroxyl group, a nitro group, a cyano group, a halogen group, However, the case where both Ar1and Ar2are any one selected from the group consisting of hydrogen, deuterium, and tritium is excluded, The linking groups L1and L2are the same as or different from each other, and are each independently a single bond, or are each independently any one linking group selected from the group consisting of a substituted or unsubstituted arylene group having a carbon atom number of 6 to 24, a substituted or unsubstituted heteroarylene group having a carbon atom number of 3 to 24, and a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing arylene group having a carbon atom number of 8 to 24, In the formula 1, "substituted" in "substituted or unsubstituted" means substituted with one or more substituents selected from the group consisting of deuterium, tritium, a cyano group, a halogen group, a thiol group, a hydroxyl group, a nitro group, an alkyl group having 1 to 30 carbon atoms, a haloalkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, a cycloalkyl group having 3 to 24 carbon atoms, a heteroalkyl group having 1 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, an alkylaryl group having 7 to 24 carbon atoms, a heteroaryl group having 2 to 24 carbon atoms, a heteroaralkyl group having 3 to 24 carbon atoms, an alkylheteroaryl group having 3 to 24 carbon atoms, an alkoxy group having 1 to 24 carbon atoms, a condensed ring cycloalkyl group having an aromatic hydrocarbon ring having 7 to 30 carbon atoms, a condensed ring cycloalkyl group having an aromatic heterocyclic ring having 5 to 30 carbon atoms, a condensed ring heterocycloalkyl group having an aromatic hydrocarbon ring having 6 to 30 carbon atoms, a condensed ring aryl group having an aliphatic hydrocarbon ring having 7 to 30 carbon atoms, a condensed ring heteroaryl group having an aliphatic hydrocarbon ring having 5 to 30 carbon atoms, a condensed ring aryl group having an aliphatic heterocyclic ring having 6 to 30 carbon atoms, a condensed ring heteroaryl group having an aliphatic heterocyclic ring having 5 to 30 carbon atoms, an amine group having 1 to 30 carbon atoms, a silyl group having 1 to 30 carbon atoms, a germanyl group having 1 to 30 carbon atoms, an aryloxy group having 6 to 24 carbon atoms, and an arylsulfinyl group having 6 to 24 carbon atoms, one or more hydrogens in the substituents being capable of being replaced with deuterium or tritium.

2. The organic light emitting element according to claim 1, wherein R1 and R2 in the formula 1 are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.

3. The organic light emitting element according to claim 1, wherein A1 in the formula 1 is any one selected from the group consisting of a benzofuran ring substituted with deuterium or unsubstituted, a dibenzofuran ring substituted with deuterium or unsubstituted, a benzothiophene ring substituted with deuterium or unsubstituted, and a dibenzothiophene ring substituted with deuterium or unsubstituted.

4. The organic light emitting element according to claim 1, wherein A2 in the formula 1 is any one selected from the group consisting of an aromatic hydrocarbon ring having 6 to 18 carbon atoms substituted with deuterium or unsubstituted, and an aromatic heterocyclic ring having 2 to 18 carbon atoms substituted with deuterium or unsubstituted.

5. The organic light emitting element according to claim 1, wherein Ar1 and Ar2 in the formula 1 are the same as or different from each other, and are each independently any one selected from the group consisting of a substituted or unsubstituted aryl group having 6 to 18 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 18 carbon atoms, a substituted or unsubstituted condensed ring aryl group having an aliphatic hydrocarbon ring having 8 to 20 carbon atoms, a substituted or unsubstituted silyl group having 1 to 30 carbon atoms, and a substituted or unsubstituted germanyl group having 1 to 30 carbon atoms. ​ ​ ​ ​ 6. The organic light emitting element according to claim 1, wherein the compound represented by the above [Chemical Formula 1] is one selected from the group consisting of the following compounds 1-1 to 1-51:

7. The organic light emitting element according to claim 1, wherein one of the first host and the second host includes one or more compounds represented by the above [Chemical Formula 1], and the other includes one or more anthracene compounds represented by the following [Chemical Formula 2]: [Chemical Formula 2] in the above [Chemical Formula 2], Substituent R 11 to R 18 each other or different, and are each independently any one selected from the group consisting of hydrogen, deuterium, tritium, a substituted or unsubstituted alkyl group having a carbon atom number of 1 to 30, a substituted or unsubstituted haloalkyl group having a carbon atom number of 1 to 30, a substituted or unsubstituted alkenyl group having a carbon atom number of 2 to 30, a substituted or unsubstituted alkynyl group having a carbon atom number of 2 to 30, a substituted or unsubstituted aryl group having a carbon atom number of 6 to 50, a substituted or unsubstituted cycloalkyl group having a carbon atom number of 3 to 30, a substituted or unsubstituted cycloalkenyl group having a carbon atom number of 5 to 30, a substituted or unsubstituted heterocycloalkyl group having a carbon atom number of 2 to 30, a substituted or unsubstituted heteroalkyl group having a carbon atom number of 2 to 50, a substituted or unsubstituted heteroaryl group having a carbon atom number of 2 to 50, a substituted or unsubstituted condensed aromatic hydrocarbon ring-containing cycloalkyl group having a carbon atom number of 7 to 30, a substituted or unsubstituted condensed aromatic hetero ring-containing cycloalkyl group having a carbon atom number of 5 to 30, a substituted or unsubstituted condensed aromatic hydrocarbon ring-containing heterocycloalkyl group having a carbon atom number of 6 to 30, a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing aryl group having a carbon atom number of 8 to 30, a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing heteroaryl group having a carbon atom number of 5 to 30, a substituted or unsubstituted alkoxy group having a carbon atom number of 1 to 30, a substituted or unsubstituted aryloxy group having a carbon atom number of 6 to 30, a substituted or unsubstituted cycloalkyloxy group having a carbon atom number of 3 to 30, a substituted or unsubstituted heteroaryloxy group having a carbon atom number of 2 to 30, a substituted or unsubstituted alkylthio group having a carbon atom number of 1 to 30, a substituted or unsubstituted arylthio group having a carbon atom number of 6 to 30, a substituted or unsubstituted cycloalkylthio group having a carbon atom number of 3 to 30, a substituted or unsubstituted heteroarylthio group having a carbon atom number of 2 to 30, a substituted or unsubstituted amine group having a carbon atom number of 0 to 40, a substituted or unsubstituted silyl group having a carbon atom number of 0 to 40, a substituted or unsubstituted germanyl group having a carbon atom number of 0 to 40, a thiol group, a hydroxyl group, a nitro group, a cyano group, and a halogen group, Linking group L 11 and L 12 are the same as or different from each other, and are each independently a single bond, or are each independently any one linking group selected from a substituted or unsubstituted arylene group having 6 to 24 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 24 carbon atoms, and a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing arylene group having 8 to 24 carbon atoms, Ar 11 and Ar 12 are the same as or different from each other, and are each independently any one selected from the group consisting of a substituted or unsubstituted aryl group having a carbon atom number of 6 to 30, a substituted or unsubstituted heteroaryl group having a carbon atom number of 3 to 30, a substituted or unsubstituted cycloalkyl group having a carbon atom number of 3 to 30, a substituted or unsubstituted heterocycloalkyl group having a carbon atom number of 2 to 30, and a substituted or unsubstituted condensed aromatic ring aliphatic hydrocarbon ring having a carbon atom number of 8 to 24, in the above [Chemical Formula 2], a position of hydrogen bonded to a carbon atom can be substituted with 0 to 60 deuterium or tritium, in the above [Chemical Formula 2], "substituted" in "substituted or unsubstituted" means substituted with one or more substituents selected from the group consisting of deuterium, tritium, a cyano group, a halogen group, a thiol group, a hydroxyl group, a nitro group, an alkyl group with a carbon atom number of 1 to 30, a halogenated alkyl group with a carbon atom number of 1 to 30, an alkenyl group with a carbon atom number of 2 to 24, an alkynyl group with a carbon atom number of 2 to 24, a cycloalkyl group with a carbon atom number of 3 to 24, a heteroalkyl group with a carbon atom number of 1 to 24, an aryl group with a carbon atom number of 6 to 24, an aralkyl group with a carbon atom number of 7 to 24, an alkylaryl group with a carbon atom number of 7 to 24, a heteroaryl group with a carbon atom number of 2 to 24, a heteroaralkyl group with a carbon atom number of 3 to 24, an alkylheteroaryl group with a carbon atom number of 3 to 24, an alkoxy group with a carbon atom number of 1 to 24, a condensed ring cycloalkyl group with an aromatic hydrocarbon ring with a carbon atom number of 7 to 30, a condensed ring cycloalkyl group with an aromatic heterocyclic ring with a carbon atom number of 5 to 30, a condensed ring heterocycloalkyl group with an aromatic hydrocarbon ring with a carbon atom number of 6 to 30, a condensed ring aryl group with an aliphatic hydrocarbon ring with a carbon atom number of 7 to 30, a condensed ring heteroaryl group with an aliphatic hydrocarbon ring with a carbon atom number of 5 to 30, a condensed ring aryl group with an aliphatic heterocyclic ring with a carbon atom number of 6 to 30, a condensed ring heteroaryl group with an aliphatic heterocyclic ring with a carbon atom number of 5 to 30, an amine group with a carbon atom number of 1 to 30, a silyl group with a carbon atom number of 1 to 30, a germanium group with a carbon atom number of 1 to 30, an aryloxy group with a carbon atom number of 6 to 24, and an arylsulfinyl group with a carbon atom number of 6 to 24, one or more hydrogens in the substituents can be substituted with deuterium or tritium.

8. The organic light emitting element according to claim 7, wherein In the anthracene compound represented by the above formula 2, the Ar 12 is a substituent represented by the following structural formula 12: [Structural Formula 12] in the above [Structural Formula 12], x is O or S, R 21 to R 24 one of R 12 is a single bond to L In addition to the L mentioned above 12 R other than the connected single key 21 To R 28 They may be identical or different from each other, and are independently selected from hydrogen, deuterium, tritium, alkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, haloalkyl groups having 1 to 30 substituted or unsubstituted carbon atoms, alkenyl groups having 2 to 30 substituted or unsubstituted carbon atoms, alkynyl groups having 2 to 30 substituted or unsubstituted carbon atoms, aryl groups having 6 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 3 to 30 substituted or unsubstituted carbon atoms, cycloalkenyl groups having 5 to 30 substituted or unsubstituted carbon atoms, heterocycloalkyl groups having 2 to 30 substituted or unsubstituted carbon atoms, heteroalkyl groups having 2 to 50 substituted or unsubstituted carbon atoms, heteroaryl groups having 2 to 50 substituted or unsubstituted carbon atoms, cycloalkyl groups having 7 to 30 substituted or unsubstituted carbon atoms, and cycloalkyl groups with a condensed aromatic hydrocarbon ring. The following are possible groupings: cycloalkyl group with 5 to 30 substituted or unsubstituted carbon atoms, cycloalkyl group with 6 to 30 substituted or unsubstituted carbon atoms, aryl group with 8 to 30 substituted or unsubstituted carbon atoms, heteroaryl group with 5 to 30 substituted or unsubstituted carbon atoms, oxy group with 1 to 30 substituted or unsubstituted carbon atoms, thiooxy group with 1 to 30 substituted or unsubstituted carbon atoms, thionyl group with 1 to 30 substituted or unsubstituted carbon atoms, amino group with 0 to 40 substituted or unsubstituted carbon atoms, silyl group with 0 to 40 substituted or unsubstituted carbon atoms, germanyl group with 0 to 40 substituted or unsubstituted carbon atoms, thiol group, hydroxyl group, nitro group, cyano group, and halogen group. In the structural formula 12, "substituted" in "substituted or unsubstituted" means substituted with one or more substituents selected from the group consisting of deuterium, tritium, a cyano group, a halogen group, a thiol group, a hydroxyl group, a nitro group, an alkyl group having a carbon atom number of 1 to 30, a haloalkyl group having a carbon atom number of 1 to 30, an alkenyl group having a carbon atom number of 2 to 24, an alkynyl group having a carbon atom number of 2 to 24, a cycloalkyl group having a carbon atom number of 3 to 24, a heteroalkyl group having a carbon atom number of 1 to 24, an aryl group having a carbon atom number of 6 to 24, an aralkyl group having a carbon atom number of 7 to 24, an alkylaryl group having a carbon atom number of 7 to 24, a heteroaryl group having a carbon atom number of 2 to 24, a heteroaralkyl group having a carbon atom number of 3 to 24, an alkylheteroaryl group having a carbon atom number of 3 to 24, a condensed ring cycloalkyl group having an aromatic hydrocarbon ring having a carbon atom number of 7 to 30, a condensed ring cycloalkyl group having an aromatic heterocyclic ring having a carbon atom number of 5 to 30, a condensed ring heterocycloalkyl group having an aromatic hydrocarbon ring having a carbon atom number of 6 to 30, a condensed ring aryl group having an aliphatic hydrocarbon ring having a carbon atom number of 7 to 30, a condensed ring heteroaryl group having an aliphatic hydrocarbon ring having a carbon atom number of 5 to 30, a condensed ring aryl group having an aliphatic heterocyclic ring having a carbon atom number of 6 to 30, a condensed ring heteroaryl group having an aliphatic heterocyclic ring having a carbon atom number of 5 to 30, an amine group having a carbon atom number of 1 to 30, a silyl group having a carbon atom number of 1 to 30, a germanyl group having a carbon atom number of 1 to 30, an oxy group having a carbon atom number of 1 to 30, a thioxy group having a carbon atom number of 1 to 30, and a sulfinyl group having a carbon atom number of 1 to 30, one or more hydrogens in the substituents being capable of being substituted with deuterium or tritium.

9. The organic light emitting element according to claim 7, wherein the compound represented by the chemical formula 2 includes one or more deuteriums.

10. The organic light emitting element according to claim 7, wherein in the organic light emitting element, one of the first host and the second host includes two or more anthracene compounds represented by the chemical formula 2 that are different from each other.

11. The organic light emitting element according to claim 10, wherein In one or more of the anthracene compounds represented by the chemical formula 2, the Ar 12 is a substituted or unsubstituted aryl group having a carbon number of 6 to 30, and in one or more of the anthracene compounds represented by Chemical Formula 2 additionally included, the Ar 12 is a substituted or unsubstituted heteroaryl group having a carbon number of 2 to 30.

12. The organic light emitting element according to claim 11, wherein Among the anthracene compounds represented by Chemical Formula 2 additionally included, the Ar 12 is a substituent represented by Structural Formula 12, the structural formula 12 is the same as that defined in claim 8.

13. The organic light emitting element according to claim 7, wherein in the organic light emitting element, the first light emitting layer includes, as the first host, a compound represented by the chemical formula 1 and a host compound different from the compound represented by the chemical formula 1 at a ratio of 1:9 to 9:

1.

14. The organic light emitting element according to claim 10, wherein in the organic light emitting element, the second light emitting layer includes, as the second host, two anthracene compounds represented by the chemical formula 2 that are different from each other at a ratio of 1:9 to 9:

1.

15. A compound represented by the following chemical formula 1: [Chemical Formula 1] in the chemical formula 1, A1 is a substituted or unsubstituted aromatic heterocyclic ring having a carbon atom number of 2 to 30, ​ A2is any one selected from the group consisting of a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 carbon atoms, a substituted or unsubstituted aromatic heterocyclic ring having 2 to 30 carbon atoms, and a condensed aromatic hydrocarbon ring of a substituted or unsubstituted aliphatic hydrocarbon ring having 8 to 30 carbon atoms, the substituents R1and R2are the same as or different from each other, and are any one selected from the group consisting of a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 50 carbon atoms, and a condensed aromatic hydrocarbon ring of a substituted or unsubstituted aliphatic hydrocarbon ring having 8 to 30 carbon atoms, the substituents Ar1and Ar2are the same as or different from each other, and are independently any one selected from the group consisting of hydrogen, deuterium, tritium, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted cycloalkenyl group having 5 to 30 carbon atoms, a substituted or unsubstituted heterocycloalkyl group having 2 to 30 carbon atoms, a substituted or unsubstituted heteroalkyl group having 2 to 50 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 50 carbon atoms, a condensed aromatic hydrocarbon ring of a substituted or unsubstituted cycloalkyl group having 7 to 30 carbon atoms, a condensed aromatic heterocyclic ring of a substituted or unsubstituted cycloalkyl group having 5 to 30 carbon atoms, a condensed aromatic hydrocarbon ring of a substituted or unsubstituted heterocycloalkyl group having 6 to 30 carbon atoms, a condensed aromatic hydrocarbon ring of a substituted or unsubstituted aliphatic hydrocarbon ring having 8 to 30 carbon atoms, a condensed aliphatic hydrocarbon ring of a substituted or unsubstituted heteroaryl group having 5 to 30 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted cycloalkoxy group having 3 to 30 carbon atoms, a substituted or unsubstituted heteroaryloxy group having 2 to 30 carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, a substituted or unsubstituted arylthio group having 6 to 30 carbon atoms, a substituted or unsubstituted cycloalkylthio group having 3 to 30 carbon atoms, a substituted or unsubstituted heteroarylthio group having 2 to 30 carbon atoms, a substituted or unsubstituted amine group having 0 to 40 carbon atoms, a substituted or unsubstituted silyl group having 0 to 40 carbon atoms, a substituted or unsubstituted germanyl group having 0 to 40 carbon atoms, a thiol group, a hydroxyl group, a nitro group, a cyano group, a halogen group, However, the case where both Ar1and Ar2are any one selected from the group consisting of hydrogen, deuterium, and tritium is excluded, The linking groups L1and L2are the same as or different from each other, and are each independently a single bond, or are each independently any one linking group selected from a substituted or unsubstituted arylene group having 6 to 24 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 24 carbon atoms, and a substituted or unsubstituted condensed aliphatic hydrocarbon ring-containing arylene group having 8 to 24 carbon atoms, In the Chemical Formula 1, "substituted" in "substituted or unsubstituted" means substituted with one or more substituents selected from the group consisting of deuterium, tritium, a cyano group, a halogen group, a thiol group, a hydroxyl group, a nitro group, an alkyl group having 1 to 30 carbon atoms, a haloalkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 24 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, a cycloalkyl group having 3 to 24 carbon atoms, a heteroalkyl group having 1 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, an alkylaryl group having 7 to 24 carbon atoms, a heteroaryl group having 2 to 24 carbon atoms, a heteroaralkyl group having 3 to 24 carbon atoms, an alkylheteroaryl group having 3 to 24 carbon atoms, an alkoxy group having 1 to 24 carbon atoms, a condensed aromatic hydrocarbon ring-containing cycloalkyl group having 7 to 30 carbon atoms, a condensed aromatic heterocyclic ring-containing cycloalkyl group having 5 to 30 carbon atoms, a condensed aromatic hydrocarbon ring-containing heterocycloalkyl group having 6 to 30 carbon atoms, a condensed aliphatic hydrocarbon ring-containing aryl group having 7 to 30 carbon atoms, a condensed aliphatic hydrocarbon ring-containing heteroaryl group having 5 to 30 carbon atoms, a condensed aliphatic heterocyclic ring-containing aryl group having 6 to 30 carbon atoms, a condensed aliphatic heterocyclic ring-containing heteroaryl group having 5 to 30 carbon atoms, an amine group having 1 to 30 carbon atoms, a silyl group having 1 to 30 carbon atoms, a germanyl group having 1 to 30 carbon atoms, an aryloxy group having 6 to 24 carbon atoms, and an arylsulfinyl group having 6 to 24 carbon atoms, one or more hydrogens in the substituents being capable of being replaced with deuterium or tritium.

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