Light-emitting device and electronic apparatus including the same

Abstract

A first electrode; a second electrode facing the first electrode; and A light-emitting element and an electronic device including the same are disclosed, comprising: an intermediate layer disposed between the first electrode and the second electrode and including a light-emitting layer; wherein the first electrode comprises an inorganic material, the inorganic material comprises a metal oxide having one or more metals selected from the group including W, Mo, Ga, Ni, Cu, Zn, and Ti as a main component, the intermediate layer comprises a hole transport region disposed between the first electrode and the light-emitting layer, the hole transport region comprises a hole transport layer, and the hole transport layer comprises one or more condensed ring compounds represented by the following chemical formula 1: Refer to the description of the above chemical formula 1 as described in this specification.

Description

Technology Field

[0001] This relates to a light-emitting element and an electronic device including the same. Background Technology

[0002] Among light-emitting devices, self-emissive devices not only have a wide viewing angle and excellent contrast, but also fast response time and excellent characteristics in brightness, driving voltage, and response speed.

[0003] The light-emitting device may have a structure in which a first electrode is disposed on a substrate, and a hole transport region, a light-emitting layer, an electron transport region, and a second electrode are sequentially disposed on the first electrode. Holes injected from the first electrode move to the light-emitting layer via the hole transport region, and electrons injected from the second electrode move to the light-emitting layer via the electron transport region. Carriers such as holes and electrons recombine in the light-emitting layer region to generate excitons. Light is generated as the excitons change from an excited state to a ground state. The problem to be solved

[0004] The purpose is to provide a light-emitting device having high device stability, low progressive driving voltage, high efficiency, and long lifespan. means of solving the problem

[0005] According to one embodiment,

[0006] First electrode;

[0007] A second electrode facing the first electrode; and

[0008] An intermediate layer disposed between the first electrode and the second electrode and including a light-emitting layer; comprising

[0009] The first electrode comprises a metal oxide having one or more metals selected from the group including W, Mo, Ga, Ni, Cu, Zn, and Ti as a main component, and

[0010] The above intermediate layer includes a hole transport region disposed between the first electrode and the light-emitting layer, and

[0011] The above hole transport region includes a hole transport layer, and

[0012] The above-described hole transport layer comprises one or more condensed ring compounds represented by the following chemical formula 1, thereby providing a light-emitting device:

[0013] <Chemical Formula 1>

[0014]

[0015] Among the above chemical formula 1,

[0016] CY1 to CY3 independently of each other C5-C 60 Carbocyclic group or C1-C 60 It is a heterocyclic group, and

[0017] X1 is C(R4)(R5), N(R4), O or S, and

[0018] X2 is C(R6)(R7), N(R6), O or S, and

[0019] Y1 is N, B, P or P(=O), and

[0020] L1 to L3 are independently of each other, a single bond, at least one R 10a C5-C substituted or unsubstituted 60 Carbocyclic group or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, and

[0021] a1 to a3 are independently one of integers 1 to 5, and

[0022] Ar1 to Ar3 are independently at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, and

[0023] b1 to b3 are independently one of integers 1 to 12, and

[0024] n1 to n3 are independently one of integers 0 to 5,

[0025] The sum of n1 to n3 is 1 or more, and

[0026] R1 to R7 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R 10a C1-C substituted or unsubstituted 60 alkyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkenyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkynyl group, at least one R 10a C1-C substituted or unsubstituted 60 Alkoxy group, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, at least one R 10a C1-C substituted or unsubstituted 60 Heterocyclic group, at least one R 10a C6-C substituted or unsubstituted 60 aryloxy group, at least one R 10a C6-C substituted or unsubstituted 60 Arylthio group, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2); and,

[0027] d1 to d3 are independently one of integers 1 to 12, and

[0028] The above R 10a Is,

[0029] Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group;

[0030] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ), or substituted or unsubstituted with any combination thereof, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, or C1-C 60 Alkoxygenation;

[0031] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, C1-C 60 Alkoxy group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ), or substituted or unsubstituted with any combination thereof, C3-C60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, or C6-C 60 Arylthiogi; or

[0032] -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), or -P(=O)(Q 31 )(Q 32 ); and,

[0033] The above Q1 to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 They are independently hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 Alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy group; or deuterium, -F, cyano group, C1-C 60 Alkyl group, C1-C 60 C3-C, substituted or unsubstituted with an alkoxy group, or any combination thereof 60 Carbocyclic group or C1-C 60 It is a heterocyclic group.

[0034] According to another aspect, an electronic device including the light-emitting element described above is provided. Effects of the invention

[0035] The light-emitting device described above can have improved device stability, low progressive driving voltage, high efficiency, and a long lifespan by introducing a first electrode comprising an inorganic material described below and a hole transport layer comprising a condensed ring compound represented by Chemical Formula 1. Brief explanation of the drawing

[0036] FIG. 1 is a schematic cross-sectional view of a light-emitting element according to one embodiment. FIG. 2 is a schematic cross-sectional view of an electronic device according to one embodiment. FIG. 3 is a schematic cross-sectional view of an electronic device according to one embodiment. FIG. 4 is a graph showing the change in driving voltage (△V) over time (hr) for light-emitting elements of Examples 1 to 5 and Comparative Examples 1 to 5 of the present invention under conditions of room temperature and 420 nit brightness. Specific details for implementing the invention

[0037] The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms.

[0038] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0039] In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component.

[0040] In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0041] In the following embodiments, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added.

[0042] In the following embodiments, when a part such as a film, region, or component is described as being on or above another part, it includes not only cases where it is directly on top of another part, but also cases where another film, region, or component is interposed in between.

[0043] In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is illustrated.

[0044] In this specification, "intermediate layer" is a term referring to a single and / or multiple layers disposed between the first electrode and the second electrode of the light-emitting element.

[0045] In the present specification, the phrase “(the intermediate layer and / or capping layer) comprises a compound represented by Formula 1” may be interpreted as “(the intermediate layer and / or capping layer) may comprise one compound belonging to the category of Formula 1 or two or more different compounds belonging to the category of Formula 1.”

[0046] In the present invention, the HOMO energy levels and work functions of the material may be described below, but are not limited thereto.

[0047] The HOMO energy levels of the material are measured using cyclic voltammetry, and the cyclic voltammetry device is the ZIVE SP2 model available from Wonatech. The respective sample solutions and electrolytic solutions used herein are as follows, with ferrocene used as the reference material and (Bu)4NPF6 used as the electrolyte:

[0048] Sample solution of the compound to be measured: 5 x 10 -3 M dichloromethane solution

[0049] Ferrocene sample solution: 5 x 10 -3 M dichloromethane solution

[0050] (Bu)4NPF6 Electrolyte Solution: 0.1 M Acetonitrile Solution

[0051] E of the compound to be measured and the reference substance we -I. Draw a conventional graph, draw tangent lines at points where the current increases rapidly on the graph, and record the voltage at the point where the tangent lines intersect the x-axis. Set the HOMO energy level of ferrocene to -4.8 eV, and calculate the HOMO energy level of the material to be measured.

[0052] Meanwhile, a 50 nm thin film was formed by spin-coating the material onto an ITO substrate, followed by heat treatment at 200 °C for 5 minutes in air on a hot plate, and the work function was evaluated. The equipment used for the evaluation was UPS (Ultraviolet Photoelectron Spectroscopy).

[0053] [Explanation of Fig. 1]

[0054] FIG. 1 schematically illustrates a cross-sectional view of a light-emitting element (10) according to one embodiment of the present invention. The light-emitting element (10) includes a first electrode (110), an intermediate layer (130), and a second electrode (150).

[0055] Hereinafter, the structure and manufacturing method of a light-emitting element (10) according to one embodiment of the present invention are described as follows with reference to FIG. 1.

[0056] [First electrode (110)]

[0057] A substrate may be additionally disposed on the lower part of the first electrode (110) of FIG. 1 or on the upper part of the second electrode (150). As the substrate, a glass substrate or a plastic substrate may be used. Alternatively, the substrate may be a flexible substrate and may include a plastic with excellent heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphtalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0058] The first electrode (110) can be formed, for example, by providing a material for the first electrode on the substrate using a deposition method or a sputtering method. When the first electrode (110) is an anode, a material with a high work function that facilitates hole injection can be used as the material for the first electrode.

[0059] The first electrode (110) may be a reflective electrode, a semi-transparent electrode, or a transparent electrode.

[0060] The first electrode (110) may include an inorganic material. The inorganic material may include a metal oxide having one or more metals selected from the group including W, Mo, Ga, Ni, Cu, Zn, and Ti as the main component.

[0061] For example, the above-mentioned inorganic material may include a metal oxide having one or more metals selected from the group including W, Mo, Ga, Ni, and Cu as the main component.

[0062] According to one embodiment, the inorganic material is WO x , MoO x , GaO x , NiO y , CuO y , or may include any combination thereof (where x is a real number satisfying 2.5 ≤ x ≤ 3.0, and y is a real number satisfying 0.5 ≤ y ≤ 2.0).

[0063] By including the inorganic material in the first electrode (110), the absolute value of the work function of the first electrode (110) can be increased. For example, compared to the case where only a conductive oxide is included as the material of the first electrode (110), the absolute value of the work function can be increased when the inorganic material is additionally included.

[0064] In the case of ITO, which is a material used as the anode of conventional light-emitting devices, the absolute value of the work function is about 4.8 eV, and since the work function is not deep, the difference in energy levels between the anode and the cathode is not large, so the hole transport layer material to improve hole injection characteristics and device stability is limited, which has a problem of reduced luminous efficiency and lifespan of the light-emitting device.

[0065] A light-emitting device (10) according to one embodiment can improve hole injection efficiency and device stability by increasing the absolute value of the work function of the first electrode (110) by applying the inorganic material to the first electrode (110).

[0066] According to one embodiment, the absolute value of the work function of the first electrode (110) may be 5.3 eV or more.

[0067] According to one embodiment, the first electrode (110) may have a multilayer structure including a plurality of layers.

[0068] For example, the first electrode (110) may have a structure of three or more layers.

[0069] According to one embodiment, the first electrode (110) may include a first layer comprising a first material, a second layer comprising a second material, and a third layer comprising the inorganic material.

[0070] The above third layer may be placed between the first layer and the above intermediate layer.

[0071] The second layer can be placed between the first layer and the third layer.

[0072] For example, a second floor may be placed on the first floor, a third floor on the second floor, and an intermediate floor on the third floor. That is, they may be arranged in the order of first floor - second floor - third floor - intermediate floor.

[0073] The first material and the second material may be different from each other.

[0074] The above second material and the above inorganic material may be different from each other.

[0075] According to one embodiment, the first layer and the second layer can be in direct contact.

[0076] According to one embodiment, the second layer and the third layer can be in direct contact.

[0077] According to one embodiment, the third layer and the intermediate layer can be in direct contact.

[0078] According to one embodiment, the first material and the inorganic material may be different from each other.

[0079] According to one embodiment, the first material may include a conductive oxide material.

[0080] According to one embodiment, the first electrode (110) of the light-emitting element (10) includes a first layer comprising the conductive oxide material, thereby serving to prevent contact between the second layer comprising the second material and the glass. Through this, the issue of reduced reflectivity due to clumping caused by contact between the second material, which includes a metal material or a metal alloy material, and the glass can be prevented, and thus the efficiency of the light-emitting element can be improved. In addition, since the first material is conductive, electron transfer through contact with the source drain in the panel structure of the light-emitting element may also be possible.

[0081] For example, the first material may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof.

[0082] According to one embodiment, the first layer may consist of the first material.

[0083] According to one embodiment, the second material may include a metal material or a metal alloy material.

[0084] According to one embodiment, the first electrode (110) of the light-emitting element (10) includes a second layer comprising the metal material or metal alloy material, so that when light emitted from the light-emitting layer reaches the anode, it is reflected as is, thereby improving the optical characteristics of the light-emitting element through a superposition effect with other lights.

[0085] For example, the second material may include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), AlNiLa, AlNd, AlNiGeLa, AlCoGeLa, or any combination thereof.

[0086] Here, "AlNiLa" means an aluminum-nickel-lanthanum alloy, for example, the nickel content may be 1 atomic% to 3 atomic% and the lanthanum content may be 0.1 atomic% to 0.5 atomic%.

[0087] Here, "AlNd" refers to an aluminum-neodymium alloy, and, for example, the neodymium content may be 1 atomic% to 3 atomic%.

[0088] Here, "AlNiGeLa" means an aluminum-nickel-germanium-lanthanum alloy, for example, the nickel content may be 1 atomic% to 3 atomic%, the germanium content may be 1 atomic% to 3 atomic%, and the lanthanum content may be 0.01 atomic% to 0.2 atomic%.

[0089] Here, "AlCoGeLa" means an aluminum-cobalt-germanium-lanthanum alloy, for example, the cobalt content may be 1 atomic% to 3 atomic%, the germanium content may be 1 atomic% to 3 atomic%, and the lanthanum content may be 0.01 atomic% to 0.2 atomic%.

[0090] According to one embodiment, the second layer may consist of the second material.

[0091] According to one embodiment, the third layer may consist of the inorganic material.

[0092] [Middle layer (130)]

[0093] An intermediate layer (130) is disposed on the upper portion of the first electrode (110). The intermediate layer (130) includes a light-emitting layer.

[0094] The above intermediate layer (130) may further include a hole transport region disposed between the first electrode (110) and the light-emitting layer and an electron transport region disposed between the light-emitting layer and the second electrode (150).

[0095] The above intermediate layer (130) may further include, in addition to various organic materials, metal-containing compounds such as organometallic compounds, inorganic materials such as quantum dots, etc.

[0096] Meanwhile, the intermediate layer (130) may include i) two or more emitting units sequentially stacked between the first electrode (110) and the second electrode (150), and ii) a charge generation layer disposed between the two emitting units. When the intermediate layer (130) includes the emitting units and charge generation layer as described above, the emitting element (10) may be a tandem emitting element.

[0097] [Middle layer (130) with a fixed transport area]

[0098] The above hole transport region may include a hole transport layer.

[0099] The hole transport region may have i) a monolayer structure consisting of a single layer made of a single material, ii) a monolayer structure consisting of a single layer containing multiple different materials, or iii) a multilayer structure including multiple layers containing multiple different materials.

[0100] The hole transport region may further include a hole injection layer, a light-emitting auxiliary layer, an electron blocking layer, or any combination thereof.

[0101] For example, the hole transport region may have a single-layer structure of a hole transport layer; or a multi-layer structure of a hole transport layer / luminescent auxiliary layer and a hole transport layer / electron blocking layer stacked sequentially from the first electrode (110).

[0102] [Precision Transport Layer]

[0103] The hole transport layer above may include one or more condensed ring compounds represented by the following chemical formula 1:

[0104] <Chemical Formula 1>

[0105]

[0106] Among the above chemical formula 1,

[0107] CY1 to CY3 independently of each other C5-C 60 Carbocyclic group or C1-C 60 It can be a heterocyclic group.

[0108] According to one embodiment, the CY1 to CY3 are independently of each other, a benzene group, a naphthalene group, anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a chrysene group, a cyclopentadiene group, a 1,2,3,4-tetrahydronaphthalene (1,2,3,4-tetrahydronaphthalene) group, a thiophene group, a furan group, an indole group, a benzoborol group, a benzophosphol group, an indene group, a benzocilol group, a benzozermol group, a benzothiophen group, a benzoselenopene group, a benzofuran group, a carbazole group, a dibenzoborol group, a dibenzophospol group, a fluorene group, a dibenzocilol group, a dibenzozermol group, a dibenzothiophen group, a dibenzoselenopene group, a dibenzofuran group, a dibenzothiophen 5-oxide group, 9H-fluorene-9-one group, dibenzothiophene 5,5-dioxide group, azaindole group, azabenzovorol group, azabenzophospol group, azaindene group, azabenzicillol group, azabenzozermol group, azabenzothiophene group, azabenzoselenopene group, azabenzofuran group, azacarbazole group, azadibenzovorol group, azadibenzophospol group, azafluorene group, azadibenzicillol group, azadibenzozermol group, azadibenzothiophene group, azadibenzoselenopene group, azadibenzofuran group, azadibenzothiophene 5-oxide group, aza-9H-fluorene-9-one group, azadibenzothiophene 5,5-dioxide group, indolocarbazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazolin group, phenanthroline group, pyrrole group, pyrazole group, imidazole group, triazole group, oxazole group, isooxazole group, thiazole group, isothiaazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzothiaazole group, benzoxadiazole group, benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group or 5,6,7,It may be the 8-tetrahydroquinoline (5,6,7,8-tetrahydroquinoline) group.

[0109] X1 can be C(R4)(R5), N(R4), O, or S.

[0110] X2 can be C(R6)(R7), N(R6), O, or S.

[0111] For example, X1 is O and X2 can be O.

[0112] Y1 can be N, B, P, or P(=O).

[0113] For example, Y1 can be N.

[0114] L1 to L3 are independently of each other, a single bond, at least one R 10a C5-C substituted or unsubstituted 60 Carbocyclic group or at least one R 10a C1-C substituted or unsubstituted 60 It can be a heterocyclic group.

[0115] According to one embodiment, L1 to L3 may be independently single bonds; or groups represented by one of the following chemical formulas 10-1 to 10-40.

[0116]

[0117]

[0118]

[0119]

[0120] Among the above chemical formulas 10-1 to 10-40,

[0121] Y 11 is O or S,

[0122] Y 12 is O, S, N(Z 13 ) or C(Z 13 )(Z 14 ) and,

[0123] Z 11 To Z 14 They are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazino group, hydrazono group, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl group, C1-C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, spiro-fluorene-benzoflurenyl group, benzoflurenyl group, dibenzoflurenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyridinyl group, pyrimidinyl group, pyrazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, naphthiridinyl group, quinoxalinyl group, quinazolinyl group, phenanthridinyl group, acrridinyl group, phenanthrolinyl group, phenazinyl group, carbazole group, dibenzofuranyl group, Dibenzothiophenyl group, dibenzosilol group, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ) or -B(Q 31 )(Q 32 It can be.

[0124] e4 can be one of integers from 1 to 4, and

[0125] e6 can be one of integers from 1 to 6, and

[0126] e7 can be one of integers from 1 to 7, and

[0127] e8 can be one of integers from 1 to 8, and

[0128] Above Q 31 to Q 33 are independently of each other, C1-C 10 Alkyl group, C1-C 10 It may be an alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group, and

[0129] * and *' are bonding sites with neighboring atoms.

[0130] a1 to a3 may be one of integers 1 to 5 independently of each other.

[0131] Ar1 to Ar3 are independently at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group or at least one R 10a C1-C substituted or unsubstituted 60 It can be a heterocyclic group.

[0132] According to one embodiment, Ar1 to Ar3 are independently of each other, at least one R 10aSubstituted or unsubstituted, benzene group, naphthalene group, anthracene group, phenanthrene group, triphenylene group, pyrene group, chrysene group, cyclopentadiene group, 9,9'-spirobifluorene group, spiro[cyclohexane-1,9'-fluorene] group, 1,2,3,4-tetrahydronaphthalene group, thiophene group, furan group, indole group, benzoborol group, benzophospol group, indene group, benzoscilol group, benzozermol group, benzothiophene group, benzoselenophene group, benzofuran group, carbazole group, dibenzoborol group, dibenzophospol group, fluorene group, dibenzocilol group, Dibenzozermol group, dibenzothiophen group, dibenzoselenopene group, dibenzofuran group, dibenzothiophene 5-oxide group, 9H-fluoren-9-one group, dibenzothiophene 5,5-dioxide group, azaindole group, azabenzoborol group, azabenzophospol group, azaindene group, azabenzicillol group, azabenzozermol group, azabenzothiophene group, azabenzoselenopene group, azabenzofuran group, azacarbazole group, azadibenzoborol group, azadibenzophospol group, azafluoren group, azadibenzicillol group, azadibenzozermol group, azadibenzothiophene group, azadibenzoselenopene group, azadibenzofuran group, azadibenzothiophene 5-oxide group, Aza-9H-fluoren-9-one group, azadibenzothiophen 5,5-dioxide group, indolocarbazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazolin group, phenanthroline group, pyrrole group, pyrazol group, imidazole group, triazole group, oxazole group, isooxazole group, thiazole group, isothiaazole group, oxadiazole group, thiadiazole group, benzopyrazol group, benzimidazole group, benzoxazole group, benzothiaazole group, benzoxadiazole group,It may be a benzothiadiazole group, a 5,6,7,8-tetrahydroisoquinoline group, or a 5,6,7,8-tetrahydroquinoline group, and

[0133] The above R 10a For a description of..., refer to the description within this specification.

[0134] According to another embodiment, Ar1 to Ar3 may independently be one of the following chemical formulas 2-1 to 2-36:

[0135]

[0136]

[0137]

[0138]

[0139] Among the above chemical formulas 2-1 to 2-36,

[0140] Y 21 It can be O, S, N(Z5), C(Z5)(Z6) or Si(Z5)(Z6), and

[0141] Z1 to Z6 may independently refer to the description of R1 in this specification, and

[0142] e2 is 1 or 2, and

[0143] e3 can be one of integers from 1 to 3, and

[0144] e4 can be one of integers from 1 to 4, and

[0145] e5 can be one of integers from 1 to 5, and

[0146] e6 can be one of integers from 1 to 6, and

[0147] e7 can be one of integers from 1 to 7, and

[0148] e9 can be one of integers from 1 to 9, and

[0149] e10 can be one of integers from 1 to 10, and

[0150] * is a bonding site with a neighboring atom.

[0151] According to one embodiment, Z1 to Z6 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazino group, hydrazono group, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl group, C1-C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, spiro-fluorene-benzoflurenyl group, benzoflurenyl group, dibenzoflurenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyridinyl group, pyrimidinyl group, pyrazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, naphthiridinyl group, quinoxalinyl group, quinazolinyl group, phenanthridinyl group, acrridinyl group, phenanthrolinyl group, phenazinyl group, carbazole group, dibenzofuranyl group, Dibenzothiophenyl group, dibenzosilol group, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ) or -B(Q 31 )(Q 32 It could be,

[0152] Above Q 31 to Q 33 are independently of each other, C1-C 10 Alkyl group, C1-C 10 It may be an alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group.

[0153] b1 to b3 can be independently one of integers 1 to 12,

[0154] n1 to n3 can be one of integers 0 to 5 independently of each other, and

[0155] The sum of n1 to n3 may be 1 or more.

[0156] For example, the above n1 is 1, n2 is 0, and n3 is 0, or;

[0157] The above n1 is 0, n2 is 1, and n3 is 0 or;

[0158] The above n1 is 0, n2 is 0, and n3 is 1, or;

[0159] The above n1 is 1, n2 is 1, and n3 is 0 or;

[0160] The above n1 is 1, n2 is 0, and n3 is 1 or;

[0161] The above n1 is 0, n2 is 1, and n3 is 1; or

[0162] The above n1 can be 1, n2 can be 1, and n3 can be 1.

[0163] R1 to R7 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R 10a C1-C substituted or unsubstituted 60 alkyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkenyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkynyl group, at least one R 10a C1-C substituted or unsubstituted 60 Alkoxy group, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, at least one R 10a C1-C substituted or unsubstituted 60 Heterocyclic group, at least one R 10a C6-C substituted or unsubstituted60 aryloxy group, at least one R 10a C6-C substituted or unsubstituted 60 It can be an arylthio group, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2).

[0164] d1 to d3 can be any one of integers 1 to 12 independently of each other.

[0165] R within this specification 10a Is,

[0166] Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group;

[0167] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ), or substituted or unsubstituted with any combination thereof, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, or C1-C 60 Alkoxygenation;

[0168] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60alkynyl group, C1-C 60 Alkoxy group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ), or substituted or unsubstituted with any combination thereof, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, or C6-C 60 Arylthiogi; or

[0169] -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), or -P(=O)(Q 31 )(Q 32 It could be,

[0170] The above Q1 to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 They are independently hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 Alkenyl group; C2-C 60 alkynyl group; C1-C60 Alkoxy group; or deuterium, -F, cyano group, C1-C 60 Alkyl group, C1-C 60 C3-C, substituted or unsubstituted with an alkoxy group, or any combination thereof 60 Carbocyclic group or C1-C 60 It can be a heterocyclic group.

[0171] According to one embodiment, the condensed ring compound represented by Chemical Formula 1 may be represented by one of the following Chemical Formulas 1-1 to 1-5:

[0172]

[0173] Among the above chemical formulas 1-1 to 1-5,

[0174] For descriptions of X1, X2, Y1, L1 to L3, a1 to a3 and Ar1 to Ar3, refer to the descriptions within this specification, and

[0175] R 11 to R 13 For descriptions of each, refer to the description of R1 within this specification, and

[0176] R 21 to R 24 For descriptions of each, refer to the description of R2 within this specification, and

[0177] R 31 to R 34 For a description of each, refer to the description of R3 within this specification.

[0178] According to one embodiment, the condensed ring compound represented by Chemical Formula 1 may be one of the following compounds 1 to 140, but is not limited thereto:

[0179]

[0180]

[0181]

[0182]

[0183]

[0184]

[0185]

[0186]

[0187]

[0188] .

[0189] The hole transport layer of the light-emitting element (10) according to one embodiment may include a condensed ring compound represented by the chemical formula 1 described above.

[0190] The condensed ring compound represented by Chemical Formula 1 above can have the effect of making the molecule rigid in terms of molecular bond energy (BDE) by including at least one cyclic group as a substituent in a plate-like structure having a condensed ring, and can have a high glass transition temperature (Tg) or melting point. Accordingly, a light-emitting device having a hole transport layer containing the condensed ring compound can have high stability.

[0191] A light-emitting device (10) according to one embodiment may have a low progressive driving voltage (△V) by including the first electrode (110) and the hole transport layer, respectively, an inorganic material and a condensed ring compound as described above. For example, the condensed ring compound included in the hole transport layer may contain heteroatoms such as nitrogen and oxygen, and the free electrons of the heteroatoms may stabilize the inorganic material in the electron defect state included in the first electrode (110), thereby increasing the interfacial stability between the first electrode and the hole transport layer. Through this, the light-emitting device (10) may have a low progressive driving voltage, high efficiency, and a long lifespan.

[0192] According to one embodiment, the hole transport layer can be in direct contact with the first electrode (110).

[0193] According to one embodiment, the hole transport layer can be in direct contact with the third layer of the first electrode (110).

[0194] According to one embodiment, the hole transport layer can be in direct contact with the light-emitting layer.

[0195] According to one embodiment, the hole transport layer may be composed of a condensed ring compound represented by the chemical formula 1.

[0196] According to one embodiment, the hole transport layer may not include a p-dopant.

[0197] A light-emitting element (10) according to one embodiment can suppress the generation of leakage current in the lateral direction caused by the p-dopant, etc. by not including a p-dopant in the hole transport layer. Furthermore, it can prevent color mixing phenomena caused by the generation of leakage current.

[0198] According to one embodiment, the absolute value of the HOMO energy level of the hole transport layer may be 5.25 eV or higher.

[0199] [Emitting layer among the intermediate layer (130)]

[0200] When the light-emitting element (10) is a full-color light-emitting element, the light-emitting layer may be patterned into a red light-emitting layer, a green light-emitting layer, and / or a blue light-emitting layer for each individual subpixel. Alternatively, the light-emitting layer may have a structure in which two or more layers among the red light-emitting layer, the green light-emitting layer, and the blue light-emitting layer are stacked in contact or spaced apart, or may have a structure in which two or more materials among the red light-emitting material, the green light-emitting material, and the blue light-emitting material are mixed without layer separation, thereby emitting white light.

[0201] The light-emitting layer may include a host and a dopant. The dopant may include a phosphorescent dopant, a fluorescent dopant, or any combination thereof.

[0202] The content of the dopant in the above-mentioned light-emitting layer may be about 0.01 to about 15 parts by weight per 100 parts by weight of the host.

[0203] Alternatively, the light-emitting layer may include quantum dots.

[0204] Meanwhile, the light-emitting layer may include a delayed fluorescent material. The delayed fluorescent material may act as a host or dopant in the light-emitting layer.

[0205] The thickness of the light-emitting layer may be about 100 Å to about 1000 Å, for example, about 200 Å to about 600 Å. When the thickness of the light-emitting layer satisfies the range described above, excellent light-emitting characteristics can be exhibited without a substantial increase in driving voltage.

[0206] [Host]

[0207] The above host may include a compound represented by the following chemical formula 301:

[0208] <Chemical Formula 301>

[0209] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21

[0210] Among the above chemical formula 301,

[0211] Ar 301 and L 301 are independent of each other, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, and

[0212] xb11 is 1, 2, or 3, and

[0213] xb1 is one of integers from 0 to 5, and

[0214] R301 Silver, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R 10a C1-C substituted or unsubstituted 60 alkyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkenyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkynyl group, at least one R 10a C1-C substituted or unsubstituted 60 Alkoxy group, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, at least one R 10a C1-C substituted or unsubstituted 60 Heterocyclic group, -Si(Q 301 )(Q 302 )(Q 303 ), -N(Q 301 )(Q 302 ), -B(Q 301 )(Q 302 ), -C(=O)(Q 301 ), -S(=O)2(Q 301 ), or -P(=O)(Q 301 )(Q 302 ) and,

[0215] xb21 is one of integers from 1 to 5, and

[0216] Q 301 to Q 303 For a description of each, refer to the description of Q1 in this specification.

[0217] For example, if xb11 in the above chemical formula 301 is 2 or more, then 2 or more Ar 301 They can be connected to each other through a single bond.

[0218] As another example, the host may include a compound represented by the following chemical formula 301-1, a compound represented by the following chemical formula 301-2, or any combination thereof:

[0219] <Chemical Formula 301-1>

[0220]

[0221] <Chemical Formula 301-2>

[0222]

[0223] Among the above chemical formulas 301-1 to 301-2,

[0224] Ring A 301 inner ring A 304 are independent of each other, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, and

[0225] X 301 is O, S, N-[(L 304 ) xb4 -R 304 ], C(R 304 )(R 305 ), or Si(R 304 )(R 305 ) and,

[0226] xb22 and xb23 are independently 0, 1, or 2, and

[0227] L 301 , xb1 and R 301 For descriptions thereof, refer to those described in this specification, and

[0228] L 302 to L 304 The descriptions regarding are independent of each other, the above L 301 Refer to the explanation for,

[0229] The descriptions for xb2 to xb4 are independent of each other, and refer to the description for xb1 above, and

[0230] R 302 to R 305 and R 311 to R 314The explanation for each of the above R 301 Refer to the explanation for.

[0231] As another example, the host may include an alkaline earth metal complex, a post-transition metal complex, or any combination thereof. For example, the host may include a Be complex (e.g., compound H55 below), an Mg complex, a Zn complex, or any combination thereof.

[0232] As another example, the host may comprise one of the following compounds H1 to H124, ADN (9,10-Di(2-naphthyl)anthracene), MADN (2-Methyl-9,10-bis(naphthalen-2-yl)anthracene), TBADN (9,10-di-(2-naphthyl)-2-t-butyl-anthracene), CBP (4,4′-bis(N-carbazolyl)-1,1′-biphenyl), mCP (1,3-di-9-carbazolylbenzene), TCP (1,3,5-tri(carbazol-9-yl)benzene), or any combination thereof:

[0233]

[0234]

[0235]

[0236]

[0237]

[0238]

[0239]

[0240]

[0241]

[0242]

[0243]

[0244]

[0245]

[0246]

[0247] [Phosphorescent Dopant]

[0248] The above phosphorescent dopant may include at least one transition metal as a central metal.

[0249] The phosphorescent dopant may include a monodenate ligand, a two-bed ligand, a three-bed ligand, a four-bed ligand, a five-bed ligand, a six-bed ligand, or any combination thereof.

[0250] The above phosphorescent dopant may be electrically neutral.

[0251] For example, the phosphorescent dopant may include an organometallic compound represented by the following chemical formula 401:

[0252] <Chemical Formula 401>

[0253] M(L 401 ) xc1 (L 402 ) xc2

[0254] <Chemical Formula 402>

[0255]

[0256] Among the above chemical formulas 401 and 402,

[0257] M is a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)), and

[0258] L 401 is a ligand represented by the above chemical formula 402, xc1 is 1, 2, or 3, and if xc1 is 2 or more, 2 or more L 401 They are identical or different from each other,

[0259] L 402 is an organic ligand, xc2 is 0, 1, 2, 3, or 4, and if xc2 is 2 or more, 2 or more L 402 are identical or different from each other,

[0260] X 401 and X 402 are independently nitrogen or carbon, and

[0261] Ring A 401 and ring A 402 are independently of each other, C3-C 60 Carbocyclic group, or C1-C 60 It is a heterocyclic group, and

[0262] T 401 is a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q 411 )-*', *-C(Q 411 )(Q 412 )-*', *-C(Q 411 )=C(Q 412 )-*', *-C(Q 411 )=*' or *=C(Q 411 )=*' and,

[0263] X 403 and X 404 are independently of each other, chemical bonds (e.g., covalent bonds or coordinate bonds), O, S, N(Q 413 ), B(Q 413 ), P(Q 413 ), C(Q 413 )(Q 414 ) or Si(Q 413 )(Q 414 ) and,

[0264] Above Q 411 to Q 414 For descriptions regarding each, refer to the description of Q1 in this specification, and

[0265] R 401 and R 402are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R 10a C1-C substituted or unsubstituted 20 alkyl group, at least one R 10a C1-C substituted or unsubstituted 20 Alkoxy group, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, at least one R 10a C1-C substituted or unsubstituted 60 Heterocyclic group, -Si(Q 401 )(Q 402 )(Q 403 ), -N(Q 401 )(Q 402 ), -B(Q 401 )(Q 402 ), -C(=O)(Q 401 ), -S(=O)2(Q 401 ), or -P(=O)(Q 401 )(Q 402 ) and,

[0266] Above Q 401 to Q 403 For descriptions regarding each, refer to the description of Q1 in this specification, and

[0267] xc11 and xc12 are independently one of integers from 0 to 10, and

[0268] In the above chemical formula 402, * and *' are each binding sites with M in the above chemical formula 401.

[0269] For example, i) X in the above chemical formula 402 401 is nitrogen, and X 402 is carbon, or ii) X 401 and X 402 All of it can be nitrogen.

[0270] As another example, if xc1 in the above chemical formula 402 is 2 or more, then 2 or more L 401 Two of the rings A401 is optionally, the connector T 402 Connected to each other through, or 2 rings A 402 is optionally, the connector T 403 They can be connected to each other through (see compounds PD1 to PD4 and PD7 below). The above T 402 and T 403 The descriptions for each of T in this specification 401 Refer to the explanation for.

[0271] L in the above chemical formula 401 402 can be any organic ligand. For example, the above L 402 It may include a halogen group, a diketone group (e.g., acetylacetonate group), a carboxylic acid group (e.g., picolinate group), -C (=O), an isonitrile group, a -CN group, a phosphorus group (e.g., phosphine group, phosphite group, etc.), or any combination thereof.

[0272] The above phosphorescent dopant may include, for example, one of the following compounds PD1 to PD25, or any combination thereof:

[0273]

[0274]

[0275]

[0276] [Fluorescent Dopant]

[0277] The fluorescent dopant may include an amine group-containing compound, a styryl group-containing compound, or any combination thereof.

[0278] For example, the fluorescent dopant may include a compound represented by the following chemical formula 501:

[0279] <Chemical Formula 501>

[0280]

[0281] Among the above chemical formula 501,

[0282] Ar 501 , L 501 to L 503 , R 501 and R 502 are independent of each other, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, and

[0283] xd1 to xd3 are independently 0, 1, 2, or 3, and

[0284] xd4 can be 1, 2, 3, 4, 5, or 6.

[0285] For example, Ar in the above chemical formula 501 501 It may include a condensed ring group in which three or more monocyclic groups are condensed together (e.g., anthracene group, chrysene group, pyrene group, etc.).

[0286] As another example, xd4 in the above chemical formula 501 can be 2.

[0287] For example, the fluorescent dopant may include one of the following compounds FD1 to FD36, DPVBi, DPAVBi, or any combination thereof:

[0288]

[0289]

[0290]

[0291]

[0292]

[0293]

[0294]

[0295] [Delayed Fluorescence]

[0296] The above-mentioned light-emitting layer may include a delayed fluorescent material.

[0297] In this specification, the delayed fluorescent material may be selected from any compound capable of emitting delayed fluorescence by a delayed fluorescence emission mechanism.

[0298] The delay fluorescent material included in the above-mentioned light-emitting layer can act as a host or a dopant depending on the type of other material included in the above-mentioned light-emitting layer.

[0299] According to one embodiment, the difference between the triplet energy level (eV) of the delay fluorescent material and the singlet energy level (eV) of the delay fluorescent material may be 0 eV or more and 0.5 eV or less. By satisfying the range described above, the reverse energy transfer (up-conversion) from the triplet state to the singlet state of the delay fluorescent material is effectively achieved, thereby improving the luminous efficiency of the light-emitting device (10).

[0300] For example, the above-mentioned delay fluorescent material comprises: i) at least one electron donor (e.g., a π-electron-excess C3-C such as a carbazole group). 60 cyclic group (π electron-rich C3-C 60 cyclic group) etc.) and at least one electron acceptor (e.g., sulfoxide group, cyano group, π electron-deficient nitrogenous C1-C 60 cyclic group (π electron-deficient nitrogen-containing C1-C 60 ii) a substance containing a cyclic group, etc., and ii) a C8-C containing two or more cyclic groups condensed while sharing boron (B). 60 It may include materials including polycyclic groups.

[0301] Examples of the above-mentioned delayed fluorescent materials may include at least one of the following compounds DF1 to DF9:

[0302]

[0303]

[0304] [Quantum Dot]

[0305] The above-mentioned light-emitting layer may include quantum dots.

[0306] In this specification, a quantum dot refers to a crystal of a semiconductor compound and may include any material capable of emitting light of various emission wavelengths depending on the size of the crystal.

[0307] The diameter of the above quantum dots may be, for example, about 1 nm to 10 nm.

[0308] The above quantum dots can be synthesized by a wet chemical process, an organometallic chemical vapor deposition process, a molecular beam epitaxy process, or a similar process.

[0309] The above wet chemical process is a method of growing quantum dot particle crystals after mixing an organic solvent and a precursor material. When the crystals grow, the organic solvent naturally acts as a dispersant coordinated to the surface of the quantum dot crystals and controls the growth of the crystals. Therefore, the growth of quantum dot particles can be controlled through a process that is easier and lower cost than vapor deposition methods such as Metal Organic Chemical Vapor Deposition (MOCVD) or Molecular Beam Epitaxy (MBE).

[0310] The above quantum dots may include a group II-VI semiconductor compound; a group III-V semiconductor compound; a group III-VI semiconductor compound; a group I-III-VI semiconductor compound; a group IV-VI semiconductor compound; a group IV element or compound; or any combination thereof.

[0311] Examples of the above-mentioned group II-VI semiconductor compounds include binary compounds such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, etc.; ternary compounds such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, etc.; It may include four-element compounds such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, etc.; or any combination thereof.

[0312] Examples of the above III-V semiconductor compounds may include binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, etc.; ternary compounds such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, InPSb, GaAlNP, etc.; quaternary compounds such as GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, etc.; or any combination thereof. Meanwhile, the above III-V semiconductor compounds may further include a group II element. Examples of III-V semiconductor compounds containing additional group II elements may include InZnP, InGaZnP, InAlZnP, etc.

[0313] Examples of the above-mentioned group III-VI semiconductor compounds include binary compounds such as GaS, GaSe, Ga2Se3, GaTe, InS, InSe, In2S3, In2Se3, InTe, etc.; InGaS 3 It may include ternary compounds such as InGaSe3, etc.; or any combination thereof.

[0314] Examples of the above-mentioned group I-III-VI semiconductor compounds may include ternary compounds such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2, AgAlO2, etc.; or any combination thereof.

[0315] Examples of the above-mentioned group IV-VI semiconductor compounds may include binary compounds such as SnS, SnSe, SnTe, PbS, PbSe, PbTe, etc.; ternary compounds such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, etc.; quaternary compounds such as SnPbSSe, SnPbSeTe, SnPbSTe, etc.; or any combination thereof.

[0316] The above Group IV elements or compounds may include single-element compounds such as Si, Ge, etc.; dual-element compounds such as SiC, SiGe, etc.; or any combination thereof.

[0317] Each element included in the multi-element compounds, such as the above-mentioned binary compounds, ternary compounds, and quaternary compounds, may exist within the particle at a uniform or non-uniform concentration.

[0318] Meanwhile, the above quantum dot may have a single structure in which the concentration of each element contained in the quantum dot is uniform, or a core-shell dual structure. For example, the material contained in the core and the material contained in the shell may be different from each other.

[0319] The shell of the quantum dot can serve as a protective layer to maintain semiconductor properties by preventing chemical degradation of the core, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell may be a single layer or a multilayer. The interface between the core and the shell may have a concentration gradient in which the concentration of elements present in the shell decreases toward the center.

[0320] Examples of the shell of the above quantum dot include oxides of metals, metalloids, or nonmetals, semiconductor compounds, or combinations thereof. Examples of the oxides of metals, metalloids, or nonmetals may include binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, NiO, etc.; ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, CoMn2O4, etc.; or any combination thereof. Examples of the above semiconductor compounds may include group II-VI semiconductor compounds; group III-V semiconductor compounds; group III-VI semiconductor compounds; group I-III-VI semiconductor compounds; group IV-VI semiconductor compounds; or any combination thereof, as described in this specification. For example, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0321] Quantum dots can have a full width of half maximum (FWHM) of the emission wavelength spectrum of about 45 nm or less, specifically about 40 nm or less, and more specifically about 30 nm or less, and color purity or color reproducibility can be improved in this range. In addition, since the light emitted through these quantum dots is emitted in all directions, the wide viewing angle can be improved.

[0322] In addition, the shape of the quantum dots can specifically be spherical, pyramidal, multi-arm, or cubic nanoparticles, nanotubes, nanowires, nanofibers, nanoplate-like particles, etc.

[0323] By controlling the size of the quantum dots, the energy band gap can be controlled, allowing light of various wavelengths to be obtained from the quantum dot light-emitting layer. Therefore, by using quantum dots of different sizes, a light-emitting device that emits light of various wavelengths can be realized. Specifically, the size of the quantum dots can be selected to emit red, green, and / or blue light. Additionally, the size of the quantum dots can be configured to emit white light by combining light of various colors.

[0324] [Electronic transport region in the middle layer (130)]

[0325] The electron transport region may have i) a single-layer structure consisting of a single layer made of a single material, ii) a single-layer structure consisting of a plurality of different materials, or iii) a multilayer structure including a plurality of layers containing a plurality of different materials.

[0326] The above electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0327] For example, the electron transport region may have a structure such as an electron transport layer / electron injection layer, a hole blocking layer / electron transport layer / electron injection layer, an electron control layer / electron transport layer / electron injection layer, or a buffer layer / electron transport layer / electron injection layer stacked sequentially from the light-emitting layer.

[0328] The electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer among the electron transport regions) comprises at least one π electron-deficient nitrogen-containing C1-C 60 cyclic group (π electron-deficient nitrogen-containing C1-C 60 It may include metal-free compounds containing a cyclic group.

[0329] For example, the electron transport region may include a compound represented by the following chemical formula 601.

[0330] <Chemical Formula 601>

[0331] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21

[0332] Among the above chemical formula 601,

[0333] Ar 601 , and L 601 are independent of each other, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, and

[0334] xe11 is 1, 2, or 3, and

[0335] xe1 is 0, 1, 2, 3, 4, or 5, and

[0336] R 601 is, at least one R10a C3-C substituted or unsubstituted 60 Carbocyclic group, at least one R 10a C1-C substituted or unsubstituted 60 Heterocyclic group, -Si(Q 601 )(Q 602 )(Q 603 ), -C(=O)(Q 601 ), -S(=O)2(Q 601 ), or -P(=O)(Q 601 )(Q 602 ) and,

[0337] Above Q 601 to Q 603 For descriptions regarding each, refer to the description of Q1 in this specification, and

[0338] xe21 is 1, 2, 3, 4, or 5, and

[0339] The above Ar 601 , L 601 and R 601 At least one of them is independent of each other, at least one R 10a π electron-deficient nitrogenous C1-C substituted or unsubstituted 60 It could be a click group.

[0340] For example, if xe11 in the above chemical formula 601 is 2 or more, then 2 or more Ar 601 They can be connected to each other through a single bond.

[0341] As another example, Ar in the above chemical formula 601 601 It may be a substituted or unsubstituted anthracene group.

[0342] As another example, the electron transport region may include a compound represented by the following chemical formula 601-1:

[0343] <Chemical Formula 601-1>

[0344]

[0345] In the above chemical formula 601-1,

[0346] X 614 is N or C(R 614 ) and, X 615 is N or C(R 615 ) and, X 616 is N or C(R 616 ) and, X 614 To X 616 At least one of them is N, and

[0347] L 611 to L 613 The explanation for each of the above L 601 Refer to the explanation for,

[0348] For descriptions of xe611 to xe613, refer to the description of xe1 above, and

[0349] R 611 to R 613 The explanation for each of the above R 601 Refer to the explanation for,

[0350] R 614 to R 616 They are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 20 Alkyl group, C1-C 20 Alkoxy group, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, or at least one R 10a C1-C substituted or unsubstituted 60 It can be a heterocyclic group.

[0351] For example, xe1 and xe611 to xe613 in the above chemical formulas 601 and 601-1 may be 0, 1, or 2 independently of each other.

[0352] The electron transport region above is one of the following compounds ET1 to ET45, BCP(2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline), Bphen(4,7-Diphenyl-1,10-phenanthroline), Alq3, BAlq, TAZ, NTAZ, TSPO1(Diphenyl[4-(triphenylsilyl)phenyl]phosphine oxide), TPBI(2,2′,2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1- H It may include -benzimidazole) or any combination thereof:

[0353]

[0354]

[0355]

[0356]

[0357]

[0358]

[0359]

[0360] The thickness of the electron transport region may be about 160 Å to about 5000 Å, for example, about 100 Å to about 4000 Å. If the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, the hole blocking layer, or the electron control layer may be independently about 20 Å to about 1000 Å, for example, about 30 Å to about 300 Å, and the thickness of the electron transport layer may be about 100 Å to about 1000 Å, for example, about 150 Å to about 500 Å. When the thickness of the buffer layer, the hole blocking layer, the electron control layer, the electron transport layer, and / or the electron transport layer satisfies the ranges described above, satisfactory electron transport characteristics can be obtained without a substantial increase in driving voltage.

[0361] The above electron transport region (e.g., the electron transport layer among the electron transport regions) may further include a metal-containing material in addition to the material described above.

[0362] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The metal ions of the alkali metal complex may be Li ions, Na ions, K ions, Rb ions, or Cs ions, and the metal ions of the alkaline earth metal complex may be Be ions, Mg ions, Ca ions, Sr ions, or Ba ions. The ligands coordinated to the metal ions of the alkali metal complex and the alkaline earth metal complex may independently include hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0363] For example, the metal-containing material may include a Li complex. The Li complex may include, for example, the following compounds ET-D1 (LiQ) or ET-D2:

[0364]

[0365] The above electron transport region may include an electron injection layer that facilitates electron injection from the second electrode (150). The electron injection layer may be in direct contact with the second electrode (150).

[0366] The electron injection layer may have i) a single-layer structure consisting of a single layer made of a single material, ii) a single-layer structure consisting of a plurality of different materials, or iii) a multilayer structure having a plurality of layers containing a plurality of different materials.

[0367] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0368] The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metal may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metal may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0369] The alkali metal-containing compound, alkaline earth metal-containing compound and the rare earth metal-containing compound may include oxides, halides (e.g., fluorides, chlorides, bromides, iodides, etc.), tellurides, or any combination thereof of the alkali metal, alkaline earth metal, and rare earth metal, respectively.

[0370] The above alkali metal-containing compound may include alkali metal oxides such as Li2O, Cs2O, K2O, etc., alkali metal halides such as LiF, NaF, CsF, KF, LiI, NaI, CsI, KI, etc., or any combination thereof. The above alkaline earth metal-containing compound may include BaO, SrO, CaO, Ba x Sr 1-x O(x is 0 <x<1를 만족하는 실수임), Ba x Ca 1-x O(x is 0 <x<1를 만족하는 실수임) 등과 같은 알칼리 토금속 화합물을 포함할 수 있다. 상기 희토류 금속-함유 화합물은, YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, 또는 이의 임의의 조함을 포함할 수 있다. 또는, 상기 희토류 금속-함유 화합물은, 란타나이드 금속 텔루라이드를 포함할 수 있다. 상기 란타나이드 금속 텔루라이드의 예는, LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La2Te3, Ce2Te3, Pr2Te3, Nd2Te3, Pm2Te3, Sm2Te3, Eu2Te3, Gd2Te3, Tb2Te3, Dy2Te3, Ho2Te3, Er2Te3, Tm2Te3, Yb2Te3, Lu2Te3등을 포함할 수 있다.

[0371] The above alkali metal complex, alkaline earth metal complex, and rare earth metal complex may comprise i) one of the ions of the alkali metal, alkaline earth metal, and rare earth metal as described above, and ii) a ligand bound to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0372] The electron injection layer described above may consist only of alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof, or may further include organic materials (e.g., compounds represented by the chemical formula 601).

[0373] According to one embodiment, the electron injection layer may be composed of i) an alkali metal-containing compound (e.g., an alkali metal halide), or ii) a) an alkali metal-containing compound (e.g., an alkali metal halide); and b) an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof. For example, the electron injection layer may be a KI:Yb co-deposited layer, an RbI:Yb co-deposited layer, etc.

[0374] If the electron injection layer further comprises an organic material, the alkali metal, alkaline earth metal, rare earth metal, alkali metal-containing compound, alkaline earth metal-containing compound, rare earth metal-containing compound, alkali metal complex, alkaline earth metal complex, rare earth metal complex, or any combination thereof may be uniformly or non-uniformly dispersed in a matrix containing the organic material.

[0375] The thickness of the electron injection layer may be about 1 Å to about 100 Å or about 3 Å to about 90 Å. When the thickness of the electron injection layer satisfies the range described above, satisfactory electron injection characteristics can be obtained without a substantial increase in driving voltage.

[0376] [Second electrode (150)]

[0377] A second electrode (150) is disposed on the upper portion of the intermediate layer (130) as described above. The second electrode (150) may be a cathode, which is an electron injection electrode. In this case, a metal, alloy, electrically conductive compound, or any combination thereof having a low work function may be used as the material for the second electrode (150).

[0378] The second electrode (150) may include lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, or any combination thereof. The second electrode (150) may be a transmissive electrode, a semitransmissive electrode, or a reflective electrode.

[0379] The second electrode (150) may have a single-layer structure or a multi-layer structure having multiple layers.

[0380] [Capping layer]

[0381] A first capping layer may be disposed on the outer side of the first electrode (110), and / or a second capping layer may be disposed on the outer side of the second electrode (150). Specifically, the light-emitting element (10) may have a structure in which the first capping layer, the first electrode (110), the intermediate layer (130), and the second electrode (150) are stacked in order, a structure in which the first electrode (110), the intermediate layer (130), the second electrode (150), and the second capping layer are stacked in order, or a structure in which the first capping layer, the first electrode (110), the intermediate layer (130), the second electrode (150), and the second capping layer are stacked in order.

[0382] Light generated in the light-emitting layer of the intermediate layer (130) of the light-emitting element (10) can be emitted to the outside through the first electrode (110), which is a semi-transparent electrode or a transparent electrode, and the first capping layer, and light generated in the light-emitting layer of the intermediate layer (130) of the light-emitting element (10) can be emitted to the outside through the second electrode (150), which is a semi-transparent electrode or a transparent electrode, and the second capping layer.

[0383] The first capping layer and the second capping layer can serve to improve external light emission efficiency based on the principle of constructive interference. As a result, the light extraction efficiency of the light-emitting element (10) is increased, and the light emission efficiency of the light-emitting element (10) can be improved.

[0384] Each of the above first capping layer and second capping layer may include a material having a refractive index of 1.6 or higher (at 589 nm).

[0385] The first capping layer and the second capping layer may independently be an organic capping layer containing organic material, an inorganic capping layer containing inorganic material, or an organic-inorganic composite capping layer containing organic material and inorganic material.

[0386] At least one of the first capping layer and the second capping layer may independently comprise a carbocyclic compound, a heterocyclic compound, an amine group-containing compound, porphine derivatives, phthalocyanine derivatives, naphthalocyanine derivatives, an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine group-containing compound may optionally be substituted with a substituent comprising O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. According to one embodiment, at least one of the first capping layer and the second capping layer may independently comprise an amine group-containing compound.

[0387] For example, at least one of the first capping layer and the second capping layer may independently include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof.

[0388] According to another embodiment, at least one of the first capping layer and the second capping layer may independently comprise one of the compounds HT28 to HT33, one of the following compounds CP1 to CP6, β-NPB, or any of the same:

[0389]

[0390]

[0391] [Electronic device]

[0392] The light-emitting element may be included in various electronic devices. For example, an electronic device including the light-emitting element may be a light-emitting device, an authentication device, etc.

[0393] The electronic device (e.g., light-emitting device) may further include, in addition to the light-emitting element, i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and / or color conversion layer may be disposed in at least one direction of propagation of light emitted from the light-emitting element. For example, the light emitted from the light-emitting element may be blue light or white light. Refer to the description of the light-emitting element above. According to one embodiment, the color conversion layer may include quantum dots. The quantum dots may be, for example, quantum dots as described in this specification.

[0394] The electronic device may include a first substrate. The first substrate may include a plurality of subpixel regions, the color filter may include a plurality of color filter regions corresponding to each of the plurality of subpixel regions, and the color conversion layer may include a plurality of color conversion regions corresponding to each of the plurality of subpixel regions.

[0395] A pixel defining film is placed between the plurality of subpixel regions above to define each subpixel region.

[0396] The above color filter may further include a plurality of color filter regions and a light-blocking pattern disposed between the plurality of color filter regions, and the color conversion layer may further include a plurality of color conversion regions and a light-blocking pattern disposed between the plurality of color conversion regions.

[0397] The plurality of color filter regions (or plurality of color conversion regions) comprises a first region emitting a first color light; a second region emitting a second color light; and / or a third region emitting a third color light, wherein the first color light, the second color light, and / or the third color light may have different maximum emission wavelengths. For example, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. For example, the plurality of color filter regions (or plurality of color conversion regions) may include quantum dots. Specifically, the first region may include red quantum dots, the second region may include green quantum dots, and the third region may not include quantum dots. Refer to the description of quantum dots as provided in this specification. The first region, the second region, and / or the third region may each further include scatterers.

[0398] For example, the light-emitting element may emit a first light, the first region may absorb the first light to emit a first-1 color light, the second region may absorb the first light to emit a second-1 color light, and the third region may absorb the first light to emit a third-1 color light. In this case, the first-1 color light, the second-1 color light, and the third-1 color light may have different maximum emission wavelengths. Specifically, the first light may be blue light, the first-1 color light may be red light, the second-1 color light may be green light, and the third-1 color light may be blue light.

[0399] The above electronic device may further include a thin-film transistor in addition to the light-emitting element described above. The thin-film transistor may include a source electrode, a drain electrode, and an active layer, and either one of the source electrode and the drain electrode may be electrically connected to either one of the first electrode and the second electrode of the light-emitting element.

[0400] The above thin-film transistor may further include a gate electrode, a gate insulating film, etc.

[0401] The above active layer may include crystalline silicon, amorphous silicon, organic semiconductor, oxide semiconductor, etc.

[0402] The electronic device may further include a sealing portion for sealing a light-emitting element. The sealing portion may be disposed between the color filter and / or color conversion layer and the light-emitting element. The sealing portion allows light from the light-emitting element to be emitted to the outside while simultaneously blocking external air and moisture from penetrating the light-emitting element. The sealing portion may be a sealing substrate comprising a transparent glass substrate or a plastic substrate. The sealing portion may be a thin film encapsulation layer comprising one or more organic and / or inorganic layers. If the sealing portion is a thin film encapsulation layer, the electronic device may be flexible.

[0403] On the sealing portion, in addition to the color filter and / or color conversion layer, various functional layers may be additionally disposed depending on the application of the electronic device. Examples of the functional layers may include a touchscreen layer, a polarizing layer, etc. The touchscreen layer may be a pressure-sensitive touchscreen layer, a capacitive touchscreen layer, or an infrared touchscreen layer. The authentication device may be, for example, a biometric authentication device that authenticates an individual using biometric information (e.g., fingertip, pupil, etc.).

[0404] The authentication device described above may further include means for collecting biometric information in addition to the light-emitting element described above.

[0405] The above electronic device can be applied to various displays, light sources, lighting, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, electronic game consoles, medical devices (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram display devices, ultrasound diagnostic devices, endoscope display devices), fish finders, various measuring instruments, instruments (e.g., instruments for vehicles, aircraft, and ships), projectors, etc.

[0406] [Explanation of Figures 2 and 3]

[0407] FIG. 2 is a cross-sectional view of a light-emitting device according to one embodiment of the present invention.

[0408] The light-emitting device of FIG. 2 includes a substrate (100), a thin-film transistor (TFT), a light-emitting element, and a sealing portion (300) that seals the light-emitting element.

[0409] The substrate (100) may be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer (210) may be disposed on the substrate (100). The buffer layer (210) may prevent the penetration of impurities through the substrate (100) and may serve to provide a flat surface on the upper surface of the substrate (100).

[0410] A thin-film transistor (TFT) may be disposed on the buffer layer (210). The thin-film transistor (TFT) may include an active layer (220), a gate electrode (240), a source electrode (260), and a drain electrode (270).

[0411] The active layer (220) may include an inorganic semiconductor, an organic semiconductor, or an oxide semiconductor such as silicon or polysilicon, and includes a source region, a drain region, and a channel region.

[0412] A gate insulating film (230) for insulating the active layer (220) and the gate electrode (240) may be disposed on the upper part of the active layer (220), and a gate electrode (240) may be disposed on the upper part of the gate insulating film (230).

[0413] An interlayer insulating film (250) may be disposed on the upper portion of the gate electrode (240). The interlayer insulating film (250) is disposed between the gate electrode (240) and the source electrode (260) and between the gate electrode (240) and the drain electrode (270) to insulate them.

[0414] A source electrode (260) and a drain electrode (270) may be disposed on the interlayer insulating film (250). The interlayer insulating film (250) and the gate insulating film (230) may be formed so as to expose the source region and the drain region of the active layer (220), and the source electrode (260) and the drain electrode (270) may be disposed to be in contact with the exposed source region and the drain region of the active layer (220).

[0415] Such a thin-film transistor (TFT) can be electrically connected to a light-emitting element to drive the light-emitting element and is covered and protected by a passivation layer (280). The passivation layer (280) may include an inorganic insulating film, an organic insulating film, or a combination thereof. A light-emitting element is provided on the passivation layer (280). The light-emitting element includes a first electrode (110), an intermediate layer (130), and a second electrode (150).

[0416] The first electrode (110) may be disposed on the passivation layer (280). The passivation layer (280) may be disposed so as to expose a certain area without covering the entire drain electrode (270), and the first electrode (110) may be disposed to be connected to the exposed drain electrode (270).

[0417] A pixel defining film (290) including an insulating material may be disposed on the first electrode (110). The pixel defining film (290) exposes a predetermined area of ​​the first electrode (110), and an intermediate layer (130) may be formed in the exposed area. The pixel defining film (290) may be a polyimide or polyacrylic-based organic film. Although not shown in FIG. 2, some or more layers of the intermediate layer (130) may extend to the upper part of the pixel defining film (290) and be disposed in the form of a common layer.

[0418] A second electrode (150) is disposed on the intermediate layer (130), and a capping layer (170) may be additionally formed on the second electrode (150). The capping layer (170) may be formed to cover the second electrode (150).

[0419] A sealing portion (300) may be disposed on the capping layer (170). The sealing portion (300) may be disposed on a light-emitting element and serve to protect the light-emitting element from moisture or oxygen. The sealing portion (300) may include an inorganic film comprising silicon nitride (SiNx), silicon oxide (SiOx), indium tin oxide, indium zinc oxide, or any combination thereof; an organic film comprising polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, an acrylic resin (e.g., polymethyl methacrylate, polyacrylic acid, etc.), an epoxy resin (e.g., AGE (aliphatic glycidyl ether), etc.) or any combination thereof; or a combination of an inorganic film and an organic film.

[0420] FIG. 3 is a cross-sectional view of a light-emitting device according to another embodiment of the present invention.

[0421] The light-emitting device of FIG. 3 is the same light-emitting device as FIG. 2, except that a light-blocking pattern (500) and a functional area (400) are additionally disposed on the upper part of the encapsulation portion (300). The functional area (400) may be i) a color filter area, ii) a color conversion area, or iii) a combination of a color filter area and a color conversion area. According to one embodiment, the light-emitting element included in the light-emitting device of FIG. 3 may be a tandem light-emitting element.

[0422] [Explanation of Fig. 4]

[0423] FIG. 4 is a graph showing the change in driving voltage (△V, V) over time (hr) at a brightness of 420 nit for light-emitting elements of Examples 1 to 5 and Comparative Examples 1 to 5 according to one embodiment of the present invention.

[0424] Through the above Fig. 4, it can be confirmed that the light-emitting elements of Examples 1 to 5 have a lower progressive driving voltage and a longer lifespan compared to the light-emitting elements of Comparative Examples 1 to 5.

[0425] [Manufacturing Method]

[0426] Each layer included in the hole transport region, each light-emitting layer, and each layer included in the electron transport region can be formed in a predetermined region using various methods such as vacuum deposition, spin coating, casting, LB method (Langmuir-Blodgett), inkjet printing, laser printing, and laser thermal imaging (LITI).

[0427] When each layer included in the hole transport region, the emissive layer, and each layer included in the electron transport region are formed by vacuum deposition, the deposition conditions are, for example, a deposition temperature of about 100 to about 500°C, and about 10 -8 to about 10 -3Within a vacuum level of torr and a deposition rate range of about 0.01 to about 100 Å / sec, the material to be included in the layer to be formed and the structure of the layer to be formed can be selected.

[0428] [Definition of Terms]

[0429] C3-C in this specification 60 A carbocyclic group refers to a cyclic group having 3 to 60 carbon atoms, consisting solely of carbon as ring-forming atoms, and C1-C 60 A heterocyclic group refers to a cyclic group having 1 to 60 carbon atoms that includes, in addition to carbon, a heteroatom as a ring-forming atom. The above C3-C 60 Carbocyclic group and C1-C 60 Each heterocyclic group may be a monocyclic group consisting of one ring or a polycyclic group in which two or more rings are condensed together. For example, the above C1-C 60 The number of ring-forming atoms in a heterocyclic group can be 3 to 61.

[0430] In this specification, the cyclic group is the above C3-C 60 Carbocyclic group and C1-C 60 Includes all heterocyclic groups.

[0431] In this specification, π electron-excess C3-C 60 cyclic group (π electron-rich C3-C 60 A cyclic group refers to a cyclic group having 3 to 60 carbon atoms that does not contain *-N=*' as a ring-forming moiety, and π electron-deficient nitrogen-containing C1-C 60 cyclic group (π electron-deficient nitrogen-containing C1-C 60 A cyclic group refers to a heterocyclic group having 1 to 60 carbon atoms containing *-N=*' as a ring-forming moiety.

[0432] for example,

[0433] The above C3-C 60 The carbocyclic group may be i) group T1 or ii) a condensed ring group formed by the condensation of two or more groups T1 (e.g., cyclopentadiene group, adamantane group, norbornane group, benzene group, pentylene group, naphthalene group, azulene group, indacene group, acenaphtylene group, phenalene group, phenanthrene group, anthracene group, fluoranthene group, triphenylene group, pyrene group, chrysene group, perylene group, pentapene group, heptylene group, naphthacene group, fisene group, hexacene group, pentacene group, rubicene group, coronene group, ovalene group, indene group, fluorene group, spiro-bifluorene group, benzofluorene group, indenophenanthrene group, or indenoanthracene group), and

[0434] The above C1-C 60A heterocyclic group is i) group T2, ii) a condensed ring group formed by the condensation of two or more groups T2, or iii) a condensed ring group formed by the condensation of one or more groups T2 and one or more groups T1 (e.g., pyrrole group, thiophene group, furan group, indole group, benzodole group, naphthoyndole group, isodole group, benzisoindole group, naphthoyisoindole group, benzocillol group, benzothiophene group, benzofuran group, carbazole group, dibenzocillol group, dibenzothiophene group, dibenzofuran group, indenocarbazole group, indolocarbazole group, benzofurocarbazole group, benzothienocarbazole group, benzocillolocarbazole group, benzodolocarbazole group, benzoindolocarbazole group, benzocarbazole group, benzonaphthofuran group, benzonaphthiophene group, Benzonaphthosilol group, benzofurodibenzofuran group, benzofurodibenzothiophen group, benzothienodibenzothiophen group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiaazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzisoxazole group, benzothiaazole group, benzisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzoquinoline group, benzisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazolin group, benzoquinazolin group, phenanthroline group, sinoline group, phthalazine group, It may be the naftiridine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluoren group, azadibenzocilol group, azadibenzothiophen group, azadibenzofuran group, etc.),

[0435] The above π electron-excess C3-C 60A cyclic group is i) group T1, ii) a condensed ring group formed by condensing two or more groups T1 together, iii) group T3, iv) a condensed ring group formed by condensing two or more groups T3 together, or v) a condensed ring group formed by condensing one or more groups T3 and one or more groups T1 together (e.g., the above C3-C 60 Carbocyclic group, 1H-pyrrole group, Silol group, Borole group, 2H-pyrrole group, 3H-pyrrole group, Thiophene group, Furan group, Indole group, Benzoindole group, Naphthoyindole group, Isoindole group, Benzoisoindole group, Naphthoyisoindole group, Benzocilol group, Benzothiophene group, Benzofuran group, Carbazole group, Dibenzocilol group, Dibenzothiophene group, Dibenzofuran group, Indenocarbazole group, Indolocarbazole group, Benzofurocarbazole group, Benzothienocarbazole group, Benzocilolocarbazole group, Benzoindolocarbazole group, Benzocarbazole group, Benzonaphthofuran group, Benzonaphthothiophene group, Benzonaphtholilol group, Benzofurodibenzofuran group, It may be the benzopurodibenzothiophen group, benzothienodibenzothiophen group, etc.,

[0436] The above π electron-deficient nitrogen-containing C1-C 60A cyclic group is i) group T4, ii) a condensed ring group formed by the condensation of two or more groups T4, iii) a condensed ring group formed by the condensation of one or more groups T4 and one or more groups T1, iv) a condensed ring group formed by the condensation of one or more groups T4 and one or more groups T3, or v) a condensed ring group formed by the condensation of one or more groups T4, one or more groups T1, and one or more groups T3 (e.g., pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiaazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzisoxazole group, benzothiaazole group, benzisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, It may be the isoquinoline group, benzoquinoline group, benzisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazolin group, benzoquinazolin group, phenanthroline group, sinoline group, phthalazine group, naftiridine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluoren group, azadibenzocilol group, azadibenzothiophen group, azadibenzofuran group, etc.),

[0437] The above group T1 is a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, a cyclooctane group, a cyclobutene group, a cyclopentene group, a cyclopentadiene group, a cyclohexene group, a cyclohexadiene group, a cycloheptene group, an adamantane group, norbornane (or, bicyclo[2.2.1]heptane)) group, norbornene group, a bicyclo[1.1.1]pentane group, a bicyclo[2.1.1]hexane group, a bicyclo[2.1.1]octane group, or a benzene group, and

[0438] The above group T2 is a furan group, a thiophene group, a 1H-pyrrole group, a silol group, a borole group, a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazol group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiaazole group, a thiadiazole group, azasilol group, azaborol group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a tetrazine group, a pyrrolidine group, an imidazolidine group, a dihydropyrrole group, a piperidine group, a tetrahydropyridine group, a dihydropyridine group, a hexahydropyrimidine group, a tetrahydropyrimidine group, a dihydropyrimidine group, a piperazine group, a tetrahydropyrazine group, It is a dihydropyrazine group, a tetrahydropyridazine group, or a dihydropyridazine group, and

[0439] The above group T3 is a furan group, a thiophene group, an 1H-pyrrole group, a silol group, or a borole group, and

[0440] The above group T4 may be a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazol group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiaazole group, a thiadiazole group, an azacilol group, an azaborol group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or a tetrazine group.

[0441] In this specification, the cyclic group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, π electron-excess C3-C 60 Cyclic group or π electron-deficient nitrogenous C1-C 60 The term "cyclic group" may be a group condensed to any cyclic group, a monovalent group, or a polyvalent group (e.g., a divalent group, a trivalent group, a tetravalent group, etc.) depending on the structure of the chemical formula in which the term is used. For example, "benzene group" may be a benzo group, a phenyl group, a phenylene group, etc., which can be easily understood by a person skilled in the art depending on the structure of the chemical formula containing the "benzene group."

[0442] For example, 1 valence C3-C 60 Carbocyclic group and 1 valence C1-C 60 An example of a heterocyclic group is C3-C 10 Cycloalkyl group, C1-C 10 Heterocycloalkyl group, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C1-C 60 It may include a heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic heterocondensed polycyclic group, and a divalent C3-C 60 Carbocyclic group and 1 valence C1-C 60 An example of a heterocyclic group is C3-C 10 Cycloalkylene group, C1-C 10Heterocycloalkylene group, C3-C 10 Cycloalkenylene group, C1-C 10 Heterocycloalkenylene group, C6-C 60 Aryllene group, C1-C 60 It may include a heteroarylene group, a divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic heterocondensed polycyclic group.

[0443] C1-C in this specification 60 The alkyl group refers to a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, and specific examples thereof include a methyl group, an ethyl group, n -Propyl group, isopropyl group, n -butyl group, sec -butyl group, isobutyl group, tert -butyl group, n -Pentyl, tert -Pentyl group, neopentyl group, isopentyl group, sec -pentyl group, 3-pentyl group, sec -Isopentyl group, n - Hexyl group, isohexyl group, sec -hexyl group, tert -hexyl group, n - heptyl group, isoheptyl group, sec -Heptyl group, tert -Heptyl group, n -Octyl group, iso-octyl group, sec -Octyl group, tert -Octyl group, n -Nonilgi, Isononilgi, sec -Playing, tert -Playing, n - Decyl group, isodecyl group, sec -Desil, tert - Includes decyl groups, etc. C1-C in this specification. 60 The alkylene group is the C1-C 60 It refers to a divalent group having the same structure as an alkyl group.

[0444] C2-C in this specification 60 The alkenyl group is C2-C 60It refers to a monovalent hydrocarbon group comprising one or more carbon-carbon double bonds at the middle or terminal of an alkyl group, and specific examples thereof include an ethenyl group, a propenyl group, a butenyl group, etc. In this specification, C2-C 60 The alkenylene group is the above C2-C 60 It refers to a divalent group having the same structure as an alkenyl group.

[0445] C2-C in this specification 60 The alkynyl group is C2-C 60 It refers to a monovalent hydrocarbon group comprising one or more carbon-carbon triple bonds at the middle or terminal of an alkyl group, and specific examples thereof include ethinyl groups, propynyl groups, etc. In this specification, C2-C 60 The alkynylene group is the above C2-C 60 It refers to a divalent group having the same structure as an alkynyl group.

[0446] C1-C in this specification 60 The alkoxy group is -OA 101 (Here, A 101 The above C1-C 60 It refers to a monovalent group having the chemical formula of an alkyl group, and specific examples thereof include a methoxy group, an ethoxy group, an isopropyloxy group, etc.

[0447] C3-C in this specification 10 A cycloalkyl group refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and specific examples thereof include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, an adamantanyl group, norbornanyl group (or, a bicyclo[2.2.1]heptyl group), a bicyclo[1.1.1]pentyl group, a bicyclo[2.1.1]hexyl group, a bicyclo[2.1.1]octyl group, etc. In this specification, C3-C 10 The cycloalkylene group is the C3-C 10It refers to a divalent group having the same structure as a cycloalkyl group.

[0448] C1-C in this specification 10 A heterocycloalkyl group refers to a monovalent cyclic group having 1 to 10 carbon atoms, comprising at least one heteroatom as a ring-forming atom in addition to a carbon atom, and specific examples thereof include a 1,2,3,4-oxatriazolidinyl group, a tetrahydrofuranyl group, a tetrahydrothiophenyl group, etc. In this specification, C1-C 10 The heterocycloalkylene group is the C1-C 10 It refers to a divalent group having the same structure as a heterocycloalkyl group.

[0449] C3-C in this specification 10 A cycloalkenyl group refers to a monovalent cyclic group having 3 to 10 carbon atoms, having at least one carbon-carbon double bond within the ring, but not having aromaticity; specific examples thereof include cyclopentenyl groups, cyclohexenyl groups, cycloheptenyl groups, etc. In this specification, C3-C 10 The cycloalkenylene group is the above C3-C 10 It refers to a divalent group having the same structure as a cycloalkenyl group.

[0450] C1-C in this specification 10 The heterocycloalkenyl group is a monovalent cyclic group having 1 to 10 carbon atoms, comprising, in addition to the carbon atom, at least one heteroatom as a ring-forming atom, and has at least one double bond within the ring. The C1-C 10 Specific examples of heterocycloalkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazoleyl groups, 2,3-dihydrofuranyl groups, 2,3-dihydrothiophenyl groups, etc. In this specification, C1-C 10 The heterocycloalkenylene group is the above C1-C 10It refers to a divalent group having the same structure as a heterocycloalkenyl group.

[0451] C6-C in this specification 60 An aryl group refers to a monovalent group having a carbocyclic aromatic system with 6 to 60 carbon atoms, and C6-C 60 An arylene group refers to a divalent group having a carbocyclic aromatic system having 6 to 60 carbon atoms. The above C6-C 60 Specific examples of aryl groups include phenyl group, pentalenyl group, naphthyl group, azulenyl group, indacenyl group, acenaphthyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, perylenyl group, pentaphenyl group, Includes hepthalenyl group, naphthacenyl group, fisenyl group, hexacenyl group, penthacenyl group, rubisenyl group, coronenyl group, ovalenyl group, etc. The above C6-C 60 Aryl group and C6-C 60 If the arylene group contains two or more rings, the two or more rings can be condensed together.

[0452] C1-C in this specification 60 A heteroaryl group refers to a monovalent group having a heterocyclic aromatic system having 1 to 60 carbon atoms, comprising at least one heteroatom as a ring-forming atom in addition to a carbon atom, and C1-C 60 A heteroarylene group refers to a divalent group having a heterocyclic aromatic system having 1 to 60 carbon atoms, which additionally includes at least one heteroatom as a ring-forming atom in addition to the carbon atoms. 60 Specific examples of heteroaryl groups include pyridinyl groups, pyrimidinyl groups, pyrazinyl groups, pyridazinyl groups, triazinyl groups, quinolinyl groups, benzoquinolinyl groups, isoquinolinyl groups, benzisoquinolinyl groups, quinoxalinyl groups, benzoquinoxalinyl groups, quinazolinyl groups, benzoquinazolinyl groups, cinolinyl groups, phenanthrolinyl groups, phthalazinyl groups, naphthalidinyl groups, etc. The above C1-C60 heteroaryl group and C1-C 60 When a heteroarylene group contains two or more rings, the two or more rings can be condensed together.

[0453] In this specification, a monovalent non-aromatic condensed polycyclic group refers to a monovalent group (e.g., having 8 to 60 carbon atoms) in which two or more rings are condensed together, and the entire molecule contains only carbon as a ring-forming atom and has non-aromaticity. Specific examples of the monovalent non-aromatic condensed polycyclic group include indenyl groups, fluorenyl groups, spiro-bifluorenyl groups, benzofluorenyl groups, indenopenantrenyl groups, indenoanthracenyl groups, etc. In this specification, a divalent non-aromatic condensed polycyclic group refers to a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

[0454] In this specification, a monovalent non-aromatic condensed heteropolycyclic group means a monovalent group (e.g., having 1 to 60 carbon atoms) in which two or more rings are condensed together, and in addition to carbon atoms as ring-forming atoms, at least one heteroatom is included, and the entire molecule is non-aromatic. Specific examples of the above monovalent non-aromatic heterocondensed polycyclic group include: a pyrrole group, a thiophenyl group, a furanyl group, an indole group, a benzoindole group, a naphthoindole group, an isoindole group, a benzoisoindole group, a naphthoisoindole group, a benzocylol group, a benzothiophenyl group, a benzofuranyl group, a carbazole group, a dibenzocylol group, a dibenzothiophenyl group, a dibenzofuranyl group, azacarbazole group, azafluorenyl group, azadibenzocylol group, azadibenzothiophenyl group, azadibenzofuranyl group, a pyrazol group, an imidazole group, a triazole group, a tetrazole group, an oxazole group, an isooxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group, a thiadiazole group, Includes benzopyrazol group, benzimidazole group, benzoxazole group, benzothiazole group, benzoxadiazole group, benzothiadiazole group, imidazopyridinyl group, imidazopyrimidinyl group, imidazotriazinyl group, imidazopyrazinyl group, imidazopyridazinyl group, indenocarbazole group, indolocarbazole group, benzofurocarbazole group, benzothienocarbazole group, benzosilolocarbazole group, benzindolocarbazole group, benzocarbazole group, benzonaphthofuranyl group, benzonaphthothiophenyl group, benzonaphthosilol group, benzofurodibenzofuranyl group, benzofurodibenzothiophenyl group, benzothienodibenzothiophenyl group, etc. In this specification, a divalent non-aromatic heterocondensed polycyclic group refers to a divalent group having the same structure as the monovalent non-aromatic heterocondensed polycyclic group.

[0455] C6-C in this specification 60 The aryloxy group is -OA 102 (Here, A 102 is the above C6-C 60 Pointing to arylgime), and the above C6-C 60arylthio is -SA 103 (Here, A 103 The above C6-C 60 It refers to Arilgiim).

[0456] C7-C in this specification 60 The arylalkyl group is -A 104 A 105 (Here, A 104 is C1-C 54 It is an alkylene group, and A 105 is C6-C 59 Referring to arylgiim), and C2-C in this specification 60 The heteroarylalkyl group is -A 106 A 107 (Here, A 106 C1-C 59 It is an alkylene group, and A 107 C1-C 59 It refers to a heteroaryl group.

[0457] "R" in this specification 10a "Is,

[0458] Deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group;

[0459] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, C7-C 60 Arylalkyl group, C2-C 60 Heteroarylalkyl group, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12), or substituted or unsubstituted with any combination thereof, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, or C1-C 60 Alkoxygenation;

[0460] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, C1-C 60 Alkoxy group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, C7-C 60 Arylalkyl group, C2-C 60 Heteroarylalkyl group, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ), or substituted or unsubstituted with any combination thereof, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, C7-C 60 Arylalkyl group, or C2-C 60 heteroarylalkyl group,; or

[0461] -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q31 ), -S(=O)2(Q 31 ), or -P(=O)(Q 31 )(Q 32 );

[0462] It could be.

[0463] Q1 to Q3, Q in this specification 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 They are independently hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 Alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy group; or deuterium, -F, cyano group, C1-C 60 Alkyl group, C1-C 60 C3-C substituted or unsubstituted with an alkoxy group, a phenyl group, a biphenyl group, or any combination thereof 60 Carbocyclic group, C1-C 60 Heterocyclic group; C7-C 60 Arylalkyl group; or C2-C 60 It may be a heteroarylalkyl group.

[0464] In this specification, a heteroatom refers to any atom other than a carbon atom. Examples of such heteroatoms include O, S, N, P, Si, B, Ge, Se, or any combination thereof.

[0465] In this specification, third-row transition metals include hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), and gold (Au), etc.

[0466] In this specification, "Ph" means a phenyl group, "Me" means a methyl group, "Et" means an ethyl group, and "ter-Bu" or "But " represents the tert-butyl group, and "OMe" represents the methoxy group.

[0467] In this specification, "biphenyl group" means "phenyl group substituted with a phenyl group." The "biphenyl group" is a substituent of "C6-C 60 It belongs to the "substituted phenyl group" which is an "aryl group".

[0468] In this specification, "terphenyl group" means "phenyl group substituted with a biphenyl group." The "terphenyl group" is a substituent of "C6-C 60 C6-C substituted with aryl groups 60 It belongs to the "substituted phenyl group" which is an "aryl group".

[0469] In this specification, * and *' refer to bonding sites with neighboring atoms in the corresponding chemical formula or moiety, unless otherwise defined.

[0470] Hereinafter, a compound and a light-emitting device according to one embodiment of the present invention will be described in more detail with reference to synthesis examples and embodiments. In the following synthesis examples, the molar equivalent of A and the molar equivalent of B are the same in the expression "B was used instead of A."

[0471] [Example]

[0472] Synthesis Example A: Synthesis of intermediate C (1)

[0473]

[0474] Synthesis of intermediate C(1)-4

[0475] 2,6-difluoroaniline (4.55 g, 1 eq), 1-iodo-2-methoxybenzene (17 g, 2.1 eq), Cu (4.6 g, 2 eq), K2CO3 (12.5 g, 2.6 eq), and 60 ml of o-DCB were placed in a 1-neck round-bottom flask and stirred at 180°C for 3 days. The residue obtained after the reaction was separated and purified by column chromatography using a mixture of methylene chloride and hexane (volume ratio 1:2) as the developing solvent to obtain approximately 6.7 g (yield: 56%) of intermediate C(1)-4.

[0476] Synthesis of intermediate C(1)-3

[0477] The above intermediate C(1)-4 (9.5 g, 1 eq), NBS (4.9 g, 1 eq), and 150 ml of methylene chloride were placed in a 1-neck round-bottom flask and stirred at room temperature for 12 hours. The residue obtained after the reaction was separated and purified by column chromatography using a mixture of methylene chloride and hexane (volume ratio 1:5) as the developing solvent to obtain approximately 7 g of intermediate C(1)-3 (yield: 85%).

[0478] Synthesis of intermediate C(1)-2

[0479] The above intermediate C(1)-3 (7 g, 1 eq) and 250 ml of MC were placed in a 3-neck round-bottom flask, and BBr3 (3.89 ml, 2.5 eq) dissolved in 60 ml of methylene chloride was added dropwise while stirring at -78°C. After the dropwise addition was finished, the mixture was stirred at 0°C for 4 hours. After the reaction was completed, it was extracted with MC. The organic layer obtained therefrom was dried with MgSO4, and the solvent was evaporated to obtain approximately 6 g of intermediate C(1)-2 (yield: 92%).

[0480] Synthesis of intermediate C(1)-1

[0481] The above intermediate C(1)-2 (6 g, 1 eq), K2CO3 (6.34 g, 3 eq), and 200 ml of DMF were placed in a 1-neck round-bottom flask and stirred at 110°C for 8 hours. After the reaction was complete, the DMF was removed. Subsequently, the solvent was distilled off under reduced pressure using a silica gel short-pass column, and the resulting solid was recrystallized with ether to obtain approximately 4.8 g of intermediate C(1)-1 (yield: 89%).

[0482] Synthesis of intermediate C(1)

[0483] The above intermediate C(1)-1 (2g, 1eq) and 20ml of THF were placed in a 3-neck round-bottom flask, and n-BuLi (2.7ml, 1.2eq) was added at -78℃ and stirred for 30 minutes. Subsequently, 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (1.7ml, 1.5eq) was added dropwise. After the dropwise addition was completed, the mixture was stirred at room temperature for 3 hours. After the reaction was finished, the mixture was separated and purified by column chromatography using a mixture of ethyl acetate (EA) and hexane (volume ratio 1:2) as the developing solvent to obtain approximately 0.4g of intermediate C(1) (yield: 20%).

[0484] Synthesis Example B: Synthesis of intermediate C (2)

[0485]

[0486] Intermediate C (2) was prepared in the same manner as Synthesis Example A, except that in the synthesis of intermediate C (1)-3, 2 eq of NBS was used instead of 1 eq, and in the synthesis of intermediate C (1), 3 eq of 2-isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane was used instead of 1.5 eq.

[0487] Synthesis Example C: Synthesis of intermediate C (3)

[0488]

[0489] Intermediate C (3) was prepared in the same manner as Synthesis Example A, except that in the synthesis method of intermediate C (1), 4-bromo-2,6-difluoroaniline was used instead of 2,6-difluoroaniline in the synthesis process of intermediate C (1)-4, and the synthesis process of intermediate C (1)-3 was excluded.

[0490] Synthesis Example D: Synthesis of intermediate C (4)

[0491]

[0492] Intermediate C(4)-2 was synthesized using the same process as in Synthesis Example A, except for the synthesis process of intermediate C(1)-3. Additionally, intermediate C(4)-1 was synthesized using 2 eq of NBS instead of 1 eq in the synthesis process of intermediate C(1)-3, and intermediate C(4) was synthesized using 3 eq of 2-isopropoxy-4,4,5,5,-tetramethyl-1,3,2-dioxaborolane instead of 1.5 eq in the synthesis of intermediate C(1).

[0493] Synthesis Example 1: Synthesis of Compound 1

[0494]

[0495] The above intermediate C(1) (1.8 g, 1 eq), 4-bromo-1,1'-biphenyl (1.3 g, 1.2 eq), Pd(PPh3)4 (0.5 g, 0.05 eq), K2CO3 (2.4 g, 3 eq), and 40 / 10 ml of THF / H2O were placed in a 1-neck round-bottom flask and stirred at 70°C for 12 hours. After the reaction was complete, the resulting mixture was separated and purified by column chromatography using a mixture of methylene chloride (MC) and hexane (1:5) as the developing solvent to obtain about 1.1 g of compound 1 (yield: 58%; purity: 99%). Subsequently, sublimation purification was performed to obtain about 1 g of compound 1 (purity: 99.99% or higher).

[0496] Synthesis Example 2: Synthesis of Compound 5

[0497]

[0498] Compound 5 was synthesized in the same manner as Synthesis Example 1, except that 2.4 eq of the above halogen compound was used instead of 4-bromo-1,1'-biphenyl.

[0499] Synthesis Example 3: Synthesis of Compound 30

[0500]

[0501] Compound 30 was synthesized in the same manner as Synthesis Example 1, except that intermediate C (2) was used instead of intermediate C (1), and 2.4 eq of the above halogen compound was used instead of 4-bromo-1,1'-biphenyl.

[0502] Synthesis Example 4: Synthesis of Compound 62

[0503]

[0504] Compound 62 was synthesized in the same manner as in Synthesis Example 1, except that intermediate C (3) was used instead of intermediate C (1), and the above halogen compound was used instead of 4-bromo-1,1'-biphenyl.

[0505] Synthesis Example 5: Synthesis of Compound 90

[0506]

[0507] Compound 90 was synthesized in the same manner as in Synthesis Example 1, except that intermediate C (4) was used instead of intermediate C (1), and 2.4 eq of the above halogen compound was used instead of 4-bromo-1,1'-biphenyl.

[0508] compound H NMR (δ) MS / FAB Calc Found 1 7.75 (dd, 2H), 7.49-7.25 (m, 10H), 7.14 (d, 1H), 7.01-6.96(m, 4H), 6.68 (d, 2H) 425.49 425.14 5 8.95(d, 1H), 8.50(d,1H), 8.20(d, 1H), 8.09(d, 1H), 7.96(d, 2H), 7.77(t, 1H), 7.60-7.52(m, 3H), 7.39-7.25(m,8H), 7.14(d, 1H),7.01-6.96(m, 4H), 6.68(d, 2H) 551.19 552.11 30 7.96(d, 4H), 7.79(d, 4H), 7.60(d, 4H), 7.46-7.25(m, 20H), 6.97(t, 1H), 6.68(d, 2H) 729.27 730.21 62 7.98(d, 1H), 7.82(d, 1H), 7.69(d, 1H), 7.57-7.54(m, 2H), 7.39-7.31(m, 2H), 7.14(d, 2H), 7.01-6.95(m, 8H) 439.47 440.50 90 7.90(d, 2H), 7.78(d, 2H), 7.65(d, 2H), 7.55(d, 2H), 7.47-7.27(m, 9H), 7.14(d, 1H), 7.01-6.96(m, 5H), 1.69(s, 12H) 657.27 658.33

[0509] Example 1

[0510] As an anode, an anode was formed by sputtering ITO to a thickness of 100 Å on a glass substrate, sputtering Ag to a thickness of 800 Å, and sputtering WOx (x = 2.5~3.0) to a thickness of 100 Å. Subsequently, a PT process was performed on the anode by plasma treating it for 60 seconds with a power of 200 W and a pressure of 5 mTorr, using a 1:1 volume ratio of nitrogen gas and oxygen gas.

[0511] A hole transport layer was formed by depositing compound 1 to a thickness of 1100 Å on the above anode.

[0512] A 300 Å thick light-emitting layer was formed by co-depositing host compound 100 and dopant compound 200 as host and dopant, respectively, in a weight ratio of 97:3 on the hole transport layer.

[0513] An electron transport layer with a thickness of 100 Å was deposited on the upper surface of the above-mentioned light-emitting layer by depositing TPM-TAZ and Liq in a weight ratio of 5:5.

[0514] A light-emitting device was fabricated by vacuum depositing Yb to a thickness of 10 Å on the electron transport layer above, then vacuum depositing Ag-Mg to a thickness of 100 Å to form a cathode, and depositing a CPL to form a capping layer with a thickness of 700 Å.

[0515] Examples 2 to 5

[0516] A light-emitting device was fabricated in the same manner as in Example 1, except that the compound of Table 2 below was used instead of Compound 1 when forming the hole transport layer.

[0517] Example 6

[0518] A light-emitting device was fabricated in the same manner as in Example 1, except that the following MoOx (x = 2.5~3.0) was sputtered to a thickness of 100 Å instead of WOx (x = 2.5~3.0) when forming the anode.

[0519] Comparative Example 1

[0520] Corning 15Ω / cm as anode 2 A light-emitting device was fabricated in the same manner as in Example 1, except that a (1200 Å) ITO glass substrate was used.

[0521] Comparative Example 2

[0522] A light-emitting device was fabricated in the same manner as Comparative Example 1, except that Compound 5 was used instead of Compound 1 when forming the hole transport layer.

[0523] Comparative Example 3

[0524] A light-emitting device was fabricated in the same manner as Comparative Example 1, except that Compound 30 was used instead of Compound 1 when forming the hole transport layer.

[0525] Comparative Example 4

[0526] A light-emitting device was fabricated in the same manner as Comparative Example 1, except that compound HT1 was used instead of compound 1 when forming the hole transport layer.

[0527] Comparative Examples 5 to 7

[0528] A light-emitting device was fabricated in the same manner as in Example 1, except that the compound of Table 2 below was used instead of Compound 1 when forming the hole transport layer.

[0529] Evaluation Example 1

[0530] The work function of the anode and the measured HOMO energy level (eV) of the hole transport layer of the light-emitting devices fabricated in Examples 1 to 6 and Comparative Examples 1 to 7 are shown in Table 2 below.

[0531] Anode Anode work function (eV) Precision transport layer Hole transport layer HOMO energy level (eV) Example 1 ITO / Ag / WOx 5.35 Compound 1 5.25 Example 2 Compound 5 5.34 Example 3 Compound 30 5.26 Example 4 Compound 62 5.27 Example 5 Compound 90 5.30 Example 6 ITO / Ag / MoOx 5.33 Compound 1 5.25 Comparative Example 1 ITO 4.8 Compound 1 5.25 Comparative Example 2 Compound 5 5.34 Comparative Example 3 Compound 30 5.26 Comparative Example 4 HT1 5.15 Comparative Example 5 ITO / Ag / WOx 5.35 HT1 5.15 Comparative Example 6 HT2 5.17 Comparative Example 7 HT3 5.21

[0532]

[0533] Evaluation Example 2

[0534] Using a source meter (Keithley Instrument, 2400 series) at a current density of 10 mA / cm² of the light-emitting elements fabricated in Examples 1 to 5 and Comparative Examples 1 to 5, measurements were taken at one point every 10 minutes under conditions of room temperature and a brightness of MQ 420 nit, and the amount of change in driving voltage over a total of 150 hours was measured, and the results are shown in FIG. 4.

[0535] Evaluation Example 3

[0536] Driving voltage, luminous efficiency, and lifetime (T) at a current density of 10 mA / cm² of the light-emitting devices fabricated in Examples 1 to 6 and Comparative Examples 1 to 7 above 95 The driving voltage of the light-emitting element was measured using a source meter (Keithley Instrument, 2400 series), and the luminous efficiency was measured using the C9920-2-12 luminous efficiency measuring device from Hamamatsu Photonics. For the evaluation of luminous efficiency, the luminance / current density was measured using a luminance meter calibrated for wavelength sensitivity, and the lifespan of the light-emitting element was measured based on the time it takes to reach 95% of the maximum luminance.

[0537] In addition, the progressive driving voltage (△V) of the light-emitting element was measured by applying the same current at room temperature and at a brightness of MQ 420 nit using a source meter (Keithley Instrument, 2400 series) at a current density of 10 mA / cm² of the light-emitting element, and measuring the change in driving voltage after a total of 150 hours. The results of the characteristic evaluation of the light-emitting element are shown in Table 3 below.

[0538] Anode Precision transport layer Driving voltage ( V, @10mA / ) cm 2 ) Luminous efficiency (d / A) LT(T 95 ) △V(V,@150hr) Example 1 ITO / Ag / WOx Compound 1 3.9 6.1 80 0.2 Example 2 ITO / Ag / WOx Compound 5 4.2 5.8 84 0.6 Example 3 ITO / Ag / WOx Compound 30 4.3 6.6 90 0.1 Example 4 ITO / Ag / WOx Compound 62 4.1 6.7 68 0.5 Example 5 ITO / Ag / WOx Compound 90 4.4 6.5 75 0.5 Example 6 ITO / Ag / MoOx Compound 1 4.2 5.7 60 0.3 Comparative Example 1 ITO Compound 1 4.7 6.4 21 2.3 Comparative Example 2 ITO Compound 5 4.9 6.9 18 2.9 Comparative Example 3 ITO Compound 30 5.3 6.6 27 2.2 Comparative Example 4 ITO HT1 4.3 6.3 30 2 Comparative Example 5 ITO / Ag / WOx HT1 4.4 6.4 54 1.5 Comparative Example 6 ITO / Ag / WOx HT2 4.3 6.5 41 1.5 Comparative Example 7 ITO / Ag / WOx HT3 4.4 6.7 30 1.7

[0539]

[0540] Referring to Table 3 above, it can be seen that the light-emitting elements of Examples 1 to 6 have equivalent or lower driving voltage, high luminous efficiency, and long lifespan compared to the light-emitting elements of Comparative Examples 1 to 7, and have reduced progressive driving voltage.

[0541] As such, the present invention has been described with reference to the embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

Claim 1 A light-emitting device comprising: a first electrode; a second electrode facing the first electrode; and an intermediate layer disposed between the first electrode and the second electrode and including a light-emitting layer; wherein the first electrode comprises an inorganic material, the inorganic material comprises a metal oxide having one or more metals selected from the group comprising W, Mo, Ga, Ni, Cu, and Ti as a main component, the intermediate layer comprises a hole transport region disposed between the first electrode and the light-emitting layer, the hole transport region comprises a hole transport layer, and the hole transport layer comprises one or more condensed ring compounds represented by the following chemical formula 1: <Chemical Formula 1> In the above Chemical Formula 1, CY1 to CY3 are independently C5-C 60 Carbocyclic group or C1-C 60 It is a heterocyclic group, X1 is C(R4)(R5), N(R4), O or S, X2 is C(R6)(R7), N(R6), O or S, Y1 is N, B, P or P(=O), L1 to L3 are independently of each other, single bond, at least one R 10a C5-C substituted or unsubstituted 60 Carbocyclic group or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, a1 to a3 are independently one of integers 1 to 5, and Ar1 to Ar3 are independently at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group or at least one R 10a C1-C substituted or unsubstituted 60 It is a heterocyclic group, b1 to b3 are independently one of integers from 1 to 12, n1 is 0, n2 and n3 are independently one of integers from 0 to 5, wherein the sum of n2 and n3 is 1 or more, and R1 is hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R 10a C1-C substituted or unsubstituted 60 alkyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkenyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkynyl group, or at least one R 10a C1-C substituted or unsubstituted 60 Alkoxy group; and R2 to R7 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, at least one R 10a C1-C substituted or unsubstituted 60 alkyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkenyl group, at least one R 10a C2-C substituted or unsubstituted 60 alkynyl group, at least one R 10a C1-C substituted or unsubstituted 60 Alkoxy group, at least one R 10a C3-C substituted or unsubstituted 60 Carbocyclic group, at least one R 10a C1-C substituted or unsubstituted 60 Heterocyclic group, at least one R 10a C6-C substituted or unsubstituted 60 aryloxy group, at least one R 10a C6-C substituted or unsubstituted 60 Arylthio group, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2); and d1 to d3 are independently one of integers 1 to 12, and R 10a is, deuterium (-D), -F, -Cl, -Br, -I, hydroxyl group, cyano group, or nitro group; deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, -Si(Q 11 )(Q 12 )(Q 13 ), -N(Q 11 )(Q 12 ), -B(Q 11 )(Q 12 ), -C(=O)(Q 11 ), -S(=O)2(Q 11 ), -P(=O)(Q 11 )(Q 12 ), or substituted or unsubstituted with any combination thereof, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, or C1-C 60 Alkoxy group; deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, C1-C 60 Alkoxy group, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, C6-C 60 Arylthio group, -Si(Q 21 )(Q 22 )(Q 23 ), -N(Q 21 )(Q 22 ), -B(Q 21 )(Q 22 ), -C(=O)(Q 21 ), -S(=O)2(Q 21 ), -P(=O)(Q 21 )(Q 22 ), or substituted or unsubstituted with any combination thereof, C3-C 60 Carbocyclic group, C1-C 60 Heterocyclic group, C6-C 60 aryloxy group, or C6-C 60 Arylthio group; or-Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ), -B(Q 31 )(Q 32 ), -C(=O)(Q 31 ), -S(=O)2(Q 31 ), or -P(=O)(Q 31 )(Q 32 ); and, above Q1 to Q3, Q 11 to Q 13 , Q 21 to Q 23 and Q 31 to Q 33 They are independently hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 Alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy group; or deuterium, -F, cyano group, C1-C 60 Alkyl group, C1-C 60 C3-C, substituted or unsubstituted with an alkoxy group, or any combination thereof 60 Carbocyclic group or C1-C 60 It is a heterocyclic group. Claim 2 A light-emitting device according to claim 1, wherein the first electrode is an anode and the second electrode is a cathode, and the intermediate layer further comprises an electron transport region disposed between the light-emitting layer and the second electrode, the hole transport region further comprises a hole injection layer, a light-emitting auxiliary layer, an electron blocking layer, or any combination thereof, and the electron transport region comprises a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof. Claim 3 In paragraph 1, the above inorganic material is WO x , MoO x , GaO x , NiO y , CuO y A light-emitting element including , or any combination thereof (where x is a real number satisfying 2.5 ≤ x ≤ 3.0 and y is a real number satisfying 0.5 ≤ y ≤ 1.0). Claim 4 A light-emitting device according to claim 1, wherein the hole transport layer does not include a p-dopant. Claim 5 A light-emitting device according to claim 1, wherein the first electrode and the hole transport layer are in direct contact. Claim 6 In paragraph 1, the above Ar1 to Ar3 are independently of each other, at least one R 10a Substituted or unsubstituted, benzene group, naphthalene group, anthracene group, phenanthrene group, triphenylene group, pyrene group, chrysene group, cyclopentadiene group, 1,2,3,4-tetrahydronaphthalene group, 9,9'-spirobifluorene group, spiro[cyclohexane-1,9'-fluorene] group, thiophene group, furan group, indole group, benzoborol group, benzophospol group, indene group, benzoscilol group, benzozermol group, benzothiophene group, benzoselenophene group, benzofuran group, carbazole group, dibenzoborol group, dibenzophospol group, fluorene group, dibenzocilol group, Dibenzozermol group, dibenzothiophen group, dibenzoselenopene group, dibenzofuran group, dibenzothiophene 5-oxide group, 9H-fluoren-9-one group, dibenzothiophene 5,5-dioxide group, azaindole group, azabenzoborol group, azabenzophospol group, azaindene group, azabenzicillol group, azabenzozermol group, azabenzothiophene group, azabenzoselenopene group, azabenzofuran group, azacarbazole group, azadibenzoborol group, azadibenzophospol group, azafluoren group, azadibenzicillol group, azadibenzozermol group, azadibenzothiophene group, azadibenzoselenopene group, azadibenzofuran group, azadibenzothiophene 5-oxide group, Aza-9H-fluoren-9-one group, azadibenzothiophen 5,5-dioxide group, indolocarbazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazolin group, phenanthroline group, pyrrole group, pyrazol group, imidazole group, triazole group, oxazole group, isooxazole group, thiazole group, isothiaazole group, oxadiazole group, thiadiazole group, benzopyrazol group, benzimidazole group, benzoxazole group, benzothiaazole group, benzoxadiazole group,Benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group or 5,6,7,8-tetrahydroquinoline group, and the above R, 10a A light-emitting element, with reference to Paragraph 1 for the description of Claim 7 In claim 1, the light-emitting element, wherein Ar1 to Ar3 are independently one of the following chemical formulas 2-1 to 2-36: Among the above chemical formulas 2-1 to 2-36, Y 21 is O, S, N(Z5), C(Z5)(Z6) or Si(Z5)(Z6), and Z1 to Z6 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazino group, hydrazono group, -CF3, -CF2H, -CFH2, C1-C 20 Alkyl group, C1-C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, naphthyl group, fluorenyl group, spiro-bifluorenyl group, spiro-fluorene-benzoflurenyl group, benzoflurenyl group, dibenzoflurenyl group, phenalenyl group, phenanthrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyridinyl group, pyrimidinyl group, pyrazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, naphthiridinyl group, quinoxalinyl group, quinazolinyl group, phenanthridinyl group, acrridinyl group, phenanthrolinyl group, phenazinyl group, carbazole group, dibenzofuranyl group, Dibenzothiophenyl group, dibenzosilol group, -Si(Q 31 )(Q 32 )(Q 33 ), -N(Q 31 )(Q 32 ) or -B(Q 31 )(Q 32 ) and, e2 is 1 or 2, e3 is one of an integer from 1 to 3, e4 is one of an integer from 1 to 4, e5 is one of an integer from 1 to 5, e6 is one of an integer from 1 to 6, e7 is one of an integer from 1 to 7, e9 is one of an integer from 1 to 9, e10 is one of an integer from 1 to 10, and the above Q 31 to Q 33 are independently of each other, C1-C 10 Alkyl group, C1-C 10 It is an alkoxy group, phenyl group, biphenyl group, terphenyl group, or naphthyl group, and * is a bonding site with an adjacent atom. Claim 8 In claim 1, the condensed ring compound represented by the above chemical formula 1 is a light-emitting element represented by one of the following chemical formulas 1-3 and 1-4: Refer to Claim 1 for the description of X1, X2, Y1, L2, L3, a2, a3, Ar2, and Ar3 in the above chemical formulas 1-3 and 1-4, respectively, and R 11 to R 13 For an explanation regarding , refer to the explanation for R1 in Paragraph 1 respectively, and R 21 to R 24 For an explanation regarding , refer to the explanation for R2 in Paragraph 1 respectively, and R 31 , R 33 and R 34 For an explanation of each, refer to the explanation of R3 in Paragraph 1. Claim 9 In claim 1, the condensed ring compound represented by the above chemical formula 1 is one of the following compounds 1 to 56, a light-emitting element: . Claim 10 A light-emitting device according to claim 1, wherein the first electrode comprises a first layer, a second layer, and a third layer disposed between the first layer and the intermediate layer, the second layer is disposed between the first layer and the third layer, the first layer comprises a first material, the second layer comprises a second material, and the third layer comprises an inorganic material, wherein the first material and the second material are different from each other, and the second material and the inorganic material are different from each other. Claim 11 In claim 10, the light-emitting element, wherein the first layer and the second layer are in direct contact. Claim 12 In claim 10, the light-emitting element, wherein the second layer and the third layer are in direct contact. Claim 13 In claim 10, the light-emitting element in which the third layer and the hole transport layer are in direct contact. Claim 14 In claim 10, the above-mentioned first material is a light-emitting device comprising a conductive oxide material. Claim 15 In claim 10, the light-emitting element, wherein the second material comprises a metal material or a metal alloy material. Claim 16 In item 10, the light-emitting element, wherein the first material and the inorganic material are different from each other. Claim 17 In claim 10, the above-mentioned third layer is a light-emitting element composed of the above-mentioned inorganic material. Claim 18 An electronic device comprising a light-emitting element according to any one of claims 1 to 17. Claim 19 An electronic device according to claim 18, further comprising a thin-film transistor including a source electrode, a drain electrode, and an active layer, wherein the first electrode of the light-emitting element and the source electrode or drain electrode of the thin-film transistor are electrically connected to each other. Claim 20 An electronic device according to claim 18, further comprising a functional layer including a touchscreen layer, a polarizing layer, a color filter, a color conversion layer, or any combination thereof.

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