WO2023068824A1 - 신규한 화합물 및 이를 이용한 유기 발광 소자 - Google Patents
신규한 화합물 및 이를 이용한 유기 발광 소자 Download PDFInfo
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- WO2023068824A1 WO2023068824A1 PCT/KR2022/015992 KR2022015992W WO2023068824A1 WO 2023068824 A1 WO2023068824 A1 WO 2023068824A1 KR 2022015992 W KR2022015992 W KR 2022015992W WO 2023068824 A1 WO2023068824 A1 WO 2023068824A1
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- 239000008096 xylene Substances 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- HTPBWAPZAJWXKY-UHFFFAOYSA-L zinc;quinolin-8-olate Chemical compound [Zn+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 HTPBWAPZAJWXKY-UHFFFAOYSA-L 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- C07F9/53—Organo-phosphine oxides; Organo-phosphine thioxides
- C07F9/5325—Aromatic phosphine oxides or thioxides (P-C aromatic linkage)
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic System
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/50—Organo-phosphines
- C07F9/5022—Aromatic phosphines (P-C aromatic linkage)
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
- H10K50/171—Electron injection layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
- H10K50/165—Electron transporting layers comprising dopants
Definitions
- the present invention relates to a novel compound and an organic light emitting device including the same.
- the organic light emitting phenomenon refers to a phenomenon in which electrical energy is converted into light energy using an organic material.
- An organic light emitting device using an organic light emitting phenomenon has a wide viewing angle, excellent contrast, and a fast response time, and has excellent luminance, driving voltage, and response speed characteristics, and thus many studies are being conducted.
- An organic light emitting device generally has a structure including an anode, a cathode, and an organic material layer between the anode and the cathode.
- the organic material layer is often composed of a multi-layered structure composed of different materials, and may include, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
- a voltage is applied between the two electrodes, holes are injected from the anode and electrons from the cathode are injected into the organic material layer, and when the injected holes and electrons meet, excitons are formed. When it falls back to the ground state, it glows.
- the present invention provides a novel organic light emitting device material that can be used in an organic light emitting device and can be used in a solution process at the same time.
- Patent Document 1 Korean Patent Publication No. 10-2000-0051826
- the present invention relates to a novel compound and an organic light emitting device including the same.
- the present invention provides a compound represented by Formula 1 below:
- X is O or S
- Each R 1 is independently C 1-60 alkyl, cyano-substituted C 1-60 alkyl, halogen, nitro, or cyano, or two adjacent R 1s are bonded to a substituted or unsubstituted C 6-60 aromatic form a ring,
- n1 is 1 or 2;
- R 2 is hydrogen or deuterium
- R 3 is hydrogen, deuterium, or halogen.
- the present invention is a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers includes the compound represented by Chemical Formula 1. do.
- the compound represented by Formula 1 described above can be used as a material for an organic layer of an organic light emitting device, and can also be used in a solution process, and can improve efficiency, low driving voltage and/or lifespan characteristics in an organic light emitting device. there is.
- FIG. 1 shows an example of an organic light emitting device composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
- FIG. 2 is composed of a substrate (1), an anode (2), a hole injection layer (5), a hole transport layer (6), a light emitting layer (7), an electron transport layer (8), an electron injection layer (9) and a cathode (4).
- An example of an organic light emitting device is shown.
- substituted or unsubstituted means deuterium; halogen group; cyano group; nitro group; hydroxy group; carbonyl group; ester group; imide group; amino group; phosphine oxide group; alkoxy group; aryloxy group; Alkyl thioxy group; Arylthioxy group; an alkyl sulfoxy group; aryl sulfoxy group; silyl group; boron group; an alkyl group; cycloalkyl group; alkenyl group; aryl group; aralkyl group; Aralkenyl group; Alkyl aryl group; Alkylamine group; Aralkylamine group; heteroarylamine group; Arylamine group; Arylphosphine group; Or substituted or unsubstituted with one or more substituents selected from the group consisting of heteroaryl containing at least one of N, O, and S atoms, or substituted or unsubstituted
- a substituent in which two or more substituents are connected may be a biphenyl group. That is, the biphenyl group may be an aryl group or may be interpreted as a substituent in which two phenyl groups are connected.
- the number of carbon atoms of the carbonyl group is not particularly limited, but is preferably 1 to 40 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
- the ester group may be substituted with an aryl group having 6 to 25 carbon atoms or a straight-chain, branched-chain or cyclic chain alkyl group having 1 to 25 carbon atoms in the ester group.
- it may be a compound of the following structural formula, but is not limited thereto.
- the number of carbon atoms of the imide group is not particularly limited, but is preferably 1 to 25 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
- the silyl group is specifically a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, a phenylsilyl group, and the like. but not limited to
- the boron group specifically includes a trimethyl boron group, a triethyl boron group, a t-butyldimethyl boron group, a triphenyl boron group, a phenyl boron group, but is not limited thereto.
- examples of the halogen group include fluorine, chlorine, bromine or iodine.
- the alkyl group may be straight-chain or branched-chain, and the number of carbon atoms is not particularly limited, but is preferably 1 to 40. According to one embodiment, the number of carbon atoms of the alkyl group is 1 to 20. According to another exemplary embodiment, the number of carbon atoms of the alkyl group is 1 to 10. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms.
- alkyl group examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n -pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl , n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl
- the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to one embodiment, the alkenyl group has 2 to 20 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 6 carbon atoms.
- Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-( naphthyl-1-yl)vinyl-1-yl, 2,2-bis(diphenyl-1-yl)vinyl-1-yl, stilbenyl group, styrenyl group, etc., but is not limited thereto.
- the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to an exemplary embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the number of carbon atoms of the cycloalkyl group is 3 to 20. According to another exemplary embodiment, the number of carbon atoms of the cycloalkyl group is 3 to 6.
- the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the number of carbon atoms of the aryl group is 6 to 30. According to one embodiment, the number of carbon atoms of the aryl group is 6 to 20.
- the aryl group may be a phenyl group, a biphenyl group, a terphenyl group, etc. as a monocyclic aryl group, but is not limited thereto.
- the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthrenyl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, etc., but is not limited thereto.
- the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure.
- the fluorenyl group is substituted, etc.
- it is not limited thereto.
- heteroaryl is a heteroaryl containing at least one of O, N, Si, and S as a heterogeneous element, and the number of carbon atoms is not particularly limited, but preferably has 2 to 60 carbon atoms.
- the heteroaryl include xanthene, thioxanthen, thiophene, furan, pyrrole, imidazole, thiazole, oxazole, oxadiazole, triazole, pyridyl, bipyridyl, Pyrimidyl group, triazine group, acridyl group, pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyridopyrimidinyl group, pyridopyrazinyl group, pyrazino Pyrazinyl group, isoquinoline group, indole group, carbazo
- an aralkyl group, an aralkenyl group, an alkylaryl group, an arylamine group, and an aryl group among arylsilyl groups are the same as the examples of the aryl group described above.
- the alkyl group among the aralkyl group, the alkylaryl group, and the alkylamine group is the same as the examples of the above-mentioned alkyl group.
- the description of the above-described heteroaryl may be applied to the heteroaryl among heteroarylamines.
- the alkenyl group among the aralkenyl groups is the same as the examples of the alkenyl group described above.
- the description of the aryl group described above may be applied except that the arylene is a divalent group.
- the description of heteroaryl described above may be applied except that the heteroarylene is a divalent group.
- the hydrocarbon ring is not a monovalent group, and the description of the aryl group or cycloalkyl group described above may be applied, except that the hydrocarbon ring is formed by combining two substituents.
- the heterocyclic group is not a monovalent group, and the description of the above-described heteroaryl may be applied, except that it is formed by combining two substituents.
- the present invention provides a compound represented by Formula 1 above.
- Formula 1 is represented by any one of Formulas 1-1 to 1-4 below:
- each R 1 is independently C 1-60 alkyl, C 1-60 alkyl substituted with cyano, halogen, nitro, or cyano;
- R 2 is hydrogen or deuterium
- R 3 is hydrogen, deuterium, or halogen
- R 4 is hydrogen, deuterium, or -CO-(C 1-60 alkyl).
- each R 1 is independently selected from hydrogen, deuterium, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tertbutyl, cyanomethyl, cyanoethyl, cyanopropyl, cyanoisopropyl, cyanoalkyl. norbutyl, cyanoisobutyl, cyanotertbutyl, fluoro, chloro, nitro, or cyano.
- R 3 is hydrogen or deuterium.
- R4 is hydrogen, deuterium, or methylcarbonyl.
- the present invention provides a method for producing a compound represented by Formula 1, such as the following Reaction Scheme 1, for example:
- Step 1 is a Grignard reaction, and Mg (magnesium) is used, and the manufacturing method may be more specific in Preparation Examples to be described later.
- Step 2 is a reaction of reacting the product of Step 1 with an organolithium agent.
- An organolithium compound that can be used in the above reaction can be appropriately selected according to the compound to be prepared, and lithium hydride can be used as an example.
- the manufacturing method may be more specific in Preparation Examples to be described later.
- the organic layer containing the compound according to the present invention can be formed using various methods such as a vacuum deposition method and a solution process, and the solution process will be described in detail below.
- the compound according to the present invention may form an organic material layer of an organic light emitting device, particularly an electron transport layer or an electron injection layer, through a solution process.
- the present invention provides a coating composition comprising the above-described compound and a solvent according to the present invention.
- the solvent is not particularly limited as long as it can dissolve or disperse the compound according to the present invention, and examples thereof include chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o -Chlorinated solvents such as dichlorobenzene; ether solvents such as tetrahydrofuran and dioxane; aromatic hydrocarbon solvents such as toluene, xylene, trimethylbenzene, and mesitylene; aliphatic hydrocarbon-based solvents such as cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, and n-decane; Ketone solvents, such as acetone, methyl ethyl ketone, and cyclohexanone; Ester solvents, such as eth
- alcohol and its derivatives alcohol solvents such as methanol, ethanol, propanol, isopropanol, and cyclohexanol; sulfoxide solvents such as dimethyl sulfoxide; and amide solvents such as N-methyl-2-pyrrolidone and N,N-dimethylformamide; benzoate solvents such as butyl benzoate and methyl-2-methoxy benzoate; tetralin; Solvents, such as 3-phenoxytoluene, are mentioned.
- the above-mentioned solvent may be used alone or in combination of two or more solvents.
- toluene may be used as the solvent.
- the viscosity of the coating composition is preferably 1 cP or more. In addition, considering the ease of coating of the coating composition, the viscosity of the coating composition is preferably 10 cP or less.
- the concentration of the compound according to the present invention in the coating composition is preferably 0.1 wt/v% or more. In addition, the concentration of the compound according to the present invention in the coating composition is preferably 20 wt / v% or less so that the coating composition can be coated optimally.
- the present invention provides a method of forming a light emitting layer using the coating composition described above. Specifically, coating the light emitting layer according to the present invention described above on the anode or on the hole transport layer formed on the anode by a solution process; and heat-treating the coated coating composition.
- the solution process uses the above-described coating composition according to the present invention, and includes spin coating, dip coating, doctor blading, inkjet printing, screen printing, spraying, roll coating, etc., but is not limited thereto.
- the heat treatment temperature is preferably 150 to 230 °C.
- the heat treatment time is 1 minute to 3 hours, more preferably 10 minutes to 1 hour.
- the heat treatment is preferably performed in an inert gas atmosphere such as argon or nitrogen.
- the present invention provides an organic light emitting device including the compound represented by Formula 1 above.
- the present invention provides a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers includes the compound represented by Chemical Formula 1. do.
- the organic material layer of the organic light emitting device of the present invention may have a single-layer structure, or may have a multi-layer structure in which two or more organic material layers are stacked.
- the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like as organic layers.
- the structure of the organic light emitting device is not limited thereto and may include fewer organic layers.
- the organic material layer may include an electron transport layer or an electron injection layer, and the electron transport layer or electron injection layer includes the compound represented by Chemical Formula 1.
- the organic light emitting device according to the present invention may be a normal type organic light emitting device in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate.
- the organic light emitting device according to the present invention may be an organic light emitting device of an inverted type in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.
- FIGS. 1 and 2 the structure of an organic light emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 and 2 .
- Chemical Formula 1 shows an example of an organic light emitting device composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
- the compound represented by Chemical Formula 1 may be included in the light emitting layer.
- the compound represented by Formula 1 may be included in the electron transport layer or the electron injection layer.
- the organic light emitting device according to the present invention may be manufactured using materials and methods known in the art, except that at least one of the organic layers includes the compound represented by Chemical Formula 1. Also, when the organic light emitting device includes a plurality of organic material layers, the organic material layers may be formed of the same material or different materials.
- the organic light emitting device may be manufactured by sequentially stacking an anode, an organic material layer, and a cathode on a substrate. At this time, using a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation, depositing a metal or a metal oxide having conductivity or an alloy thereof on the substrate to form an anode After forming an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer thereon, and depositing a material that can be used as a cathode thereon, it can be prepared.
- PVD physical vapor deposition
- an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material on a substrate from a cathode material (WO 2003/012890).
- the manufacturing method is not limited thereto.
- the first electrode is an anode and the second electrode is a cathode, or the first electrode is a cathode and the second electrode is an anode.
- the cathode material a material having a high work function is generally preferred so that holes can be smoothly injected into the organic material layer.
- the cathode material include metals such as vanadium, chromium, copper, zinc, and gold or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); combinations of metals and oxides such as ZnO:Al or SnO 2 :Sb; conductive compounds such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDOT), polypyrrole, and polyaniline; and the like, but are not limited thereto.
- the cathode material is preferably a material having a small work function so as to easily inject electrons into the organic material layer.
- Specific examples of the anode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, or alloys thereof; There are multi-layered materials such as LiF/Al or LiO 2 /Al, but are not limited thereto.
- the organic light emitting device may include a hole transport layer between the electron blocking layer and the anode.
- the hole transport layer is a layer that receives holes from the hole injection layer and transports the holes to the light emitting layer.
- a hole transport material a material capable of receiving holes from the anode or the hole injection layer and transferring them to the light emitting layer is a material having high hole mobility. This is suitable
- hole transport material examples include, but are not limited to, arylamine-based organic materials, conductive polymers, and block copolymers having both conjugated and non-conjugated parts.
- the organic light emitting device may further include a hole injection layer between the anode and the hole transport layer, if necessary.
- the hole injection layer is a layer for injecting holes from the electrode, and the hole injection material has the ability to transport holes and has a hole injection effect at the anode, an excellent hole injection effect for the light emitting layer or the light emitting material, and generated in the light emitting layer A compound that prevents migration of excitons to the electron injecting layer or electron injecting material and has excellent thin film formation ability is preferred.
- the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the anode material and the HOMO of the surrounding organic layer.
- the hole injection material include metal porphyrins, oligothiophenes, arylamine-based organic materials, hexanitrilehexaazatriphenylene-based organic materials, quinacridone-based organic materials, and perylene-based organic materials. of organic matter, anthraquinone, and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.
- the organic light emitting device may include an electron transport layer between the light emitting layer and the cathode.
- the electron transport layer is a layer that receives electrons from the cathode or an electron injection layer formed on the cathode, transports electrons to the light emitting layer, and suppresses the transfer of holes in the light emitting layer.
- an electron transport material electrons are well injected from the cathode.
- a material that can be received and transferred to the light emitting layer a material having high electron mobility is suitable.
- the electron transport material include Al complexes of 8-hydroxyquinoline; Complexes containing Alq 3 ; organic radical compounds; hydroxyflavone-metal complexes and the like, but are not limited thereto.
- the electron transport layer can be used with any desired cathode material as used according to the prior art.
- suitable cathode materials are conventional materials having a low work function followed by a layer of aluminum or silver. Specifically cesium, barium, calcium, ytterbium and samarium, followed in each case by a layer of aluminum or silver.
- the organic light emitting device may further include an electron injection layer between the electron transport layer and the cathode, if necessary.
- the electron injection layer is a layer for injecting electrons from an electrode, has the ability to transport electrons, has an excellent electron injection effect from a cathode, an excellent electron injection effect for a light emitting layer or a light emitting material, and injects holes of excitons generated in the light emitting layer. It is preferable to use a compound that prevents migration to a layer and has excellent thin film forming ability.
- materials that can be used as the electron injection layer include fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preore nylidene methane, anthrone, etc. and their derivatives, metal complex compounds, nitrogen-containing 5-membered ring derivatives, etc., but are not limited thereto.
- Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis(8-hydroxyquinolinato)zinc, bis(8-hydroxyquinolinato)copper, bis(8-hydroxyquinolinato)manganese, Tris(8-hydroxyquinolinato) aluminum, tris(2-methyl-8-hydroxyquinolinato) aluminum, tris(8-hydroxyquinolinato) gallium, bis(10-hydroxybenzo[h] Quinolinato) beryllium, bis(10-hydroxybenzo[h]quinolinato)zinc, bis(2-methyl-8-quinolinato)chlorogallium, bis(2-methyl-8-quinolinato)( There are o-cresolato) gallium, bis(2-methyl-8-quinolinato)(1-naphtolato)aluminum, and bis(2-methyl-8-quinolinato)(2-naphtolato)gallium. Not limited to this.
- inorganic compounds or polymer compounds such as quantum dots may be further included in the light emitting layer, the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer.
- the quantum dot may be, for example, a colloidal quantum dot, an alloy quantum dot, a core-shell quantum dot, or a core quantum dot.
- An element belonging to groups 2 and 16, an element belonging to groups 13 and 15, an element belonging to groups 13 and 17, an element belonging to groups 11 and 17, or an element belonging to groups 14 and 17 It may be a quantum dot containing elements belonging to group 15, such as cadmium (Cd), selenium (Se), zinc (Zn), sulfur (S), phosphorus (P), indium (In), tellurium (Te), lead Quantum dots including elements such as (Pb), gallium (Ga), and arsenic (As) may be used.
- the organic light emitting device according to the present invention may be a bottom emission device, a top emission device, or a double-sided light emitting device, and in particular, may be a bottom emission device requiring relatively high light emitting efficiency.
- the compound according to the present invention may be included in an organic solar cell or an organic transistor in addition to an organic light emitting device.
- a glass substrate coated with indium tin oxide (ITO) to a thickness of 500 ⁇ was put in distilled water in which detergent was dissolved and washed with ultrasonic waves.
- ITO indium tin oxide
- a product of Fischer Co. was used as a detergent
- distilled water filtered through a second filter of a product of Millipore Co. was used as distilled water.
- ultrasonic cleaning was performed twice with distilled water for 10 minutes.
- ultrasonic cleaning was performed with solvents such as isopropyl and acetone, and after drying, the substrate was cleaned for 5 minutes and transported to a glove box.
- a hole transport layer having a thickness of 1000 ⁇ .
- spin-coating 2000 rpm
- a coating composition in which the following compound A and the following compound Dopant (weight ratio of 98:2) were dissolved in cyclohexanone at 2 wt% and heat-treated at 145 ° C. for 15 minutes to obtain a thickness of 400 ⁇ of the light emitting layer was formed.
- the aluminum deposition rate was maintained at 2 ⁇ /sec, and the vacuum level during deposition was maintained at 2 ⁇ 10 -7 to 5 ⁇ 10 -8 torr.
- An organic light emitting device was manufactured in the same manner as in Experimental Example 1, except that the compound shown in Table 1 was used instead of Compound 1.
- An organic light emitting device was manufactured in the same manner as in Experimental Example 1, except that Compound C1 (LiQ; 8-Quinolinolato Lithium), Compound C2, and Compound C3 were used instead of Compound 1.
- the driving voltage, current efficiency, and lifetime at a current density of 10 mA/cm 2 were measured, and the results are shown in Table 1 below.
- the lifetime T90 means the time required for the luminance to decrease from the initial luminance (500 nit) to 90%.
- substrate 2 anode
Abstract
Description
화합물 | 구동 전압 (V@10mA/cm2) |
전류 효율 (cd/A@10mA/cm2) |
수명(hr) (T90@500 nit) |
|
실험예 1 | 화합물 1 | 5.78 | 5.89 | 47 |
실험예 2 | 화합물 2 | 5.64 | 5.93 | 65 |
실험예 3 | 화합물 3 | 6.09 | 5.26 | 42 |
실험예 4 | 화합물 4 | 5.84 | 5.69 | 43 |
실험예 5 | 화합물 5 | 5.71 | 5.85 | 54 |
비교실험예 1 | 화합물 C1 | 6.41 | 4.78 | 25 |
비교실험예 2 | 화합물 C2 | 6.04 | 5.47 | 40 |
비교실험예 3 | 화합물 C3 | 6.34 | 5.35 | 27 |
Claims (7)
- 제1항에 있어서,R1은 각각 독립적으로, 수소, 중수소, 메틸, 에틸, 프로필, 이소프로필, 부틸, 이소부틸, 터트부틸, 시아노메틸, 시아노에틸, 시아노프로필, 시아노이소프로필, 시아노부틸, 시아노이소부틸, 시아노터트부틸, 플루오로, 클로로, 니트로, 또는 시아노인,화합물.
- 제1항에 있어서,R3는 수소, 또는 중수소인,화합물.
- 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 제1항 내지 제5항 중 어느 하나의 항에 따른 화합물을 포함하는 것인, 유기 발광 소자.
- 제6항에 있어서,상기 화합물을 포함하는 유기물층은 전자수송층 또는 전자주입층인,유기 발광 소자.
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KR20140112494A (ko) * | 2011-11-30 | 2014-09-23 | 노발레드 게엠베하 | 유기 전자 디바이스 |
KR20160102528A (ko) * | 2013-12-23 | 2016-08-30 | 노발레드 게엠베하 | 포스페핀 매트릭스 화합물을 포함하는 반도전성 물질 |
KR20190005761A (ko) * | 2017-07-07 | 2019-01-16 | 노발레드 게엠베하 | 정공 주입층 및 영가 금속을 함유하는 전자 주입층을 포함하는 유기 전계발광 장치 |
KR20200103053A (ko) * | 2017-12-22 | 2020-09-01 | 노발레드 게엠베하 | 반도전성 물질, 이를 제조하는 방법 및 전자 디바이스 |
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2022
- 2022-10-20 CN CN202280043846.6A patent/CN117529485A/zh active Pending
- 2022-10-20 EP EP22884046.8A patent/EP4342902A1/en active Pending
- 2022-10-20 WO PCT/KR2022/015992 patent/WO2023068824A1/ko active Application Filing
- 2022-10-20 KR KR1020220135390A patent/KR20230056614A/ko active Search and Examination
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KR20000051826A (ko) | 1999-01-27 | 2000-08-16 | 성재갑 | 신규한 착물 및 그의 제조 방법과 이를 이용한 유기 발광 소자 |
WO2003012890A2 (de) | 2001-07-20 | 2003-02-13 | Novaled Gmbh | Lichtemittierendes bauelement mit organischen schichten |
KR20050015811A (ko) * | 2003-08-07 | 2005-02-21 | 삼성에스디아이 주식회사 | 이리듐 화합물 및 이를 채용한 유기 전계 발광 소자 |
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KR20200103053A (ko) * | 2017-12-22 | 2020-09-01 | 노발레드 게엠베하 | 반도전성 물질, 이를 제조하는 방법 및 전자 디바이스 |
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EP4342902A1 (en) | 2024-03-27 |
KR20230056614A (ko) | 2023-04-27 |
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