WO2010143276A1 - 共役系高分子共重合体を含む色変換膜、およびそれを用いた多色発光有機elデバイス - Google Patents
共役系高分子共重合体を含む色変換膜、およびそれを用いた多色発光有機elデバイス Download PDFInfo
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- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
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- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/31—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain
- C08G2261/314—Condensed aromatic systems, e.g. perylene, anthracene or pyrene
- C08G2261/3142—Condensed aromatic systems, e.g. perylene, anthracene or pyrene fluorene-based, e.g. fluorene, indenofluorene, or spirobifluorene
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- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/34—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain
- C08G2261/342—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain containing only carbon atoms
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
Definitions
- the present invention relates to a color conversion film formed using a conjugated polymer copolymer having high color conversion efficiency, which has fluorescence or phosphorescence in a solid thin film state and can be processed by a coating process. Furthermore, the present invention relates to a multicolor light emitting organic EL device formed using the color conversion film.
- organic EL devices have been actively researched for practical use. Since the organic EL element can realize a high current density at a low voltage, it is expected to realize high light emission luminance and light emission efficiency. In particular, the practical application of organic multi-color EL displays capable of high-definition multi-color or full-color display is expected.
- a method for making the organic EL display multi-colored or full-colored there is a method using a plurality of types of color filters that transmit light in a specific wavelength region (color filter method). When applying the color filter method, the organic EL element used emits multicolor light and includes the three primary colors of light (red (R), green (G), and blue (B)) in a balanced manner, so-called “white light”. "Is required to emit light.
- Japanese Patent Application Laid-Open No. 2000-243563 proposes a method of using a light emitting layer containing a plurality of light emitting dyes and simultaneously exciting the plurality of light emitting dyes (Patent Document 1). reference).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-243563 uses a light-emitting layer including a host light-emitting material and a guest light-emitting material, and excites and emits the host light-emitting material, and at the same time, performs energy transfer and light emission to the guest material.
- Patent Document 2 has been proposed (see Patent Document 2).
- the above-described multicolor light-emitting organic EL device relies on either simultaneous excitation of a plurality of types of light-emitting materials or energy transfer between the plurality of types of light-emitting materials.
- the emission intensity balance between the light emitting materials changes and the obtained hue may change as the driving time elapses or the energization current changes.
- Japanese Patent Application Laid-Open No. 2002-75643 and Japanese Patent Application Laid-Open No. 2003-217859 propose a color conversion method using a single color light emitting organic EL element and a color conversion film.
- the color conversion film used is a layer containing one or more color conversion substances that absorb light of short wavelengths and convert it into light of long wavelengths.
- a color conversion film capable of maintaining sufficient converted light intensity over a long period of time without increasing the thickness, it has an appropriate absorption and emission spectrum, and the fluorescence of the material.
- a material having a high quantum yield and hardly causing concentration quenching when thinned is desired.
- few materials have been found that can absorb ultraviolet light or blue light and convert it to green light with high efficiency, and also absorb blue light, which is useful for multicolor light-emitting organic EL devices using color conversion films.
- the appearance of such a material has been desired.
- a wet process for example, a coating process using a solution of the color conversion material after dissolving the color conversion material in an appropriate solvent is used.
- the color conversion material is required to be soluble.
- viscosity adjustment suitable for the apparatus to be used can be easily performed.
- JP 2000-26852 A has proposed a color conversion film containing a polymer material having a polyarylene vinylene group as a repeating unit (see Patent Document 6).
- Japanese Patent Laid-Open No. 2006-169265 proposes a color conversion film containing a polymer material having fluorene as a repeating unit (see Patent Document 7).
- Appl. Phys. Lett. 61, 2793 (1992) and Nature, 365, 628 (1992) polyarylene vinylene derivatives are used as light emitting materials for polymer EL devices because of their relatively high fluorescence quantum yield and high solubility. Research is widely conducted as candidates (see Non-Patent Documents 1 and 2).
- a color conversion film using a polymer material is also required to have a high fluorescence quantum yield.
- the polyarylene vinylene derivatives reported so far have a fluorescence quantum yield of about 10-40% in a thin film state, which is insufficient for use as a color conversion film.
- the present inventor has introduced a fluorene group repeating unit into a polyarylene vinylene derivative to form a copolymer, whereby the fluorescence quantum yield in a thin film state is reduced to about 60-70%. It has been found that it can be improved.
- the inventor has a structure in which a phenylene group is bonded to both ends of the fluorene group, and the phenylene group is introduced as a spacer for preventing an interaction between the fluorene group and the arylene vinylene group.
- the fluorescence quantum yield can be further increased.
- the fluorescence quantum yield in the thin film state reached 80-90%.
- the color conversion film of the first embodiment of the present invention has the following formula (1)
- Ar represents an arylene group or a divalent heterocyclic group
- R 1 and R 2 each independently represents a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an alkylsilyl group, an alkylamino group, or an aryl group.
- conjugated polymer copolymer having a green emission peak wavelength of 490 to 580 nm in a thin film state is represented by the following formula (2).
- R 1 , R 2 , R 3 , and R 4 are each independently a hydrogen atom, alkyl group, alkoxy group, alkylthio group, alkylsilyl group, alkylamino group, aryl group, aryloxy group, aryl An alkyl group, an arylalkoxy group, an arylalkenyl group, an arylalkynyl group, a monovalent heterocyclic group, an amino group, a nitro group, a halogen group or a cyano group, and n is an integer of 1 to 10,000) It may have a structure represented by The conjugated polymer copolymer represented by the formula (1) may have a weight average molecular weight of 1,000 to 500,000. Moreover, the color conversion film containing the conjugated polymer copolymer represented by the formula (1) may be formed by a coating process.
- the multicolor light-emitting organic EL device of the second embodiment of the present invention includes a pair of electrodes, at least one of which is a transparent electrode, an organic EL layer sandwiched between the pair of electrodes, and the color conversion of the first embodiment.
- the multicolor light-emitting organic EL device may be one in which the color conversion film and the transparent electrode are arranged in contact with each other.
- a conjugated polymer copolymer having a structure in which repeating units containing fluorene groups and arylene vinylene repeating units are alternately arranged and phenylene groups as spacers are inserted at both ends of the fluorene groups is used.
- the color conversion film of the present invention is a color conversion film composed of a single material, it is possible to maintain high color conversion efficiency without increasing the thickness.
- a color conversion film that can be formed by a low-cost coating process can be provided by selecting a polymer material that is soluble in a solvent.
- the multicolor light-emitting organic EL device formed using such a color conversion film has little viewing angle dependency, and the hue does not change with the passage of driving time or a change in energization current. Stable light emission characteristics can be exhibited.
- FIG. 1A is a diagram showing a configuration example of a multicolor light-emitting organic EL device of the present invention.
- FIG. 1B is a diagram showing a configuration example of the multicolor light-emitting organic EL device of the present invention.
- FIG. 1C is a diagram showing a configuration example of the multicolor light-emitting organic EL device of the present invention.
- FIG. 1D is a diagram showing a configuration example of a multicolor light-emitting organic EL device of the present invention.
- FIG. 2 is a diagram showing fluorescence spectra at an excitation wavelength of 470 nm in Examples and Comparative Examples 1 and 2.
- FIG. 1A is a diagram showing a configuration example of a multicolor light-emitting organic EL device of the present invention.
- FIG. 1B is a diagram showing a configuration example of the multicolor light-emitting organic EL device of the present invention.
- FIG. 1C is a diagram showing a configuration example of the multicolor
- the color conversion film of the first embodiment of the present invention has a structure in which repeating units containing fluorene groups and arylene vinylene repeating units are alternately arranged, and phenylene groups as spacers are inserted at both ends of the fluorene group. And a conjugated polymer copolymer having a green emission peak wavelength of 490 to 580 nm in a thin film state.
- the conjugated polymer copolymer used in the present invention is preferably a compound [arylene vinylene / (phenylene-fluorene-phenylene-vinylene) alternating copolymer] represented by the following general formula (1).
- Ar represents an arylene group or a divalent heterocyclic group.
- the arylene group is an atomic group obtained by removing two hydrogen atoms from a monocyclic aromatic hydrocarbon or a condensed polycyclic aromatic hydrocarbon.
- Preferred monocyclic fused aromatic hydrocarbons contain a substituted or unsubstituted benzene ring.
- Preferred condensed polycyclic aromatic hydrocarbons are aromatic compounds in which the number of carbon atoms contained in the ring is usually about 6 to 60, and 2 to 5 benzene rings are condensed.
- the condensed polycyclic aromatic hydrocarbon includes naphthalene, anthracene, phenanthrene, pyrene, perylene, naphthacene, pentacene, chrysene, coronene, and the like.
- Preferred fused polycyclic aromatic hydrocarbons include naphthalene or anthracene.
- R 1 and R 2 are each independently a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an alkylsilyl group, an alkylamino group, an aryl group, an aryloxy group, or an arylalkyl group.
- n is an integer of 1 to 10,000.
- conjugated polymer copolymers represented by the above formula (1) a conjugated polymer copolymer represented by the following formula (2) wherein Ar is a substituted or unsubstituted 1,4-phenylene group Is preferred.
- R 1 , R 2 , R 3 and R 4 are each independently a hydrogen atom, alkyl group, alkoxy group, alkylthio group, alkylsilyl group, alkylamino group, aryl group, aryloxy Represents a group, arylalkyl group, arylalkoxy group, arylalkenyl group, arylalkynyl group, monovalent heterocyclic group, amino group, nitro group, halogen group or cyano group.
- n is an integer of 1 to 10,000.
- the alkyl group in the present invention may be linear, branched or cyclic, and usually has 1 to 20 carbon atoms.
- the alkyl group in the present invention is a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, an i-butyl group, a t-butyl group, a pentyl group, a hexyl group, or a cyclohexyl group.
- alkyl groups include pentyl group, hexyl group, octyl group, 2-ethylhexyl group, decyl group, 3,7-dimethyloctyl group and the like.
- the alkoxy group in the present invention may be linear, branched or cyclic, and usually has 1 to 20 carbon atoms.
- Specific examples of the alkoxy group in the present invention include a methoxy group, an ethoxy group, an n-propyloxy group, an i-propyloxy group, an n-butoxy group, an i-butoxy group, a t-butoxy group, a pentyloxy group, and a hexyl group.
- alkoxy groups include a pentyloxy group, a hexyloxy group, an octyloxy group, a 2-ethylhexyloxy group, a decyloxy group, a 3,7-dimethyloctyloxy group, and the like.
- the alkylthio group in the present invention may be linear, branched or cyclic, and usually has 1 to 20 carbon atoms.
- Specific examples of the alkylthio group in the present invention include a methylthio group, an ethylthio group, an n-propylthio group, an i-propylthio group, an n-butylthio group, an i-butylthio group, a t-butylthio group, a pentylthio group, a hexylthio group, and a cyclohexyl.
- thio group Including thio group, heptylthio group, octylthio group, 2-ethylhexylthio group, nonylthio group, decylthio group, 3,7-dimethyloctylthio group, laurylthio group and the like.
- Preferred alkylthio groups include pentylthio group, hexylthio group, octylthio group, 2-ethylhexylthio group, decylthio group, 3,7-dimethyloctylthio group and the like.
- the alkylsilyl group in the present invention may be linear, branched or cyclic and usually has 1 to 20 carbon atoms.
- the alkylsilyl group in the present invention is a monoalkylsilyl group, a dialkylsilyl group, or a trialkyl group. It may be an alkylsilyl group.
- the alkylsilyl group includes a methylsilyl group, an ethylsilyl group, an n-propylsilyl group, an i-propylsilyl group, an n-butylsilyl group, an i-butylsilyl group, a t-butylsilyl group, a pentylsilyl group, and a hexylsilyl group.
- Preferred alkylsilyl groups include pentylsilyl, hexylsilyl, octylsilyl, 2-ethylhexylsilyl, decylsilyl, 3,7-dimethyloctylsilyl and the like.
- the alkylamino group in the present invention may be linear, branched or cyclic, and may be a monoalkylamino group or a dialkylamino group, and usually has 1 to 40 carbon atoms.
- Specific examples of the alkylamino group in the present invention include methylamino group, dimethylamino group, ethylamino group, diethylamino group, n-propylamino group, i-propylamino group, n-butylamino group, i-butylamino group.
- Preferred alkylamino groups include a pentylamino group, a hexylamino group, an octylamino group, a 2-ethylhexylamino group, a decylamino group, a 3,7-dimethyloctylamino group, and the like.
- the aryl group in the present invention usually has 6 to 60 carbon atoms.
- the aryl group in the present invention is a phenyl group, a C 1 -C 12 alkoxyphenyl group (C 1 -C 12 represents 1 to 12 carbon atoms, and the same applies hereinafter).
- C 1 -C 12 alkylphenyl group, 1-naphthyl group, 2-naphthyl group and the like are included.
- Preferred aryl groups include C 1 -C 12 alkoxyphenyl groups and C 1 -C 12 alkylphenyl groups.
- the aryloxy group in the present invention usually has 6 to 60 carbon atoms.
- the aryloxy group in the present invention specifically includes a phenoxy group, a C 1 -C 12 alkoxyphenoxy group, a C 1 -C 12 alkylphenoxy group, a 1-naphthyloxy group, a 2-naphthyloxy group, and the like.
- Preferred aryloxy groups include C 1 -C 12 alkoxyphenoxy groups, C 1 -C 12 alkylphenoxy groups.
- the arylalkyl group in the present invention usually has 7 to 60 carbon atoms.
- the arylalkyl group in the present invention includes a phenyl-C 1 -C 12 alkyl group, a C 1 -C 12 alkoxyphenyl-C 1 -C 12 alkyl group, and a C 1 -C 12 alkylphenyl-C 1- A C 12 alkyl group, a 1-naphthyl-C 1 -C 12 alkyl group, a 2-naphthyl-C 1 -C 12 alkyl group, and the like.
- Preferred arylalkyl groups include C 1 -C 12 alkoxyphenyl-C 1 -C 12 alkyl groups, C 1 -C 12 alkylphenyl-C 1 -C 12 alkyl groups.
- the arylalkoxy group in the present invention usually has 7 to 60 carbon atoms.
- the arylalkoxy group in the present invention includes a phenyl-C 1 -C 12 alkoxy group, a C 1 -C 12 alkoxyphenyl-C 1 -C 12 alkoxy group, and a C 1 -C 12 alkylphenyl-C 1- A C 12 alkoxy group, a 1-naphthyl-C 1 -C 12 alkoxy group, a 2-naphthyl-C 1 -C 12 alkoxy group, and the like.
- Preferred arylalkoxy groups include C 1 -C 12 alkoxyphenyl-C 1 -C 12 alkoxy groups, C 1 -C 12 alkylphenyl-C 1 -C 12 alkoxy groups.
- the arylamino group in the present invention usually has 6 to 60 carbon atoms.
- the arylamino group in the present invention may be either a monoarylamino group or a diarylamino group.
- Preferred arylalkoxy groups include C 1 -C 12 alkylphenylamino groups and di (C 1 -C 12 alkylphenyl) amino groups.
- the arylalkenyl group in the present invention usually has 8 to 60 carbon atoms.
- the arylalkenyl group in the present invention includes a phenyl-C 2 -C 12 alkenyl group, a C 1 -C 12 alkoxyphenyl-C 2 -C 12 alkenyl group, and a C 1 -C 12 alkenylphenyl-C 2- A C 12 alkenyl group, a 1-naphthyl-C 1 -C 12 alkenyl group, a 2-naphthyl-C 2 -C 12 alkenyl group, and the like.
- Preferred arylalkenyl groups include C 1 -C 12 alkoxyphenyl-C 2 -C 12 alkenyl groups, C 1 -C 12 alkylphenyl-C 2 -C 12 alkenyl groups.
- the arylalkynyl group in the present invention usually has 8 to 60 carbon atoms.
- the arylalkynyl group in the present invention is specifically a phenyl-C 2 -C 12 alkynyl group, a C 1 -C 12 alkoxyphenyl-C 2 -C 12 alkynyl group, a C 1 -C 12 alkenylphenyl-C 2- A C 12 alkynyl group, a 1-naphthyl-C 1 -C 12 alkynyl group, a 2-naphthyl-C 2 -C 12 alkynyl group, and the like.
- Preferred arylalkynyl group include C 1 ⁇ C 12 alkoxyphenyl -C 2 ⁇ C 12 alkynyl group, C 1 ⁇ C 12 alkylphenyl -C 2 ⁇ C 12 alkynyl groups.
- the monovalent heterocyclic group in the present invention usually has 4 to 60 carbon atoms.
- the monovalent heterocyclic group in the present invention specifically includes a thienyl group, a C 1 -C 12 alkyl thienyl group, a pyrrolyl group, a furyl group, a pyridyl group, a C 1 -C 12 alkyl pyridyl group, and the like.
- Preferred monovalent heterocyclic groups include thienyl groups, C 1 -C 12 alkyl thienyl groups, pyridyl groups, C 1 -C 12 alkyl pyridyl groups, and the like.
- the monovalent heterocyclic group refers to the remaining atomic group obtained by removing one hydrogen atom from a heterocyclic compound.
- the conjugated polymer copolymer used in the color conversion film of the present invention emits green light having a peak wavelength of 490 to 580 nm in a thin film state.
- the conjugated polymer copolymer used in the color conversion film of the present invention has a weight average molecular weight in the range of 1,000 to 500,000, more preferably in the range of 5,000 to 200,000.
- the component having a low polymerization degree is small, and it is desirable that no oligomer having a polymerization degree of 5 or less is contained.
- conjugated polymer copolymer represented by the general formula (2) (American-Dye-Source-inc.,; 125GE) are shown below.
- the compound represented by the chemical formula (1) has a very high fluorescence quantum yield of 80 to 90% in a thin film state, and is a material that can sufficiently withstand practical use as a color conversion film. It was found.
- the reason why the conjugated polymer copolymer having the chemical structure represented by the chemical formula (1) exhibits a high fluorescence quantum yield even in a thin film state can be considered as follows.
- excitons generated on a polymer chain lose their energy by light emission (light-emitting deactivation) or lose their energy by a route other than light emission (non-light-emitting deactivation). In order to improve the fluorescence quantum yield, it is necessary to reduce the proportion of the generated excitons that do not emit light.
- the first conceivable cause of nonluminous deactivation is deactivation based on energy transfer due to contact between different units included in the same polymer chain.
- Excitons generated on the polymer chain are thought to diffuse at high speed on the chain, but when a unit different from the unit that constitutes the site contacts the site where the exciton exists at that time The excitation energy is transferred to the different units, causing non-luminescent deactivation.
- the first effect exhibited by the chemical structure of the formula (1) is that rigidity is imparted to the polymer chain by introduction of a fluorene group.
- a material having a rigid polymer chain tends to have a high fluorescence quantum yield due to a low contact probability between different units.
- a material having a flexible and flexible polymer chain tends to be in contact with different units and tends to have a low fluorescence quantum yield.
- a fluorene group is a substituent having high rigidity, and it is known that introduction of a fluorene group has an effect of imparting rigidity to a polymer chain.
- the second effect exhibited by the chemical structure of the formula (1) is a concentration quenching suppression effect due to the introduction of a repeating unit containing a fluorene group.
- polyfluorene composed only of fluorene groups is a material that absorbs in the ultraviolet region and emits blue light.
- the arylene vinylene group in the alternating copolymer represented by the formula (1), it is considered that the arylene vinylene group mainly contributes to the absorption and emission (green) of the backlight (wavelength 470 nm). . That is, it is considered that the repeating unit containing a fluorene group functions as a spacer that separates the arylene vinylene groups and suppresses the interaction between them without contributing to light emission.
- the third effect exhibited by the chemical structure of the formula (1) is an effect of suppressing the interaction between the arylene vinylene group and the fluorene group by the phenylene group introduced at both ends of the fluorene group.
- the arylene vinylene group mainly contributes to the absorption and emission of the backlight.
- the arylene vinylene group and the fluorene group are directly bonded, a part of the excitation energy can be transferred to the adjacent fluorene group and deactivated without emitting light, thereby reducing the fluorescence quantum yield. There is sex.
- the compound represented by the chemical formula (1) has a structure in which a phenylene group is inserted between an arylene vinylene group and a fluorene group. Then, in the compound represented by the formula (1), this phenylene group serves as a spacer and suppresses the interaction between the arylene vinylene group and the fluorene group, and as a result, a high fluorescence quantum yield is achieved. It is considered a thing.
- the color conversion film of the present invention has a thickness of 2000 nm (2 ⁇ m) or less, preferably 100 to 2000 nm, more preferably 400 to 1000 nm.
- the fluorescence quantum yield of the conjugated polymer copolymer (compound of formula (1) or formula (2)) is maintained at a high level even in a thin film state.
- Such a thin film thickness has sufficient color conversion efficiency.
- the color conversion film of this embodiment can be produced by applying the conjugated polymer copolymer solution to an appropriate transparent support.
- a color conversion film may be produced by applying a solution of the conjugated polymer copolymer containing other elements to an appropriate transparent support.
- the material that can be used as the transparent support may be an inorganic material such as glass, and cellulose esters such as diacetylcellulose, triacetylcellulose (TAC), propionylcellulose, butyrylcellulose, and nitrocellulose; polyamide; polycarbonate Polyester such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polystyrene, polyolefin such as polyethylene, polypropylene, polymethylpentene, acrylic resin such as polymethyl methacrylate, polycarbonate, polysulfone, polyethersulfone, polyetherketone, poly It may be a polymer material such as etherimide; polyoxyethylene; norbornene resin.
- the transparent support may be rigid or flexible.
- the transparent support preferably has a transmittance of 80% or more with respect to visible light, and more preferably has a transmittance of 86% or more.
- the color conversion film of this embodiment is formed as a self-supporting film by applying a solution containing a conjugated polymer copolymer to a temporary support and peeling the obtained coating liquid from the temporary support. May be.
- the solution used for application may further include other elements described below.
- a temporary support body in addition to the above-mentioned transparent support body, opaque support bodies, such as a metal and ceramics, can also be used.
- the color conversion film of the present invention may contain an oxygen absorbent in an amount that does not adversely affect the color conversion characteristics. This is because the conjugated polymer copolymer represented by Formula (1) and the conjugated polymer copolymer represented by Formula (2) are oxidized when irradiated with light in the presence of oxygen. This is because the fluorescence quantum yield tends to decrease. Therefore, in the color conversion film of the present invention, by containing an oxygen absorber, it is possible to prevent the conjugated polymer copolymer from being oxidized and to prevent the fluorescence quantum yield of the color conversion film from being lowered.
- oxygen absorbent for example, metals such as iron, aluminum, lithium, sodium, zinc and barium, inorganic compounds such as cuprous oxide and ferrous chloride, and organic compounds such as hydroquinone and aniline can be used.
- the color conversion film of the present invention can be provided with an oxygen blocking film for blocking oxygen in the atmosphere on the surface.
- the oxygen blocking film is a film that sufficiently transmits the converted light of the color conversion film.
- the oxygen-blocking film can prevent oxidation of the conjugated polymer copolymer and prevent a decrease in the fluorescence quantum yield by blocking the intrusion of oxygen in the atmosphere into the color conversion film. it can.
- oxygen barrier film examples include a plastic film such as polycarbonate, polyethylene terephthalate, and nylon; an inorganic material film such as an aluminum foil, a silicon oxide film, and a silicon nitride film; or aluminum, silicon oxide, or chip on the plastic film.
- a plastic film such as polycarbonate, polyethylene terephthalate, and nylon
- an inorganic material film such as an aluminum foil, a silicon oxide film, and a silicon nitride film
- aluminum, silicon oxide, or chip on the plastic film examples of the oxygen barrier film.
- a composite film or the like in which silicon nitride is laminated can be used.
- the multicolor light-emitting organic EL device includes an organic EL element and the color conversion film according to the first embodiment, and at least one of the organic EL elements is transparent. And an organic EL layer sandwiched between the pair of electrodes.
- FIG. 1A to 1D show exemplary structures of the multicolor light-emitting organic EL device of the present invention.
- the device of FIG. 1A has a configuration of transparent substrate 10 / color conversion film 20 / organic EL element 30a, where the organic EL element 30a includes a transparent electrode 31, an organic EL layer 32, and a reflective electrode 33.
- the device in FIG. 1A is a so-called bottom emission type device that has a configuration in which the color conversion film 20 and the transparent electrode 31 are in contact with each other and emits light toward the transparent substrate 10.
- the device of FIG. 1B has a configuration of substrate 11 / organic EL element 30b / color conversion film 20.
- the organic EL element 30b includes the transparent electrode 31, the organic EL layer 32, and the reflective electrode 33 similarly to the element 30a, but the stacking order thereof is opposite.
- the device of FIG. 1B is a so-called top emission type device that has a configuration in which the color conversion film 20 and the transparent electrode 31 are in contact with each other and emits light to the opposite side of the substrate 11.
- one of the pair of electrodes is the transparent electrode 31, and the light (EL light) emitted from the organic EL layer 32 is reflected on the transparent electrode 31 directly or by reflection at the reflective electrode 33. Radiated in the direction and enters the color conversion film 20. Part of the EL light is absorbed by the conjugated polymer copolymer and emitted as light having different wavelength distributions (photoluminescence light, PL light). Then, it functions as an organic EL device that emits multicolor light by EL light and PL light that are not absorbed by the color conversion film 20.
- the device of FIG. 1C has a configuration of transparent substrate 10 / organic EL element 30c / color conversion film 20 / reflective layer 40, where organic EL element 30c includes first transparent electrode 31a, organic EL layer 32, and The second transparent electrode 31b is included.
- the device in FIG. 1C is a bottom emission type device.
- the device in FIG. 1D has a configuration of substrate 11 / reflection layer 40 / color conversion film 20 / organic EL element 30c.
- the device of FIG. 1D is a top emission type device.
- both of the pair of electrodes are the transparent electrodes 31 (a, b), and part of the EL light emitted from the organic EL layer 32 does not pass through the color conversion film 20. 1 to the outside (in the direction of the transparent substrate 10 in FIG. 1C, in the direction of the second transparent electrode 31b in FIG. 1D).
- the EL light part of the light directed toward the color conversion film 20 is absorbed by the color conversion film 20 and converted into PL light. Further, the light that has passed through the color conversion film 20 is reflected by the reflection layer 40, is incident on the color conversion film 20 again, undergoes wavelength distribution conversion, and further passes through the organic EL element 30c and is emitted to the outside.
- the color conversion film 20 is disposed in contact with the transparent electrode 31 (including the first and second transparent electrodes 31a and 31b). This arrangement is effective for minimizing the distance between the organic EL layer 32 and the color conversion film 20 and improving the incident efficiency of the EL light to the color conversion film 20 and at the same time reducing the viewing angle dependency. is there.
- the transparent substrate 10 and the substrate 11 have durability against conditions (solvent, temperature, etc.) used for forming the layer to be laminated and have excellent dimensional stability.
- the material of the transparent substrate 10 used in the bottom emission type configuration of FIGS. 1A and 1C may be an inorganic material such as glass, diacetyl cellulose, triacetyl cellulose (TAC), propionyl cellulose, butyryl cellulose, nitro.
- Cellulose ester such as cellulose; polyamide; polycarbonate; polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polybutylene terephthalate, etc. polyester; polystyrene; polyethylene, polypropylene, polymethylpentene, etc.
- the transparent substrate 10 may be rigid or flexible.
- the transparent substrate 10 preferably has a transmittance of 80% or more with respect to visible light, and more preferably has a transmittance of 86% or more.
- a metal, ceramic, or the like can be used in addition to the material that can be used for the transparent substrate 10 described above. .
- the transparent electrode 31 (including the first and second transparent electrodes 31a and 31b) preferably has a transmittance of 50% or more, more preferably 85% or more with respect to light having a wavelength of 400 to 800 nm.
- the transparent electrode 31 is made of ITO (In—Sn oxide), Sn oxide, In oxide, IZO (In—Zn oxide), Zn oxide, Zn—Al oxide, Zn—Ga oxide, or these It can be formed using a conductive transparent metal oxide in which a dopant such as F or Sb is added to the oxide.
- the transparent electrode 31 is formed using a vapor deposition method, a sputtering method, or a chemical vapor deposition (CVD) method, and preferably formed using a sputtering method.
- a transparent electrode 31 composed of a plurality of partial electrodes is required as will be described later, a conductive transparent metal oxide is uniformly formed over the entire surface, and then etched so as to give a desired pattern.
- the transparent electrode 31 composed of a plurality of partial electrodes may be formed.
- the transparent electrode 31 formed from the aforementioned material is suitable for use as an anode.
- the transparent electrode 31 when used as a cathode, it is desirable to improve the electron injection efficiency by providing a cathode buffer layer at the interface with the organic EL layer 32.
- a cathode buffer layer As a material for the cathode buffer layer, an alkali metal such as Li, Na, K, or Cs, an alkaline earth metal such as Ba or Sr, an alloy containing them, a rare earth metal, or a fluoride of these metals may be used. Yes, but not limited to them.
- the thickness of the cathode buffer layer can be appropriately selected in consideration of the driving voltage, transparency, and the like, but in a normal case, the thickness is preferably 10 nm or less.
- the organic EL layer 32 includes at least an organic light emitting layer and has a structure in which a hole injection layer, a hole transport layer, an electron transport layer, and / or an electron injection layer are interposed as necessary. Specifically, an organic EL element having the following layer structure is employed.
- anode / organic light emitting layer / cathode (2) Anode / hole injection layer / organic light emitting layer / cathode (3) Anode / organic light emitting layer / electron injection layer / cathode (4) Anode / hole injection layer / organic Light emitting layer / electron injection layer / cathode (5) Anode / hole transport layer / organic light emitting layer / electron injection layer / cathode (6) Anode / hole injection layer / hole transport layer / organic light emitting layer / electron injection layer / Cathode (7) Anode / hole injection layer / hole transport layer / organic light emitting layer / electron transport layer / electron injection layer / cathode In the above layer configuration, the anode and the cathode are respectively transparent electrodes 31 (first and second). Including the transparent electrodes 31a and 31b) or the reflective electrode 33.
- organic light-emitting layer materials for obtaining blue to blue-green light emission include fluorescent brighteners such as benzothiazole, benzimidazole, and benzoxazole, metal chelated oxonium compounds, and styrylbenzene.
- fluorescent brighteners such as benzothiazole, benzimidazole, and benzoxazole
- metal chelated oxonium compounds such as benzothiazole, benzimidazole, and benzoxazole
- metal chelated oxonium compounds such as benzoxazole
- styrylbenzene styrylbenzene
- Examples of the material for the electron transport layer include 2- (4-biphenyl) -5- (pt-butylphenyl) -1,3,4-oxadiazole (PBD), triazole derivatives, Triazine derivatives, phenylquinoxalines, aluminum quinolinol complexes (eg, Alq 3 ), and the like can be used.
- PBD 2- (4-biphenyl) -5- (pt-butylphenyl) -1,3,4-oxadiazole
- triazole derivatives Triazine derivatives
- phenylquinoxalines phenylquinoxalines
- aluminum quinolinol complexes eg, Alq 3
- an aluminum quinolinol complex doped with an alkali metal or an alkaline earth metal can be used in addition to the material for the electron transport layer.
- TPD As the material of the hole transport layer, TPD, N, N′-bis (1-naphthyl) -N, N′-diphenylbiphenylamine ( ⁇ -NPD), 4,4 ′, 4 ′′ -tris (N-3 Known materials including triarylamine materials such as -tolyl-N-phenylamino) triphenylamine (m-MTDATA) can be used as the material for the hole injection layer, such as phthalocyanines (copper phthalocyanine, etc.) Alternatively, indanthrene compounds can be used.
- the reflective electrode 33 is preferably formed using a highly reflective metal, amorphous alloy, or microcrystalline alloy.
- High reflectivity metals include Al, Ag, Mo, W, Ni, Cr, and the like.
- High reflectivity amorphous alloys include NiP, NiB, CrP, CrB, and the like.
- the highly reflective microcrystalline alloy includes NiAl and the like.
- the reflective electrode 33 may be used as a cathode or an anode. When the reflective electrode 33 is used as a cathode, the above-described cathode buffer layer may be provided at the interface between the reflective electrode 33 and the organic EL layer 32 to improve the efficiency of electron injection into the organic EL layer 32.
- an alkali metal such as lithium, sodium, or potassium, which is a material having a low work function, calcium, magnesium, or the like, which is a material having a low work function compared to the above-described high reflectivity metal, amorphous alloy, or microcrystalline alloy
- an alkaline earth metal such as strontium can be added and alloyed to improve electron injection efficiency.
- the conductive transparent metal oxide layer described above is provided at the interface between the reflective electrode 33 and the organic EL layer 32 to improve the efficiency of hole injection into the organic EL layer 32. May be.
- the reflective electrode 33 can be formed using any means known in the art such as vapor deposition (resistance heating or electron beam heating), sputtering, ion plating, laser ablation, etc., depending on the material used. . As will be described later, when a reflective electrode 33 composed of a plurality of partial electrodes is required, the reflective electrode 33 composed of a plurality of partial electrodes may be formed using a mask giving a desired shape.
- each of the pair of electrodes is formed from a plurality of parallel striped portions,
- An example is shown in which the stripe forming the electrode and the stripe forming the other electrode intersect with each other (preferably orthogonally). Therefore, by adopting the configuration as shown in the figure, these organic EL elements can perform matrix driving. That is, when a voltage is applied to a specific stripe of one electrode and a specific stripe of the other electrode, the organic EL layer 32 emits light at a portion where the stripes intersect.
- one electrode may be formed into a uniform planar electrode having no stripe pattern, and the other electrode may be patterned into a plurality of partial electrodes corresponding to each light emitting portion.
- active matrix driving by providing a plurality of switching elements corresponding to each light emitting section and connecting the switching elements one-to-one to the partial electrodes corresponding to each light emitting section. become.
- each of the pair of electrodes can be a uniform planar electrode.
- the reflective layer 40 uses the above-described highly reflective metal (such as Al, Ag, Mo, W, Ni, Cr), amorphous alloy (such as NiP, NiB, CrP, and CrB), and microcrystalline alloy (such as NiAl). It is preferable to be formed. Since the color conversion film 20 in the present invention is a thin film, a short circuit may be caused between the lower electrodes (between 31a) or between the upper electrodes (between 31b) via the reflective layer 40. In order to prevent a short circuit, an insulating layer may be provided between the reflective layer 40 and the color conversion film 20 or between the color conversion film 20 and the electrodes (between the lower electrodes 31a or the upper electrodes 31b).
- highly reflective metal such as Al, Ag, Mo, W, Ni, Cr
- amorphous alloy such as NiP, NiB, CrP, and CrB
- microcrystalline alloy such as NiAl
- the insulating layer is formed using a transparent insulating inorganic material such as TiO 2 , ZrO 2 , AlO x , AlN, SiN x having a refractive index close to that of the color conversion film 20 (preferably about 1.5 to 2.0). be able to.
- a transparent insulating inorganic material such as TiO 2 , ZrO 2 , AlO x , AlN, SiN x having a refractive index close to that of the color conversion film 20 (preferably about 1.5 to 2.0). be able to.
- the color conversion layer can be changed by changing the type of the conjugated polymer copolymer constituting the color conversion layer 20 or adjusting the film thickness of the color conversion layer 20.
- the amount of EL light absorbed at 20 can be adjusted.
- the EL device can emit light of any hue including white light.
- the multicolor light-emitting organic EL device of the present invention is used as a surface light source (backlight) for forming a display (monochrome or multicolor using a color filter in combination) by integrally forming a pair of electrodes.
- a pair of electrodes can be formed so as to be capable of matrix driving, and can be used as a monochrome display or a multi-color display using a color filter together.
- Example 1 As the transparent glass substrate, 1737 glass made by Corning, which was washed with pure water and dried and was 50 ⁇ 50 ⁇ 0.7 mm was used.
- the conjugated polymer copolymer exemplified in Formula (3) was dissolved in a mesitylene solvent to obtain a coating solution having a concentration of 1 wt%.
- the glass substrate was set on a spin coater, the coating solution was dropped, and the substrate was rotated to form a uniform film having a thickness of 100 ⁇ m. At this time, the substrate was rotated at a rotation speed of 800 rpm for 3 minutes.
- the weight average molecular weight of the conjugated polymer copolymer of this example measured using the GPC method, was 70,000 in terms of polystyrene.
- the color conversion film of Example 1 showed an extremely high fluorescence quantum yield of 90%.
- the fluorescence quantum yield of the color conversion film of Comparative Example 2 is 72%, which is about 20% lower than the value of Example 1.
- the fluorescence quantum yield of the color conversion film of Comparative Example 1 is 45%, which is a lower value.
- the fluorescence quantum yield of the color conversion film of Comparative Example 2 is higher than that of Comparative Example 1. This is because the introduction of fluorene groups imparts rigidity to the polymer chain (first effect) and the effect of the fluorene groups separating the arylene vinylene groups and suppressing the interaction between them (first effect). 2).
- the maximum emission wavelength of the color conversion film of Comparative Example 1 is located at 590 nm, whereas that of Comparative Example 2 is located at 510 nm, and the emission wavelength is shortened by the introduction of the fluorene group. I understand that. This suggests the existence of an interaction between the fluorene group and the arylene vinylene group. In contrast, the maximum emission wavelength of Example 1 is shifted to a wavelength longer than that of Comparative Example 2 and is located at 560 nm. That is, it is close to the value of Comparative Example 1.
- the color conversion film of the embodiment within the scope of the present invention has alternately repeating units containing fluorene groups and arylene vinylene repeating units, and phenylene groups as spacers are provided at both ends of the fluorene groups. It is characterized by containing a conjugated polymer copolymer having an inserted structure, and it is considered that due to this structural feature, concentration quenching is suppressed and high color conversion efficiency is realized.
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Abstract
Description
で表される構造を有し、薄膜状態で490-580nmの緑色発光ピーク波長を有する共役系高分子共重合体を含有することを特徴とする。ここで、前記式(1)で表される構造の共役系高分子共重合体は、下記式(2)
で表される構造を有するものであってもよい。また、前記式(1)で表される共役系高分子共重合体は、重量平均分子量が1000~50万であってもよい。また、前記式(1)で表される共役系高分子共重合体を含有する前記色変換膜は、塗布プロセスによって形成させたものであってもよい。
(1)陽極/有機発光層/陰極
(2)陽極/正孔注入層/有機発光層/陰極
(3)陽極/有機発光層/電子注入層/陰極
(4)陽極/正孔注入層/有機発光層/電子注入層/陰極
(5)陽極/正孔輸送層/有機発光層/電子注入層/陰極
(6)陽極/正孔注入層/正孔輸送層/有機発光層/電子注入層/陰極
(7)陽極/正孔注入層/正孔輸送層/有機発光層/電子輸送層/電子注入層/陰極
上記の層構成において、陽極および陰極は、それぞれ透明電極31(第1および第2透明電極31a、31bを含む)または反射電極33のいずれかである。
透明ガラス基板として、純水洗浄および乾燥した50×50×0.7mmのコーニング社製1737ガラスを用いた。式(3)に例示した、共役系高分子共重合体をメシチレン溶媒中に溶解させ、濃度が1wt%の塗布液を得た。スピンコーターに上記ガラス基板をセットし、該塗布液を滴下して、基板を回転させて膜厚100μmの均一な膜を形成した。この際に、基板を回転速度800rpmで3分間回転させた。GPC法を用いて測定した、本実施例の共役系高分子共重合体の重量平均分子量はポリスチレン換算で7万であった。
式(3)で表される共役系高分子共重合体に代えて、以下の化学式(4)で表される共役系高分子共重合体(MEH-PPV)を用いたことを除いて、実施例1と同様の方法を用いて、透明ガラス基板上に色変換膜を作製した。
式(3)で表される共役系共重合体に代えて、以下の化学式(5)で表される共役系高分子共重合体(フルオレン/MEH-フェニレン/ビニレン共重合体American Dye Source inc.,; 108GE)を用いた。
実施例1および比較例1,2にて作製した色変換膜に対して、積分球を用いて絶対蛍光量子収率(励起波長470nm)を測定した。得られた結果を第1表に示す。
実施例1および比較例1、2にて作製した色変換膜に対して、励起波長470nmにおける蛍光スペクトルを測定した。得られたスペクトルを図2に示す。
11 基板
20 色変換膜
30(a~c) 有機EL素子
31(a,b) 透明電極
32 有機EL層
33 反射電極
40 反射層
Claims (6)
- 前記共役系高分子共重合体の重量平均分子量が1000~50万であることを特徴とする請求項1に記載の色変換膜。
- 塗布プロセスによって形成されていることを特徴とする請求項1に記載の色変換膜。
- 少なくとも一方が透明電極である一対の電極と、前記一対の電極に挟持される有機EL層と、請求項1に記載の色変換膜とを含む多色発光有機ELデバイスであって、前記色変換膜は、2μm以下の膜厚を有することを特徴とする多色発光有機ELデバイス。
- 前記色変換膜と前記透明電極とが接触して配置されていることを特徴とする請求項5に記載の多色発光有機ELデバイス。
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PCT/JP2009/060585 WO2010143276A1 (ja) | 2009-06-10 | 2009-06-10 | 共役系高分子共重合体を含む色変換膜、およびそれを用いた多色発光有機elデバイス |
JP2010521641A JP4577458B1 (ja) | 2009-06-10 | 2009-06-10 | 共役系高分子共重合体を含む色変換膜、およびそれを用いた多色発光有機elデバイス |
US12/992,529 US8389985B2 (en) | 2009-06-10 | 2009-06-10 | Color conversion film containing a conjugated high molecular weight copolymer and multicolor light-emitting organic EL device including the same |
KR1020107023778A KR101029411B1 (ko) | 2009-06-10 | 2009-06-10 | 공역계 고분자 공중합체를 포함하는 색변환막 및 이를 이용한 다색 발광 유기 el 디바이스 |
CN2009801307512A CN102112518B (zh) | 2009-06-10 | 2009-06-10 | 包含共轭高分子量共聚物的色彩转换膜和使用该色彩转换膜的多色发光有机el器件 |
TW099118368A TWI397542B (zh) | 2009-06-10 | 2010-06-07 | A color conversion film containing a conjugated polymer copolymer, and a polychromatic organic EL device using the same |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000026852A (ja) * | 1998-07-09 | 2000-01-25 | Idemitsu Kosan Co Ltd | 色変換膜および発光装置 |
JP2000230172A (ja) * | 1998-12-09 | 2000-08-22 | Sharp Corp | 蛍光部材及びそれを用いた発光素子 |
JP2003013056A (ja) * | 2000-11-10 | 2003-01-15 | Sumitomo Chem Co Ltd | 高分子蛍光体およびそれを用いた高分子発光素子 |
JP2004362910A (ja) * | 2003-06-04 | 2004-12-24 | Sumitomo Chem Co Ltd | 色変換膜および発光装置 |
JP2009001788A (ja) * | 2007-05-23 | 2009-01-08 | Sumitomo Chemical Co Ltd | 高分子化合物及びその製造方法、並びに、その高分子化合物を用いた発光材料、液状組成物、薄膜、高分子発光素子、面状光源、表示装置、有機トランジスタ及び太陽電池 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5683823A (en) | 1996-01-26 | 1997-11-04 | Eastman Kodak Company | White light-emitting organic electroluminescent devices |
JP2000243563A (ja) | 1999-02-23 | 2000-09-08 | Stanley Electric Co Ltd | 有機発光素子 |
JP2002075643A (ja) | 2000-08-29 | 2002-03-15 | Tdk Corp | 有機elディスプレイパネルおよびそれに用いる有機el素子 |
TW541853B (en) * | 2000-11-10 | 2003-07-11 | Sumitomo Chemical Co | Polymeric fluorescent substance and polymer light-emitting device using the same |
JP2003217859A (ja) | 2002-01-21 | 2003-07-31 | Tdk Corp | Elパネル |
TW201235442A (en) | 2003-12-12 | 2012-09-01 | Sumitomo Chemical Co | Polymer and light-emitting element using said polymer |
JP4792738B2 (ja) | 2003-12-12 | 2011-10-12 | 住友化学株式会社 | 高分子化合物およびそれを用いた高分子発光素子 |
-
2009
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- 2009-06-10 JP JP2010521641A patent/JP4577458B1/ja active Active
-
2010
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000026852A (ja) * | 1998-07-09 | 2000-01-25 | Idemitsu Kosan Co Ltd | 色変換膜および発光装置 |
JP2000230172A (ja) * | 1998-12-09 | 2000-08-22 | Sharp Corp | 蛍光部材及びそれを用いた発光素子 |
JP2003013056A (ja) * | 2000-11-10 | 2003-01-15 | Sumitomo Chem Co Ltd | 高分子蛍光体およびそれを用いた高分子発光素子 |
JP2004362910A (ja) * | 2003-06-04 | 2004-12-24 | Sumitomo Chem Co Ltd | 色変換膜および発光装置 |
JP2009001788A (ja) * | 2007-05-23 | 2009-01-08 | Sumitomo Chemical Co Ltd | 高分子化合物及びその製造方法、並びに、その高分子化合物を用いた発光材料、液状組成物、薄膜、高分子発光素子、面状光源、表示装置、有機トランジスタ及び太陽電池 |
Non-Patent Citations (1)
Title |
---|
LIU, M.S. ET AL.: "Effect of Cyano Substituents on Electron Affinity and Electron-Transporting Properties of Conjugated Polymers", MACROMOLECULES, vol. 35, no. 9, 2002, pages 3532 - 3538, XP002336169, DOI: doi:10.1021/ma011790f * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012197410A (ja) * | 2011-03-10 | 2012-10-18 | Osaka Gas Chem Kk | 新規フルオレン化合物 |
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CN102112518B (zh) | 2013-02-27 |
JP4577458B1 (ja) | 2010-11-10 |
KR20110004858A (ko) | 2011-01-14 |
TWI397542B (zh) | 2013-06-01 |
CN102112518A (zh) | 2011-06-29 |
JPWO2010143276A1 (ja) | 2012-11-22 |
KR101029411B1 (ko) | 2011-04-14 |
TW201114798A (en) | 2011-05-01 |
US8389985B2 (en) | 2013-03-05 |
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