31results about How to "Improve light color purity" patented technology

The invention discloses a rare-earth nanometer metasilicate red fluorophor and the method for preparation. It contains the following setups: dissolving sensitizer activator substrate yttrium oxide in norbiline (or azotic acid), pressure-reduced distilling to eliminate water and excess acid, adding alcohol to prepare clear and transparent solution, and adding substrate silicon material to prepare transparent sol, pressure-reduced distilling to eliminate alcohol and acquiring powder solid, and adglutinating in 550-750 Deg. C by 2-4 hours to prepare the product. It prepares rare-earth nanometer red fluorescent powder in a low temperature (600 Deg. C) and a short time (3 hours), the average grain diameter being about 60-80 nm, the luminous intensity strong, chemical and optical property stable, the material easily obtained and cheap. Chemical expression formula of the rare-earth nanometer red fluorescent powder is as following: (YxSiy0z: Euj, Mn.

The invention discloses a color filter, a display panel and a display device. The color filter is divided into a plurality of filter zones in different colors. The color filter comprises a metal grating and a planar optical waveguide arranged successively in the outgoing direction of the light wherein the metal grating comprises a plurality of grating periods extending in the same direction, and the grating periods corresponding to the filter zones in different colors share different widths. The filter lengths of the filter zones lengthen along with increase in the widths of the grating periods corresponding to the filter zones. According to the invention, through the change in the widths of the grating periods by the metal grating, it is possible to realize the light filtering of different colors, and the planar optical waveguide performs the filtering for a second time to the already filtered light in different colors so that the frequency spectrum half-peak width of the light in different colors becomes narrow, that the purity of light color is increased, and that the color saturation of the colors is increased. Therefore, the color display contrast is increased in display.

The invention discloses a display panel, a preparing method thereof and a display device. The display panel comprises a substrate body, multiple micro LEDs, multiple quantum dot thin films and an encapsulation layer; the display panel further comprises multiple pixel areas, the substrate body in each pixel area is provided with the corresponding micro LED, and the quantum dot thin films are arranged in at least part of the pixel areas, and cover the micro LEDs in the same pixel area; the encapsulation layer is opposite to the substrate body and covers the quantum dot thin films in the pixel areas. By means of the display panel, the preparing method thereof and the display device, the thickness of the display panel is reduced, and thinning of the display panel is facilitated; moreover, an ink-jet printing technology is adopted for preparing the quantum dot thin films, the preparing technology is simple, and the preparing technology of the display panel can be simplified; besides, the display panel is prepared based on attributes of quantum dots, and therefore, the display panel has higher optical color purity, wider color gamut and longer service life.

The invention discloses an organic electroluminescence device. The organic electroluminescence device comprises a glass substrate, a scattering layer, a positive pole, a hole-injection layer, a hole-transmission layer, a light-emitting layer, an electronic transmission layer, an electronic injection layer and a negative pole which are sequentially overlapped, wherein the scattering layer comprises a metal oxide layer, a light-emitting material layer and an iron salt layer; the HOMO energy level of the material of the metal oxide layer is between -5.2 eV and -6.0 eV; the material of the light-emitting layer is selected from one and more of 4-(dicyanomethyl)-2-butyl-6-(1,1,7,7-tetramethyljulolidine-9-ethenyl)-4H-pyran, 9,10-di-beta-naphthyl anthracene, 4,4'-di(9-ethyl-3-vinylcarbazole)-1-1'-biphenyl and 8-hydroxyquinoline aluminum; the material of the iron salt layer is selected from one and more of iron chloride, iron bromide and iron sulfide. The organic electroluminescence device is relatively high in light-emitting efficiency. The invention also provides a manufacturing method for the organic electroluminescence device.

The invention provides an OLED display panel. The OLED display panel comprises a substrate, a light emitting layer and an encapsulating layer. The light emitting layer is arranged on the substrate. The encapsulating layer covers the surface of the light emitting layer. The light emitting layer comprises multiple pixel units which are arranged in an array manner. The OLED display panel also comprises at least one light extraction unit. The light extraction units are arranged in the encapsulating layer and correspond to the pixel units. According to the invention, the OLED display panel comprises at least one light extraction unit; the light extraction units are arranged in the encapsulating layer and correspond to the pixel units; and by increasing the light extraction units, light extraction efficiency can be improved, so photochromic purity is improved, displaying brightness is improved and service lifetime in light emitting is prolonged.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a first light emitting material layer, a metallic oxide doped layer and a second light emitting material layer; the first light emitting material layer and the second light emitting material layer are made of a same material selected from at least one of 4-(dinitrile methyl)-2-butyl-6-(1,1,7,7-tetramethyljulolidine-9-vinyl)-4H-pyran, 9,10-di-beta-naphthylene anthracene, 4,4'-di(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 8-hydroxyquinoline aluminum; the metallic oxide doped layer comprises a first metallic oxide and a second metallic oxide doped in the first metallic oxide. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention relates to an organic electroluminescent device and a manufacturing method of the organic electroluminescent device. The organic electroluminescent device is of a laminated structure. According to the laminated structure, a glass substrate, an anode layer, a scattering layer, a hole injection layer, a hole transmission layer, a light-emitting layer, an electron transfer layer, an electron injection layer and a cathode layer are sequentially stacked in a laminated mode, the scattering layer comprises a ternary doping layer, and the ternary doping layer is made of high-work-function metal materials, fluorescent materials and metallic oxide materials with the hole injection capacity. According to the organic electroluminescent device and the manufacturing method, the scattering layer of the organic electroluminescent device can improve the hole injection capacity, the light color purity and hole injection efficiency, meanwhile the potential energy barrier between the scattering layer and the hole injection layer is lowered, and thus light-extraction efficiency can be improved beneficially.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a ternary doped layer and a ferric salt doped layer; the ternary doped layer comprises titanium dioxide, a magnesium compound material and a light emitting material; the magnesium compound material is selected from at least one of magnesium fluoride, magnesium oxide and magnesium sulfide; the ferric salt doped layer comprises a ferric salt material and an organic silicon micromolecule material doped in the ferric salt material; the ferric salt material is selected from at least one of ferric chloride, ferric bromide and ferric sulfide; the energy gap of the organic silicon micromolecule material is minus 3.5-minus 5.5eV. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a metal material layer, a light emitting material doped layer and a metallic oxide doped layer; the power function of the material of the metal material layer is minus 4.0-minus 5.5eV; the light emitting material doped layer comprises a light emitting material and a first metallic oxide material doped in the light emitting material; the refractive index of the first metallic oxide material is 1.8-2.0; the metallic oxide doped layer comprises a second metallic oxide and a light emitting material doped in the second metallic oxide; the HOMO energy level of the second metallic oxide is minus 5.2-minus 6.0eV; the light emitting material is described above. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

An organic electroluminescent device comprises an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode, which are stacked in sequence. The electron injection layer is composed of a first ferric salt layer, a ternary doped layer, and a second ferric salt layer. The first ferric salt layer and the second ferric salt layer are made of at least one material selected from ferric chloride, ferric bromide and ferric sulfide. The ternary doped layer is composed of a bipolar metal oxide material, a luminescent material and zinc powder. The bipolar metal oxide material includes at least one selected from molybdenum trioxide, tungsten trioxide and vanadium pentoxide. The luminescent material includes at least one selected from 4-(dinitrile methyl)-2-butyl-6-(1,1,7,7-tetramethyljulolidine-9-vinyl)-4H-pyrans, 9,10-di-beta-naphthylene anthracene, 4,4'-bis(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 8-hydroxyquinoline aluminum.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a metal material doped layer and a calcium compound material doped layer; the metal material doped layer comprises a metal material and a light emitting material doped in the metal material; the power function of the metal material is minus 4.0-minus 5.5eV; the calcium compound material doped layer comprises a calcium compound material and a magnesium compound material doped in the calcium compound material; the calcium compound material is selected from at least one of calcium oxide, calcium chloride, calcium carbonate and calcium fluoride; the magnesium compound material is selected from at least one of magnesium fluoride, magnesium oxide, magnesium chloride and magnesium sulfide. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention relates to an organic light-emitting device and a manufacturing method thereof. The organic light-emitting device comprises a substrate, an anode, a hole injection layer, a hole transfer layer, a light-emitting layer, an electron transfer layer, an electron injection layer and a cathode which are sequentially stacked. The electron injection layer comprises a ferric salt doping layer and a ternary doping layer which are stacked on the electron transfer layer in sequence. The ferric salt doping layer is made of an inorganic ferric salt and a first fullerene derivate. The ternary doping layer is made of a phthalocyanine metal compound, fluorescence radiation materials and a second fullerene derivate. Due to the fact that the carrier concentration of the inorganic ferric salt is high, the electron density and the electron-hole combination probability can be increased; due to the phthalocyanine metal compound, light emitted perpendicularly can be scattered, and the photon utilization rate is increased; due to the fluorescence radiation materials, the light-emitting light color can be complemented, and the light color purity and the light-emitting efficiency are improved; due to the first and second fullerene derivates, the electron transfer rate can be increased; accordingly, the light-emitting efficiency of the organic light-emitting device is high.

The invention relates to an organic electroluminescent device and a manufacturing method of the organic electroluminescent device. The organic electroluminescent device is of a laminated structure. According to the laminated structure, a glass substrate, an anode layer, a scattering layer, a hole injection layer, a hole transmission layer, a light-emitting layer, an electron transfer layer, an electron injection layer and a cathode layer are sequentially stacked in a laminated mode, the scattering layer comprises a metal doping layer and a molysite doping layer, the metal doping layer is made of high-work-function metal materials and fluorescent materials, and the molysite doping layer is made of molysite materials and hole doping materials. According to the organic electroluminescent device and the manufacturing method, the scattering layer of the organic electroluminescent device improves the hole injection capacity, improves the light color purity, improves the electrical conductivity of the device and lowers the hole injection potential energy barrier, so that the hole injection efficiency is improved, and the light-extraction efficiency can be improved beneficially.

The invention relates to an organic compound which is characterized in that the organic compound has a structure as shown in a formula (1), in the formula (1), X1 is selected from one of CR1R2, NR3, O, S or SiR4R5, and when R3 exists, R3 is optionally connected with a ring D to form a fused ring structure; the ring E, the ring D and the ring A are independently selected from one of substituted or unsubstituted C6-C30 aromatic rings and substituted or unsubstituted C3-C30 heteroaromatic rings respectively; ar is a structure as shown in a formula (a); z1 is selected from C or Si; z2 is selected from one of CR6R7, NR8, O, S and SiR9R10, and a is 0 or 1; y1-Y4 are respectively and independently selected from C, CR13 or N, and Y5-Y8 are respectively and independently selected from CR13 or N; r1 to R13 are independently selected from one of hydrogen, a substituted or unsubstituted C1-C10 chain alkyl group, a substituted or unsubstituted C3-C10 cycloalkyl group, a substituted or unsubstituted C1-C10 alkoxy group, a substituted or unsubstituted C1-C10 silyl group, a substituted or unsubstituted C6-C30 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group, and R13 is optionally independently connected with an aromatic ring or an aromatic heterocyclic ring to form a ring.

The invention relates to an organic light-emitting device and a manufacturing method thereof. The organic light-emitting device comprises a substrate, an anode, a hole injection layer, a hole transfer layer, a light-emitting layer, an electron transfer layer, an electron injection layer and a cathode which are sequentially stacked. The electron injection layer comprises a ferric salt doping layer, a fullerene doping layer and a titanium dioxide doping layer which are stacked on the electron transfer layer in sequence. The ferric salt doping layer is made of an inorganic ferric salt and fluorescence radiation materials. The fullerene doping layer is made of a fullerene derivate and metal. Due to the fact that the carrier concentration of the inorganic ferric salt is high, the electron density and the electron-hole combination probability can be increased; due to the fluorescence radiation materials, light-emitting light color can be complemented, the light color purity is improved, and the light-emitting efficiency is improved; due to the fact that the fullerene derivate is electron-rich materials, the electron transfer rate can be increased; due to the fact that the titanium dioxide doping layer can enable light to be scattered, light emitted to the two sides can be returned to the middle, and the light-emitting efficiency is improved; accordingly, the light-emitting efficiency of the organic light-emitting device is high.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer comprises a zinc doped layer, a zinc powder layer and a ferric salt doped layer; the zinc doped layer comprises a light emitting material and zinc powder doped in the light emitting material; the light emitting material is selected from at least one of 4-(dinitrile methyl)-2-butyl-6-(1,1,7,7-tetramethyljulolidine-9-vinyl)-4H-pyran, 9,10-di-beta-naphthylene anthracene, 4,4'-di(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 8-hydroxyquinoline aluminum; the ferric salt doped layer comprises a light emitting material and a ferric salt doped in the light emitting material; the light emitting material is described above; the ferric salt is selected from at least one of ferric chloride, ferric bromide and ferric sulfide.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a ternary doped layer and a hole transfer material doped layer; the ternary doped layer comprises a light emitting material, an organic silicon micromolecule material and a copper compound material; the energy gap of the organic silicon micromolecule material is minus 3.5-minus 5.5eV; the copper compound material is selected from at least one of copper iodide, cuprous oxide, copper phthalocyanine and copper oxide; the hole transfer material doped layer comprises a hole transfer material and a magnesium compound material doped in the hole transfer material; the magnesium compound material is selected from at least one of magnesium fluoride, magnesium oxide, magnesium chloride and magnesium sulfide. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention discloses a rare-earth nanometer metasilicate red fluorophor and the method for preparation. It contains the following setups: dissolving sensitizer activator substrate yttrium oxide in norbiline (or azotic acid), pressure-reduced distilling to eliminate water and excess acid, adding alcohol to prepare clear and transparent solution, and adding substrate silicon material to prepare transparent sol, pressure-reduced distilling to eliminate alcohol and acquiring powder solid, and adglutinating in 550-750 Deg. C by 2-4 hours to prepare the product. It prepares rare-earth nanometer red fluorescent powder in a low temperature (600 Deg. C) and a short time (3 hours), the average grain diameter being about 60-80 nm, the luminous intensity strong, chemical and optical property stable, the material easily obtained and cheap. Chemical expression formula of the rare-earth nanometer red fluorescent powder is as following: (YxSiy0z: Euj, Mn.

The present invention provides an OLED display panel. The OLED display panel includes a base, a light-emitting layer, and an encapsulation layer. The light-emitting layer is arranged on the base, the encapsulation layer covers the surface of the light-emitting layer, and the light-emitting layer The layer includes a plurality of pixel units arranged in an array, and the OLED display panel further includes at least one light extraction unit, which is arranged in the encapsulation layer and corresponds to the pixel units. The OLED display panel proposed by the present invention includes at least one light extraction unit, the light extraction unit is arranged in the encapsulation layer and corresponds to the pixel unit, the light extraction efficiency can be improved by adding the light extraction unit, thereby improving the light color purity , Display brightness and luminous life.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer comprises a metal material, a hole transfer material and a light emitting material; the power function of the metal material is minus 2.0-minus 3.5eV; the hole transfer material is selected from at least one of 1,1-di[4-[N,N'-di(p-cresyl)amino]phenyl]cyclohexane, 4,4',4''-tri(carbazole-9-yl)triphenylamine and N,N'-(1-naphthyl)-N,N'-diphenyl-4,4'-benzidine. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention provides a display, comprising a red light emitting unit, a green light emitting unit, and a blue light emitting unit, the red light emitting layer of the red light emitting unit is an organic metal halide perovskite material emitting red light, and the green light emitting unit The green light-emitting layer is an organic metal halide perovskite material that emits green light, and the blue light-emitting layer of the blue light-emitting unit is an organic blue light-emitting material other than the organic metal halide perovskite material, that is, the red light-emitting unit and the green light-emitting unit The light-emitting units all adopt the PeLED structure, and the blue-light emitting unit adopts the OLED structure. Except for the materials of the light-emitting layer, the materials of the red light-emitting unit, the green light-emitting unit, and the other structural layers of the blue light-emitting unit are the same, and can be produced in the same process. The preparation is completed, saving process time and production cost; because the price of the organic metal halide perovskite material of the red and green light-emitting layers is relatively low and the light color purity is high, the production cost of the display is further reduced and the color of the display is improved. saturation.

The invention discloses an organic electroluminescence device. The organic electroluminescence device comprises a glass substrate, a scattering layer, a positive pole, a hole-injection layer, a hole-transmission layer, a light-emitting layer, an electronic transmission layer, an electronic injection layer and a negative pole which are sequentially overlapped, wherein the scattering layer comprises a metal material layer and a three-element doped layer; the work function of the metal material is between -4.0eV and -5.5eV; the three-element doped layer comprises a lithium salt material, a light-emitting material and a hole object material; the lithium salt material is selected from one and more of lithium oxide, lithium fluoride, lithium chloride and lithium bromide; the hole object material is selected from one and more of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-quinodimethane, 4,4,4-tri(naphthyl-1-phenyl-amino) triphenylamine and dinaphthyl-N,N'-diphenyl-4,4'-benzidine. The organic electroluminescence device is relatively high in light-emitting efficiency. The invention also provides a manufacturing method for the organic electroluminescence device.

The invention provides a coordination compound phosphorescent material based on an electron-deficient functional group, wherein the general formula of the molecular skeleton of the coordination compound phosphorescent material based on the electron-deficient functional group is shown in the specification, R is an electron-deficient substituent, and a group defined in the specification represents an organic nitrogen heterocyclic ring. According to the invention, an electron-deficient functional group is introduced to regulate and control the position of a high-energy-level excited state, so that the coupling effect between the high-energy-level excited state and the lowest excited state is promoted so as to enhance the light-emitting capacity; and the maximum luminous efficiency of the obtained luminescent material in a main body reaches 96%, so that the luminescent material has potential application value in the fields of high-performance electroluminescence, photocatalysis, cell imaging, chemical and biological detection and the like.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a calcium compound material doped layer and a binary doped layer; the calcium compound material doped layer comprises a calcium compound material and a light emitting material doped in the calcium compound material; the calcium compound material is selected from at least one of calcium oxide, calcium chloride, calcium carbonate and calcium fluoride; the binary doped layer comprises an organic silicon micromolecule material and a copper compound material doped in the organic silicon micromolecule material. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

A white long-afterglow luminescent material is characterized in that the molecular formula of the white long-afterglow luminescent material is Ca<5-x>Ga6O14: Pr3+x, wherein Pr3+ is an activator, Ca<5-x>Ga6O14 is a matrix, and x is greater than or equal to 0.005 and less than or equal to 0.09. The white long-afterglow luminescent material is high in purity, uniform in morphology and uniform in sizedistribution, emits white afterglow after being excited by multiple excitation sources at about 10 microns, is high in light color purity, and after being excited by ultraviolet light with the wavelength of 254 nm for 5 minutes, the white afterglow initial brightness reaches 0.766 cd / m<2>, the longest afterglow initial brightness can reach 13 hours or above, and the afterglow brightness is stillkept 10 mcd / m<2>.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a ternary doped layer and a metal material layer; the ternary doped layer comprises a copper compound material, a calcium compound material and a light emitting material; the copper compound material is selected from at least one of copper iodide, cuprous oxide, copper phthalocyanine and copper oxide; the calcium compound material is selected from at least one of calcium oxide, calcium chloride, calcium carbonate and calcium fluoride; the power function of the material of the metal material is minus 4.0-minus 5.5eV. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency. The invention further provides a preparation method of the organic electroluminescence device.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a light emitting material layer and a binary doped layer; the light emitting material layer is made of a material selected from at least one of 4-(dinitrile methyl)-2-butyl-6-(1,1,7,7-tetramethyljulolidine-9-vinyl)-4H-pyran, 9,10-di-beta-naphthylene anthracene, 4,4'-di(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 8-hydroxyquinoline aluminum; the binary doped layer comprises a calcium compound material and a rhenium compound material doped in the calcium compound material; the calcium compound material is selected from at least one of calcium oxide, calcium chloride, calcium carbonate and calcium fluoride; the rhenium compound material is selected from at least one of rhenium heptoxide, rhenium oxide, rhenium trioxide and rhenium chloride.

The invention discloses an organic electroluminescence device which comprises a glass substrate, a scattering layer, an anode, a hole injection layer, a hole transmission layer, a light emitting layer, an electron transfer layer, an electron injection layer and a cathode which are overlapped in sequence, wherein the scattering layer consists of a light emitting material, a copper compound material and a rhenium compound material; the material of the light emitting material is selected from at least one of 4-(dinitrile methyl)-2-butyl-6-(1,1,7,7-tetramethyljulolidine-9-vinyl)-4H-pyran, 9,10-di-beta-naphthylene anthracene, 4,4'-di(9-ethyl-3-carbazole vinyl)-1,1'-biphenyl and 8-hydroxyquinoline aluminum; the copper compound material is selected from at least one of copper iodide, cuprous oxide, copper phthalocyanine and copper oxide; the rhenium compound material is selected from at least one of rhenium heptoxide, rhenium oxide, rhenium trioxide and rhenium chloride. The organic electroluminescence device disclosed by the invention is relatively high in light emission efficiency.