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Organic electroluminescence device and manufacturing method thereof

An electroluminescence device and luminescence technology, which is applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of low light-emitting performance of devices, improve injection and transmission efficiency, improve injection capacity, and strengthen The effect of luminous efficiency

Inactive Publication Date: 2015-03-18
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing organic electroluminescent device (OLED), there is a difference in refractive index between the laminated layers. For example, the refractive index of glass is generally 1.4 to 1.5, and the refractive index of the anode and the organic light-emitting functional layer including at least the light-emitting layer is generally is 1.7 to 1.8, therefore, light is generated from the light-emitting layer, and then passes through each stack, and total reflection will occur at the interface between each stack, and most of the light will be limited to the glass substrate, electrodes and organic light-emitting functions. layer, resulting in lower light extraction performance of the device as a whole

Method used

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  • Organic electroluminescence device and manufacturing method thereof
  • Organic electroluminescence device and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0051] A method for preparing an organic electroluminescent device, comprising the steps of:

[0052] (1) Provide optical glass with a refractive index of 1.8 and glass grade N-LASF44 as the substrate, rinse the glass substrate with distilled water and ethanol, and soak it in isopropanol for 12 hours;

[0053] (2) The anode is prepared on the surface of the glass substrate by magnetron sputtering; the material is indium tin oxide (ITO) with a thickness of 150nm; the acceleration voltage of magnetron sputtering is 700V, the magnetic field is 120G, and the power density is 25W / cm 2 ;

[0054] (3) Prepare a scattering layer on the surface of the anode; the scattering layer is sequentially composed of an organic material layer, a titanium dioxide layer and a doped layer; first, the organic material layer is prepared on the surface of the anode by thermal resistance evaporation; the material is 2,3, 5,6-tetrafluoro-7,7,8,8,-tetracyano-p-quinodimethane (F4-TCNQ), with a thickness ...

Embodiment 2

[0068] A method for preparing an organic electroluminescent device, comprising the steps of:

[0069] (1) Provide optical glass with glass grade N-LAF36 as the substrate, rinse the glass substrate with distilled water and ethanol, and soak it in isopropanol for 12 hours;

[0070] (2) The anode is prepared on the surface of the glass substrate by magnetron sputtering; the material is indium zinc oxide (IZO) with a thickness of 80nm; the acceleration voltage of magnetron sputtering is 300V, the magnetic field is 50G, and the power density is 40W / cm 2 ;

[0071] (3) Prepare a scattering layer on the surface of the anode; the scattering layer is sequentially composed of an organic material layer, a titanium dioxide layer and a doped layer; firstly, the organic material layer is prepared on the surface of the anode by thermal resistance evaporation; the material is 4, 4, 4-tris(naphthyl-1-phenyl-ammonium)triphenylamine (1T-NATA), the thickness is 30nm; the evaporation rate is 1nm...

Embodiment 3

[0082] A method for preparing an organic electroluminescent device, comprising the steps of:

[0083] (1) Provide optical glass with glass grade N-LASF31A as the substrate, rinse the glass substrate with distilled water and ethanol, and soak it in isopropanol for 12 hours;

[0084] (2) The anode is prepared on the surface of the glass substrate by magnetron sputtering; the material is aluminum zinc oxide (AZO) with a thickness of 300nm; the acceleration voltage of magnetron sputtering is 800V, the magnetic field is 200G, and the power density is 1W / cm 2 ;

[0085] (3) Prepare a scattering layer on the surface of the anode; the scattering layer is sequentially composed of an organic material layer, a titanium dioxide layer and a doped layer; first, an organic material layer is prepared on the surface of the anode by thermal resistance evaporation; the material is dinaphthyl- N,N'-diphenyl-4,4'-biphenylenediamine (2T-NATA), the thickness is 10nm; the evaporation rate is 0.1nm / ...

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Abstract

The invention discloses an organic electroluminescence device. The organic electroluminescence device comprises a glass substrate, and an anode, a scattering layer, an organic light-emitting functional layer and a cathode which are sequentially arranged on the surface of the glass substrate in a laminated manner; the scattering layer comprises an organic material layer, a titanium dioxide layer and a doping layer which are sequentially arranged on the surface of the anode in a laminated manner; the organic material layer is made of at least one of 2, 3, 5, 6-tetrafluoro-7, 7, 8, 8,-tetracyano-benzoquinodimethane, 4, 4, 4-tri(naphthyl-1-phenyl-ammonio) triphenylamine and dinaphthyl-N, N'-diphenyl-4, 4'-benzidine; the doping material is made of a mixed material prepared by mixing carbonate and a hole-transport material; the carbonate is calcium carbonate, magnesium carbonate, zinc carbonate or barium carbonate. According to the organic electroluminescence device disclosed by the invention, the scattering layer is arranged, so that total reflection of light in the electroluminescence device can be reduced and the luminous efficiency of the electroluminescence device is improved. The invention also discloses a manufacturing method of the organic electroluminescence device.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic electroluminescent device (OLED) is a kind of electric light source. In 1987, C.W.Tang and Van Slyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence, which enabled the research of organic electroluminescent devices (OLEDs) to be carried out rapidly and widely around the world. stand up. [0003] In the existing organic electroluminescent device (OLED), there is a difference in refractive index between the laminated layers. For example, the refractive index of glass is generally 1.4 to 1.5, and the refractive index of the anode and the organic light-emitting functional layer including at least the light-emitting layer is generally is 1.7 to 1.8, therefore, light is generated from the light-emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
Inventor 周明杰黄辉陈吉星王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD