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Organic electroluminescence device and preparation method thereof

An electroluminescence device and a luminescence technology, applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of low luminous efficiency and achieve low cost, improved luminous efficiency, and simple operation.

Active Publication Date: 2013-05-01
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the present invention provides an organic electroluminescent device to solve the technical problem of low luminous efficiency of organic electroluminescent devices in the prior art

Method used

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  • Organic electroluminescence device and preparation method thereof
  • Organic electroluminescence device and preparation method thereof
  • Organic electroluminescence device and preparation method thereof

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preparation example Construction

[0028] The embodiment of the present invention further provides a method for preparing the above-mentioned organic electroluminescent device, comprising the following steps:

[0029] Step S01, providing a spherical glass substrate:

[0030] Take a spherical glass substrate, and clean the glass substrate;

[0031] Step S02, preparing an anti-reflection layer:

[0032] Forming an anti-reflection layer on the inner surface of the spherical glass substrate by vacuum evaporation;

[0033] Step S03, preparing the cathode layer:

[0034] forming a cathode layer on the inner surface of the antireflection layer by vacuum evaporation;

[0035] Step S04, preparing an organic functional layer:

[0036] forming an organic functional layer on the inner surface of the cathode layer by vacuum evaporation;

[0037] Step S05, preparing the anode:

[0038] An anode is formed on the inner surface of the organic functional layer by vacuum evaporation to obtain an organic electroluminescent d...

Embodiment 1

[0057] Embodiment 1 of the present invention prepares an organic electroluminescent device, comprising the following steps:

[0058] The hemispherical glass substrate with an inner diameter of 5 mm and a thickness of 4 mm was ultrasonically cleaned with pure water, acetone, ethanol, etc. for 10 minutes;

[0059] Put the cleaned glass substrate into the metal cavity of the vacuum coating equipment, and successively vapor-deposit an anti-reflection layer with a thickness of 30nm, made of ZnS, and a cathode with a thickness of 20nm, made of Ag;

[0060] Then put the hemispherical glass substrate with the cathode evaporated into the organic vacuum cavity, and successively evaporate the electron transport layer with a thickness of 40nm, and the material is a (Bphen:Cs) mixture, and the thickness is 10nm, and the material is a hole blocking layer of Bphen , thickness is 40nm, material is TCTA:Ir(ppy) 3 The luminescent layer, the thickness is 40nm, and the material is the hole trans...

Embodiment 2

[0063] The method for preparing an organic electroluminescent device according to Embodiment 2 of the present invention comprises the following steps:

[0064] The hemispherical glass substrate with an inner diameter of 5 mm and a thickness of 4 mm was ultrasonically cleaned with pure water, acetone, ethanol, etc. for 13 minutes;

[0065] Put the cleaned glass substrate into the metal cavity of the vacuum coating equipment, successively evaporate the thickness to 20nm, and the material is MoO 3 The anti-reflection layer, the thickness is 20nm, and the material is the negative electrode of Ag;

[0066] Then put the hemispherical glass substrate with the cathode evaporated into the organic vacuum cavity, and successively evaporate the electron transport layer with a thickness of 40nm, and the material is a (Bphen:Cs) mixture, and the thickness is 10nm, and the material is a hole blocking layer of Bphen , thickness is 40nm, material is TCTA:Ir(ppy) 3 The luminescent layer, the ...

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Abstract

The invention relates to the technical field of organic electroluminescence and provides an organic electroluminescence device and a preparation method thereof. The organic electroluminescence device comprises an anode layer, an organic functional layer, a cathode layer and a glass substrate layer which are stacked in sequence, wherein the glass substrate layer is shaped as a spherical surface; and the anode layer, the organic functional layer, the cathode layer and the glass substrate layer are arranged in sequence along the radial direction of the spherical surface. According to the organic electroluminescence device, a microcavity effect is formed by the spherical glass substrate layer and an inverted bottom emission structure, so that total internal reflection and transverse waveguide output of the organic electroluminescence device are adjusted, and the light-emitting efficiency of the organic electroluminescence device is remarkably promoted; and the preparation method of the organic electroluminescence device is low in cost, simple to operate and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescence, and in particular relates to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic electroluminescent devices are of great commercial value. In general, the device emits green light with a brightness of up to 1000cd / m under a driving voltage of 10V 2 , the efficiency reaches 1.5lm / W, and the life span exceeds 1000 hours. However, due to the difference in refractive index inside and outside the device, only a small part of the light emitted inside the device can reach the outside air for us to use, while most of the light is shut inside the device, and after repeated refraction, it is finally absorbed by the internal material and becomes into heat. The light emitted by the light-emitting layer has undergone optical coupling processes such as absorption, reflection and refraction of various organic layers, ITO and glass ...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/56
Inventor 周明杰王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD