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Organic light-emitting device and production method thereof

An electroluminescent device and electroluminescent technology, which are applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of reduced luminous efficiency, low electron transfer rate, unfavorable electron injection, etc., and improve light extraction efficiency. , the effect of enhancing the transmission rate and improving the efficiency of electron injection

Inactive Publication Date: 2015-05-20
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] However, in the existing organic electroluminescent devices, the electron injection layer is one of the important functional layers. During the manufacturing process, due to the poor ability of the material selected for the electron injection layer to isolate water and oxygen, water vapor will penetrate through cracks and affect Electrical Properties of Thin Film Transistors
At the same time, the selected material is not conducive to the injection of electrons, so the transport rate of electrons is low, which is two or three orders of magnitude lower than the transport rate of holes. The area is not in the light-emitting area, so that the luminous efficiency is reduced

Method used

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  • Organic light-emitting device and production method thereof
  • Organic light-emitting device and production method thereof

Examples

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Effect test

preparation example Construction

[0036] The method for preparing the above-mentioned organic electroluminescent device specifically includes the following steps:

[0037] 1. Rinse the glass with distilled water and ethanol, and soak it in isopropanol overnight.

[0038] 2. Prepare a conductive anode film on the glass cleaned in the above steps to obtain an anode conductive substrate, and then vapor-deposit sequentially on the anode conductive substrate to prepare a hole injection layer, a hole transport layer, a light-emitting layer, and an electron transport layer.

[0039] 3. Next, an electron injection layer is prepared on the above electron transport layer, and the electron injection layer is composed of a cesium salt layer, a rubidium compound doped layer and a metal phthalocyanine compound layer. The cesium salt layer, the rubidium compound doped layer and the metal phthalocyanine compound layer are all prepared by thermal resistance evaporation, and the evaporation rate is 0.1-1 nm / s. The materials of...

Embodiment 1

[0052] Such as figure 1 As shown, the organic electroluminescent device in this embodiment is a layered structure, and each layer is in turn:

[0053] Anode conductive substrate 101 of glass / ITO, hole injection layer 102 of MoO3 material, hole transport layer 103 of TCTA material, luminescent layer 104 of BCzVBi material, electron transport layer 105 of Bphen material, cesium salt layer 106 of CsF material, Rb 2 CO 3 :ReO 3 Rubidium compound doped layer 107 made of CuPc, metal phthalocyanine compound layer 108 made of CuPc, and cathode layer 109 made of Ag. The cesium salt layer 106, the rubidium compound doped layer 107 and the metal phthalocyanine compound layer 108 constitute an electron injection layer. (The colon ":" indicates mutual doping)

[0054] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0055] 1. Rinse the glass with distilled water and ethanol, and soak it in isopropanol overnight.

[005...

Embodiment 2

[0068] The layered structure of the organic electroluminescent device of the following examples 2-4 is basically the same as that of the example 1, so no illustration will be given here.

[0069] The organic electroluminescent device in this embodiment is a layered structure, and each layer is sequentially:

[0070] Anode conductive substrate of glass / IZO, V 2 o 5 Hole injection layer made of TCTA material, hole transport layer made of TCTA material, light emitting layer made of DCJTB material, electron transport layer made of TPBi material, Cs 2 CO 3 Cesium salt layer of material, RbCl:Re 2 o 7 A rubidium compound doped layer made of ZnPc material, a metal phthalocyanine compound layer made of ZnPc, and a cathode layer made of Pt material. The cesium salt layer, the rubidium compound doped layer and the phthalocyanine metal compound layer constitute the electron injection layer. (The colon ":" indicates mutual doping)

[0071] The above-mentioned organic electrolumines...

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Abstract

The invention relates to an organic light-emitting device and a production method thereof. The organic light-emitting device is of a layered structure and comprises an anode conducting substrate, a hole injection layer, a hole transmission layer, a light-emitting layer, an electron transmission layer, an electron injection layer and a cathode layer which are stacked in sequence; the electron injection layer comprises a cesium salt layer, a rubidium compound doping layer and a pathalocyanine metal compound layer. Injection efficiency of electrons can be improved by the aid of the cesium salt layer, transmission speed of the electrons can be increased by the aid of the rubidium compound doping layer, and light-emitting efficiency can be improved by the aid of the pathalocyanine metal compound layer.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to an organic electroluminescence device. The invention also relates to a preparation method of the organic electroluminescence device. Background technique [0002] 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. A high-brightness, high-efficiency double-layer organic electroluminescent device (OLED) was fabricated using ultra-thin film technology, and its brightness reached 1000cd / m at 10V 2 , its luminous efficiency is 1.51lm / W, and its lifespan is more than 100 hours. [0003] However, in the existing organic electroluminescent devices, the electron injection layer is one of the important functional layers. During the manufacturing process, due to the poor ability of the material selected for the electron injection layer to isolate water and oxygen, water vapor will penet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56
Inventor 周明杰黄辉张振华王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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