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Organic electroluminescence apparatus and preparation method thereof

An electroluminescence device and electroluminescence technology, which are applied in the directions of organic light-emitting devices, organic light-emitting device structures, and organic light-emitting device parameters, etc. problem, to achieve high luminescence performance, improve the recombination probability and luminescence quantum efficiency, and improve the effect of electron injection efficiency

Inactive Publication Date: 2014-07-16
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] If the transparent conductive oxide film is used as the cathode, due to its high work function, the electron injection ability to the organic light-emitting layer will be reduced. The electron injection ability is one of the main factors determining the luminous brightness and luminous efficiency of the organic electroluminescent device. Therefore, , lower electron injection ability will lead to poor performance and low luminous efficiency of organic electroluminescent devices

Method used

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  • Organic electroluminescence apparatus and preparation method thereof
  • Organic electroluminescence apparatus and preparation method thereof

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Embodiment 1

[0081] A preparation method of an organic electroluminescence device, comprising the following steps:

[0082] The glass substrate was placed in deionized water containing detergent for ultrasonic cleaning, and after cleaning, treated with isopropanol and acetone in ultrasonic waves for 20 minutes, and then dried with nitrogen;

[0083] 1 x 10 in vacuum -4 In the vacuum coating system of Pa, an indium tin oxide (ITO) film was prepared by sputtering at a speed of 0.1 nm / s on the surface of the glass substrate as the anode;

[0084] Through thermal evaporation process, the vacuum degree is 1.0×10 -4 Under the conditions of Pa and speed of 0.02nm / s, F6-TNAP was doped into MeO-TPD according to the doping mass fraction of 5%, and the mixed material was formed. TPD and DCJTB were doped into Alq according to the doping mass fraction of 8%. 3 Hybrid materials, TPBi, Li formed in 2 CO 3 The hole transport layer, the electron blocking layer, the light emitting layer, the hole blocki...

Embodiment 2

[0089] A method for preparing an organic electroluminescent device, comprising the steps of:

[0090] Place the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen;

[0091] At a vacuum of 1 × 10 -5 In Pa's vacuum coating system, a gallium zinc oxide film (GZO) is prepared as an anode by sputtering at a speed of 1nm / s on the surface of a glass substrate;

[0092] Through thermal evaporation process, in a vacuum of 1.0×10 -5 Under the conditions of Pa and speed 0.5nm / s, F2-HCNQ is sequentially evaporated to form a mixed material, TPD, Ir(ppy) doped into ZnPc according to the doping mass fraction of 10%. 3 The mixed material, BAlq, CsN formed by doping TCTA according to the doping mass fraction of 10% 3 According to the mixed material doped into PBD with a doping mass fraction of 15%, the hole transport layer, electron blocking layer...

Embodiment 3

[0096] A method for preparing an organic electroluminescent device, comprising the steps of:

[0097] Place the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen;

[0098] In a vacuum of 1×10 -3 In Pa's vacuum coating system, aluminum zinc oxide film (AZO) is prepared as anode by sputtering at a speed of 0.5nm / s on the surface of the glass substrate;

[0099] Through thermal evaporation process, in a vacuum of 1.0×10 -3 Under the conditions of Pa and speed of 0.2nm / s, F4-TCNQ is sequentially evaporated to form a mixed material, TAPC, DPVBi, BAlq, Cs doped into CuPc according to the doping mass fraction of 2%. 2 CO 3 A hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, and an electron transport layer were respectively prepared from the mixed materials formed by doping 5% doping mass fr...

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Abstract

The invention provides an organic electroluminescence apparatus and a preparation method thereof. In the organic electroluminescence apparatus prepared by using the method, transparent conductive oxide films are employed as an anode and a cathode, a pn junction layer is arranged between an organic luminescence function layer and the cathode, and the pn junction layer comprises a first metal layer, a semiconductor layer and a second metal layer which are successively stacked, such that the electron injection capability is improved, and a stable and uniform luminous effect is obtained. The preparation method is simple in process, free from pollution and easy to control, and facilitates 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] An organic electroluminescence device is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding properties such as ultra-thin, self-luminous, fast response, and low power consumption. It is a highly potential display technology and light source, which conforms to the development trend of mobile communication and information display in the information age, as well as the requirements of green lighting technology. At present, many researchers at home and abroad pay attention to it. [0003] Organic electroluminescent devices have various structures, such as top emission light emitting devices and inverted light emitting devices. Most of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K50/11H10K2101/40H10K50/826H10K2102/101H10K2102/302H10K2102/00H10K2101/00H10K71/00
Inventor 周明杰王平冯小明钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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