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Organic electroluminescent device and preparation method thereof

An electroluminescent device and luminescent technology, which is applied in the manufacture of organic semiconductor devices, electric solid devices, semiconductor/solid state devices, etc., can solve the problems of low luminous efficiency and achieve the effect that is conducive to transmission

Inactive Publication Date: 2015-09-02
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

[0004] The object of the present invention is to provide an organic electroluminescent device, which is used to solve the problem of low luminous efficiency of traditional organic electroluminescent devices in the prior art

Method used

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  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof

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Experimental program
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Embodiment 1

[0061] Such as figure 1 As shown, the structure of the organic electroluminescent device of this embodiment is: ITO glass / MoO 3 :NPB(30:100) / MoO 3 :NPB(30:100) / NPB / Ir(MDQ) 2 (acac):TCTA(0.5:100) / Bphen / Cs 2 CO 3 :Bphen(30:100) / Ag, wherein, the colon ":" indicates that the former is doped in the latter.

[0062] The preparation method of the organic electroluminescence device of this embodiment comprises the following steps:

[0063] (a) Pretreatment of the anode conductive substrate 101:

[0064] First, ITO glass is used as the anode conductive substrate 101, wherein the material of the substrate 101a is glass, and the material of the anode conductive layer 101b is ITO;

[0065] Then, the anode conductive substrate 101 is sequentially cleaned with detergent→cleaned with deionized water→cleaned with acetone→cleaned with ethanol. The above-mentioned cleanings are all carried out with an ultrasonic cleaning machine. Repeat the method 3 times, and dry it in an oven for later...

Embodiment 2

[0083] Such as figure 1 As shown, the structure of the organic electroluminescent device of this embodiment is: ITO glass / WO 3 :TCTA(25:100) / WO 3 :TCTA(25:100) / TCTA / PQIr:mCP(2:100) / BCP / CsF:BCP(25:100) / Al, wherein the colon ":" indicates that the former is doped in the latter.

[0084] The preparation method of the organic electroluminescence device of this embodiment comprises the following steps:

[0085] (a) Pretreatment of the anode conductive substrate 101:

[0086] First, ITO glass is used as the anode conductive substrate 101, wherein the material of the substrate 101a is glass, and the material of the anode conductive layer 101b is ITO;

[0087] Then, the anode conductive substrate 101 is sequentially cleaned with detergent→cleaned with deionized water→cleaned with acetone→cleaned with ethanol. The above-mentioned cleanings are all carried out with an ultrasonic cleaning machine. Repeat the method 3 times, and dry it in an oven for later use after cleaning;

[0088...

Embodiment 3

[0105] Such as figure 1 As shown, the structure of the organic electroluminescent device of this embodiment is: ITO glass / V 2 o 5 :CBP(35:100) / V 2 o 5 :CBP(35:100) / CBP / (fbi) 2 Ir(acac):CBP(1:100) / BAlq / CsN 3 :BAlq(35:100) / Au, wherein the colon ":" indicates that the former is doped in the latter.

[0106] The preparation method of the organic electroluminescence device of this embodiment comprises the following steps:

[0107] (a) Pretreatment of the anode conductive substrate 101:

[0108] First, ITO glass is used as the anode conductive substrate 101, wherein the material of the substrate 101a is glass, and the material of the anode conductive layer 101b is ITO;

[0109] Then, the anode conductive substrate 101 is sequentially cleaned with detergent→cleaned with deionized water→cleaned with acetone→cleaned with ethanol. The above-mentioned cleanings are all carried out with an ultrasonic cleaning machine. Repeat the method 3 times, and dry it in an oven for later use ...

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Abstract

The invention relates to an organic electroluminescent device and a preparation method thereof, wherein the organic electroluminescent device comprises an anode conductive substrate, a first hole injection layer, a second hole injection layer, a hole transport layer, a red light emitting layer, an electron transmission layer, an electron injection layer and a cathode layer; wherein the first hole injection layer, the second hole injection layer, the hole transport layer, the red light emitting layer, the electron transmission layer, the electron injection layer and the cathode layer are successively laminated on one surface of the anode conductive substrate. The first hole injection layer and the second hole injection layer are respectively made of mixed hole material which is obtained through doping a p-type material into a hole transport material, thereby effectively improving separation efficiency between holes and electrons at a PN junction interface. According to the organic electroluminescent device, through arranging two hole injection layers which are made of same material, not only are charge separation efficiency and luminous efficiency improved, but also preparing process complexity is reduced through the p-type material which facilitates vacuum evaporating.

Description

technical field [0001] The invention relates to the field of organic electroluminescent devices, in particular to an organic electroluminescent device and a preparation method thereof. Background technique [0002] Organic electroluminescent devices (OLEDs) have the following unique advantages: (1) OLEDs are diffuse surface light sources, unlike light-emitting diodes (LEDs), which require an additional light guide system to obtain large-area white light sources; (2) Due to the diversity of organic light-emitting materials, OLED lighting can design the required color of light according to needs. The current small molecule OLED has obtained all colors of light including white light spectrum; (3) OLED can be used on a variety of substrates Such as glass, ceramics, metal, plastic and other materials, which makes the design of lighting sources more free; (4) OLED lighting panels are made by making OLED displays, which can display information while lighting; (5) OLEDs are used in ...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K85/631H10K50/15H10K50/17H10K2102/00H10K71/00
Inventor 周明杰钟铁涛王平冯小明
Owner OCEANS KING LIGHTING SCI&TECH CO LTD