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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, and poor ability to isolate water and oxygen, and achieve Improve light extraction efficiency, enhance light scattering, and enhance the effect of transmission rate

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

[0034] The method for preparing the above-mentioned organic electroluminescent device specifically includes the following steps:

[0035] 1. Rinse the glass with distilled water and ethanol, and soak it in isopropanol overnight.

[0036] 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.

[0037] 3. Next, an electron injection layer is prepared on the above electron transport layer, and the electron injection layer is composed of a first rubidium compound layer, an organosilicon small molecule doped layer and a second rubidium compound layer. The first rubidium compound layer is evaporated by thermal resistance, and its material is rubidium carbonate (Rb 2 CO 3 ), rubidium chloride (RbCl), rubidium nitrate (RbNO 3 ) rubidium su...

Embodiment 1

[0050] Such as figure 1 As shown, the organic electroluminescent device in this embodiment is a layered structure, and each layer is in turn:

[0051] Anode conductive substrate 101 of glass / IZO, MoO 3 The hole injection layer 102 of material, the hole transport layer 103 of TAPC material, the light-emitting layer 104 of ADN material, the electron transport layer 105 of TPBI material, Rb 2 CO 3 The first rubidium compound layer 106 of material, UGH2:Alq 3 The organosilicon small molecule doped layer 107 made of RbCl, the second rubidium compound layer 108 made of RbCl, and the cathode layer 109 made of Ag. The first rubidium compound layer 106 , the organosilicon small molecule doped layer 107 and the second rubidium compound layer 108 form an electron injection layer. (where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping)

[0052] The above-mentioned organic electroluminescent device is prepared according to the following steps in ...

Embodiment 2

[0066] 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.

[0067] The organic electroluminescent device in this embodiment is a layered structure, and each layer is sequentially:

[0068] Anode conductive substrate of glass / IZO, MoO 3 The hole injection layer made of TAPC material, the hole transport layer made of TAPC material, the light emitting layer made of ADN material, the electron transport layer made of TPBI material, the first rubidium compound layer made of RbCl material, the organosilicon small molecule doped layer made of UGH1: TPBi material, Rb 2 SO 4 The second rubidium compound layer made of material and the cathode layer made of Pt. The first rubidium compound layer, the organosilicon small molecule doped layer and the second rubidium compound layer form the electron injection layer. (where the slash " / " indicates a layered struc...

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Abstract

The invention relates to an organic light-emitting device and a production method thereof. The organic light-emitting device 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 first rubidium compound layer, an organosilicone small molecule doping layer and a second rubidium compound layer. The rubidium compound of the first rubidium compound layer in the electron injection layer is low in melting point and easy to evaporate and plate; due to existing of metal ions, work function is low, electronic injection barrier between the electron transmission layer and the electron injection layer can be lowered, and injection of the electrons is benefited.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to an organic electroluminescent device. The invention also relates to a preparation method of the organic electroluminescent 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 penetra...

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 周明杰黄辉张振华王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD