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Multifunctional transparent electrode structure of ultraviolet organic light-emitting device

A transparent electrode and transparent electrode layer technology, applied in the direction of electric solid devices, electrical components, semiconductor devices, etc., can solve the problems of low luminous efficiency of UVOLED devices, restrict the application of UVOLED devices, limit the effective injection of holes, etc., and achieve the improvement of ultraviolet light. Effects of transmittance, low resistivity, and increased work function

Inactive Publication Date: 2013-03-27
江苏广发光电科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] But for UV OLED devices, ITO is commonly used as a transparent electrode. On the one hand, its work function is low, which limits the effective injection of holes; strong absorption
These will lead to low luminous efficiency of UV OLED devices, which restricts the practical application of UV OLED devices.

Method used

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  • Multifunctional transparent electrode structure of ultraviolet organic light-emitting device
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Embodiment 1

[0021] like figure 1 As shown, the structure of the UV OLED device includes a substrate 1 , a transparent electrode film 2 , an organic electroluminescent material layer 3 , a metal layer 4 , and an encapsulation layer 5 .

[0022] The transparent electrode film 2 is fabricated on the substrate 1 , the organic electroluminescent material layer 3 is fabricated on the transparent electrode film 2 , the metal layer 4 is deposited on the organic layer 3 by thermal evaporation, and finally the encapsulation layer 5 is fabricated. By connecting the transparent electrode film 2 and the negative electrode metal electrode layer 4, the organic material layer 3 is driven to emit light by direct current.

[0023] The preparation method of the transparent electrode film layer 2 is as follows:

[0024] A transparent electrode with a multilayer structure is directly prepared on the substrate that transmits ultraviolet light and absorbs visible light.

[0025] 1. Prepare a periodic thin fil...

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Abstract

A multifunctional transparent electrode structure of an ultraviolet organic light-emitting device is characterized in that a transparent electrode film is manufactured on a substrate directly, an organic light-emitting material layer is manufactured on the transparent electrode film, a metal layer is deposited on the organic layer by heat evaporation, and a packaging layer is manufactured finally. The multifunctional transparent electrode structure of the ultraviolet organic light-emitting device is of a double-layer structure comprising an inorganic material film for increasing ultraviolet light transmittance and a transparent conducting oxide inorganic material film. The multifunctional transparent electrode structure has the advantages of high work function, high stability, high reflectance, high light transmittance, low resistivity and the like and is particularly suitable for a transparent electrode of the ultraviolet organic light-emitting device, the work function is increased, the optical performance and the electrical property of the ultraviolet organic light-emitting device can be unaffected, and the inorganic material film for increasing the ultraviolet light transmittance can be applied to outside one side of the transparent electrode of the substrate and the back of the substrate so as to increase ultraviolet light extraction efficiency.

Description

technical field [0001] The invention relates to a transparent electrode structure and a preparation method of an organic electroluminescence device, which have the characteristics of high work function, high stability, high reflectivity and the like, and is especially suitable for a transparent electrode of an ultraviolet organic electroluminescence device. Background technique [0002] Due to its high brightness, fast response, low power consumption, high efficiency and simple production, OLED can be used in the field of lighting. Its light-emitting principle is to deposit a very thin organic material between two electrodes, and pass the Direct current makes it glow. UV organic light emitting devices (UV OLED for short) refers to the luminescence peak of organic electroluminescence devices between 200nm and 400nm, and its luminescence principle is similar to that of ordinary OLED devices, that is, under applied voltage, Injection of electron and hole pairs, recombination l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56
Inventor 路林张民艳
Owner 江苏广发光电科技有限公司
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