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Transparent electrode and organic electroluminescence device including the same

An electroluminescent element and luminescent technology, which is applied in the direction of electrical components, electric solid-state devices, circuits, etc., can solve problems such as complex processes

Active Publication Date: 2012-03-14
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the previous case, US5739545 disclosed semiconductor materials covering a large potential barrier on thin metals, such as ZnSe, ZnS or GaN; or EP1076368, JP2003-288993 and JP2004-006249 covered metal oxides or organic materials on thin metals, such as MgO , NPB or Alq 3 , to increase the transmittance of metal materials; but the previous proposals are all double-layer metal electrodes, and the process is more complicated

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  • Transparent electrode and organic electroluminescence device including the same
  • Transparent electrode and organic electroluminescence device including the same
  • Transparent electrode and organic electroluminescence device including the same

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Embodiment Construction

[0021] The invention provides a transparent electrode, including an electrode layer formed by co-evaporating metal materials and metal oxides. The metal material can be calcium, magnesium, indium, molybdenum, aluminum or silver, etc., and its work function is between 2.6eV and 5.3eV, and a suitable metal material can be selected according to the required electrode work function. The metal oxide can be MoO 3 , SnO 2 , TeO 2 、TiO 2 or Ta 2 o 3 etc., and the refractive index of the metal oxide is greater than 1.7, preferably greater than 2.0, and the doping ratio of the metal oxide is between 10% and 90% (wt%), preferably between 30% and 70%. The resistance of the transparent electrode of the present invention is less than 50Ω / sq, preferably less than 20Ω / sq, and in the range of visible light, the transmittance is greater than 50%, preferably greater than 70%. In addition, the transparent electrode of the present invention can be used as an anode and / or a cathode in an orga...

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Abstract

The invention provides a transparent electrode and an organic electroluminescence element which contains the transparent electrode, wherein the transparent electrode comprises an electrode layer and is made from a metal material and a metal oxide through vapor deposition. The transparent electrode of the invention has excellent electric conductivity, transmittance and deflection, and is capable of being used as an anode or a cathode of the organic electroluminescence element. Further, the transparent electrode comprises an extra light removing layer which is formed on the transparent electrode, thereby increasing the transmittance of the transparent electrode.

Description

technical field [0001] The invention relates to an organic electroluminescent element, in particular to an improved electrode structure of the organic electroluminescent element. Background technique [0002] In recent years, with the advancement of electronic product development technology and its increasingly wide application, such as the advent of mobile phones, PDAs and notebook computers, the demand for flat-panel displays with smaller volume and power consumption characteristics compared with traditional displays Increasing day by day, become one of the most important electronic application products at present. Among flat-panel displays, organic electroluminescent elements will undoubtedly become the best choice for next-generation flat-panel displays due to their characteristics such as self-luminescence, high brightness, wide viewing angle, high response speed, and easy process. [0003] The organic electroluminescent element is mainly composed of a multi-layer orga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/54H01L51/52H01L51/50
Inventor 李孟庭黄月娟陈曼玲曾美榕
Owner IND TECH RES INST