Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving organic electro-luminescence device lifetime

A technology of device life and luminescence, which is applied in the direction of electroluminescence light source, electric light source, electrical components, etc., can solve the problems that affect the life of the device, interface instability, corrosion, etc., and achieve the effect of improving the life of the device

Inactive Publication Date: 2008-05-07
SUN YAT SEN UNIV
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Photo / electrochemical decay of organic materials. Organic materials are prone to photo / electrochemical reactions under working luminescence conditions, which cause changes in the material itself and its characteristics and affect the life of organic electroluminescent devices.
(3) The interface formed by the two materials in the device is unstable. Organic electroluminescent devices usually include indium tin oxide (ITO) transparent conductive anode / organic layer; organic layer / organic layer; organic layer / metal three interfaces, the device is in The characteristic change and failure of any one of the interfaces caused by work will affect the life of the device
However, metals with low work function often have relatively active chemical properties, and are easily corroded by oxygen and water in the air, resulting in rapid aging of devices.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving organic electro-luminescence device lifetime
  • Method for improving organic electro-luminescence device lifetime
  • Method for improving organic electro-luminescence device lifetime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Firstly, a conductive polymer hole injection layer with a thickness of about 40nm is formed by spin-coating on the carefully cleaned indium tin oxide (ITO) transparent conductive anode (1) substrate (2) Polyethylenedioxythiophene-polyphenylene Ethylene sulfonic acid (PEDOT:PSS) film is then placed in the vacuum chamber of the reactive ion etching machine, and the oxygen in the vacuum chamber is ionized by radio frequency discharge method to generate oxygen plasma to properly surface the surface of the conductive polymer hole injection layer. Treatment, oxygen plasma treatment power density is about 50mW / cm 2 , the air pressure is about 2.0Pa, the gas flow is about 40sccm, and the treatment time is 5 minutes and 8 minutes respectively, which can be formed on the surface of the conductive polymer hole injection layer (2) to improve its effective interaction with the hole transport layer (3). Nanoscale microstructures of contact and interface properties (e.g. Figure 3 sh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to a method for increasing the service life of organic electroluminescence device, characterized in processing oxygen plasma conducting high polymer material and injecting in strata dioxy ethylthiophene-polystyrolsulfon acid(PEDOT: PSS) surface, and improving work stability and service life of device. The device comprises an indium tin oxide transparent conducting positive pole(1) coated on glass, a conducting high polymer material cacity injecting layer(2), an organic material cavity transferring layer(3), an organic material emitting layer(4), a organic material electron transferring layer(5), a metal negative pole. The invention has effectively increase service life of device.

Description

technical field [0001] The invention relates to a method for improving the service life of an organic electroluminescence device, belonging to the technical field of organic electroluminescence. Background technique [0002] Organic light-emitting diodes (Organic Light-emitting diodes, referred to as OLEDs), as a new type of flat panel display technology and planar two-dimensional light source lighting technology, have both active light emission, wide viewing angle, full color, bendable, high Efficiency, low power consumption, low cost and many other advantages meet the requirements of display technology and green lighting technology in the development trend of mobile communication and information display in the information age. Its broad application prospects and breakthroughs in materials and devices in recent years have made it It has become one of the most competitive flat panel display technologies and lighting technologies. [0003] The research on OLEDs technology or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/10
Inventor 周翔周云飞袁永波连加荣庞宏启曹玲芳张洁
Owner SUN YAT SEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com