Aging effect on balance of carrier injection in polymer light-emitting diodes

  • Keran Zhang
  • , Lin Ke
  • , Furong Zhu
  • , Bee Ling Low
  • , Soojin Chua

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

Abstract

We propose an approach to study the oxidation effect on the degradation process of phenyl-substituted polymer based light emitting diodes (LEDs) using acceleration aging of device in air. The poly(styrene sulfonate)-doped poly(3,4-ethylene dioxythiophene) (PEDOT) is used as hole transporting layer. We have made conventional balanced electron-hole injection together with electron and hole injection dominant devices. The acceleration aging of these devices in air was performed at a fixed current density that produces the maximum electroluminescence (EL) efficiency of the corresponding LEDs. The results show that the fast decrease of electron current in these devices with regard to the aging in air was mainly responsible for reduction of EL efficiency. This implies that the degradation of the polymer LED is due to the deterioration of the cathode contact for carrier injection.

Original languageEnglish
Title of host publication2001 6th International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2001 - Proceedings
EditorsHiroshi Iwai, Xin-Ping Qu, Bing-Zong Li, Guo-Ping Ru, Paul Yu
PublisherIEEE
Pages1262-1265
Number of pages4
ISBN (Electronic)0780365208, 9780780365209
DOIs
Publication statusPublished - 22 Oct 2001
Event6th International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2001 - Shanghai, China
Duration: 22 Oct 200125 Oct 2001
https://ieeexplore.ieee.org/xpl/conhome/7712/proceeding

Publication series

NameInternational Conference on Solid-State and Integrated Circuit Technology, ICSICT Proceedings

Conference

Conference6th International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2001
Country/TerritoryChina
CityShanghai
Period22/10/0125/10/01
Internet address

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

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