Non-doped solid-state white light-emitting electrochemical cells employing the microcavity effect

Guan Rung Lin, Hsiao Fan Chen, Hsien Chang Shih, Jia Hong Hsu, Yi Chang, Chih Hung Chiu, Chia Yu Cheng, Yun Shiuan Yeh, Hai-Ching Su*, Ken Tsung Wong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Solid-state white light-emitting electrochemical cells (LECs) have attracted research attention owing to their advantages of simple device structure, low operation voltage and compatibility with solution processes. In this work, we demonstrate a simple approach to obtain white electroluminescence (EL) from non-doped LECs based on a blue-emitting complex. With a relatively thicker emissive layer, red emission can be additionally enhanced by the microcavity effect when the recombination zone moves to appropriate positions. Hence, white EL can be harvested by combining blue emission from the complex and red emission from the microcavity effect. These non-doped white LECs show external quantum efficiencies and power efficiencies up to 5% and 12 lm W-1, respectively. These results show that efficient white EL can be obtained in simple non-doped LECs.

Original languageEnglish
Pages (from-to)6956-6962
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number10
DOIs
StatePublished - 14 Mar 2015

Fingerprint

Dive into the research topics of 'Non-doped solid-state white light-emitting electrochemical cells employing the microcavity effect'. Together they form a unique fingerprint.

Cite this