Solid-state white light-emitting electrochemical cells using iridium-based cationic transition metal complexes

Hai-Ching Su, Hsiao Fan Chen, Fu Chuan Fang, Chih Che Liu, Chung Chih Wu*, Ken Tsung Wong, Yi Hung Liu, Shie Ming Peng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

274 Scopus citations

Abstract

White electroluminescent (EL) emission from single-layered solid-state light-emitting electrochemical cells (LECs) based on host-guest cationic iridium complexes has been successfully demonstrated. The devices show white EL spectra (Commission Internationale de l'Eclairage coordinates ranging from (x, y) = (0,45, 0.40) to (0.35, 0.39) at 2,9-3.3 V with high color rendering indices up to 80. Peak external quantum efficiency and peak power efficiency of the white LEC reach 4% and 7.8 lm/W, respectively. These results suggest that white LECs based on host-guest cationic transition metal complexes may be a promising alternative for solid-state lighting technologies.

Original languageEnglish
Pages (from-to)3413-3419
Number of pages7
JournalJournal of the American Chemical Society
Volume130
Issue number11
DOIs
StatePublished - 19 Mar 2008

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