Issue 36, 2012

Efficient orange light-emitting electrochemical cells

Abstract

We report the first bis-cyclometalated cationic iridium(III) complex with N-aryl-substituted 1H-imidazo[4,5-f][1,10]phenanthroline. The complex emits yellow-orange phosphorescence with a maximum at 583 nm, a quantum yield of 43%, and an excited-state lifetime of 910 ns in argon-saturated dichloromethane. Optimized orange light-emitting electrochemical cells with the new Ir(III) complex exhibit fast turn-on, a peak luminance of 684 cd m−2 and a peak efficacy of 6.5 cd A−1; in 850 h of continuous operation their luminance and efficacy decrease only by 20%.

Graphical abstract: Efficient orange light-emitting electrochemical cells

Supplementary files

Article information

Article type
Paper
Submitted
19 Jun 2012
Accepted
26 Jul 2012
First published
26 Jul 2012

J. Mater. Chem., 2012,22, 19264-19268

Efficient orange light-emitting electrochemical cells

D. Tordera, A. Pertegás, N. M. Shavaleev, R. Scopelliti, E. Ortí, H. J. Bolink, E. Baranoff, M. Grätzel and M. K. Nazeeruddin, J. Mater. Chem., 2012, 22, 19264 DOI: 10.1039/C2JM33969B

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