Efficient orange light-emitting electrochemical cells

Research output: Contribution to journalArticlepeer-review


  • Daniel Tordera
  • Antonio Pertegás
  • Nail M. Shavaleev
  • Rosario Scopelliti
  • Enrique Ortí
  • Henk J. Bolink
  • Etienne Baranoff
  • Michael Grätzel
  • Mohammad K. Nazeeruddin

Colleges, School and Institutes

External organisations

  • Ecole Polytechnique Federale de Lausanne
  • Fundació General de la Universitat de Valencia (FGUV)
  • Instituto de Ciencia Molecular, Universidad de Valencia
  • Universidad de Valencia


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%. This journal is


Original languageEnglish
Pages (from-to)19264-19268
Number of pages5
JournalJournal of Materials Chemistry
Issue number36
Publication statusPublished - 28 Sep 2012

ASJC Scopus subject areas