3,6-Diarylcarbazole derivatives as a host material in organic electrophosphorescent diodes

Kenji Muneuchi, Masaomi Sasaki, Hiroyuki Sasabe, Chihaya Adachi

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3 Citations (Scopus)

Abstract

We synthesized 3,6-diarylcarbazole (CBZ) derivatives and investigated their thin-film optical (i.e., absorption, fluorescence and phosphorescence) properties and electroluminescence characteristics. We fabricated phosphorescent organic light-emitting diodes (OLEDs) employing CBZ derivatives as the host and fac-tris(2-phenypyridine)iridium [Ir(ppy)3] as the guest at a doping concentration of 6wt%. These devices exhibited maximum external quantum efficiencies (ηext) in the range 1 to 11%, depending on the host. In particular, the OLED with CBZ7 as the host exhibited the highest ηext of 11.2% and a maximum power conversion efficiency (ηenergy) of 25 lm/W.

Original languageEnglish
Article number080208
JournalJapanese journal of applied physics
Volume49
Issue number8 PART 1
DOIs
Publication statusPublished - Aug 1 2010

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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