A simple carbazole/oxadiazole hybrid molecule: An excellent bipolar host for green and red phosphorescent OLEDs

Youtian Tao, Qiang Wang, Chuluo Yang, Qi Wang, Zhiqiang Zhang, Taotao Zou, Jingui Qin, Dongge Ma

Research output: Contribution to journalArticlepeer-review

456 Scopus citations

Abstract

(Graph Presented) An enhanced performance: Electroluminescent devices incorporating a simple carbazole/oxadiazole hybrid as a host for dopants show maximum external quantum efficiencies (ηEQE) as high as 20.2% for green and 18.5% for deep red electrophosphorescence (see picture, J = current density). The host can be conveniently prepared and has good thermal and morphological stabilities and a high triplet energy level.

Original languageEnglish
Pages (from-to)8104-8107
Number of pages4
JournalAngewandte Chemie - International Edition
Volume47
Issue number42
DOIs
StatePublished - 6 Oct 2008
Externally publishedYes

Keywords

  • Charge carrier injection
  • Electron transport
  • Electrophosphorescence
  • Hole transport
  • Light-emitting diodes

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