Bipolar carbazole/quinoxaline-based host materials for efficient red PhOLEDs

Mingming Hu, Qihao Xu, Yongxin Jiang, Haichuan Mu, Lei Gao, Peijun Hu, Jinhai Huang, Jianhua Su*

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Three bipolar hosts, 9-(4-(2,3-diphenylquinoxalin-6-yl)phenyl)-9H-carbazole (p-PQPC), 9-(3-(2,3-diphenylquinoxalin-6-yl)phenyl)-9H-carbazole (m-PQPC) and 9-(2-(2,3-diphenylquinoxalin-6-yl)phenyl)-9H-carbazole (o-PQPC) were designed, synthesized and characterized for red phosphorescence organic light emitting devices (PhOLEDs). These three compounds exhibited excellent physical properties with high thermal stabilities, reasonable HOMO-LUMO energy levels and balanced charge transport. All of them were applied to fabricate red PhOLEDs as host materials, and the p-PQPC based device demonstrated outstanding electroluminescence performance with the maximum current efficiency, power efficiency and external quantum efficiency of 21.9 cd/A, 15.4 lm/W and 12.2%, respectively, which suggesting that p-PQPC is a promising host for red PhOLEDs.

Original languageEnglish
Pages (from-to)185-192
JournalDyes and Pigments
Volume150
Early online date25 Aug 2017
DOIs
Publication statusPublished - 01 Mar 2018

Keywords

  • Bipolar hosts
  • Carbazole-quinoxaline
  • Red PhOLEDs

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

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