Highly efficient triazine/carbazole-based host material for green phosphorescent organic light-emitting diodes with low efficiency roll-off

Mingming Hu, Yang Liu, Yi Chen, Wenxuan Song, Lei Gao, Haichuan Mu*, Jinhai Huang, Jianhua Su

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)
277 Downloads (Pure)

Abstract

Two novel host materials, 3-(dibenzo[b,d]furan-4-yl)-9-(4,6-diphenyl-1,3,5-triazin-2-yl)-9H-carbazole (BFTC) and 3-(dibenzo[b,d]thiophen-4-yl)-9-(4,6-diphenyl-1,3,5-triazin-2-yl)-9H-carbazole (BTTC) were designed and synthesized. These two compounds exhibited excellent physical properties with high thermal stabilities and reasonable HOMO-LUMO energy levels. Both of them were applied to fabricate green phosphorescent organic light emitting devices (PhOLEDs) as host materials, and the BTTC based device demonstrated outstanding electroluminescence performance with a maximum current efficiency, maximum power efficiency and external quantum efficiency of 69.3 cd A-1, 54.2 lm W-1 and 21.9%, respectively, suggesting that BTTC is a promising host for green PhOLEDs.

Original languageEnglish
Pages (from-to)7287-7292
Number of pages6
JournalRSC Advances
Volume7
Issue number12
Early online date23 Jan 2017
DOIs
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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