Novel spirofluorene/indole/carbazole-based hole transport materials with high triplet energy for efficient green phosphorescent organic light-emitting diodes

Qingchen Dong*, Hong Lian, Zhixiang Gao, Zeling Guo, Ning Xiang, Zheng Zhong, Hongen Guo, Jinhai Huang, Wai Yeung WONG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Three novel host materials 9-(4-(5-(4-(9-phenyl-9H-fluoren-9-yl)phenyl)-1H-indol-1-yl)phenyl)-9H-carbazole (C1), 9-(4-(9,9-diphenyl-9H-fluoren-4-yl)-1H-indol-1-yl)-9-phenyl-9H-carbazole (C2) and 9-(4-(5-(9,9-diphenyl-9H-fluoren-2-yl)-1H-indol-1-yl)phenyl)-9H-carbazole (C3) based on spirofluorene, indole and carbazole derivatives have been designed and synthesized. Their thermal, photophysical and electrochemical properties were fully investigated. The OLED devices with C1–C3 as host were fabricated to investigate their electroluminescent properties. Compound C3 obtained the best device performances with the maximum current efficiency of 45.2 cd A−1 and the maximum power efficiency of 23.2 lm W−1 for green phosphorescent organic light-emitting diodes.

Original languageEnglish
Pages (from-to)84-90
Number of pages7
JournalDyes and Pigments
Volume137
DOIs
Publication statusPublished - 1 Feb 2017

Scopus Subject Areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

User-Defined Keywords

  • Carbazole derivatives
  • Host materials
  • Indole derivatives
  • Phosphorescent organic light-emitting diodes
  • Spirofluorene derivatives

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