Novel Bipolar Phenanthroimidazole Derivative Design for a Nondoped Deep-Blue Emitter with High Singlet Exciton Yields

Miao Chen, Yi Yuan, Ji Zheng, Wen-Cheng Chen, Long-Ji Shi, Ze-Lin Zhu, Feng Lu, Qing-Xiao Tong*, Qing-Dan Yang, Jun Ye, Mei-Yee Chan, Chun-Sing Lee*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

88 Citations (Scopus)

Abstract

Both the "D-A" and "two-in-one" strategies are simultaneously applied in designing deep-blue emitters. Two emitters show deep-blue emission with CIE coordinates of (0.15, 0.08) and (0.15, 0.06). Both of them exhibit excellent electro-luminescence performance, high singlet exciton yields (31%), and a small efficiency roll-off (external quantum efficiencies: less than 12% at 1000 cd m-2).
Original languageEnglish
Pages (from-to)1215-1219
JournalAdvanced Optical Materials
Volume3
Issue number9
DOIs
Publication statusPublished - 1 Sept 2015

Research Keywords

  • Bipolar molecules
  • Deep-blue diodes
  • Electroluminescence
  • Phenanthro[9,10-d]imidazole
  • Two-in-one

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