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Multiphosphine-Oxide Hosts for Ultralow-Voltage-Driven True-Blue Thermally Activated Delayed Fluorescence Diodes with External Quantum Efficiency beyond 20%

  • Jing Zhang
  • , Dongxue Ding
  • , Ying Wei
  • , Fuquan Han
  • , Hui Xu
  • , Wei Huang
  • Heilongjiang University
  • Nanjing Tech University

Research output: Contribution to journalArticlepeer-review

160 Scopus citations

Abstract

Highly efficient low-voltage-driven true-blue thermally activated delayed fluorescence diodes are realized through employing a tri-phosphine oxide host (2,2′,4-tris(di(phenyl) phosphoryl)-diphenylether (DPETPO)) with a record external quantum efficiency of 23.0% and the lowest onset voltage of 2.8 V to date.

Original languageEnglish
Pages (from-to)479-485
Number of pages7
JournalAdvanced Materials
Volume28
Issue number3
DOIs
StatePublished - 20 Jan 2016
Externally publishedYes

Keywords

  • electroactivity
  • fluorescence diodes
  • phosphine oxide hosts
  • spatial function distribution
  • true-blue emission

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