Color Tuning of Avobenzone Boron Difluoride as an Emitter to Achieve Full-Color Emission

Hin Wai Mo, Youichi Tsuchiya, Yan Geng, Takehiro Sagawa, Chika Kikuchi, Hajime Nakanotani, Fuyuki Ito, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

Organic light-emitting diodes (OLEDs) displaying a wide range of emission colors with emission peaks from 450 to 665 nm using a single emitting material, avobenzone boron difluoride (AVB-BF2), are reported. Color tuning is achieved by controlling the aggregation of AVB-BF2 and the formation of a “triadic” exciplex of an AVB-BF2 dimer and a host molecule. Various electroluminescent devices containing AVB-BF2 cover the whole visible light spectrum and a white-emitting device with CIE coordinates of (0.35, 0.37) is obtained with a single emitting material in a single emissive layer. Furthermore, an exceptionally high external quantum efficiency of nearly 13% is achieved for a green-emitting OLED because AVB-BF2 exhibits thermally activated delayed fluorescence by forming the exciplex.

Original languageEnglish
Pages (from-to)6703-6710
Number of pages8
JournalAdvanced Functional Materials
Volume26
Issue number37
DOIs
Publication statusPublished - Oct 4 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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