High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off

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

4 Scopus Citations
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Author(s)

  • Jong Uk Kim
  • Michael Y. Wong
  • Shiv Kumar
  • Oliver G. Hayes
  • Finlay Duncan
  • Ben Yiu-Wing Wong
  • Hao Ye
  • Lin-Song Cui
  • Hajime Nakanotani
  • Eli Zysman-Colman
  • Chihaya Adachi

Detail(s)

Original languageEnglish
Pages (from-to)1225-1228
Number of pages4
Journal / PublicationChemistry Letters
Volume48
Issue number10
Online published21 Sept 2019
Publication statusPublished - 5 Oct 2019
Externally publishedYes

Abstract

We designed and synthesized two new ambipolar host materials, namely CzPO and Cz3PO. Combining CzPO and Cz3PO with CzTRZ2 as the emitter resulted in improved maximum external quantum efficiencies of 13.1% and 13.2%, respectively, together with small efficiency roll-offs, while the device based on bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO) as host showed a much more pronounced efficiency roll-off. © 2019 The Chemical Society of Japan

Research Area(s)

  • Ambipolar host, Organic light-emitting diode (OLED), Thermally activated delayed fluorescence (TADF)

Citation Format(s)

High-triplet-energy Bipolar Host Materials Based on Phosphine Oxide Derivatives for Efficient Sky-blue Thermally Activated Delayed Fluorescence Organic Light-emitting Diodes with Reduced Roll-off. / Kim, Jong Uk; Wong, Michael Y.; Kumar, Shiv et al.
In: Chemistry Letters, Vol. 48, No. 10, 05.10.2019, p. 1225-1228.

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