Recombination zone of blue thermally activated delayed fluorescent devices

Kyoung Soo Yook, Sang Kyu Jeon, Jun Yeob Lee

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Recombination zone of blue thermally activated delayed fluorescent devices was identified by inserting a yellow sensitizer in the emitting layer made up of 1,3-bis(N-carbazolyl)benzene (mCP) and 4,6-di(9H-carbazol-9-yl)isophthalonitrile (DCzIPN) blue thermally activated delayed fluorescent emitter. Recombination of the mCP:DCzIPN emitting layer was mostly observed near electron transport layer at low doping concentration because of strong electron trapping effect by DCzIPN. Recombination zone of mCP:DczIPN emitting layer was broadened at high doping concentration by controlling electron density in the emitting layer.

Original languageEnglish
Pages (from-to)266-269
Number of pages4
JournalJournal of Luminescence
Volume169
DOIs
StatePublished - 1 Jan 2016

Keywords

  • Delayed fluorescent emitter
  • Electron trapping
  • Recombination zone
  • Sensitizer

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