Highly efficient organic light-emitting diode based on a hidden thermally activated delayed fluorescence channel in a heptazine derivative

Jie Li, Tetsuya Nakagawa, James Macdonald, Qisheng Zhang, Hiroko Nomura, Hiroshi Miyazaki, Chihaya Adachi

Research output: Contribution to journalArticle

273 Citations (Scopus)

Abstract

An orange-red organic light-emitting diode containing a heptazine derivative exhibits high performance with a maximum external quantum efficiency of 17.5 ± 1.3% and a peak luminance of 17000 ± 1600 cd m -2 without any light out-coupling enhancement. The high electroluminescence performance can be ascribed to the presence of an efficient up-conversion channel from the lowest triplet state to the lowest singlet state.

Original languageEnglish
Pages (from-to)3319-3323
Number of pages5
JournalAdvanced Materials
Volume25
Issue number24
DOIs
Publication statusPublished - Jun 25 2013

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Electroluminescence
Organic light emitting diodes (OLED)
Quantum efficiency
Luminance
Fluorescence
Derivatives
heptazine

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Highly efficient organic light-emitting diode based on a hidden thermally activated delayed fluorescence channel in a heptazine derivative. / Li, Jie; Nakagawa, Tetsuya; Macdonald, James; Zhang, Qisheng; Nomura, Hiroko; Miyazaki, Hiroshi; Adachi, Chihaya.

In: Advanced Materials, Vol. 25, No. 24, 25.06.2013, p. 3319-3323.

Research output: Contribution to journalArticle

Li, Jie ; Nakagawa, Tetsuya ; Macdonald, James ; Zhang, Qisheng ; Nomura, Hiroko ; Miyazaki, Hiroshi ; Adachi, Chihaya. / Highly efficient organic light-emitting diode based on a hidden thermally activated delayed fluorescence channel in a heptazine derivative. In: Advanced Materials. 2013 ; Vol. 25, No. 24. pp. 3319-3323.
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