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

doi:10.1002/adma.201300575

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

Applied Chemistry

Research output: Contribution to journal › Article › peer-review

347 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 language	English
Pages (from-to)	3319-3323
Number of pages	5
Journal	Advanced Materials
Volume	25
Issue number	24
DOIs	https://doi.org/10.1002/adma.201300575
Publication status	Published - Jun 25 2013

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201300575

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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 journal › Article › peer-review

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

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