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High-efficiency electroluminescence and amplified spontaneous emission from a thermally activated delayed fluorescent near-infrared emitter

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Title
High-efficiency electroluminescence and amplified spontaneous emission from a thermally activated delayed fluorescent near-infrared emitter
Author(s)
Dae-Hyeon Kim; Anthony D’Aléo; Xian-Kai Chen; Atula D. S. Sandanayaka; Dandan Yao; Li Zhao; Takeshi Komino; Elena Zaborova; Gabriel Canard; Youichi Tsuchiya; Eunyoung Choi; Jeong Weon Wu; Frédéric Fages; Jean-Luc Brédas; Jean-Charles Ribierre; Chihaya Adachi
Publication Date
2018-02
Journal
Nature Photonics, v.12, no.2, pp.98 - 104
Publisher
NATURE PUBLISHING GROUP
Abstract
Near-infrared organic light-emitting diodes and semiconductor lasers could benefit a variety of applications including night-vision displays, sensors and information-secured displays. Organic dyes can generate electroluminescence efficiently at visible wavelengths, but organic light-emitting diodes are still underperforming in the near-infrared region. Here, we report thermally activated delayed fluorescent organic light-emitting diodes that operate at near-infrared wavelengths with a maximum external quantum efficiency of nearly 10% using a boron difluoride curcuminoid derivative. As well as an effective upconversion from triplet to singlet excited states due to the non-adiabatic coupling effect, this donor–acceptor–donor compound also exhibits efficient amplified spontaneous emission. By controlling the polarity of the active medium, the maximum emission wavelength of the electroluminescence spectrum can be tuned from 700 to 780 nm. This study represents an important advance in near-infrared organic light-emitting diodes and the design of alternative molecular architectures for photonic applications based on thermally activated delayed fluorescence. © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
URI
https://pr.ibs.re.kr/handle/8788114/4324
ISSN
1749-4885
Appears in Collections:
Center for Quantum Nanoscience(양자나노과학 연구단) > Journal Papers (저널 논문)
Files in This Item:
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