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

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...

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Veröffentlicht in:	Nature photonics Jg. 12; H. 2; S. 98 - 104
Hauptverfasser:	Dae-Hyeon, Kim, Anthony D’Aléo, Xian-Kai Chen, Atula D S Sandanayaka, Yao, Dandan, Zhao, Li, Komino, Takeshi, Zaborova, Elena, Canard, Gabriel, Tsuchiya, Youichi, Choi, Eunyoung, Jeong Weon Wu, Fages, Frédéric, Brédas, Jean-Luc, Jean-Charles Ribierre, Adachi, Chihaya
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	London Nature Publishing Group 01.02.2018
Schlagworte:	Active control Adiabatic Adiabatic flow Boron Coupling (molecular) Electroluminescence Emissions Emissions control Emitters Fluorescence I.R. radiation Lasers Light emitting diodes Near infrared radiation Organic light emitting diodes Photonics Polarity Quantum efficiency Semiconductor lasers Spontaneous emission Upconversion Wavelengths
ISSN:	1749-4885, 1749-4893
Online-Zugang:	Volltext
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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.
AbstractList	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.
Author	Xian-Kai Chen Tsuchiya, Youichi Zhao, Li Fages, Frédéric Choi, Eunyoung Jean-Charles Ribierre Yao, Dandan Atula D S Sandanayaka Brédas, Jean-Luc Canard, Gabriel Zaborova, Elena Adachi, Chihaya Dae-Hyeon, Kim Komino, Takeshi Jeong Weon Wu Anthony D’Aléo
Author_xml	– sequence: 1 givenname: Kim surname: Dae-Hyeon fullname: Dae-Hyeon, Kim – sequence: 2 fullname: Anthony D’Aléo – sequence: 3 fullname: Xian-Kai Chen – sequence: 4 fullname: Atula D S Sandanayaka – sequence: 5 givenname: Dandan surname: Yao fullname: Yao, Dandan – sequence: 6 givenname: Li surname: Zhao fullname: Zhao, Li – sequence: 7 givenname: Takeshi surname: Komino fullname: Komino, Takeshi – sequence: 8 givenname: Elena surname: Zaborova fullname: Zaborova, Elena – sequence: 9 givenname: Gabriel surname: Canard fullname: Canard, Gabriel – sequence: 10 givenname: Youichi surname: Tsuchiya fullname: Tsuchiya, Youichi – sequence: 11 givenname: Eunyoung surname: Choi fullname: Choi, Eunyoung – sequence: 12 fullname: Jeong Weon Wu – sequence: 13 givenname: Frédéric surname: Fages fullname: Fages, Frédéric – sequence: 14 givenname: Jean-Luc surname: Brédas fullname: Brédas, Jean-Luc – sequence: 15 fullname: Jean-Charles Ribierre – sequence: 16 givenname: Chihaya surname: Adachi fullname: Adachi, Chihaya
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Copyright	Copyright Nature Publishing Group Feb 2018
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Snippet	Near-infrared organic light-emitting diodes and semiconductor lasers could benefit a variety of applications including night-vision displays, sensors and...
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SubjectTerms	Active control Adiabatic Adiabatic flow Boron Coupling (molecular) Electroluminescence Emissions Emissions control Emitters Fluorescence I.R. radiation Lasers Light emitting diodes Near infrared radiation Organic light emitting diodes Photonics Polarity Quantum efficiency Semiconductor lasers Spontaneous emission Upconversion Wavelengths
Title	High-efficiency electroluminescence and amplified spontaneous emission from a thermally activated delayed fluorescent near-infrared emitter
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