Achieving a balance between small singlet-triplet energy splitting and high fluorescence radiative rate in a quinoxaline-based orange-red thermally activated delayed fluorescence emitter

Ling Yu; Zhongbin Wu; Guohua Xie; Cheng Zhong; Zece Zhu; Hengjiang Cong; Dongge Ma; Chuluo Yang

doi:10.1039/c6cc05203g

Achieving a balance between small singlet-triplet energy splitting and high fluorescence radiative rate in a quinoxaline-based orange-red thermally activated delayed fluorescence emitter

Ling Yu, Zhongbin Wu, Guohua Xie, Cheng Zhong, Zece Zhu, Hengjiang Cong, Dongge Ma, Chuluo Yang

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

110 Scopus citations

Abstract

A new orange-red thermally activated delayed fluorescence (TADF) emitter is designed and synthesized by incorporating a fluorine-substituted quinoxaline as an electron-acceptor and a phenoxazine as an electron-donor. The rational molecular design enables small singlet-triplet energy splitting (ΔE_ST) and high fluorescence radiative rate (kSr) for long-wavelength TADF emitters. The organic light emitting diodes (OLEDs) employing the new TADF emitter achieve maximum external quantum efficiencies (EQEs) of 13.9% and 9.0% for the vacuum- and solution-processed OLEDs, respectively.

Original language	English
Pages (from-to)	11012-11015
Number of pages	4
Journal	Chemical Communications
Volume	52
Issue number	73
DOIs	https://doi.org/10.1039/c6cc05203g
State	Published - 2016
Externally published	Yes

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title = "Achieving a balance between small singlet-triplet energy splitting and high fluorescence radiative rate in a quinoxaline-based orange-red thermally activated delayed fluorescence emitter",

abstract = "A new orange-red thermally activated delayed fluorescence (TADF) emitter is designed and synthesized by incorporating a fluorine-substituted quinoxaline as an electron-acceptor and a phenoxazine as an electron-donor. The rational molecular design enables small singlet-triplet energy splitting (ΔEST) and high fluorescence radiative rate (kSr) for long-wavelength TADF emitters. The organic light emitting diodes (OLEDs) employing the new TADF emitter achieve maximum external quantum efficiencies (EQEs) of 13.9% and 9.0% for the vacuum- and solution-processed OLEDs, respectively.",

author = "Ling Yu and Zhongbin Wu and Guohua Xie and Cheng Zhong and Zece Zhu and Hengjiang Cong and Dongge Ma and Chuluo Yang",

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year = "2016",

doi = "10.1039/c6cc05203g",

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T1 - Achieving a balance between small singlet-triplet energy splitting and high fluorescence radiative rate in a quinoxaline-based orange-red thermally activated delayed fluorescence emitter

AU - Yu, Ling

AU - Wu, Zhongbin

AU - Xie, Guohua

AU - Zhong, Cheng

AU - Zhu, Zece

AU - Cong, Hengjiang

AU - Ma, Dongge

AU - Yang, Chuluo

PY - 2016

Y1 - 2016

N2 - A new orange-red thermally activated delayed fluorescence (TADF) emitter is designed and synthesized by incorporating a fluorine-substituted quinoxaline as an electron-acceptor and a phenoxazine as an electron-donor. The rational molecular design enables small singlet-triplet energy splitting (ΔEST) and high fluorescence radiative rate (kSr) for long-wavelength TADF emitters. The organic light emitting diodes (OLEDs) employing the new TADF emitter achieve maximum external quantum efficiencies (EQEs) of 13.9% and 9.0% for the vacuum- and solution-processed OLEDs, respectively.

AB - A new orange-red thermally activated delayed fluorescence (TADF) emitter is designed and synthesized by incorporating a fluorine-substituted quinoxaline as an electron-acceptor and a phenoxazine as an electron-donor. The rational molecular design enables small singlet-triplet energy splitting (ΔEST) and high fluorescence radiative rate (kSr) for long-wavelength TADF emitters. The organic light emitting diodes (OLEDs) employing the new TADF emitter achieve maximum external quantum efficiencies (EQEs) of 13.9% and 9.0% for the vacuum- and solution-processed OLEDs, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84984878712&partnerID=8YFLogxK

U2 - 10.1039/c6cc05203g

DO - 10.1039/c6cc05203g

M3 - 文章

AN - SCOPUS:84984878712

SN - 1359-7345

VL - 52

SP - 11012

EP - 11015

JO - Chemical Communications

JF - Chemical Communications

IS - 73

ER -

Achieving a balance between small singlet-triplet energy splitting and high fluorescence radiative rate in a quinoxaline-based orange-red thermally activated delayed fluorescence emitter

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