An electroluminescence efficiency of 30.3% for a yellow thermally activated delayed fluorescence emitter with a high horizontal emitting dipole ratio

Yan Qing Tang; Jing Xiong Zhou; Yan Qing Li; De Zhi Yang; Xin Yi Zeng; Kai Zhang; Yi Hui He; Hao Ren; Dong Ge Ma; Jian Xin Tang

doi:10.1039/d2tc04968f

An electroluminescence efficiency of 30.3% for a yellow thermally activated delayed fluorescence emitter with a high horizontal emitting dipole ratio

Yan Qing Tang
, Jing Xiong Zhou
, Yan Qing Li^*
, De Zhi Yang
, Xin Yi Zeng
, Kai Zhang
, Yi Hui He
, Hao Ren
, Dong Ge Ma^*
, Jian Xin Tang^*

^*Corresponding author for this work

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

4 Scopus citations

Abstract

Thermally activated delayed fluorescence (TADF) emitters with a high horizontal emitting dipole ratio (Θ_‖) remain a hot spot in the application of organic light-emitting diodes (OLEDs), which may achieve an extremely high external quantum efficiency (EQE). Herein, two yellow TADF emitters, 3,6,11-triTPA-BPQ and 3,6,12-triTPA-BPQ based on the triphenylamine (TPA) donor, have been synthesized by reasonably introducing nitrogen atoms into different positions of the acceptor core. Both emitters exhibit high horizontal emitting dipole ratios of 92% in doped organic films with photoluminescence quantum yields (Φ_PL) of 94.0% and 78.4%, respectively. Because of high Φ_PL and high light out-coupling ratio induced by high Θ_‖ for 3,6,11-triTPA-BPQ, yellow OLEDs using this emitter achieve a maximum external quantum efficiency of 30.3%, which provides a novel way to boost the efficiency of yellow TADF-OLEDs.

Original language	English
Pages (from-to)	6018-6025
Number of pages	8
Journal	Journal of Materials Chemistry C
Volume	11
Issue number	18
DOIs	https://doi.org/10.1039/d2tc04968f
State	Published - 6 Apr 2023
Externally published	Yes

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@article{6d84c48d2dee45b49d721892244170fc,

title = "An electroluminescence efficiency of 30.3\% for a yellow thermally activated delayed fluorescence emitter with a high horizontal emitting dipole ratio",

abstract = "Thermally activated delayed fluorescence (TADF) emitters with a high horizontal emitting dipole ratio (Θ‖) remain a hot spot in the application of organic light-emitting diodes (OLEDs), which may achieve an extremely high external quantum efficiency (EQE). Herein, two yellow TADF emitters, 3,6,11-triTPA-BPQ and 3,6,12-triTPA-BPQ based on the triphenylamine (TPA) donor, have been synthesized by reasonably introducing nitrogen atoms into different positions of the acceptor core. Both emitters exhibit high horizontal emitting dipole ratios of 92\% in doped organic films with photoluminescence quantum yields (ΦPL) of 94.0\% and 78.4\%, respectively. Because of high ΦPL and high light out-coupling ratio induced by high Θ‖ for 3,6,11-triTPA-BPQ, yellow OLEDs using this emitter achieve a maximum external quantum efficiency of 30.3\%, which provides a novel way to boost the efficiency of yellow TADF-OLEDs.",

author = "Tang, \{Yan Qing\} and Zhou, \{Jing Xiong\} and Li, \{Yan Qing\} and Yang, \{De Zhi\} and Zeng, \{Xin Yi\} and Kai Zhang and He, \{Yi Hui\} and Hao Ren and Ma, \{Dong Ge\} and Tang, \{Jian Xin\}",

note = "Publisher Copyright: {\textcopyright} 2023 The Royal Society of Chemistry.",

year = "2023",

month = apr,

day = "6",

doi = "10.1039/d2tc04968f",

language = "英语",

volume = "11",

pages = "6018--6025",

journal = "Journal of Materials Chemistry C",

issn = "2050-7526",

publisher = "Royal Society of Chemistry",

number = "18",

}

TY - JOUR

T1 - An electroluminescence efficiency of 30.3% for a yellow thermally activated delayed fluorescence emitter with a high horizontal emitting dipole ratio

AU - Tang, Yan Qing

AU - Zhou, Jing Xiong

AU - Li, Yan Qing

AU - Yang, De Zhi

AU - Zeng, Xin Yi

AU - Zhang, Kai

AU - He, Yi Hui

AU - Ren, Hao

AU - Ma, Dong Ge

AU - Tang, Jian Xin

PY - 2023/4/6

Y1 - 2023/4/6

N2 - Thermally activated delayed fluorescence (TADF) emitters with a high horizontal emitting dipole ratio (Θ‖) remain a hot spot in the application of organic light-emitting diodes (OLEDs), which may achieve an extremely high external quantum efficiency (EQE). Herein, two yellow TADF emitters, 3,6,11-triTPA-BPQ and 3,6,12-triTPA-BPQ based on the triphenylamine (TPA) donor, have been synthesized by reasonably introducing nitrogen atoms into different positions of the acceptor core. Both emitters exhibit high horizontal emitting dipole ratios of 92% in doped organic films with photoluminescence quantum yields (ΦPL) of 94.0% and 78.4%, respectively. Because of high ΦPL and high light out-coupling ratio induced by high Θ‖ for 3,6,11-triTPA-BPQ, yellow OLEDs using this emitter achieve a maximum external quantum efficiency of 30.3%, which provides a novel way to boost the efficiency of yellow TADF-OLEDs.

AB - Thermally activated delayed fluorescence (TADF) emitters with a high horizontal emitting dipole ratio (Θ‖) remain a hot spot in the application of organic light-emitting diodes (OLEDs), which may achieve an extremely high external quantum efficiency (EQE). Herein, two yellow TADF emitters, 3,6,11-triTPA-BPQ and 3,6,12-triTPA-BPQ based on the triphenylamine (TPA) donor, have been synthesized by reasonably introducing nitrogen atoms into different positions of the acceptor core. Both emitters exhibit high horizontal emitting dipole ratios of 92% in doped organic films with photoluminescence quantum yields (ΦPL) of 94.0% and 78.4%, respectively. Because of high ΦPL and high light out-coupling ratio induced by high Θ‖ for 3,6,11-triTPA-BPQ, yellow OLEDs using this emitter achieve a maximum external quantum efficiency of 30.3%, which provides a novel way to boost the efficiency of yellow TADF-OLEDs.

UR - https://www.scopus.com/pages/publications/85153943258

U2 - 10.1039/d2tc04968f

DO - 10.1039/d2tc04968f

M3 - 文章

AN - SCOPUS:85153943258

SN - 2050-7526

VL - 11

SP - 6018

EP - 6025

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 18

ER -

An electroluminescence efficiency of 30.3% for a yellow thermally activated delayed fluorescence emitter with a high horizontal emitting dipole ratio

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