Novel blue fluorescent emitters structured by linking triphenylamine and anthracene derivatives for organic light-emitting devices with EQE exceeding 5%
Abstract
Achieving an external quantum efficiency exceeding 5% for traditional blue fluorescent organic light emitting devices (OLEDs) is still a current challenge due to the 25% limit of the radiative exciton yield. Bipolar organic molecules with a special hybrid local-excited and charge-transfer state have showed huge potential to address this issue. Herein, we designed and synthesized two novel bipolar compounds, namely TPA-AN-NA and TPA-AN-TFP, which were structured by simply linking a donor of triphenylamine (TPA) and both acceptors of anthracene derivatives. Both resulting compounds show good blue emission with emission peaks at 468 and 471 nm and photoluminescence quantum yields of 30.68 and 23.96% in thin films for TPA-AN-NA and TPA-AN-TFP, respectively. They also exhibit good solubility and can dissolve in several organic solvents with different polarities. Further, the fabricated blue OLEDs with TPA-AN-NA and TPA-AN-TFP as emitters also realize the corresponding blue emission well with electroluminescence peaks at 464 and 472 nm, respectively. The TPA-AN-NA-based blue device achieves a high external quantum efficiency of 5.44% and a radiative exciton yield of 56.68%, exceeding the theoretical limit.
- Authors:
-
[1];
[2];
[2];
- Taiyuan Univ. of Technology, Taiyuan (China). Key Lab. of Interface Science and Engineering in Advanced Materials, and Ministry of Education
- Taiyuan Univ. of Technology; Taiyuan (China). Key Lab. of Interface Science and Engineering in Advanced Materials, and Ministry of Education
- Ames; USA; Iowa State Univ., Ames, IA (United States). Microelectronics Research Canter and Electrical & Computer Engineering Dept.
- Ames Lab., and Iowa State Univ., Ames, IA (United States). Physics & Astronomy Dept.
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1569738
- Alternate Identifier(s):
- OSTI ID: 1559348
- Report Number(s):
- IS-J 10035
Journal ID: ISSN 2050-7526; JMCCCX
- Grant/Contract Number:
- 61705156; 21071108; 60976018; 61605138; 61775155; AC 02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry C
- Additional Journal Information:
- Journal Volume: 7; Journal Issue: 35; Journal ID: ISSN 2050-7526
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Zhang, Jing, Zhao, Yaping, Xu, Huixia, Zhang, Di, Miao, Yanqin, Shinar, Ruth, Shinar, Joseph, Wang, Hua, Xu, Bingshe, and Wu, Yucheng. Novel blue fluorescent emitters structured by linking triphenylamine and anthracene derivatives for organic light-emitting devices with EQE exceeding 5%. United States: N. p., 2019.
Web. doi:10.1039/C9TC02773D.
Zhang, Jing, Zhao, Yaping, Xu, Huixia, Zhang, Di, Miao, Yanqin, Shinar, Ruth, Shinar, Joseph, Wang, Hua, Xu, Bingshe, & Wu, Yucheng. Novel blue fluorescent emitters structured by linking triphenylamine and anthracene derivatives for organic light-emitting devices with EQE exceeding 5%. United States. doi:10.1039/C9TC02773D.
Zhang, Jing, Zhao, Yaping, Xu, Huixia, Zhang, Di, Miao, Yanqin, Shinar, Ruth, Shinar, Joseph, Wang, Hua, Xu, Bingshe, and Wu, Yucheng. Thu .
"Novel blue fluorescent emitters structured by linking triphenylamine and anthracene derivatives for organic light-emitting devices with EQE exceeding 5%". United States. doi:10.1039/C9TC02773D. https://www.osti.gov/servlets/purl/1569738.
@article{osti_1569738,
title = {Novel blue fluorescent emitters structured by linking triphenylamine and anthracene derivatives for organic light-emitting devices with EQE exceeding 5%},
author = {Zhang, Jing and Zhao, Yaping and Xu, Huixia and Zhang, Di and Miao, Yanqin and Shinar, Ruth and Shinar, Joseph and Wang, Hua and Xu, Bingshe and Wu, Yucheng},
abstractNote = {Achieving an external quantum efficiency exceeding 5% for traditional blue fluorescent organic light emitting devices (OLEDs) is still a current challenge due to the 25% limit of the radiative exciton yield. Bipolar organic molecules with a special hybrid local-excited and charge-transfer state have showed huge potential to address this issue. Herein, we designed and synthesized two novel bipolar compounds, namely TPA-AN-NA and TPA-AN-TFP, which were structured by simply linking a donor of triphenylamine (TPA) and both acceptors of anthracene derivatives. Both resulting compounds show good blue emission with emission peaks at 468 and 471 nm and photoluminescence quantum yields of 30.68 and 23.96% in thin films for TPA-AN-NA and TPA-AN-TFP, respectively. They also exhibit good solubility and can dissolve in several organic solvents with different polarities. Further, the fabricated blue OLEDs with TPA-AN-NA and TPA-AN-TFP as emitters also realize the corresponding blue emission well with electroluminescence peaks at 464 and 472 nm, respectively. The TPA-AN-NA-based blue device achieves a high external quantum efficiency of 5.44% and a radiative exciton yield of 56.68%, exceeding the theoretical limit.},
doi = {10.1039/C9TC02773D},
journal = {Journal of Materials Chemistry C},
number = 35,
volume = 7,
place = {United States},
year = {2019},
month = {8}
}
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