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Molecular Crystals and Liquid Crystals Volume 728, 2021 - Issue 1: KJF International Conference on Organic Materials for Electronics and Photonics (KJF-ICOMEP 2021), Part 2
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Research Article

Small molecules based difluoroquinoxaline for organic solar cells

MinSung Konga Department of Industrial Chemistry, Pukyong National University, Busan, KoreaView further author information
,
Jihoon Leeb Department of Physics, Pukyong National University, Busan, KoreaView further author information
,
Suhee Songc Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South KoreaCorrespondence[email protected] [email protected] [email protected]
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,
Seong Soo Parka Department of Industrial Chemistry, Pukyong National University, Busan, KoreaView further author information
,
Won-Ki Leed Department of Polymer Engineering, Pukyong National University, Busan, KoreaView further author information
,
Jin Young Kimc Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South KoreaView further author information
,
Sung Heum Parkb Department of Physics, Pukyong National University, Busan, KoreaCorrespondence[email protected] [email protected] [email protected]
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&
Youngeup Jina Department of Industrial Chemistry, Pukyong National University, Busan, KoreaCorrespondence[email protected] [email protected] [email protected]
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Pages 45-51 | Published online: 01 Oct 2021
 
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Abstract

A new accepter unit, 2,3-didodecyl-6,7-difluoroquinoxaline, was prepared and utilized for the synthesis of electron acceptor–donor–acceptor materials for organic solar cells. 2,3-Didodecyl-6,7-difluoroquinoxaline unit was designed to introduce electron-withdrawing F atom in quinoxaline unit to improve deeper HOMO energy levels and higher VOC of the materials. The thienothiophene in conjugated materials has more excellent electron-donating ability to decrease of HOMO energy levels, which improves efficiency by increasing the VOC values.

Additional information

Funding

This research was supported by the BB21+ Project in 2021, and the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20194010201840).

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