Truxene-Centered Electron Acceptors for Non-Fullerene Solar Cells: Alkyl Chain and Branched Arm Engineering

Kaiwen Lin; Wenhao Du; Shuqi Shen; Haoshen Liang; Xiaobin Zhang; Manjun Xiao; Yuehui Wang

doi:10.3390/ijms231810402

International Journal of Molecular Sciences (Sep 2022)

Truxene-Centered Electron Acceptors for Non-Fullerene Solar Cells: Alkyl Chain and Branched Arm Engineering

Kaiwen Lin,
Wenhao Du,
Shuqi Shen,
Haoshen Liang,
Xiaobin Zhang,
Manjun Xiao,
Yuehui Wang

Affiliations

Kaiwen Lin: Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China
Wenhao Du: Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China
Shuqi Shen: Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China
Haoshen Liang: Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China
Xiaobin Zhang: Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China
Manjun Xiao: Key Lab of Environment-Friendly Chemistry and Application (Ministry of Education), College of Chemistry, Xiangtan University, Xiangtan 411105, China
Yuehui Wang: Department of Materials and Food, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan 528402, China

DOI: https://doi.org/10.3390/ijms231810402
Journal volume & issue: Vol. 23, no. 18
p. 10402

Abstract

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A series of symmetrical truxene-centered and 3-ethylrhodanine end-capped electron acceptors with high absorption coefficient, namely Tr(Hex)6-3RD, Tr(Dec)6-3RD, and Tr(Hex)6-6RD, were prepared and constructed for non-fullerene solar cells. To satisfy solution-processability, multiple energy levels, and suitable morphology, these three acceptors were comparatively studied through alkyl chain (hexyl/decyl) and branched-arm engineering (three/six branched arms). The six-bladed propeller acceptor of Tr(Hex)6-6RD recorded the power conversion efficiency (PCE) of 1.1% blending with PTB7-Th without additional additives and post-processing. This work highly broadens the potential applications of star-shaped truxene building blocks in the fields of organic electronics.

Published in International Journal of Molecular Sciences

ISSN: 1661-6596 (Print); 1422-0067 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Biology (General); Science: Chemistry
Website: http://www.mdpi.com/journal/ijms

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