Enhancing Photovoltaic Performance of Nonfused-Ring Electron
Acceptors via Asymmetric End-group Engineering and Noncova-lently
Conformational Locks
Bo Liu, Congqi Li, Xiaobin Gu, Yinghui Han,* Zhixiang Wei, Yunhao Cai,
Xin Zhang* and Yanping Huo*,
Chin. J. Chem. 2023, 41, XXX—XXX. DOI:
10.1002/cjoc.202300XXX
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The asymmetric end-group engineering was employed to construct a new
nonfused-ring electron acceptors (NFREAs), namely NoCA-19 containing two
distinct end-groups. Compared with symmetric acceptors, asymmetric
acceptor NoCA-19 possesses broad light absorption range, more coplanar
π-conjugated backbone, and appropriate crystallinity. Thus,
NoCA-19-based organic solar cell shows a considerable power conversion
efficiency of 12.26%, demonstrating the potential of asymmetric
end-group engineering in achieving low-cost and high-performance
NFREAs.
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