首页|Enhancing Photovoltaic Performance of Nonfused-Ring Electron Acceptors via Asymmetric End-Group Engineering and Noncovalently Conformational Locks

Enhancing Photovoltaic Performance of Nonfused-Ring Electron Acceptors via Asymmetric End-Group Engineering and Noncovalently Conformational Locks

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By employing the asymmetric end-group engineering,an asymmetric nonfused-ring electron acceptor(NFREA)was designed and syn-thesized.Compared with the symmetric analogs(NoCA-17 and NoCA-18),NoCA-19 possesses broader light absorption range,more coplanar π-conjugated backbone,and appropriate crystallinity according to the experimental and theoretical results.The organic solar cells based on J52∶NoCA-19 exhibited a power conversion efficiency as high as 12.26％,which is much higher than those of J52∶NoCA-17(9.50％)and J52∶NoCA-18(11.77％),mainly due to more efficient exciton dissociation,better and balanced charge mobil-ity,suppressed recombination loss,shorter charge extraction time,longer charge carrier lifetimes,and more favorable blend film morphology.These findings demonstrate the great potential of asymmetric end-group engineering in exploring low-cost and high-performance NFREAs.

Organic solar cellsNonfused-ring electron acceptorsAsymmetric end-group engineeringNoncovalently conformational locksLow-cost acceptors

Bo Liu、Congqi Li、Xiaobin Gu、Yinghui Han、Zhixiang Wei、Yunhao Cai、Xin Zhang、Hui Huang、Yanping Huo

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School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou,Guangdong 510006,China

College of Materials Science and Opto-Electronic Technology & Center of Materials Science and Optoelectronics Engineering & CAS Center for Excellence in Topological Quantum Computation & CAS Key Laboratory of Vacuum Physics,University of Chinese Academy of Sciences,Beijing 100049,China

College Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China

Center for Excellence in Nanoscience(CAS)& Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS),National Center for Nanoscience and Technology,Beijing 100190,China

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国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家重点研发计划中国科学院重点研究项目中国科学院青年创新促进会项目中央高校基本科研业务费专项

21975055U20012225210335252120105006519253062018FYA 0305800XDPB08-22022165

2024

10.1002/cjoc.202300542

中国化学(英文版)
中国化学会 上海有机化学研究所

中国化学(英文版)

CSTPCD
影响因子：0.848
ISSN：1001-604X
年,卷(期)：2024.42(5)
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