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Terminally Chlorinated and Thiophene-linked Acceptor-Donor-Acceptor Structured 3D Acceptors with Versatile Processability for High-efficiency Organic Solar Cells
Chen, Hongbin1,2,3,4; Kan, Bin1; Wang, Peiran2,3,4; Feng, Wanying2,3,4; Li, Longyu2,3,4; Zhang, Shuchao2,3,4; Chen, Tianqi1; Yang, Yang5; Duan, Tainan6; Yao, Zhaoyang2,3,4
2023-08-15
摘要To exploit the potential of our newly developed three-dimensional (3D) dimerized acceptors, a series of chlorinated 3D acceptors (namely CH8-3/4/5) were reported by precisely tuning the position of chlorine (Cl) atom. The introduction of Cl atom in central unit affects the molecular conformation. Whereas, by replacing fluorinated terminal groups (CH8-3) with chlorinated terminal groups (CH8-4 and CH8-5), the red-shift absorption and enhanced crystallization are achieved. Benefiting from these, all devices received promising power conversion efficiencies (PCEs) over 16 % as well as decent thermal/photo-stabilities. Among them, PM6:CH8-4 based device yielded a best PCE of 17.58 %. Besides, the 3D merits with multi alkyl chains enable their versatile processability during the device preparation. Impressive PCEs of 17.27 % and 16.23 % could be achieved for non-halogen solvent processable devices prepared in glovebox and ambient, respectively. 2.88 cm(2) modules also obtained PCEs over 13 % via spin-coating and blade-coating methods, respectively. These results are among the best performance of dimerized acceptors. The decent performance of CH8-4 on small-area devices, modules and non-halogen solvent-processed devices highlights the versatile processing capability of our 3D acceptors, as well as their potential applications in the future.
关键词Chlorination Non-Halogen Solvent Organic Solar Cells Three-Dimension Acceptors Versatile Processability
DOI10.1002/anie.202307962
发表期刊ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
ISSN1433-7851
页码11
通讯作者Kan, Bin(kanbin04@nankai.edu.cn) ; Chen, Yongsheng(yschen99@nankai.edu.cn)
收录类别SCI
WOS记录号WOS:001049236000001
语种英语