Статья

Giant dimeric donors for all-giant-oligomer organic solar cells with efficiency over 16% and superior photostability

Caixuan WangUniversity of Chinese Academy of Sciences, Beijing, 100049, ChinaXiaoming MaKey Laboratory of Nanosystem and Hierarchical Fabrication of Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, ChinaDan DengKey Laboratory of Nanosystem and Hierarchical Fabrication of Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, China. [email protected]Hao ZhangKey Laboratory of Nanosystem and Hierarchical Fabrication of Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, ChinaRui SunThe Institute for Advanced Studies, Wuhan University, Wuhan, 430072, ChinaJianqi ZhangKey Laboratory of Nanosystem and Hierarchical Fabrication of Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, ChinaLili ZhangKey Laboratory of Nanosystem and Hierarchical Fabrication of Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, ChinaMengying WuCollege of Chemistry, Zhengzhou University, Zhengzhou, 450001, ChinaJie MinThe Institute for Advanced Studies, Wuhan University, Wuhan, 430072, ChinaZhiguo ZhangState Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China. [email protected]Zhixiang WeiKey Laboratory of Nanosystem and Hierarchical Fabrication of Chinese Academy of Sciences, National Center for Nanoscience and Technology, Beijing, 100190, China. [email protected]

2024en

ABI

Аннотация

Increasing the molecular weight while maintaining mono-dispersity has been proved crucial in innovating high-performance photovoltaic materials in giant oligomeric acceptors. However, developing efficient giant oligomeric donors to replace the batch-varied polymers remains challenging due to a lack of design principles. Here, by designing two unique isomeric rhodanine-based linkers, we successfully regulate the assembly behaviors of giant dimeric donors (G-Dimer-Ds) and fabricate the first all-giant-oligomer OSCs pairing with giant dimeric acceptor DY. Multiple characterizations demonstrate the small homo-molecular interaction with strong thermal-driven assembly capability in G-Dimer-D2 simultaneously facilitates reducing energetic disorder, improving charge transport and obtaining stable morphology, resulting in a satisfactory efficiency of 15.70% and long-term photostability with an extrapolated T80 of ca.10,000 hours, and further enhancing thermal-driven assembly promotes efficiency of 16.05%. Our results provide construction approaches on efficient giant donors, and propose a promising type of OSC with completely definite structures, high efficiency and superior stability. The development of giant oligomeric donors to replace batch-varied polymer remains challenging. Here, the authors regulate the assembly behaviour of giant dimeric donors, realizing all-giant-oligomeric-based organic solar cells with promising device efficiency and stability.

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Идентификаторы

DOI: 10.1038/s41467-024-52821-5

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar