Статья

Mechanically robust and stretchable organic solar cells plasticized by small-molecule acceptors

Zhenye WangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaDi ZhangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaLvpeng YangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaOmar AllamSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USAYerun GaoWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaYang SuSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USAMeichen XuWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaSongmin MoDepartment of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong, Shantou University, Shantou, Guangdong, ChinaQinghe WuDepartment of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong, Shantou University, Shantou, Guangdong, ChinaZhi WangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaJunfeng LiuWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaJiayi HeWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaRui LiWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaXingwang JiaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaZhilin LiWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaLong YangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaMark WeberSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USAYu YuWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaXinliang ZhangWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaTobin J. MarksDepartment of Chemistry, Materials Research Center, Northwestern University, Evanston, IL, USANatalie StingelinSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USAJosh KacherSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USASeung Soon JangSchool of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USAAntonio FacchettiDepartment of Chemistry, Materials Research Center, Northwestern University, Evanston, IL, USAMing ShaoWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China

2025en

ABI

Аннотация

Emerging wearable devices would benefit from integrating ductile photovoltaic light-harvesting power sources. In this work, we report a small-molecule acceptor (SMA), also known as a non–fullerene acceptor (NFA), designed for stretchable organic solar cell ( s -OSC) blends with large mechanical compliance and performance. Blends of the organosilane-functionalized SMA BTP-Si4 with the polymer donor PNTB6-Cl achieved a power conversion efficiency (PCE) of >16% and ultimate strain (ε u ) of >95%. Typical SMAs suppress OSC blend ductility, but the addition of BTP-Si4 enhances it. Although BTP-Si4 is less crystalline than other SMAs, it retains considerable electron mobility and is highly miscible with PNTB6-Cl and is essential for enhancing ε u . Thus, s -OSCs with PCE > 14% and operating normally under various deformations (>80% PCE retention under an 80% strain) were demonstrated. Analysis of several SMA-polymer blends revealed general molecular structure–miscibility–stretchability relationships for designing ductile blends.

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Идентификаторы

DOI: 10.1126/science.adp9709

Цитирования и источники

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