Pendant Y-series Acceptors with Well-controlled Morphology Enabled High Performance and Stability All-polymer Solar Cells

Hao-Yong, S.; Xing, L.; Chen, M.; Chen, Z.; Deng, M.; Xu, L.; Wu, X.; Yang, X.; Shao, Y.; Papkovskaya, E.D.; Luponosov, Y.; Sun, R.; Min, J.

Авторы: Hao-Yong Shi, Xing Lu, Chen Ming-Xia, Chen Zhi-Yi, Deng Ming-Wei, Xu Lin-Yong, Wu Xiao-Hei, Yang Xin-Rong, Shao Yi-Ming, Papkovskaya Elizaveta D., Luponosov Yuriy, Sun Rui, Min Jie
Журнал: Chinese Journal of Polymer Science (English Edition)
Том: 43
Номер: 9
Год издания: 2025
Издательство: Springer Verlag
Местоположение издательства: Germany
Первая страница: 1516
Последняя страница: 1526
DOI: 10.1007/s10118-025-3367-x
Аннотация: Polymer acceptor configuration and aggregation behavior are critical in determining the photovoltaic performance of all-polymer solar cells (all-PSCs). Effectively manipulating polymer self-aggregation through structural design to optimize the blend morphology remains challenging. Herein, we present a simple yet effective design strategy to modulate the aggregation behavior of the Y-series-based polymer acceptor PY-V-γ by introducing a pendant-fluorinated Y-series acceptor (Y2F-ET) into the main-conjugated backbone. Two random copolymer acceptors (PY-EY-5 and PY-EY-20) were synthesized with varying molar fractions of Y2F-ET pendant monomers. Our findings revealed that both the solution-phase and solid-state aggregation behaviors were progressively suppressed as the Y2F-ET content increased. Compared to the highly selfaggregating PY-V-γ-based all-PSCs, the more amorphous PY-EY-5 enabled devices to achieve an increased device efficiency from 17.31% to 18.45%, which is attributed to the slightly smaller polymer phase-separation domain sizes and reduced molecular aggregation in the PM6:PY-EY5 blend. Moreover, the finely tuned blend morphology exhibited superior thermal stability, underscoring the significant advantages of the Y-series pendant random copolymerization approach.
Добавил в систему: Лупоносов Юрий Николаевич

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Pendant Y-series Acceptors with Well-controlled Morphology Enabled High Performance and Stability All-polymer Solar Cellsстатья

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