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

Hao-Yong Shi; Lu Xing; Ming-Xia Chen; Zhi-Yi Chen; Ming-Wei Deng; Lin-Yong Xu; Xiao-Hei Wu; Xin-Rong Yang; Yi-Ming Shao; Elizaveta D. Papkovskaya; Yuriy Luponosov; Rui Sun; Jie Min

doi:10.1007/s10118-025-3367-x

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

RESEARCH ARTICLE | Updated：2025-08-25

- Pendant Y-series Acceptors with Well-controlled Morphology Enabled High Performance and Stability All-polymer Solar Cells
- Pendant Y-series Acceptors with Well-controlled Morphology Enabled High Performance and Stability All-polymer Solar Cells
- 高分子科学（英文） 2025年43卷第9期页码：1516-1526
- Affiliations：
  
  a.The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China
  b.Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Moscow 117393, Russia
- Author bio：
  
  sun.rui@whu.edu.cn (R.S.)
  min.jie@whu.edu.cn (J.M.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (NSFC) (Nos. 22279094 and 22409149), Hubei Provincial Natural Science Foundation (No. 2024 AFB068), and Fundamental Research Funds for the Central Universities. We thank the beamline BL14 at Shanghai Synchrotron Radiation Facility (China) for providing the beam time and help during the experiment and the Core Facility of Wuhan University for the TEM and AFM measurements.;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-025-3367-x.
- DOI：10.1007/s10118-025-3367-x
  中图分类号：
- 收稿：2025-03-06，
  
  修回：2025-04-24，
  
  录用：2025-04-27，
  
  网络首发：2025-07-10，
  
  纸质出版：2025-09-05
- Accepted：
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Shi, H. Y.; Xing, L.; Chen, M. X.; Chen, Z. Y.; Deng, M. W.; Xu, L. Y.; Wu, X. H.; Yang, X. R.; Shao, Y. M.; Papkovskaya, E. D.; Luponosov, Y.; Sun, R.; Min, J. Pendant y-series acceptors with well-controlled morphology enabled high performance and stability all-polymer solar cells. Chinese J. Polym. Sci. 2025, 43, 1516–1526

Hao-Yong Shi, Lu Xing, Ming-Xia Chen, et al. Pendant Y-series Acceptors with Well-controlled Morphology Enabled High Performance and Stability All-polymer Solar Cells[J]. Chinese Journal of Polymer Science, 2025, 43(9): 1516-1526.
Shi, H. Y.; Xing, L.; Chen, M. X.; Chen, Z. Y.; Deng, M. W.; Xu, L. Y.; Wu, X. H.; Yang, X. R.; Shao, Y. M.; Papkovskaya, E. D.; Luponosov, Y.; Sun, R.; Min, J. Pendant y-series acceptors with well-controlled morphology enabled high performance and stability all-polymer solar cells. Chinese J. Polym. Sci. 2025, 43, 1516–1526 DOI： 10.1007/s10118-025-3367-x.

Hao-Yong Shi, Lu Xing, Ming-Xia Chen, et al. Pendant Y-series Acceptors with Well-controlled Morphology Enabled High Performance and Stability All-polymer Solar Cells[J]. Chinese Journal of Polymer Science, 2025, 43(9): 1516-1526. DOI： 10.1007/s10118-025-3367-x.

摘要

A new polymer acceptor featuring with Y-derivative pendants is designed to effectively enhance donor/acceptor compatibility and optimize blend morphology

enabling the fabrication of high-performance binary all-polymer solar cells with improved thermal stability.

Abstract

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-

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 self-aggregating PY-V-

-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-EY-5 blend. Moreover

the finely tuned blend morphology exhibited superior thermal stability

underscoring the significant advantages of the Y-series pendant random copolymerization approach.

关键词

Keywords

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