Nano-Micro Letters (Nov 2024)

Dual-Donor-Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

  • Anhai Liang,
  • Yuqing Sun,
  • Sein Chung,
  • Jiyeong Shin,
  • Kangbo Sun,
  • Chaofeng Zhu,
  • Jingjing Zhao,
  • Zhenmin Zhao,
  • Yufei Zhong,
  • Guangye Zhang,
  • Kilwon Cho,
  • Zhipeng Kan

DOI
https://doi.org/10.1007/s40820-024-01576-1
Journal volume & issue
Vol. 17, no. 1
pp. 1 – 13

Abstract

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Article Highlights By modulating the crystalline properties of the active layer with dual donors, the efficiency of organic solar cells reaches 19.23%. The introduction of PTzBI-dF suppresses the accumulation of traps and charge recombination, allowing ternary devices to maintain 82% of their initial power conversion efficiency (PCE) after illumination for 800 h. The dual-donor strategy for modulating the crystallinity of the active layer is applicable to a variety of Y6 derivatives, and the increase in PCE exceeds 1%.

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