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- Title
Long-chain anionic surfactants enabling stable perovskite/silicon tandems with greatly suppressed stress corrosion.
- Authors
Wang, Xinlong; Ying, Zhiqin; Zheng, Jingming; Li, Xin; Zhang, Zhipeng; Xiao, Chuanxiao; Chen, Ying; Wu, Ming; Yang, Zhenhai; Sun, Jingsong; Xu, Jia-Ru; Sheng, Jiang; Zeng, Yuheng; Yang, Xi; Xing, Guichuan; Ye, Jichun
- Abstract
Despite the remarkable rise in the efficiency of perovskite-based solar cells, the stress-induced intrinsic instability of perovskite active layers is widely identified as a critical hurdle for upcoming commercialization. Herein, a long-alkyl-chain anionic surfactant additive is introduced to chemically ameliorate the perovskite crystallization kinetics via surface segregation and micellization, and physically construct a glue-like scaffold to eliminate the residual stresses. As a result, benefiting from the reduced defects, suppressed ion migration and improved energy level alignment, the corresponding unencapsulated perovskite single-junction and perovskite/silicon tandem devices exhibit impressive operational stability with 85.7% and 93.6% of their performance after 3000 h and 450 h at maximum power point tracking under continuous light illumination, providing one of the best stabilities to date under similar test conditions, respectively. Stress-induced instability of perovskite layers is a critical hurdle for commercialization of perovskite solar cells. Here, the authors introduce a long-alkyl-chain anionic surfactant additive to chemically ameliorate crystallization kinetics and demonstrate devices with long operational stability.
- Subjects
STRESS corrosion; ANIONIC surfactants; PEROVSKITE; SOLAR cell efficiency; CRYSTALLIZATION kinetics; SURFACE segregation
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-37877-z