A supramolecular approach to improve the performance and operational stability of all-perovskite tandem solar cells

Xinxin Lian, Mingjing Jin, Weideren Dai, Yuanjiang Lv, Ming Luo, Ying Hu, Zhijie Wang, Haiyun Li, Chunyu Xu, Dongrui Jiang, Hao Min, Yifan Chen, Jin Chang, Tzu-Sen Su, Fei Ma, Yang Bai (), Hong Zhang (), Xiaoliang Mo () and Junhao Chu
Additional contact information
Xinxin Lian: Fudan University
Mingjing Jin: Shenzhen University of Advanced Technology (SUAT)
Weideren Dai: Shenzhen University of Advanced Technology (SUAT)
Yuanjiang Lv: Xi’an Jiaotong University
Ming Luo: Fudan University
Ying Hu: Fudan University
Zhijie Wang: Fudan University
Haiyun Li: Fudan University
Chunyu Xu: Fudan University
Dongrui Jiang: Fudan University
Hao Min: Nanjing Tech University
Yifan Chen: Fudan University
Jin Chang: Nanjing Tech University
Tzu-Sen Su: University of Science and Technology
Fei Ma: Xi’an Jiaotong University
Yang Bai: Shenzhen University of Advanced Technology (SUAT)
Hong Zhang: Fudan University
Xiaoliang Mo: Fudan University
Junhao Chu: Fudan University

Nature Communications, 2025, vol. 16, issue 1, 1-10

Abstract: Abstract Wide-bandgap perovskite is pivotal as a photoactive layer in the top cell of prevailing tandem solar cells. However, the intrinsic instability of wide-bandgap perovskite solar cells is predominantly attributed to the vacancy defects caused by multiple ion migration. Here, we incorporate an ether ring super-molecule into perovskite. This supramolecular approach effectively manipulates the crystallization kinetics and suppresses the halide segregation under illumination by tuning the coordination of halides toward monovalent cations and lead ions. As a result, the supramolecular engineered 1.77 eV perovskite solar cells achieve a champion power conversion efficiency of 21.01% with an outstanding operational stability, retaining 95% of initial efficiency after 1000 h σof maximum-power-point tracking test. Meanwhile, the two-terminal all-perovskite tandem solar cells achieve the champion efficiency of 28.44% (certified 27.92%). This work paves an avenue to improve the film quality and illumination stability of mixed halide wide-bandgap perovskites with a supramolecular approach.

Date: 2025
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DOI: 10.1038/s41467-025-62391-9

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