Authors
Yuan Xiong, Cheng Zhu, Junfeng Wei, Zipeng Xu, Hua Zhong, Fanying Meng, Hongqiang Guo, Xunan Shen, Hao Tian, Zhongyu Li, Jie Sheng, Chuanxiao Xiao, Zhengxin Liu, Long Ye, Chao Zhang, Fei Zhang
Published in
Science advances. Volume 12. Issue 31. Pages eaef6600. Jul 31, 2026. Epub Jul 29, 2026.
Abstract
Perovskite/silicon tandem solar cells (TSCs) are attractive candidates for efficient, low-cost space photovoltaics, but radiation tolerance and operational stability limit deployment. Here, a monolithic tandem architecture integrating a stabilized 1.72-electron volt wide-bandgap perovskite top cell with a radiation-hardened p-type heterojunction silicon bottom cell is reported. The perovskite absorber is stabilized by a multifunctional ionic liquid additive, which enhances crystallinity, suppresses phase segregation, and improves thermal and photostability, resulting in a power conversion efficiency of 24.0% and a certified value of 23.58%. The resulting TSCs exhibit a certified zero air mass efficiency of 27.49% (12.56 square centimeters). Under 1 mega-electron volt electron irradiation at 1 × 1014 electrons per square centimeter, the TSC retains nearly 80% of its initial performance, whereas under 150 kilo-electron volt proton irradiation at 1 × 1012 protons per square centimeter, it retains 93% of its initial performance, accompanied by a recoverable response. A high-altitude balloon campaign further records a stable power output of up to 387.4 milliwatt at ∼30-kilometer altitude. This work demonstrates a viable pathway for next-generation space photovoltaics.
PMID:
42525759
Bibliographic data and abstract were imported from PubMed on 30 Jul 2026.
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