TY - JOUR
T1 - Radiation-resilient monolithic wide-bandgap perovskite/p-type heterojunction silicon tandem solar cells for space photovoltaics
AU - Xiong, Yuan
AU - Zhu, Cheng
AU - Wei, Junfeng
AU - Xu, Zipeng
AU - Zhong, Hua
AU - Meng, Fanying
AU - Guo, Hongqiang
AU - Shen, Xunan
AU - Tian, Hao
AU - Li, Zhongyu
AU - Sheng, Jie
AU - Xiao, Chuanxiao
AU - Liu, Zhengxin
AU - Ye, Long
AU - Zhang, Chao
AU - Zhang, Fei
N1 - Publisher Copyright:
Copyright © 2026 the Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. no claim to original U.S. Government Works. distributed under a creative commons Attribution noncommercial license 4.0 (cc BY-nc).
PY - 2026/7/29
Y1 - 2026/7/29
N2 - 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 x 1014 electrons per square centimeter, the TSC retains nearly 80% of its initial performance, whereas under 150 kilo-electron volt proton irradiation at 1 x 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.
AB - 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 x 1014 electrons per square centimeter, the TSC retains nearly 80% of its initial performance, whereas under 150 kilo-electron volt proton irradiation at 1 x 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.
UR - https://www.scopus.com/pages/publications/105046411687
U2 - 10.1126/sciadv.aef6600
DO - 10.1126/sciadv.aef6600
M3 - Article
C2 - 42525759
AN - SCOPUS:105046411687
SN - 2375-2548
VL - 12
JO - Science Advances
JF - Science Advances
IS - 31
M1 - eaef6600
ER -