Perovskite/silicon tandem solar cells with bilayer interface passivation

• 成果类型: Article
• 署名作者: Liu, Jiang; He, Yongcai; Ding, Lei; Zhang, Hua; Li, Qiaoyan; Jia, Lingbo; Yu, Jia; Lau, Ting Wai; Li, Minghui; Qin, Yuan; Gu, Xiaobing; Zhang, Fu; Li, Qibo; Yang, Ying; Zhao, Shuangshuang; Wu, Xiaoyong; Liu, Jie; Liu, Tong; Gao, Yajun; Wang, Yonglei; Dong, Xin; Chen, Hao; Li, Ping; Zhou, Tianxiang; Yang, Miao; Ru, Xiaoning; Peng, Fuguo; Yin, Shi; Qu, Minghao; Zhao, Dongming; Zhao, Zhiguo; Li, Menglei; Guo, Penghui; Yan, Hui; Xiao, Chuanxiao; Xiao, Ping; Yin, Jun; Zhang, Xiaohong; Li, Zhenguo; He, Bo; Xu, Xixiang
• 署名单位: Soochow University - China; Soochow University - China; Hong Kong Polytechnic University; Chinese Academy of Sciences; Ningbo Institute of Materials Technology & Engineering, CAS; Xi'an Jiaotong University; Beijing University of Technology
• 刊物名称: Nature
• ISSN/ISSBN: 0028-5230
• DOI: 10.1038/s41586-024-07997-7
• 发表日期: 2024-11-21
• 关键词: tomato fruit; population history; quantitative trait; sugar composition; high-performance; seed quality; efficient; gene; protein; size

摘要

Two-terminal monolithic perovskite/silicon tandem solar cells demonstrate huge advantages in power conversion efficiency compared with their respective single-junction counterparts1,2. However, suppressing interfacial recombination at the wide-bandgap perovskite/electron transport layer interface, without compromising its superior charge transport performance, remains a substantial challenge for perovskite/silicon tandem cells3,4. By exploiting the nanoscale discretely distributed lithium fluoride ultrathin layer followed by an additional deposition of diammonium diiodide molecule, we have devised a bilayer-intertwined passivation strategy that combines efficient electron extraction with further suppression of non-radiative recombination. We constructed perovskite/silicon tandem devices on a double-textured Czochralski-based silicon heterojunction cell, which featured a mildly textured front surface and a heavily textured rear surface, leading to simultaneously enhanced photocurrent and uncompromised rear passivation. The resulting perovskite/silicon tandem achieved an independently certified stabilized power conversion efficiency of 33.89%, accompanied by an impressive fill factor of 83.0% and an open-circuit voltage of nearly 1.97 V. To the best of our knowledge, this represents the first reported certified efficiency of a two-junction tandem solar cell exceeding the single-junction Shockley-Queisser limit of 33.7%. A power conversion efficiency of 33.89% is achieved in perovskite/silicon tandem solar cells by using a bilayer passivation strategy to enhance electron extraction and suppress recombination.