Nuclei engineering for even halide distribution in stable perovskite/silicon tandem solar cells

• 成果类型: Article
• 署名作者: Chen, Yihua; Yang, Ning; Zheng, Guanhaojie; Pei, Fengtao; Zhou, Wentao; Zhang, Yu; Li, Liang; Huang, Zijian; Liu, Guilin; Yin, Ruiyang; Zhou, Huanping; Zhu, Cheng; Song, Tinglu; Hu, Chun; Zheng, Dezhi; Bai, Yang; Duan, Ye; Ye, Yakuan; Wu, Yiliang; Chen, Qi
• 署名单位: Beijing Institute of Technology; Chinese Academy of Sciences; Shanghai Advanced Research Institute, CAS; Zhangjiang Laboratory; Peking University; Jiangnan University; Beijing Institute of Technology
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10178
• DOI: 10.1126/science.ado9104
• 发表日期: 2024-08-02
• 页码: 554-560
• 关键词: suppressed phase segregation; high-performance; crystallization; degradation; passivation; EFFICIENCY

摘要

Wide-bandgap (WBG) absorbers in tandem configurations suffer from poor crystallinity and weak texture, which leads to severe mixed halide-cation ion migration and phase segregation during practical operation. We control WBG film growth insensitive to compositions by nucleating the 3C phase before any formation of bromine-rich aggregates and 2H phases. The resultant WBG absorbers show improved crystallinity and strong texture with suppressed nonradiative recombination and enhanced resistance to various aging stresses. Perovskite/silicon tandem solar cells achieve power conversion efficiencies of 29.4% (28.8% assessed by a third party) in a 25-square centimeter active area and 32.5% in a 1-square centimeter active area. These solar cells retained 98.3 and 90% of the original efficiency after 1301 and 800 hours of operation at 25 degrees and 50 degrees C, respectively, at the maximum power point (AM 1.5G illumination, full spectrum, 1-sun) when encapsulated.