文献类型：期刊文献

英文题名：In Situ Dual-Interface Passivation Strategy Enables The Efficiency of Formamidinium Perovskite Solar Cells Over 25%

作者：Wang, Haonan[1,2];Zheng, Yifan[2];Zhang, Guodong[2];Wang, Pengxiang[2];Sui, Xinyuan[1];Yuan, Haiyang[1];Shi, Yifeng[2];Zhang, Ge[2];Ding, Guoyu[2];Li, Yan[3];Li, Tao[3];Yang, Shuang[1];Shao, Yuchuan[2]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn,Minist Educ, Shanghai 201100, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China;[3]Xi An Jiao Tong Univ, Ctr Spintron & Quantum Syst, Dept Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China

年份：2024

卷号：36

期号：6

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20234915164532);WOS:【SCI-EXPANDED(收录号:WOS:001113811600001)】；

基金：This work was supported by the Shanghai Sailing Program (21YF1454000), the National Key R&D Program of China (2018YFE0118000), the National Natural Science Fund for Excellent Young Scholars (52022030), the Shanghai Pilot Program for Basic Research (22TQ1400100-5), the Shanghai Municipal Natural Science Foundation (22ZR1418000), and the Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400).

语种：英文

外文关键词：FAPbI(3); in situ dual-interface passivation; perovskite solar cells; power conversion efficiency

摘要：Perovskite solar cells (PSCs) are promising candidates for next-generation photovoltaics owing to their unparalleled power conversion efficiencies (PCEs). Currently, approaches to further improve device efficiencies tend to focus on the passivation of interfacial defects. Although various strategies have been developed to mitigate these defects, many involve complex and time-consuming post-treatment processes, thereby hindering their widespread adoption in commercial applications. In this work, a concise but efficient in situ dual-interface passivation strategy is developed wherein 1-butyl-3-methylimidazolium methanesulfonate (MS) is employed as a precursor additive. During perovskite crystallization, MS can either be enriched downward through precipitation with SnO2, or can be aggregated upward through lattice extrusion. These self-assembled MS species play a significant role in passivating the defect interfaces, thereby reducing nonradiative recombination losses, and promoting more efficient charge extraction. As a result, a PCE >25% (certified PCE of 24.84%) is achieved with substantially improved long-term storage and photothermal stabilities. This strategy provides valuable insights into interfacial passivation and holds promise for the industrialization of PSCs.