锡
卤化物
甲脒
溶剂
溶解度
碘化物
钙钛矿(结构)
热稳定性
无机化学
材料科学
化学
化学工程
有机化学
工程类
作者
Diego Di Girolamo,Jorge Pascual,Mahmoud H. Aldamasy,Zafar Iqbal,Guixiang Li,Eros Radicchi,Meng Li,Silver-Hamill Turren-Cruz,Giuseppe Nasti,André Dallmann,Filippo De Angelis,Antonio Abate
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2021-02-12
卷期号:6 (3): 959-968
被引量:72
标识
DOI:10.1021/acsenergylett.0c02656
摘要
Tin is one of the most promising alternatives to lead to make lead-free halide perovskites for optoelectronics. However, the stability of tin-based perovskites is hindered by the oxidation of Sn(II) to Sn(IV). Recent works established that dimethyl sulfoxide, which is one of the best-performing solvents for processing perovskite, is the primary source of tin oxidation. The quest for a stable solvent could be a game-changer in the stability of tin-based perovskites. Starting from a database of over 2000 solvents, we identified a series of 12 new solvents suitable for the processing of formamidinium tin iodide perovskite (FASnI3) by investigating (1) the solubility of the precursor chemicals FAI and SnI2, (2) the thermal stability of the precursor solution, and (3) the possibility of forming perovskite. Finally, we demonstrate a new solvent system to produce solar cells outperforming those based on DMSO. Our work provides guidelines for further identification of new solvents or solvent mixtures for preparing stable tin-based perovskites.
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