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Lights and Shadows of DMSO as Solvent for Tin Halide Perovskites |
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| Authors: | Dr. Jorge Pascual Dr. Diego Di Girolamo Marion A. Flatken Mahmoud H. Aldamasy Guixiang Li Dr. Meng Li Prof. Antonio Abate |
| Affiliation: | 1. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;2. Department of Chemical, Materials and Production Engineering, University of Naples Federico II, 80125 Naples, Italy;3. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany Egyptian Petroleum Research Institute, 11727 Cairo, Egypt;4. Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109 Berlin, Germany Key Lab for Special Functional Materials, Henan University, 475004 Kaifeng, China |
| Abstract: | In 2020 dimethyl sulfoxide (DMSO), the ever-present solvent for tin halide perovskites, was identified as an oxidant for SnII. Nonetheless, alternatives are lacking and few efforts have been devoted to replacing it. To understand this trend it is indispensable to learn the importance of DMSO on the development of tin halide perovskites. Its unique properties have allowed processing compact thin-films to be integrated into tin perovskite solar cells. Creative approaches for controlling the perovskite crystallization or increasing its stability to oxidation have been developed relying on DMSO-based inks. However, increasingly sophisticated strategies appear to lead the field to a plateau of power conversion efficiency in the range of 10–15 %. And, while DMSO-based formulations have performed in encouraging means so far, we should also start considering their potential limitations. In this concept article, we discuss the benefits and limitations of DMSO-based tin perovskite processing. |
| Keywords: | lead-free systems perovskites perovskite crystallization perovskite solar cells tin oxidation |