Proceedings of Online International Conference on Hybrid and Organic Photovoltaics (OnlineHOPV20)
Publication date: 22nd May 2020
An innovative sequential eco-friendly spray coating technique is developed to uniformly deposit metal halide perovskite films on micron-sized textured surfaces, such as textured crystalline-silicon wafers. In contrast with previous work on spray-coated perovskite solar cells, our method completely avoids the use of toxic and dangerous solvents, using lead iodide nanocrystals by laser ablation in alcohol as precursor material. Both MAPbI3 and CsFAMAPbI3−xBrx perovskite films deposited with this technique show excellent optoelectronic properties and no phase segregation, even when synthesized in ambient conditions. Uniform perovskite coatings are obtained on textured-silicon heterojunction solar cells underlining the promise of this method, which holds the potential for scalable wet processing of perovskites on rough substrates, such as for two-terminal perovskite/silicon tandem solar cells fabrication.
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) under award no. OSR-CARF URF/1/3079-33-01 and the project OPERA of the Interdepartmental Centre Giorgio Levi Cases for Energy Economics and Technology, University of Padova.
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