Ethanol purification enables high-quality α-phase FAPbI3perovskite microcrystals for commercial photovoltaic applicationsElectronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d4nh00061g

Reliable quality and sustainable processes must be developed for commodities to enter the commercial stage. For next-generation photovoltaic applications such as perovskite solar cells, it is essential to manufacture high-quality photoactive perovskites viaeco-friendly processes. We demonstrate that ethanol, an ideal green solvent, can be applied to yield efficient alpha-phase FAPbI3perovskite microcrystals.