Figure 1.
a) Schematic diagram of MASnI3 perovskite film via ion exchange/insertion reaction process, b) XRD and c) UV–vis spectra of the conversion in the reaction at the different time intervals.
a) Schematic diagram of MASnI3 perovskite film via ion exchange/insertion reaction process, b) XRD and c) UV–vis spectra of the conversion in the reaction at the different time intervals.