Figure 3

(a) XRD data of the flash evaporated film, spin-coated film and single crystal powder. Calculated results from the unit cell of MAPbI₃ are also shown. (b) UV–visible absorbance and PL spectra of MAPbI₃ film deposited via flash evaporation. The inset shows Tauc plot to estimate the optical bandgap of the perovskite film.