Figure 1

XRD patterns of the (a) (BA)2(MA)3Pb4I13thin films prepared by single-source thermal evaporation, (b) changes in the typical peak intensities, (c) FWHM changes, and (c) change in grain size.

XRD patterns of the (a) (BA)2(MA)3Pb4I13thin films prepared by single-source thermal evaporation, (b) changes in the typical peak intensities, (c) FWHM changes, and (c) change in grain size.