Fig. 6From: Perovskite Solar Cells Based on Compact, Smooth FA0.1MA0.9PbI3 Film with Efficiency Exceeding 22%Cross-sectional images of MAPbI3 (a) and FA0.1MA0.9PbI3 (b) films on the top of ETL/ITO and the absorption spectra (c) of perovskite filmsBack to article page