Fig. 3From: Effects of Process Parameters on the Characteristics of Mixed-Halide Perovskite Solar Cells Fabricated by One-Step and Two-Step Sequential CoatingEffect of the PbCl2 solvent: SEM images of perovskite films made by spin-dip coating method, using various solvents for PbCl2: a DMSO/DMF = 2 (run 6), b DMSO/DMF = 1 (run 1), c DMSO only (run 7), and d perovskite particle size distribution for various PbCl2 solventsBack to article page