Fig. 3From: Effects of precursor solution composition on the performance and I-V hysteresis of perovskite solar cells based on CH3NH3PbI3-xClx SEM images of the MAPbI3-xClx films with the mole ratio of (a) 1:3, (b) 1.05:3, (c) 1.1:3, and (d) 1.15:3Back to article page