Importance of PbI2 morphology in two-step deposition of CH3NH3PbI3 for high-performance perovskite solar cells

Importance of PbI₂ morphology in two-step deposition of CH₃NH₃PbI₃ for high-performance perovskite solar cells

Wei Hui^{1, 2}, Tang Yang^{1, †}, Feng Bo¹, You Hui²

SEM images of MAPbI₃ fabricated with different methods. ((a) and (b)) MAPbI₃ fabricated with method A; (c) the size analysis of the sample shown in panel (b); ((d) and (e)) MAPbI₃ fabricated with method B; (f) size analysis of the sample shown in panel (e); ((g) and (h)) MAPbI₃ fabricated with method C; (i) size analysis of the sample shown in panel (h); ((j) and (k)) MAPbI₃ fabricated with method D; (l) size analysis of the sample shown in panel k.