Effect of Annealing Process on CH₃NH₃PbI_3-XCl_X Film Morphology of Planar Heterojunction Perovskite Solar Cells with Optimal Compact TiO₂ Layer

Figure 6

XRD patterns of CH₃NH₃PbI_3-XCl_X films deposited on c-TiO₂ layers with two different annealing programs for the ultimate temperature of 100°C. The green circles indicate the peaks of PbI₂.