Effects of Solution-Based Fabrication Conditions on Morphology of Lead Halide Perovskite Thin Film Solar Cells

Figure 10

PXRD of (a) bare ITO/ZnO, (b) PbI₂, (c) calculated tetragonal CH₃NH₃PbI₃, (d) 61 nm thick CH₃NH₃PbI₃, (e) 200 nm CH₃NH₃PbI₃, (f) 280 nm CH₃NH₃PbI₃, (g) 400 nm CH₃NH₃PbI₃, and (h) 560 nm CH₃NH₃PbI₃. § refers to a peak that is indicative of crystalline PbI₂ and is indicative of ITO glass substrate. As the perovskite layer thickness increases, the unreacted crystalline PbI₂ also increases. Reproduced from [23] with permission from the Royal Society of Chemistry.