Figure 4From: Efficient perovskite solar cells based on low-temperature solution-processed (CH3NH3)PbI3 perovskite/CuInS2 planar heterojunctionsSEM image and XRD analysis. (a) Top-view SEM image of the ITO/CuInS2(2)/Al2O3/(CH3NH3)PbI3 film and (b) the XRD analysis of the prepared (CH3NH3)PbI3 film.Back to article page