Figure 2From: Efficient perovskite solar cells based on low-temperature solution-processed (CH3NH3)PbI3 perovskite/CuInS2 planar heterojunctionsThe morphology, structures, and chemical composition of the as-prepared CuInS 2 . (a) Top view of the ITO/CuInS2(1) film; (b) the top-view SEM image of the ITO/CuInS2(2) film; (c) the cross-sectional images of the ITO/CuInS2(2), ITO/CuInS2(2)/Al2O3, and ITO/CuInS2(2)/Al2O3/(CH3NH3)PbI3/Ag films; and (d) the EDX spectrum of the ITO/CuInS2(2) film.Back to article page