Figure 1From: Efficient perovskite solar cells based on low-temperature solution-processed (CH3NH3)PbI3 perovskite/CuInS2 planar heterojunctions Schematic diagram (a) and energy diagram (b) of the ITO/CuInS 2 /Al 2 O 3 /(CH 3 NH 3 )PbI 3 /Ag device. Back to article page