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. 2019 Jul 22;3(11):1900050. doi: 10.1002/gch2.201900050

Figure 7.

Figure 7

SEM images. a) Top view of a film of CH3NH3SnI3 spin‐coated onto mesoporous TiO2 (80 nm thickness). b) Top view of a spin‐coated film of CH3NH3PbI3− xClx on mesoporous TiO2 (400 nm thickness). c) Top view of a spin‐coated film of CH3NH3SnI3 on mesoporous TiO2 (400 nm thickness). d) Cross‐sectional view of a complete device active layer composed of FTO glass/compact TiO2 (50 nm)/mesoporous TiO2 infiltrated with CH3NH3SnI3 (400 nm)/Spiro‐OMeTAD (600 nm). Reproduced with permission.120 Copyright 2014, Royal Society of Chemistry.