Fig. 1
From: Light- and bias-induced structural variations in metal halide perovskites
Light-induced piezoresponse signal enhancement and stripe domains. a Schematic illustration of photo-assisted scanning probe microscopy (SPM) with a perovskite film on compact-TiO2/mesoporous-TiO2/FTO test structure under illumination. b 3D piezoresponse amplitude map of (out-of-plane) with and without illumination. c Out-of-plane amplitude map in PFM under light condition, and d the corresponding out of plane phase map. e Out-of-plane amplitude map in PFM in dark condition, and f the corresponding out of plane phase map
