Fig. 2From: Perovskite single-crystal thin films: preparation, surface engineering, and applicationTop-down method for fabricating PVK wafers. a Slicing process for fabricating FAPbI3 SC wafer. b Top view of FAPbI3 SC wafers. c Pictorial representation of an array of 153 integrated photodetectors fabricated on a PVK wafer. Reproduced with permission from Ref. [45]. Copyright 2016, WILEY-VCHBack to article page