Fig. 3
From: Perovskite single-crystal thin films: preparation, surface engineering, and application
Space-confined growth of PVK SCTFs. a Facile space-confined solution-processing strategy for growing PVK SCTFs. b Optical images of ultrathin MAPbBr3 SCTFs showing the thickness-dependent colors. Reproduced with permission from Ref. [47]. Copyright 2016, American Chemical Society. c Fabrication of ultrathin PVK SCTFs using a dynamic flow microreactor system. d Optical images of ≈ 150 μm-thick wafer and integrated photodetectors fabricated on the PVK SC wafer. Reproduced with permission from Ref. [48]. Copyright 2016, WILEY-VCH. e Schematic of ion diffusion processes in PVK SCTFs using hydrophilic and hydrophobic substrates. f Photographs of the diffusion of the MAPbI3 precursor solution on hydrophilic glass and hydrophobic PTAA-covered indium tin oxide (ITO) substrates after different times. Reproduced with permission from Ref. [49]. Copyright 2017, Springer Nature