Fig. 10
From: Perovskite single-crystal thin films: preparation, surface engineering, and application
PVK SCTFs for photovoltaic devices. a Solubility of FA0.6MA0.4PbI3 and MAPbI3 in a GBL solution at different temperatures. b Device architecture (left) and cross-sectional SEM image (right) of the mixed cation PVK SC solar cell. c, d EQE spectra and comparison of J–V curves of MAPbI3 and FA0.6MA0.4PbI3 SC devices. All measurements were conducted under 1 sun illumination. Reproduced with permission from Ref. [96]. Copyright 2021, The Royal Society of Chemistry. e Device architecture and cross-sectional SEM image of the FA0.6MA0.4PbI3 SC device with a hydrophilic HTL. f Diagram of the energy levels of different layers. g J–V curves for the champion device under 1 sun illumination. h EQE spectrum with the integrated JSC of the champion device. Reproduced with permission from Ref. [97]. Copyright 2023, American Chemical Society