Fig. 3: Study on the SnO2/FAPbI3 interfacial properties.
From: Fully chemical interface engineering for statically and dynamically stable perovskite solar cells
DFT calculations of the binding energy between Zol and FAPbI3 for (a), unsaturated lattice and (b), saturated lattice. c Surface integration of the differential charge density obtained from DFT calculations. d 2D 1H NMR spectrum of FAPbI3, and (e) reaction products of DTPA and Zol, as well as the FAPbI3 mixture. f XRD patterns and (g) SEM images (with particle size distribution histogram below) of FAPbI3 films grown on different SnO2 electrodes before and after modification.
