fig2
Figure 2. (A) The [PbI6] octahedra network of MAPbI3 for the cubic high-temperature structure at 350 K[36] (top) and the tetragonal room-temperature structure at 300 K[37] (bottom). (B) Pb-Xa-Pb bond angle (octahedra tilt) of MAPbI3 (red) and MAPbBr3 (blue) in the tetragonal (solid symbols) and cubic phase (open symbols). Besides the data from Schuck et al.[6] and Weadock et al.[7], values for the cubic phase at 350 K of MAPbI3 from Whitfield et al. are also given[36]. Adapted with permission from Schuck et al.[6]. Copyright 2022 American Chemical Society.
