GIWAXS 1D integrated patterns of scattering intensity for differentq-ranges showing Bragg peaks for hexagonal polytype phases for Cs0.05FA0.78MA0.17Pb(I0.83Br0.17)3(black) and Cs0.10FA0.83MA0.17Pb(I0.83Br0.17)3(blue). Note that the intensity scale is adjusted between some panels to visualize peaks.candtsubscripts indicate that the Miller indices are relative to the pseudocubic or tetragonal unit cells, respectively.
