Figure 2
The XRD patterns illustrating the pressure-induced transformation of MAPbI3 with (a) Ne and (b) Ar as PTM. The powder XRD patterns calculated from the single-crystal experiments are presented at the logarithmic scale. Sections of the reciprocal space are shown for l = 0. The axes h, k (H, K) specific only for the tetragonal (pseudo-cubic) modification are emphasized in blue (red). |