Skip to main content
. 2024 Feb 29;124(5):2281–2326. doi: 10.1021/acs.chemrev.3c00532

Figure 22.

Figure 22

Crystal structure of the mixed MHyPb(Br1–xClx)3 system in the (a) cubic, (b) orthorhombic, and (c) monoclinic phases. Arrows represent electric dipole moments of MHy cations. (d) Single [100] layer of the PbX6 octahedra in the cubic phase. [100] layers of (e) less-distorted Pb(1)X6 and (f) highly distorted Pb(2)X6 octahedra in both polar orthorhombic and monoclinic phases. (g) Temperature–composition phase diagram of the MHyPb(Br1–xClx)3 system. Symmetry notation: C - cubic, O - orthorhombic, M - monoclinic. (h) Temperature dependence of the real part ε′ of the complex dielectric permittivity of the MHyPb(Br0.85Cl0.15)3 pellet sample. The dielectric response is dominated by the conductivity effects. Reprinted (adapted) with permission from ref (118). Copyright 2022 American Chemical Society.