Layered ordering of Br and I anions in CsPbBrxI3-x perovskites induces strongly anisotropic defect diffusion, with ready migration along layers and strongly suppressed diffusion across layers due to strain, octahedral tilting, and local bonding preferences.
and Guo, Shu and Abeykoon, AM Milinda and Cava, Robert J
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Anisotropic Defect Diffusion in Layered CsPbBr$_\mathrm{x}$I$_\mathrm{3-x}$ Perovskites
Layered ordering of Br and I anions in CsPbBrxI3-x perovskites induces strongly anisotropic defect diffusion, with ready migration along layers and strongly suppressed diffusion across layers due to strain, octahedral tilting, and local bonding preferences.