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- W3165069439 endingPage "5177" @default.
- W3165069439 startingPage "5169" @default.
- W3165069439 abstract "We study the effects of hydrostatic pressure in the range 0.0--2.0 GPa on anion mobility in the orthorhombic $Pnma$ phase of CsPbBr$_{3}$. Using density functional theory and the climbing nudged elastic band method, we calculate the transition states and activation energies for anions to migrate both within and between neighbouring PbBr$_{3}$ octahedra. The results of those calculations are used as input to a kinetic model for anion migration, which we solve in the steady state to determine the anion mobility tensor as a function of applied pressure. We find that the response of the mobility tensor to increasing pressure is highly anisotropic, being strongly enhanced in the $(010)$ lattice plane and strongly reduced in the direction normal to it at elevated pressure. These results demonstrate the potentially significant influence of pressure and strain on the magnitude and direction of anion migration in lead--halide perovskites." @default.
- W3165069439 created "2021-06-07" @default.
- W3165069439 creator A5011660470 @default.
- W3165069439 creator A5023096949 @default.
- W3165069439 creator A5091748131 @default.
- W3165069439 date "2021-05-25" @default.
- W3165069439 modified "2023-10-15" @default.
- W3165069439 title "3D-to-2D Transition of Anion Vacancy Mobility in CsPbBr<sub>3</sub> under Hydrostatic Pressure" @default.
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