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- W4378464863 abstract "Halide pervoskites are an important class of semiconducting materials which hold great promise for optoelectronic applications. In this work we investigate the relationship between vibrational anharmonicity and dynamic disorder in this class of solids. Via a multi-scale model parameterized from first-principles calculations, we demonstrate that the non-Gaussian lattice motion in halide perovskites is microscopically connected to the dynamic disorder of overlap fluctuations among electronic states. This connection allows us to rationalize the emergent differences in temperature-dependent mobilities of prototypical MAPbI$_3$ and MAPbBr$_3$ compounds across structural phase-transitions, in agreement with experimental findings. Our analysis suggests that the details of vibrational anharmonicity and dynamic disorder can complement known predictors of electronic conductivity and can provide structure-property guidelines for the tuning of carrier transport characteristics in anharmonic semiconductors." @default.
- W4378464863 created "2023-05-27" @default.
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- W4378464863 date "2023-05-23" @default.
- W4378464863 modified "2023-09-27" @default.
- W4378464863 title "Correlated Anharmonicity and Dynamic Disorder Control Carrier Transport in Halide Perovskites" @default.
- W4378464863 doi "https://doi.org/10.48550/arxiv.2305.13682" @default.
- W4378464863 hasPublicationYear "2023" @default.
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