Lacroix A, de Laissardière GT, Quémerais P, Julien JP, Mayou D. Modeling of Electronic Mobilities in Halide Perovskites: Adiabatic Quantum Localization Scenario.
PHYSICAL REVIEW LETTERS 2020;
124:196601. [PMID:
32469540 DOI:
10.1103/physrevlett.124.196601]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
The transport properties of MAPbI3 are analyzed within a tight-binding model. We find a strong Fröhlich interaction of electron and holes with the electrostatic potential induced by the longitudinal optical phonon modes. This potential induces a strong scattering and limits the electronic mobilities at room temperature to about 200 cm^{2}/V s. With additional extrinsic disorder, a large fraction of the electrons and holes are localized, but they can diffuse by following nearly adiabatically the evolution of the electrostatic potential. This process of diffusion, at a rate which is given by the lattice dynamics, contributes to the unique electronic properties of this material.
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