Lattice dynamics of double perovskite Cs2SnCl6 from first principles and experimental studies

Anh Thi Le,Thanh Binh Dinh,T. Anh Thu Do, Truong Giang Ho,Duy Manh Le,Minh Tan Man

Materials Letters（2022）

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摘要

•The Cs2SnCl6 double perovskites were synthesized by the simple hydrothermal method.•Phonon dynamics were investigated using first-principles combined micro-Raman scattering.•Three active modes are originated from Raman symmetry modes (A1g + Eg + 1T2g).•Electronic transitions may be coupled to lattice vibrations, revealing to large Stokes shift energy.

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关键词

Double perovskites,Cs2SnCl6,Phonon dynamics,Raman scattering,Stokes shift energy

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