The central Raman peak observed in cubic and tetragonal phases of metal halide perovskites is attributed primarily to disorder-induced second-order acoustic-phonon Raman scattering, drawing support from analogous behavior in other disordered semiconductor systems.
Absence of anomalous electron-phonon coupling in the temperature renormalization of the gap of CsPbBr3 nanocrystals
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Phonon Interactions in Metal Halide Perovskites elucidated by Raman Scattering
The central Raman peak observed in cubic and tetragonal phases of metal halide perovskites is attributed primarily to disorder-induced second-order acoustic-phonon Raman scattering, drawing support from analogous behavior in other disordered semiconductor systems.