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.
Understanding the phase transition mechanism in the lead halide perovskite CsPbBr3 via theoretical and experimental GIW AXS and Raman spectroscopy
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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.