Electronic Raman Scattering Thermometry of Disordered Solids

Dynamic disorder in metal halide perovskites is driven by thermal structural fluctuations of cross-linked octahedra leading to a broadband central peak in the low-frequency region of electronic Raman scattering spectrum. In this work, a temperature dependence of the Raman central peak in metal halide perovskite CsPbBr₃ is experimentally demonstrated. The results of this study hold promise for the development of edge-cutting remote temperature sensors.