We provide a comprehensive atomic-scale description of the purely thermal response of lead-halide perovskites in a temperature range relevant for realistic applications. Thermal-induced changes are rationalized in terms of displacive phase transitions, which are a consequence of the phonon anharmonicity of the inorganic lattice.
Laboratory for Ultrafast X-ray and Electron Microscopy
Department of Physics
University of Pavia
Via Agostino Bassi 6, 27100 Pavia, PV