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cond-mat.mtrl-sci2024
Sign of the Gap Temperature Dependence in CsPb(Br,Cl)3 Nanocrystals Determined by Cs-Rattler Mediated Electron-Phonon Coupling
S. Fasahat, N. Fiuza-Maneiro, B. Schäfer +5
So far, the striking sign reversal in the near-ambient slope of the gap temperature dependence of colloidal CsPbCl3 perovskite nanocrystals (NCs) compared to its Br counterpart, re…
cond-mat.mtrl-sci2024
Absence of Anomalous Electron-Phonon Coupling in the Temperature Renormalization of the Gap of CsPbBr Nanocrystals
Shima Fasahat, Benedikt Schäfer, Kai Xu +5
Metal halide perovskites exhibit a fairly linear increase of the bandgap with increasing temperature, when crystallized in a tetragonal or cubic phase. In general, both thermal exp…