Spectral luminescence parameters of CsPbCl3 nanocrystals dispersed in perovskite-like matrix

Luminescence spectral and kinetic characteristics of CsPbCl3 nanocrystals, dispersed in perovskite-like CsSrCl3 matrix, have been studied under excitation by synchrotron radiation in the UV-visible spectral region (4 to 20 eV). Various time components in the decay kinetics of CsPbCl3 nanocrystals appear due to direct excitation of nanocrystals or reabsorption of the luminescence of other emitting centres. Shortening of the luminescence decay time of the CsPbCl3 nanocrystals with respect to that observed for a CsPbCl3 single crystal has been explained as evidence of quantum-size effect.