Abstract
The kinetics of the formation and thermal destruction of color centers in CuCl and AgCl nanocrystals (NCs) distributed in a glass matrix is described on the basis of the band model of an NC with colloidal color centers and with hole traps of one species. The possibility of experimentally determining the relative depth distribution of hole states in light-sensitive NCs in glass is demonstrated. The observed energy dispersion of localized hole states and its variation in NCs are associated, in accordance with Dexter’s idea, with large-scale thermal fluctuations of the crystal field. The presence of an excess charge on a colloidal particle and its influence on localized hole states are presumed.
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