Solver nanocrystals obtained by the ionization of Ag~--ions in KCl

摘要

This paper discusses the formaiton of "corals" arranged silver nanocrystals in a KCl matrix starting from Ag~- ions (～10~17 ions/cm~3) by subsequent thermal annealing at temperatures between 400-700 deg C and 250 deg C. IOn the last case only, by i9llumination with total radition of a 100W Xe-lamp, shpericla separated silver clusters were obtained. The stepwise annealing process were followed by the rcording of the opticla absorption spectra at 20 deg C. The sizes of silver clsuters were determined through transmission electron microscopy.