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Size distribution of silver nanoparticles in polyvinyl alcohol composite film: Impact on photoluminescence spectra

Deepali Sarkar, Sulochana Deb

Silver- polyvinyl alcohol (Ag-PVA) nano composite dispersion have been synthesized by facile chemical reduction method. The film obtained from this dispersion shows to have particle size varying from 10-50 nm. This wide range of variation is supported by broadening of UV-Vis spectra also by the red shift in photoluminescence (PL) peakwith the increase in excitation wave length. The observed effect may be assigned to contribution of particle size towards optical transition.