The optical conductivity, characteristics and optical transmittance of pure and AgNO3-doped
polyvinyl alcohol (PVA) films have been studied. The PVA used as a matrix element of
molecular weight 10000 g/mol. The optical conductivity increased with increasing dopant concentration up to 5wt.% of the content. The increase in conductivity for dopant concentration is attributed to the formation of charge transfer complexes. Optical absorption studies in the wavelength range (300–900) nm showed peak in the wavelength region 430 nm for differently doped films, in addition to the peak for undoped PVA. The band edge values shifted to lower energies on doping up to a dopant concentration of 5wt.%.The improvement in the optical properties may be attributed to the doping with AgNO3
that leads to the formation of ?-electron clouds, with the polarization aligned in the direction of the molecular chains.