Study of Some Optical Properties of Polystyrene - Copper Nanocomposite Films

The effect of addition of nano Cu on some optical properties of polystyrene has been studied. For this purpose, many samples have been prepared by adding nano Cu to the polystyrene with different Weight percentages and different thickness. The absorption spectra have been recorded at the wavelength ranges (220-800 nm). The absorption coefficient, extinction coefficient and energy gap of the indirect allowed and forbidden transition have been determined. Results show that the absorption coefficient and extinction coefficient increase and the energy gap of the indirect allowed and forbidden transition decreases with the wt. % content of nano Cu.