Effect of Adding Neodymium Oxide (NdO) on Optical Properties of (PVA-PVP) Composites

Abstract

In the present research, effect of Neodymium Oxide (NdO) addition on the optical properties of Poly (vinyl alcohol)-poly (vinyl pyrrolidone) (PVA-PVP) hydrogels composites have been investigated. The blend samples have been obtained by adding NdO to (PVA-PVP) with various weight percentages by solution casting method. The absorption spectra has been registered at the wavelength scope 200-1100 nm. The experimental results show that the (absorption coefficient, extinction coefficient, refractive index, real and imaginary dielectric constants) increased with an increasing of the concentration of NdO, and the energy gap of the indirect transition (allowed and forbidden) has been determined, and their values were declined with an increasing of concentration of NdO.