Preparation and Study of Optical Properties of (Polymer-Nickel Nitrate) Composite

Abstract

Polymer composite of polyvinyl alcohol (PVA), nickel nitrate  have been prepared by solution cast method for different doping concentrations of nickel nitrate. The optical characterization has been done by analyzing the absorption spectra in the spectral region 200–800 nm. It was found that the optical energy gap decreases with increasing NiNO₃ content.  The refractive index (n), extinction coefficient (k), static dielectric constant have been calculated for the investigated films. The optical constants are changing with increase the weight percentages of nickel nitrate.

Key words: composite, polymer,  optical constants, nickel nitrate