PVA/CdS-Ag Nanocomposites: Effect of Composition and UV Radiation on Optical, Electrical and Structural Properties

PVA incorporated with different content of CdS-Ag nanostructures are prepared using chemical reduction technique. Along with this these nanocomposites are exposed to UV radiated for different times. The X-ray spectraof PVA /CdS-Ag nanocomposites indicatethe formation of CdS and Ag nanostructures within PVA.Changes in the band structure of nanocomposites with and without UV exposure are studied by UV-Visible spectroscopy. Absorbance and refractive index are noticed to show increment with the concentration of nanostructures and time of exposure. Along with this, the behaviour of different optical parameters such as E0 and Ed is investigated. FE-SEM and EDX analysis exhibit microstructural modification occurring in nanocomposites due to changes in the concentration of incorporated nanostructures and UV radiation. Influence of concentration and UV exposure on conductivity and dielectric parameters on PVA/CdS-Ag nanocomposites are studied.