Optical and transport studies on PVP: CH3COOK-Al2O3 nanocomposite polymer films

Al2O3 doped nanocomposite polymer electrolytes were prepared with PVP+CH3COOK by solution cast technique. From the optical absorption studies, a large hump peak at 336.25 nm was observed for higher composition. From the plots direct bandgap values were evaluated and found to be 3.95, 3.89, 3.78.and 3.70 eV, whereas indirect energy bandgap values were 3.45, 3.42, 3.27 and 3.24 eV. Transport properties were studied for all wt% proportions of PVP+CH3COOK:Al2O3 NCP films. The transport of ions was found to be high for the sample (80:20:1) wt% and it was 0.98.