Optoelectrical properties of poly(ethylene oxide)/alum composite

The optical and electrical characteristics of prepared poly(ethylene oxide) /alum composites are studied as a function of alum content and frequency. T he optical energy band gaps were determined from the measured absorption sp ectra. The frequency of the applied electric field and alum content affect the dielectric behavior and the AC electrical conductivity of the prepared solid thin films. Correlation between the observed optical energy gaps and the AC electrical conductivity is presented. Generally, the observed enhanc ement in the electrical quantities is attributed to impurity, and ionic int eractions take place in the bulk of the double electrolyte solid solution.