Charge transport parameter of iodine-PMMA composites

Although Polymers have been used for insulation from many years, in today's world of sophisticated mechanical, electromechanical and electronic applications, polymers are playing an increasingly important part. Their most significant advantage over other materials is their complex structure, which can be physically or chemically tailored for specific applications. As the conductivity of polymers is very low in pristine state, doping with strong donors, such as alkali metals or acceptors, such as iodine played an important role in governing the electrical and dielectric properties of polymers. In this paper we report the effect of iodine doping on PMMA thin films by means of transport parameters. In order to obtain more information about charge storage and transport processes in polymers, Charge decay measurements are of great importance. The study of time dependence of charge is of immense importance to understand the rate of various processes, including that of ohmic conduction in neutralization of space charge due to localization of electronic carriers, controlled release of charge carriers and mode of their subsequent transport through the bulk sample.