Ion mediated charge carrier transport in a novel radiation sensitive polyoxometalate–polymer hybrid

Abstract

We elucidate the carrier transport mechanism in a novel polyoxometalate–polymer (POM–MAPDST) hybrid containing molybdenum transition metal. Temperature dependent electrical measurements reveal trap free space charge limited conduction at room temperature, but at low temperatures, the conduction becomes space charge limited with exponential distribution of traps. Moreover, pH dependent electrochemical studies provide evidence for ion assisted carrier conduction in POM–MAPDST hybrid polymers.