Electronic and Dielectric Properties of Graphene and Graphene Oxide

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The study reveals that electrochemically reduced graphene (ERGO) exhibits significantly superior electronic and dielectric properties compared to graphene oxide (GO), with enhancements by two orders of magnitude. This improvement is attributed to stronger polarization from reduced clusters and thinner sheets in ERGO, while GO's properties are influenced by interlayer O-H bonds. The research also discusses how dielectric permittivity varies with frequency and temperature, highlighting the transition from a graphene-ion-cloud to a graphene-air dielectric system at elevated temperatures.