Temperature Dependent Electrical Characterization of Graphene Flakes Synthesized Using Liquid Phase Exfoliation

We will report the synthesis and electrical transport properties of graphene flakes synthesized by exfoliating the bulk graphite in isopropyl alcohol. Temperature dependence of the electrical resistivity of thin films made from exfoliated graphene flakes has been studied over a wide range (10K \textless T \textless 300K) of temperature. Temperature dependence of resistance shows a slow linear increase in resistance with decrease in temperature. Electric field effects on charge transport properties e.g. temperature (220K \textless T \textless 275K) dependence of carrier mobilities etc. of exfoliated graphene thin film devices under electrochemically gated environment will also be presented and discussed.