Field-effect polymer gating of low-dimensionality carbon-based materials

Abstract

The work focuses on the modification of the transport properties of low-dimensional carbon based materials by tuning their surface charge carrier density (up to values of induced charge exceeding 2·10^14 carriers/cm^2) via electrochemical gating with an innovative polymer electrolyte solution. Main subjects of the study are single- and few-layer graphene systems produced by micro-mechanical exfoliation and by CVD growth respectively. Attempts to modulate the superconducting critical temperature of the graphite intercalated compounds CaC6 are also made. In addition, polymer gating was also studied on highly oriented pyrolytic graphite, for the first time, to study its properties under high charge induction