High mobility ambipolar field effect transistors made from large-scale CVD graphitic thin films

Ultrathin graphitic films containing only one or a few graphene layers have received great attention as a promising channel material to make "carbon-based" transistors, particularly for high speed and/or low power electronic devices. Back-gated or front-gated graphene field effect transistors (GFET) made from exfoliated (from bulk graphite) or epitaxially-grown (by surface decomposition of SiC) graphene layers can show electron and hole mobilities approaching 104 cm2/Vs or higher.