Band‐like Transport in Surface‐Functionalized Highly Solution‐Processable Graphene Nanosheets

Abstract

Surface-functionalised graphene oxide nanosheets are obtained from substoichiometric oxidation of graphite, exfoliation, and in situ functionalization. Subsequent deoxidation produces zero-gap imperfect graphenites with carrier mobilities of 10 cm2V−1s−1. These nanosheets exhibit trap-free band-like transport with sub-meV carrier mobility activation energies at low temperatures for electrons and holes. Field-effect transistors with zero gate-voltage threshold have been demonstrated.