Synthesis of quasi-free-standing bilayer graphene nanoribbons on SiC surfaces.

ABSTRACT: Scaling graphene down to nanoribbons is a promising route for the implementation of this material into devices. Quantum confinement of charge carriers in such nanostructures, combined with the electric field-induced break of symmetry in AB-stacked bilayer graphene, leads to a band gap wider than that obtained solely by this symmetry breaking. Consequently, the possibility of fabricating AB-stacked bilayer graphene nanoribbons with high precision is very attractive for the purposes of applied and basic science. Here we show a method, which includes a straightforward air annealing, for the preparation of quasi-free-standing AB-bilayer nanoribbons with different widths on SiC(0001). Furthermore, the experiments reveal that the degree of disorder at the edges increases with the width, indicati

SUBMITTER: Oliveira MH 

PROVIDER: S-EPMC4510648 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature