Observation of tunable electrical bandgap in large-area twisted bilayer graphene synthesized by chemical vapor deposition.

ABSTRACT: Although there are already many efforts to investigate the electronic structures of twisted bilayer graphene, a definitive conclusion has not yet been reached. In particular, it is still a controversial issue whether a tunable electrical (or transport) bandgap exists in twisted bilayer graphene film until now. Herein, for the first time, it has been demonstrated that a tunable electrical bandgap can be opened in the twisted bilayer graphene by the combination effect of twist and vertical electrical fields. In addition, we have also developed a facile chemical vapor deposition method to synthesize large-area twisted bilayer graphene by introducing decaborane as the cocatalyst for decomposing methane molecules. The growth mechanism is demonstrated to be a defined-seeding and self-limiting pr

SUBMITTER: Liu JB 

PROVIDER: S-EPMC4607884 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature