Strain-tunable band gap of hydrogenated bilayer graphene

Details Strain-tunable band gap of hydrogenated bilayer graphene Strain-tunable band gap of hydrogenated bilayer graphene

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13f3047z&link_type=abstract

New Journal of Physics, Volume 13, Issue 6, pp. 063047 (2011).

Physics

Scientific paper

First-principles calculations have been utilized to investigate the biaxial strain-dependent electronic properties of fully hydrogenated bilayer graphene. It has been found that after complete hydrogenation, bilayer graphene exhibits semiconducting characteristics with a wide direct band gap. The band gap can be tuned continuously by the biaxial strain. Furthermore, compressive strain can induce the semiconductor-to-metal transition of this hydrogenated system. The origin of the strain-tunable band gap is discussed. The present study suggests the possibility of tuning the band gap of fully hydrogenated bilayer graphene by using mechanical strain and may provide a promising approach for the fabrication of electromechanical devices based on bilayer graphene.

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