Tunable band gap of graphane nanoribbons under uniaxial elastic strain: a first-principles study

Details Tunable band gap of graphane nanoribbons under uniaxial elastic strain: a first-principles study Tunable band gap of graphane nanoribbons under uniaxial elastic strain: a first-principles study

2011-11-28

arxiv.org/abs/1111.6336v1

Physics

Condensed Matter

Materials Science

Scientific paper

In this Letter, we investigate the strain-induced band-gap modulation of both armchair and zigzag graphane nanoribbons based on the first-principles calculations. Within the elastic range, the band gap changes linearly with the uniaxial strain, where the band-gap of graphane nanoribbonsis more sensitive to compressive than tensile deformation. The band-gap deformation mainly originates from the shift of valence band edge of graphane nanoribbons under stain. Our results imply the great potential of graphane nanoribbons in the pressure sensor and optical electronics applications.

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