Publication: Research - peer-review › Journal article – Annual report year: 2008
Undoped graphene is semimetallic and thus not suitable for many electronic and optoelectronic applications requiring gapped semiconductor materials. However, a periodic array of holes (antidot lattice) renders graphene semiconducting with a controllable band gap. Using atomistic modeling, we demonstrate that this artificial nanomaterial is a dipole-allowed direct-gap semiconductor with a very pronounced optical-absorption edge. Hence, optical infrared spectroscopy should be an ideal probe of the electronic structure. To address realistic experimental situations, we include effects due to disorder and the presence of a substrate in the analysis.
|Journal||Physical Review B (Condensed Matter and Materials Physics)|
Copyright 2008 American Physical Society
|Citations||Web of Science® Times Cited: 55|
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