Optical properties of graphene antidot lattices

Thomas Garm Pedersen, Christian Flindt, Jesper Goor Pedersen, Antti-Pekka Jauho, Asger Mortensen, Kjeld Pedersen

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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.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Issue number24
Pages (from-to)245431
Publication statusPublished - 2008

Bibliographical note

Copyright 2008 American Physical Society


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