TY - JOUR

T1 - Optical properties of graphene antidot lattices

A1 - Pedersen,Thomas Garm

A1 - Flindt,Christian

A1 - Pedersen,Jesper Goor

A1 - Jauho,Antti-Pekka

A1 - Mortensen,Asger

A1 - Pedersen,Kjeld

AU - Pedersen,Thomas Garm

AU - Flindt,Christian

AU - Pedersen,Jesper Goor

AU - Jauho,Antti-Pekka

AU - Mortensen,Asger

AU - Pedersen,Kjeld

PB - American Physical Society

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

KW - SIO2

UR - http://link.aps.org/doi/10.1103/PhysRevB.77.245431

U2 - 10.1103/PhysRevB.77.245431

DO - 10.1103/PhysRevB.77.245431

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

SN - 1098-0121

IS - 24

VL - 77

SP - 245431

ER -