Resonant Raman spectra of graphene with point defects

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

The Raman spectra of graphene with three different types of point defects, namely, a mono-vacancy, a di-vacancy, and a Stone-Wales defect, was calculated within a non-orthogonal tight-binding model using supercells of graphene with a single defect. The defects were found to modify the electronic structure and the phonons of graphene giving rise to new optical transitions and defect-related phonons. Based on the calculated Raman spectra, we determined the Raman lines that can serve as signatures of the specific defects. The comparison of the calculated Raman intensity of the graphitic (G-) band of perfect graphene and graphene with defects shows that the intensity can be enhanced up to one order of magnitude by the presence of defects.
langue originaleAnglais
Pages (de - à)2448-2455
Nombre de pages8
journalCarbon
Volume47
Numéro de publication10
Les DOIs
étatPublié - 1 août 2009

Empreinte digitale

Graphite
Point defects
Raman scattering
Defects
Phonons
Vacancies
Optical transitions
Electronic structure

Citer ceci

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abstract = "The Raman spectra of graphene with three different types of point defects, namely, a mono-vacancy, a di-vacancy, and a Stone-Wales defect, was calculated within a non-orthogonal tight-binding model using supercells of graphene with a single defect. The defects were found to modify the electronic structure and the phonons of graphene giving rise to new optical transitions and defect-related phonons. Based on the calculated Raman spectra, we determined the Raman lines that can serve as signatures of the specific defects. The comparison of the calculated Raman intensity of the graphitic (G-) band of perfect graphene and graphene with defects shows that the intensity can be enhanced up to one order of magnitude by the presence of defects.",
author = "V.N. Popov and L. Henrard and P. Lambin",
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Resonant Raman spectra of graphene with point defects. / Popov, V.N.; Henrard, L.; Lambin, P.

Dans: Carbon, Vol 47, Numéro 10, 01.08.2009, p. 2448-2455.

Résultats de recherche: Contribution à un journal/une revueArticle

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