Resonant Raman spectra of graphene with point defects

V.N. Popov, L. Henrard, P. Lambin

    Research output: Contribution to journalArticle

    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.
    Original languageEnglish
    Pages (from-to)2448-2455
    Number of pages8
    JournalCarbon
    Volume47
    Issue number10
    DOIs
    Publication statusPublished - 1 Aug 2009

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