Probing the nature of defects in graphene by Raman spectroscopy

A. Eckmann; A. Felten; L. Britnell; A. Mishchenko; R. Krupke; K.S. Novoselov; C. Casiraghi

doi:10.1021/nl300901a

Probing the nature of defects in graphene by Raman spectroscopy

A. Eckmann, A. Felten, L. Britnell, A. Mishchenko, R. Krupke, K.S. Novoselov, C. Casiraghi

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Abstract

Raman spectroscopy is able to probe disorder in graphene through defect-activated peaks. It is of great interest to link these features to the nature of disorder. Here we present a detailed analysis of the Raman spectra of graphene containing different type of defects. We found that the intensity ratio of the D and D′ peak is maximum (∼13) for sp -defects, it decreases for vacancy-like defects (∼7), and it reaches a minimum for boundaries in graphite (∼3.5). This makes Raman Spectroscopy a powerful tool to fully characterize graphene.

Original language	English
Pages (from-to)	3925-3930
Number of pages	6
Journal	Nano Letters
Volume	12
Issue number	8
DOIs	https://doi.org/10.1021/nl300901a
Publication status	Published - 8 Aug 2012

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AU - Eckmann, A.

AU - Felten, A.

AU - Britnell, L.

AU - Mishchenko, A.

AU - Krupke, R.

AU - Novoselov, K.S.

AU - Casiraghi, C.

PY - 2012/8/8

Y1 - 2012/8/8

N2 - Raman spectroscopy is able to probe disorder in graphene through defect-activated peaks. It is of great interest to link these features to the nature of disorder. Here we present a detailed analysis of the Raman spectra of graphene containing different type of defects. We found that the intensity ratio of the D and D′ peak is maximum (∼13) for sp -defects, it decreases for vacancy-like defects (∼7), and it reaches a minimum for boundaries in graphite (∼3.5). This makes Raman Spectroscopy a powerful tool to fully characterize graphene.

AB - Raman spectroscopy is able to probe disorder in graphene through defect-activated peaks. It is of great interest to link these features to the nature of disorder. Here we present a detailed analysis of the Raman spectra of graphene containing different type of defects. We found that the intensity ratio of the D and D′ peak is maximum (∼13) for sp -defects, it decreases for vacancy-like defects (∼7), and it reaches a minimum for boundaries in graphite (∼3.5). This makes Raman Spectroscopy a powerful tool to fully characterize graphene.

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JO - Nano Letters

JF - Nano Letters

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Probing the nature of defects in graphene by Raman spectroscopy

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