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Probing the Nature of Defects in Graphene by Raman Spectroscopy
Preprint
Axel Eckmann ,
Alexandre Felten ,
Artem Mishchenko ,
Liam Britnell ,
Ralph Krupke ,
Kostya S. Novoselov ,
Cinzia Casiraghi
09 July 2012
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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 sp3-defects, it decreases for vacancy-like defects (~ 7) and reaches a minimum for boundaries in graphite (~3.5).