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American Chemical Society, Nano Letters, 9(7), p. 2645-2649, 2007

DOI: 10.1021/nl071033g

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Temperature Dependence of the Raman Spectra of Graphene and Graphene Multilayers

Journal article published in 2007 by I. Calizo, Balandin Aa, A. A. Balandin, W. Bao ORCID, F. Miao ORCID, C. N. Lau
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We investigated the temperature dependence of the frequency of G peak in the Raman spectra of graphene on Si/SiO2 substrates. The micro-Raman spectroscopy was carried out under the 488 nm laser excitation over the temperature range from -190 to +100 degrees C. The extracted value of the temperature coefficient of G mode of graphene is chi = -0.016 cm-1/ degrees C for the single layer and chi = -0.015 cm-1/ degrees C for the bilayer. The obtained results shed light on the anharmonic properties of graphene.