Temperature dependence of the Raman spectra of graphene and graphene multilayers

Nano Lett. 2007 Sep;7(9):2645-9. doi: 10.1021/nl071033g. Epub 2007 Aug 25.

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.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Carbon / chemistry*
  • Crystallization / methods*
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Molecular Conformation
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Nanotechnology / methods*
  • Particle Size
  • Spectrum Analysis, Raman / methods*
  • Surface Properties
  • Temperature

Substances

  • Macromolecular Substances
  • Carbon