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Raman bands of double-wall carbon nanotubes: comparison with single- and triple-wall carbon nanotubes, and influence of annealing and electron irradiation

Puech, Pascal and Flahaut, Emmanuel and Bassil, Ayman and Juffmann, T. and Beuneu, F. and Bacsa, Wolfgang Raman bands of double-wall carbon nanotubes: comparison with single- and triple-wall carbon nanotubes, and influence of annealing and electron irradiation. (2007) Journal of Raman Spectroscopy, vol. 38 (n° 6). pp. 714-720. ISSN 0377-0486

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Official URL: http://dx.doi.org/10.1002/jrs.1690

Abstract

We compare the G and G2D bands of single-, double- and triple-wall carbon nanotubes (CNTs). We observe that the band shape is sensitive to the number of walls of the CNTs. For single-wall carbon nanotubes (SWCNTs), the G band is composed of two distinct contributions G+ and G-, while the G band for double-wall nanotubes is composed of one band with two main contributions from the inner and the outer tube. The G2D band can be fitted with one Lorentzian for single-wall tubes, while two distinct contributions are observed for double-wall carbon nanotubes (DWCNTs). Considerable variations of the G2D band are found with similar first order Raman spectra. Annealing influences the D- and RBM-band intensities. Electron irradiation has the effect of decreasing the G- and D-band wavenumbers but does not enhance the D-band intensity considerably. The down-shifts of the G- and D-band wavenumbers are correlated and are the same for two excitation wavelengths. This is consistent with the scattering of phonons around the K-point.

Item Type:Article
Additional Information:Thanks to John Wiley & Sons editor. The definitive version is available at http://www3.interscience.wiley.com The original PDF of the article can be found at Journal of Raman Spectroscopy website : http://www3.interscience.wiley.com/journal/3420/home
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Ecole Polytechnique (FRANCE)
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Deposited By:Celine Cabaup

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