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Comparative micro-Raman spectroscopy study of tellurium-filled double-walled carbon nanotubes

Sendova, Mariana and Flahaut, Emmanuel Comparative micro-Raman spectroscopy study of tellurium-filled double-walled carbon nanotubes. (2008) Journal of Applied Physics, vol. 103 (n° 2). ISSN 0021-8979

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Official URL: http://dx.doi.org/10.1063/1.2832757

Abstract

Tellurium-filled double-walled carbon nanotubes Te@DWNTs have been studied by Raman spectroscopy in the temperature interval from 300 to 700 K employing 785 nm excitation wavelength, and their spectra have been compared to those of pristine double-walled carbon nanotubes DWNTs. The DWNTs were synthesized by catalytic chemical vapor deposition. Assignment of the radial breathing modes and the tangential modes was done based on the one dimensional electronic energy band structure of carbon nanotubes. The tangential mode components of Te@DWNT are downshifted compared to those of pristine DWNT consistent with the proposed weakening of the carbon-carbon bond due to the introduced van der Waals interaction of the Te atoms with the DWNT. It was established that Te@DWNT can be unambiguously identified by the 30% temperature coefficient decrease of the G-band position.

Item Type:Article
Additional Information:Thanks to American Institute of Physics. The online version is available to http://jap.aip.org/jap/top.jsp
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > University of South Florida Sarasota-Manatee - USF (USA)
Laboratory name:
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Deposited By: Celine Cabaup
Deposited On:10 Apr 2009 13:50

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