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Proceedings Paper

Stokes/anti-Stokes Raman spectroscopy of HiPco single-walled carbon nanotubes
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Paper Abstract

An analysis of the Raman spectra of single-walled HiPco carbon nanotube powder using laser energies of 1.92 eV, 2.4 eV, 2.5 eV, and 2.7 eV, including a comparison of the Stokes and anti-Stokes contributions is presented. The diameter distribution was determined to be 0.8-1.2nm from the spectral positioning of the Radial Breathing Modes. The diameter distribution is consistent with that determined by NIR absorption spectroscopy. At all excitation energies the profile of the G-line indicates a predominance of semiconducting tubes although at 2.4 eV there is some indication of some contribution from metallic tubes. In all cases the anti Stokes line was weak and the Stokes/anti Stokes ratio was at least an order of magnitude indicating at most weak resonance enhancement in either.

Paper Details

Date Published: 27 August 2003
PDF: 9 pages
Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); doi: 10.1117/12.463955
Show Author Affiliations
Elizabeth Gregan, Dublin Institute of Technology (Ireland)
Sinead Mary Keogh, Dublin Institute of Technology (Ireland)
Theresa G. Hedderman, Dublin Institute of Technology (Ireland)
Gordon Chambers, Dublin Institute of Technology (Ireland)
Hugh James Byrne, Dublin Institute of Technology (Ireland)

Published in SPIE Proceedings Vol. 4876:
Opto-Ireland 2002: Optics and Photonics Technologies and Applications
Vincent Toal; Norman Douglas McMillan; Gerard M. O'Connor; Eon O'Mongain; Austin F. Duke; John F. Donegan; James A. McLaughlin; Brian D. MacCraith; Werner J. Blau, Editor(s)

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