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

Elizabeth Gregan; Sinead Mary Keogh; Theresa G. Hedderman; Gordon Chambers; Hugh James Byrne

doi:10.1117/12.463955

27 August 2003 Stokes/anti-Stokes Raman spectroscopy of high-pressure carbon oxide (HiPco) single-walled carbon nanotubes

Elizabeth Gregan, Sinead Mary Keogh, Theresa G. Hedderman, Gordon Chambers, Hugh James Byrne

Author Affiliations +

Proceedings Volume 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications; (2003) https://doi.org/10.1117/12.463955
Event: OPTO Ireland, 2002, Galway, Ireland

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.

Citation Download Citation

Elizabeth Gregan, Sinead Mary Keogh, Theresa G. Hedderman, Gordon Chambers, and Hugh James Byrne "Stokes/anti-Stokes Raman spectroscopy of high-pressure carbon oxide (HiPco) single-walled carbon nanotubes", Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); https://doi.org/10.1117/12.463955

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