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

E. Gregan; S. M. Keogh; T. G. Hedderman; G. Chambers; H. J. Byrne

doi:10.1117/12.463955

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

E. Gregan, S. M. Keogh, T. G. Hedderman, G. Chambers, H. J. Byrne

Research output: Contribution to journal › Conference article › peer-review

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 - 1.2 nm 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 (≈ 1580cm^-1) 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.

Original language	English
Pages (from-to)	1149-1157
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4876
Issue number	2
DOIs	https://doi.org/10.1117/12.463955
Publication status	Published - 2002
Event	Opto-Ireland 2002: Optics and Photonics Technologies and Applications - Galway, Ireland Duration: 5 Sep 2002 → 6 Sep 2002

Keywords

Carbon Nanotubes
HiPco
Raman

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10.1117/12.463955

Cite this

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title = "Stokes/anti-stokes Raman spectroscopy of HiPco single walled carbon nanotubes",

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 - 1.2 nm 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 (≈ 1580cm-1) 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.",

keywords = "Carbon Nanotubes, HiPco, Raman",

author = "E. Gregan and Keogh, {S. M.} and Hedderman, {T. G.} and G. Chambers and Byrne, {H. J.}",

year = "2002",

doi = "10.1117/12.463955",

language = "English",

volume = "4876",

pages = "1149--1157",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

number = "2",

note = "Opto-Ireland 2002: Optics and Photonics Technologies and Applications ; Conference date: 05-09-2002 Through 06-09-2002",

}

TY - JOUR

T1 - Stokes/anti-stokes Raman spectroscopy of HiPco single walled carbon nanotubes

AU - Gregan, E.

AU - Keogh, S. M.

AU - Hedderman, T. G.

AU - Chambers, G.

AU - Byrne, H. J.

PY - 2002

Y1 - 2002

N2 - 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 - 1.2 nm 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 (≈ 1580cm-1) 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.

AB - 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 - 1.2 nm 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 (≈ 1580cm-1) 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.

KW - Carbon Nanotubes

KW - HiPco

KW - Raman

UR - http://www.scopus.com/inward/record.url?scp=0042732924&partnerID=8YFLogxK

U2 - 10.1117/12.463955

DO - 10.1117/12.463955

M3 - Conference article

AN - SCOPUS:0042732924

SN - 0277-786X

VL - 4876

SP - 1149

EP - 1157

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

IS - 2

T2 - Opto-Ireland 2002: Optics and Photonics Technologies and Applications

Y2 - 5 September 2002 through 6 September 2002

ER -

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

Abstract

Keywords

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