Resonance Raman Spectroscopy of Armchair Single-Walled Carbon Nanotubes

ORAL

Abstract

We performed resonance Raman spectroscopy studies of metallic single-walled carbon nanotubes (SWNTs), including armchair SWNTs from (6,6) through (10,10). The measurements were carried out with excitation of 440-850 nm on aqueous ensemble samples of SWNTs enriched in metallic species. From this, we generated Raman excitation profiles (REPs) of the radial breathing mode and compare the REPs of armchairs and other metallic species. Additionally, we measured REPs of the G-band mode and observed how the Breit-Wigner-Fano line shape of the G$^{-}$ peak evolves in peak position, width and intensity relative to the G$^{+}$ peak as different metallic nanotubes are excited. By combining these studies with absorption and photoluminescence excitation spectroscopy studies, we present a comprehensive examination of the optical signatures of metallic SWNTs.

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Authors

  • Erik Haroz

    • Rice University
    • Department of Electrical and Computer Engineering, Rice University

  • William Rice

    • Department of Electrical and Computer Engineering, Rice University

  • Benjamin Lu

    • Department of Electrical and Computer Engineering, Rice University

  • Robert Hauge

    • Chemistry Dept., Rice University
    • Department of Chemistry, Rice University

  • Donny Magana

    • Chemistry Division, Los Alamos National Laboratory

  • Stephen Doorn

    • Chemistry Division, Los Alamos National Laboratory
    • Los Alamos National Laboratory

  • Pasha Nikolaev

    • Johnson Space Center, National Aeronautics and Space Administration

  • Sivaram Arepalli

    • Johnson Space Center, National Aeronautics and Space Administration

  • Junichiro Kono

    • Rice Univeristy
    • ECE Dept., Rice University
    • Dept. of Electrical and Computer Engineering, Rice University
    • Rice University
    • Department of Electrical and Computer Engineering, Rice University