Phonon-Assisted Excitonic Recombination Channels Observed in DNA-Wrapped Carbon Nanotubes Using Photoluminescence Spectroscopy

S. G. Chou, F. Plentz, J. Jiang, R. Saito, D. Nezich, H. B. Ribeiro, A. Jorio, M. A. Pimenta, Ge. G. Samsonidze, A. P. Santos, M. Zheng, G. B. Onoa, E. D. Semke, G. Dresselhaus, and M. S. Dresselhaus
Phys. Rev. Lett. 94, 127402 – Published 1 April 2005

Abstract

By using a sample of DNA-wrapped single-wall carbon nanotubes strongly enriched in the (6,5) nanotube, photoluminescence emissions observed at special excitation energy values were identified with specific mechanisms of phonon-assisted excitonic absorption and recombination processes associated with (6,5) nanotubes, including one-phonon, two-phonon, and some continuous-luminescence processes. Such detailed processes are not separately identified in three-dimensional semiconducting materials. A general theoretical framework is presented to interpret the experimentally observed phonon-assisted processes in terms of excitonic states.

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  • Received 8 August 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.127402

©2005 American Physical Society

Authors & Affiliations

S. G. Chou1, F. Plentz2, J. Jiang3, R. Saito3, D. Nezich4, H. B. Ribeiro2, A. Jorio2, M. A. Pimenta2, Ge. G. Samsonidze5, A. P. Santos6, M. Zheng7, G. B. Onoa7, E. D. Semke7, G. Dresselhaus8, and M. S. Dresselhaus4,5

  • 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
  • 2Depto. de Física, Universidade Federal de Minas Gerais, Belo Horizonte-MG, 30123-970, Brazil
  • 3Department of Physics, Tohoku University and CREST JST, Aoba, Sendai, 980-8578, Japan
  • 4Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
  • 5Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
  • 6Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Belo Horizonte-MG, 30123-970, Brazil
  • 7DuPont Central Research and Development, Experimental Station, Wilmington, Delaware 19880-0328, USA
  • 8Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA

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Issue

Vol. 94, Iss. 12 — 1 April 2005

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