Resonance Raman scattering studies in Br2 -adsorbed double-wall carbon nanotubes

A. G. Souza Filho, M. Endo, H. Muramatsu, T. Hayashi, Y. A. Kim, E. B. Barros, N. Akuzawa, Ge G. Samsonidze, R. Saito, M. S. Dresselhaus

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39 Citations (Scopus)

Abstract

The vibrational and electronic properties of Br2 -adsorbed double-wall carbon nanotubes (DWNTs) were investigated by resonance Raman scattering. Special attention was given to distinguish the behavior between S/M and M/S outer/inner semiconducting (S) and metallic (M) tubes. By using three laser excitation energies 2.33, 1.96, and 1.58 eV, resonance Raman spectra were obtained for the DWNTs before and after bromine adsorption, and also for the Br-Br molecular resonance, thereby facilitating the study of charge transfer between the DWNTs and the bromine. It was found that Br2 molecules act as acceptors and that metallic nanotubes are specially sensitive to the presence of Br2 molecules even when they constitute the inner tubes of DWNTs.

Original languageEnglish
Article number235413
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number23
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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