Raman spectroscopy study of heat-treated and boron-doped double wall carbon nanotubes

F. Villalpando-Paez, H. Son, S. G. Chou, Ge G. Samsonidze, Y. A. Kim, H. Muramatsu, T. Hayashi, M. Endo, M. Terrones, M. S. Dresselhaus

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

We performed Raman spectroscopy experiments on undoped and boron-doped double walled carbon nanotubes (DWNTs) that exhibit the "coalescence inducing mode" as these DWNTs are heat treated to temperatures between 1200°C and 2000°C. The fact that boron doping promotes DWNT coalescence at lower temperatures allowed us to study in greater detail the behavior of first- and second-order Raman modes as a function of temperature with regard to the coalescence process. Furthermore, by using various excitation laser energies we probed DWNTs with different metallic (M) and semiconducting (S) inner and outer tubes. We find that regardless of their M and S configurations, the smaller diameter nanotubes disappear at a faster rate than their larger diameter counterparts as the heat treatment temperature is increased. We also observe that the frequency of the G band is mostly determined by the diameter of the semiconducting layer of those DWNTs that are in resonance with the laser excitation energy. Finally, we explain the contributions to the G′ band from the inner and outer layers of a DWNT.

Original languageEnglish (US)
Article number035419
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume80
Issue number3
DOIs
StatePublished - Aug 6 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Raman spectroscopy study of heat-treated and boron-doped double wall carbon nanotubes'. Together they form a unique fingerprint.

  • Cite this

    Villalpando-Paez, F., Son, H., Chou, S. G., Samsonidze, G. G., Kim, Y. A., Muramatsu, H., Hayashi, T., Endo, M., Terrones, M., & Dresselhaus, M. S. (2009). Raman spectroscopy study of heat-treated and boron-doped double wall carbon nanotubes. Physical Review B - Condensed Matter and Materials Physics, 80(3), [035419]. https://doi.org/10.1103/PhysRevB.80.035419