Título
Raman spectroscopy study of heat-treated and boron-doped double wall carbon nanotubes
Autor
Georgy Samsonidze
Hiroyuki Muramatsu
MAURICIO TERRONES MALDONADO
Dresselhaus Mildred
Nivel de Acceso
Acceso Abierto
Identificador alterno
doi: https://doi.org/10.1103/PhysRevB.80.035419
Resumen o descripción
"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."
Editor
American Physical Society
Fecha de publicación
julio de 2009
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Audiencia
Público en general
Sugerencia de citación
F. Villalpando-Paez, H. Son, S. G. Chou, Ge. G. Samsonidze, Y. A. Kim, H. Muramatsu, T. Hayashi, M. Endo, M. Terrones, and M. S. Dresselhaus Phys. Rev. B 80, 035419 – Published 16 July 2009
Repositorio Orígen
Repositorio IPICYT
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