Dual distributions for the metallic and semiconducting single-walled carbon nanotubes observed by Raman spectroscopy
Journal Title: Carbon - Science and Technology - Year 2008, Vol 1, Issue 1
Abstract
The prospective applicability of single-walled carbon nanotubes (SWNT) is highly dependent on its controlled synthesis. Effects of few macroscopic growth-conditions (such as catalyst composition, temperature of deposition etc.) reflected on the distributions of SWNT (diameter, chiralities and semiconducting-metallic nature), are studied by Raman spectroscopic analysis. We report the presence of two different diameter distributions for as-grown metallic and semiconducting SWNT, the metallic tubes having larger average diameters than their semiconducting counterpart. We hope that, in future, it should be possible to selectively synthesize SWNT with pre-determined chirality, diameter and metallic/semiconducting nature.
Authors and Affiliations
Krishnendu Bhattacharyya, Yoshiyuki Suda, Atsushi Okita, Takeshi Saito, Atsushi Ozeki, Masayuki Maekawa, Junichi Takayama, Hirotake Sugawara, Yosuke Sakai
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