Evidence for charge transfer in doped carbon nanotube bundles from Raman scattering
Article Abstract:
Raman spectroscopy is used to look at the effects of exposing single-walled carbon nanotube (SWNT) bundles to typical electron-donor and electron-acceptor dopants. Shifts in the high frequency vibrational modes of the carbon atoms were noted, although there was little change with I squared doping. The shifts provide evidence of a charge transfer between dopants and nanotubes, showing that doping increases SWNT bundle carrier concentration.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Conductivity enhancement in single-walled carbon nanotube bundles doped with K and Br
Article Abstract:
The doping of bulk samples of single-walled carbon nanotubes (SWNTs) through vapour-phase bromine and potassium reactions are reported. Experiments found that doping reduces resistivity at 300 K by up to a factor of 30, and expands the positive area of temperature coefficient resistance. Results indicate that doped SWNTs form a new family of synthetic metals.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
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