Journal
CARBON
Volume 49, Issue 7, Pages 2264-2272Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2011.01.059
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Single-wall carbon nanotubes were grown by thermal chemical vapor deposition using either boron-or nitrogen-containing feedstocks or both. Carrier doping was evidenced by hardenings of the G band in Raman spectra, and the estimated carrier concentration reached similar to 0.4%. In the G' and D band spectra, a doping-induced component was observed at the high- or low-energy side of the original one. However, the appearance of the new component did not always coincide with the carrier doping. The doped SWCNTs often show radial breathing mode peaks in the off-resonance region, indicating a defect-induced modification of absorption spectrum. (C) 2011 Elsevier Ltd. All rights reserved.
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