Birkett, Paul R., Maultzsch, J., Riech, S., Thomsen, C., Webster, S., Czerw, R., Carroll, D. L., Vieira, S. M. C. and Rego, Chris A. (2002) Raman characterisation of boron-doped multiwalled carbon nanotubes. Applied physics letters, 81 (14). pp. 2647-2649. ISSN 1077-3118
File not available for download.Abstract
We present first- and second-order Raman spectra of boron-doped multiwalled carbon nanotubes. The Raman intensities are analyzed as a function of the nominal boron concentration. The intensities of both the D mode and the high-energy mode in the first-order spectra increase with increasing boron concentration, if normalized with respect to a second-order mode. We interpret this result as an indication that the high-energy mode in carbon nanotubes is defect-induced in a similar way as the D mode. Based on this result, we provide a preliminary quantitative relation between the boron concentration and the Raman intensity ratios.
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