Abstract
Using TEM, absorption and photoluminescence-excitation spectroscopy we have shown that nitrogen and nitrogen/boron doping of single-walled carbon nanotubes produce significant changes in both the optical properties and the diameter distribution of nanotubes produced by the arc-discharge method. Smaller diameter tubes are preferentially formed in the presence of boron. In addition the presence of nitrogen is found to significantly affect the emission properties of the nanotube ensemble, causing a shift in the dominant emission to lower energies, possibly due to changes in the bundling structure of the nanotubes in solution, but only very small changes are observed in the emission energies for individual nanotubes.
Original language | English (US) |
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Pages (from-to) | 2752-2757 |
Number of pages | 6 |
Journal | Carbon |
Volume | 44 |
Issue number | 13 |
DOIs | |
State | Published - Nov 2006 |
Externally published | Yes |
Bibliographical note
Funding Information:Parts of this work were funded by EPSRC. MG acknowledges contract HPRN-CT-2000-00157. LJL would thank the Swire Group for financial support. ANK thanks the Royal Society ESF and RCUK for funding.
Keywords
- Carbon nanotubes
- Doped carbon
- Luminescence
- Transmission electron microscopy
ASJC Scopus subject areas
- General Chemistry
- General Materials Science