Lefebvre, J. and Finnie, P. (2007) Polarized photoluminescence excitation spectroscopy of single-walled carbon nanotubes. PHYSICAL REVIEW LETTERS, 98 (16).
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Abstract
The polarized photoluminescence excitation spectra of twenty-five single-walled carbon nanotube species are reported. For light polarized along the nanotube axis, the main absorption resonance at E22 shows sidebands attributed to phonon assisted absorption. Sidebands to E11 have a diameter dependent energy and are assigned to excited excitonic states. Along with longitudinal excitations, several transverse excitations are identified. The transverse E12 resonance has a specific family pattern with energy close to E22. Comparison with theory provides an estimate of the strength of the Coulomb interaction.
| Item Type: | Article |
|---|---|
| Subjects: | Physical Science > Nano objects Physical Science > Photonics |
| ID Code: | 3175 |
| Deposited By: | Anuj Seth |
| Deposited On: | 26 May 2009 15:39 |
| Last Modified: | 26 May 2009 15:39 |
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