Phonon-assisted excitonic recombination channels observed in DNA-wrapped carbon nanotubes using photoluminescence spectroscopy - PubMed
- ️Sat Jan 01 2005
. 2005 Apr 1;94(12):127402.
doi: 10.1103/PhysRevLett.94.127402. Epub 2005 Apr 1.
F Plentz, J Jiang, R Saito, D Nezich, H B Ribeiro, A Jorio, M A Pimenta, Ge G Samsonidze, A P Santos, M Zheng, G B Onoa, E D Semke, G Dresselhaus, M S Dresselhaus
Affiliations
- PMID: 15903960
- DOI: 10.1103/PhysRevLett.94.127402
Phonon-assisted excitonic recombination channels observed in DNA-wrapped carbon nanotubes using photoluminescence spectroscopy
S G Chou et al. Phys Rev Lett. 2005.
Abstract
By using a sample of DNA-wrapped single-wall carbon nanotubes strongly enriched in the (6,5) nanotube, photoluminescence emissions observed at special excitation energy values were identified with specific mechanisms of phonon-assisted excitonic absorption and recombination processes associated with (6,5) nanotubes, including one-phonon, two-phonon, and some continuous-luminescence processes. Such detailed processes are not separately identified in three-dimensional semiconducting materials. A general theoretical framework is presented to interpret the experimentally observed phonon-assisted processes in terms of excitonic states.
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