Abstract
By using a sample of DNA-wrapped single-wall carbon nanotubes strongly enriched in the nanotube, photoluminescence emissions observed at special excitation energy values were identified with specific mechanisms of phonon-assisted excitonic absorption and recombination processes associated with 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.
- Received 8 August 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.127402
©2005 American Physical Society