Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3089843
Keywords
carbon nanotubes; phonon-exciton interactions; photoluminescence
Categories
Funding
- JSPS (Japan Society for the Promotion of Science) [20340075]
- MEXT [20048004, 20104006]
- MEXT
- Grants-in-Aid for Scientific Research [20340075] Funding Source: KAKEN
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We studied the temperature and chirality dependence of the photoluminescence (PL) linewidth of single carbon nanotubes to clarify the mechanism of exciton dephasing. The PL linewidth of a single carbon nanotube broadened linearly with increasing temperature, indicating that the linewidth and exciton dephasing are determined through exciton-phonon interactions. From the chirality dependence of the PL linewidth, we concluded that exciton dephasing is caused by both the longitudinal acoustic and twisting phonon modes.
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