Nano Archive

Exciton decay dynamics in individual carbon nanotubes at room temperature

Gokus, Tobias and Hartschuh, Achim and Harutyunyan, Hayk and Allegrini, Maria and Hennrich, Frank and Kappes, Manfred and Green, Alexander A. and Hersam, Mark C. and Araujo, Paulo T. and Jorio, Ado (2008) Exciton decay dynamics in individual carbon nanotubes at room temperature. APPLIED PHYSICS LETTERS, 92 (15).

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We studied the exciton decay dynamics of individual semiconducting single-walled carbon nanotubes at room temperature using time-resolved photoluminescence spectroscopy. The photoluminescence decay from nanotubes of the same (n,m) type follows a single exponential decay function, however, with lifetimes varying between about 1 and 40 ps from nanotube to nanotube. A correlation between broad photoluminescence spectra and short lifetimes was found and explained by defects promoting both nonradiative decay and vibronic dephasing. (C) 2008 American Institute of Physics.

Item Type:Article
Subjects:Physical Science > Nanophysics
Analytical Science > Microscopy and probe methods
Physical Science > Nano objects
ID Code:2421
Deposited By:Farnush Anwar
Deposited On:23 Dec 2008 13:32
Last Modified:31 Mar 2009 15:51

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