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.
|Autori interni:||ALLEGRINI, MARIA|
|Autori:||Gokus T; Hartschuh A; Harutyunyan H; Allegrini M; Hennrich F; Kappes M; Green AA; Hersam MC; Araujo PT; Jorio A|
|Titolo:||Exciton decay dynamics in individual carbon nanotubes at room temperature RID G-3268-2010 RID B-6512-2008 RID B-6739-2009 RID F-2141-2010|
|Anno del prodotto:||2008|
|Digital Object Identifier (DOI):||10.1063/1.2913009|
|Appare nelle tipologie:||1.1 Articolo in rivista|