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Proceedings Paper

Stochastic models of exciton dynamics in a 4-um long single air-suspended single-walled carbon nanotube
Author(s): Y.-F. Xiao; T. Q. Nhan; M. W. B. Wilson; James M. Fraser
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Paper Abstract

Optically excited single-walled carbon nanotube exciton dynamics are predicted using a stochastic model including linear and nonlinear decay pathways. Results are fitted to the photoluminescence behavior of a single 4-μm long airsuspended (9,8) single-walled carbon nanotube. Hard photoluminescence saturation is observed even with only a few excitons are present in the single-walled carbon nanotube. The absorption coefficient is estimated to be 0.01 - 0.04, and photoluminescence quantum efficiency is 13%. Femtosecond excitation correlation spectroscopy dynamics are consistent with linear and nonlinear (exciton-exciton annihilation) lifetimes of 80 ps and 0.8 ps respectively.

Paper Details

Date Published: 24 February 2009
PDF: 12 pages
Proc. SPIE 7201, Laser Applications in Microelectronic and Optoelectronic Manufacturing VII, 720111 (24 February 2009); doi: 10.1117/12.809467
Show Author Affiliations
Y.-F. Xiao, Queen's Univ. (Canada)
T. Q. Nhan, Queen's Univ. (Canada)
M. W. B. Wilson, Queen's Univ. (Canada)
James M. Fraser, Queen's Univ. (Canada)

Published in SPIE Proceedings Vol. 7201:
Laser Applications in Microelectronic and Optoelectronic Manufacturing VII
Michel Meunier; Andrew S. Holmes; Hiroyuki Niino; Bo Gu, Editor(s)

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