Nano Archive

Exciton localization of single-walled carbon nanotubes revealed by femtosecond excitation correlation spectroscopy

Hirori, Hideki and Matsuda, Kazunari and Miyauchi, Yuhei and Maruyama, Shigeo and Kanemitsu, Yoshihiko (2006) Exciton localization of single-walled carbon nanotubes revealed by femtosecond excitation correlation spectroscopy. PHYSICAL REVIEW LETTERS, 97 (25).

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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.97.257...

Abstract

Photoluminescence (PL) dynamics in single-walled carbon nanotubes (SWNTs) has been studied by the femtosecond excitation correlation method with a 150 fs time resolution. The SWNT samples were synthesized by different methods and suspended in gelatin films or D2O solutions. The PL dynamics of SWNTs depends on the local environment surrounding the SWNTs rather than the synthesis methods. The very weak temperature dependence of tau(PL) and the environment-dependent tau(PL) reveal that the PL relaxation process is dominated by the interplay between free excitons and weakly localized excitons.

Item Type:Article
Subjects:Physical Science > Nano objects
Physical Science > Photonics
ID Code:3235
Deposited By:Anuj Seth
Deposited On:13 Jan 2009 17:29
Last Modified:20 Jan 2009 15:53

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