Ultrafast carrier dynamics in single-walled carbon nanotubes probed by femtosecond spectroscopy

Ying Zhong Ma; Jens Stenger; Jörg Zimmermann; Sergei M. Bachilo; Richard E. Smalley; R. Bruce Weisman; Graham R. Fleming

doi:10.1063/1.1640339

Ultrafast carrier dynamics in single-walled carbon nanotubes probed by femtosecond spectroscopy

Ying Zhong Ma, Jens Stenger, Jörg Zimmermann, Sergei M. Bachilo, Richard E. Smalley, R. Bruce Weisman, Graham R. Fleming

Research output: Contribution to journal › Article › peer-review

210 Scopus citations

Abstract

The ultrafast carrier dynamics in individual semiconducting single-walled carbon nanotubes was discussed. It was found that after photoexcitation of the second van Hove singularity of a specific tube structure, the relaxation of electrons and holes to the fundamental band edge occurred to within 100 fs. The fluorescence decay from this band was independent on the excitation density. Analysis suggests a branching to emissive and trap states following photoexcitation.

Original language	English
Pages (from-to)	3368-3373
Number of pages	6
Journal	Journal of Chemical Physics
Volume	120
Issue number	7
DOIs	https://doi.org/10.1063/1.1640339
State	Published - Feb 15 2004
Externally published	Yes

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abstract = "The ultrafast carrier dynamics in individual semiconducting single-walled carbon nanotubes was discussed. It was found that after photoexcitation of the second van Hove singularity of a specific tube structure, the relaxation of electrons and holes to the fundamental band edge occurred to within 100 fs. The fluorescence decay from this band was independent on the excitation density. Analysis suggests a branching to emissive and trap states following photoexcitation.",

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AU - Bachilo, Sergei M.

AU - Smalley, Richard E.

AU - Weisman, R. Bruce

AU - Fleming, Graham R.

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AB - The ultrafast carrier dynamics in individual semiconducting single-walled carbon nanotubes was discussed. It was found that after photoexcitation of the second van Hove singularity of a specific tube structure, the relaxation of electrons and holes to the fundamental band edge occurred to within 100 fs. The fluorescence decay from this band was independent on the excitation density. Analysis suggests a branching to emissive and trap states following photoexcitation.

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Ultrafast carrier dynamics in single-walled carbon nanotubes probed by femtosecond spectroscopy

Abstract

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