Exciton decay dynamics in individual carbon nanotubes at room temperature

Tobias Gokus; Achim Hartschuh; Hayk Harutyunyan; Maria Allegrini; Frank Hennrich; Manfred Kappes; Alexander A. Green; Mark C. Hersam; Paulo T. Araújo; Ado Jorio

doi:10.1063/1.2913009

Exciton decay dynamics in individual carbon nanotubes at room temperature

Tobias Gokus^*, Achim Hartschuh, Hayk Harutyunyan, Maria Allegrini, Frank Hennrich, Manfred Kappes, Alexander A. Green, Mark C. Hersam, Paulo T. Araújo, Ado Jorio

^*Corresponding author for this work

Materials Science and Engineering

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

35 Scopus citations

Abstract

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.

Original language	English (US)
Article number	153116
Journal	Applied Physics Letters
Volume	92
Issue number	15
DOIs	https://doi.org/10.1063/1.2913009
State	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2913009

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@article{4d2dcfc62cda4bd0b10e892e782559c8,

title = "Exciton decay dynamics in individual carbon nanotubes at room temperature",

abstract = "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.",

author = "Tobias Gokus and Achim Hartschuh and Hayk Harutyunyan and Maria Allegrini and Frank Hennrich and Manfred Kappes and Green, {Alexander A.} and Hersam, {Mark C.} and Ara{\'u}jo, {Paulo T.} and Ado Jorio",

note = "Funding Information: We thank H. Qian and N. Hartmann for experimental assistance. Financial support by the DAAD, CAPES, and the DFG through Grant No. HA4405/3-1 and Nanosystem Initiative M{\"u}nchen (NIM) is gratefully acknowledged. This work was also funded by the U.S. National Science Foundation under Award Nos. EEC-0647560 and DMR-0706067.",

year = "2008",

doi = "10.1063/1.2913009",

language = "English (US)",

volume = "92",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Exciton decay dynamics in individual carbon nanotubes at room temperature

AU - Gokus, Tobias

AU - Hartschuh, Achim

AU - Harutyunyan, Hayk

AU - Allegrini, Maria

AU - Hennrich, Frank

AU - Kappes, Manfred

AU - Green, Alexander A.

AU - Hersam, Mark C.

AU - Araújo, Paulo T.

AU - Jorio, Ado

N1 - Funding Information: We thank H. Qian and N. Hartmann for experimental assistance. Financial support by the DAAD, CAPES, and the DFG through Grant No. HA4405/3-1 and Nanosystem Initiative München (NIM) is gratefully acknowledged. This work was also funded by the U.S. National Science Foundation under Award Nos. EEC-0647560 and DMR-0706067.

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

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U2 - 10.1063/1.2913009

DO - 10.1063/1.2913009

M3 - Article

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VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 15

M1 - 153116

ER -

Exciton decay dynamics in individual carbon nanotubes at room temperature

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