Temperature-dependent excitonic decay and multiple states in single-wall carbon nanotubes

Wyatt K. Metzger; Timothy J. McDonald; Chaiwat Engtrakul; Jeffrey L. Blackburn; Gregory D. Scholes; Garry Rumbles; Michael J. Heben

doi:10.1021/jp066725s

Temperature-dependent excitonic decay and multiple states in single-wall carbon nanotubes

Wyatt K. Metzger, Timothy J. McDonald, Chaiwat Engtrakul, Jeffrey L. Blackburn, Gregory D. Scholes, Garry Rumbles, Michael J. Heben

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

21 Scopus citations

Abstract

We have performed steady-state photoluminescence, time-correlated single photon counting, and Raman spectroscopy measurements on single-wall carbon nanotubes from 4 to 293 K. We observe novel photoluminescence spectra that cannot be attributed to vibronic transitions and verify the existence and energy levels of weakly emissive excitonic states. By combining photoluminescence intensity and lifetime data, we determine how nonradiative and radiative excitonic decay rates change as a function of temperature and contrast this with theoretical predictions. The results suggest that recombination kinetics are influenced by multiple excitonic states, including a dark lower state.

Original language	English (US)
Pages (from-to)	3601-3606
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	9
DOIs	https://doi.org/10.1021/jp066725s
State	Published - Mar 8 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp066725s

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title = "Temperature-dependent excitonic decay and multiple states in single-wall carbon nanotubes",

abstract = "We have performed steady-state photoluminescence, time-correlated single photon counting, and Raman spectroscopy measurements on single-wall carbon nanotubes from 4 to 293 K. We observe novel photoluminescence spectra that cannot be attributed to vibronic transitions and verify the existence and energy levels of weakly emissive excitonic states. By combining photoluminescence intensity and lifetime data, we determine how nonradiative and radiative excitonic decay rates change as a function of temperature and contrast this with theoretical predictions. The results suggest that recombination kinetics are influenced by multiple excitonic states, including a dark lower state.",

author = "Metzger, {Wyatt K.} and McDonald, {Timothy J.} and Chaiwat Engtrakul and Blackburn, {Jeffrey L.} and Scholes, {Gregory D.} and Garry Rumbles and Heben, {Michael J.}",

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T1 - Temperature-dependent excitonic decay and multiple states in single-wall carbon nanotubes

AU - Metzger, Wyatt K.

AU - McDonald, Timothy J.

AU - Engtrakul, Chaiwat

AU - Blackburn, Jeffrey L.

AU - Scholes, Gregory D.

AU - Rumbles, Garry

AU - Heben, Michael J.

PY - 2007/3/8

Y1 - 2007/3/8

N2 - We have performed steady-state photoluminescence, time-correlated single photon counting, and Raman spectroscopy measurements on single-wall carbon nanotubes from 4 to 293 K. We observe novel photoluminescence spectra that cannot be attributed to vibronic transitions and verify the existence and energy levels of weakly emissive excitonic states. By combining photoluminescence intensity and lifetime data, we determine how nonradiative and radiative excitonic decay rates change as a function of temperature and contrast this with theoretical predictions. The results suggest that recombination kinetics are influenced by multiple excitonic states, including a dark lower state.

AB - We have performed steady-state photoluminescence, time-correlated single photon counting, and Raman spectroscopy measurements on single-wall carbon nanotubes from 4 to 293 K. We observe novel photoluminescence spectra that cannot be attributed to vibronic transitions and verify the existence and energy levels of weakly emissive excitonic states. By combining photoluminescence intensity and lifetime data, we determine how nonradiative and radiative excitonic decay rates change as a function of temperature and contrast this with theoretical predictions. The results suggest that recombination kinetics are influenced by multiple excitonic states, including a dark lower state.

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JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

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ER -

Temperature-dependent excitonic decay and multiple states in single-wall carbon nanotubes

Abstract

All Science Journal Classification (ASJC) codes

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