Temperature and magnetic field dependent photoluminescence from carbon nanotubes

R. J. Nicholas; I. B. Mortimer; L. J. Li; A. Nish; O. Portugall; G. L.J.A. Rikken

doi:10.1142/s0217979207042616

Temperature and magnetic field dependent photoluminescence from carbon nanotubes

R. J. Nicholas^*, I. B. Mortimer, L. J. Li, A. Nish, O. Portugall, G. L.J.A. Rikken

^*Corresponding author for this work

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

2 Scopus citations

Abstract

Photoluminescence as a function of temperature and magnetic field from single walled carbon nanotube solutions is described. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The emission energies show a large red-shift due to the introduction of an Aharanov-Bohm phase by magnetic field along the tube axis and the luminescence intensity is strongly enhanced at low temperatures due to the mixing of the different valley states of the excitons.

Original language	English (US)
Pages (from-to)	1180-1188
Number of pages	9
Journal	International Journal of Modern Physics B
Volume	21
Issue number	8-9
DOIs	https://doi.org/10.1142/s0217979207042616
State	Published - Apr 10 2007
Externally published	Yes

Keywords

Carbon nanotubes
Excitons
PLE
Photoluminescence

ASJC Scopus subject areas

Condensed Matter Physics
Statistical and Nonlinear Physics

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10.1142/s0217979207042616

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title = "Temperature and magnetic field dependent photoluminescence from carbon nanotubes",

abstract = "Photoluminescence as a function of temperature and magnetic field from single walled carbon nanotube solutions is described. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The emission energies show a large red-shift due to the introduction of an Aharanov-Bohm phase by magnetic field along the tube axis and the luminescence intensity is strongly enhanced at low temperatures due to the mixing of the different valley states of the excitons.",

keywords = "Carbon nanotubes, Excitons, PLE, Photoluminescence",

author = "Nicholas, {R. J.} and Mortimer, {I. B.} and Li, {L. J.} and A. Nish and O. Portugall and Rikken, {G. L.J.A.}",

year = "2007",

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T1 - Temperature and magnetic field dependent photoluminescence from carbon nanotubes

AU - Nicholas, R. J.

AU - Mortimer, I. B.

AU - Li, L. J.

AU - Nish, A.

AU - Portugall, O.

AU - Rikken, G. L.J.A.

PY - 2007/4/10

Y1 - 2007/4/10

N2 - Photoluminescence as a function of temperature and magnetic field from single walled carbon nanotube solutions is described. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The emission energies show a large red-shift due to the introduction of an Aharanov-Bohm phase by magnetic field along the tube axis and the luminescence intensity is strongly enhanced at low temperatures due to the mixing of the different valley states of the excitons.

AB - Photoluminescence as a function of temperature and magnetic field from single walled carbon nanotube solutions is described. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The emission energies show a large red-shift due to the introduction of an Aharanov-Bohm phase by magnetic field along the tube axis and the luminescence intensity is strongly enhanced at low temperatures due to the mixing of the different valley states of the excitons.

KW - Carbon nanotubes

KW - Excitons

KW - PLE

KW - Photoluminescence

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DO - 10.1142/s0217979207042616

M3 - Article

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EP - 1188

JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

IS - 8-9

ER -

Temperature and magnetic field dependent photoluminescence from carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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