Infrared emitting PbSe nanocrystals for telecommunications window applications
Infrared emitting PbSe nanocrystals for telecommunications window applications
We demonstrate the colloidal synthesis of PbSe nanocrystal quantum dots, via an organometallic-precursor route, developed from recently reported techniques. This synthesis typically yields a particle size distribution of approximately 5-10%, as may be inferred from the sharp spectral features seen in absorption and from our effective-mass model correlating spectral features to nanocrystal size. An accurate quantitative analysis, using an infrared reference dye, shows these nanocrystals to exhibit infrared photoluminescence from intrinsic quantum-confined states, with high quantum efficiencies of up to 60% in solution. The wavelength of the photoluminescence may also be conveniently size tuned in order to access the 1.3-1.5 µm 'telecommunications window'. We discuss the significance of this work in the context of future optoelectronic applications.
955-964
Finlayson, C.E.
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Amezcua, A.
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Sazio, P.J.A.
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Walker, P.S.
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Grossel, M.C.
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Curry, R.J.
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Smith, D.C.
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Baumberg, J.J.
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7 May 2005
Finlayson, C.E.
bcc6c2a7-e346-4b08-93e7-be12c7033dac
Amezcua, A.
939e3441-996f-46af-bf68-e3774de7c293
Sazio, P.J.A.
0d6200b5-9947-469a-8e97-9147da8a7158
Walker, P.S.
c56c122e-766d-49c5-81c2-6a4c8b6a8470
Grossel, M.C.
403bf3ff-6364-44e9-ab46-52d84c6f0d56
Curry, R.J.
1ae2a4da-7efe-4333-a34e-0ec20ae95154
Smith, D.C.
d9b2c02d-b7ea-498b-9ea1-208a1681536f
Baumberg, J.J.
78e1ea7e-8c70-404c-bf84-59aafe75cd07
Finlayson, C.E., Amezcua, A., Sazio, P.J.A., Walker, P.S., Grossel, M.C., Curry, R.J., Smith, D.C. and Baumberg, J.J.
(2005)
Infrared emitting PbSe nanocrystals for telecommunications window applications.
Journal of Modern Optics, 52 (7), .
(doi:10.1080/09500340512331327589).
Abstract
We demonstrate the colloidal synthesis of PbSe nanocrystal quantum dots, via an organometallic-precursor route, developed from recently reported techniques. This synthesis typically yields a particle size distribution of approximately 5-10%, as may be inferred from the sharp spectral features seen in absorption and from our effective-mass model correlating spectral features to nanocrystal size. An accurate quantitative analysis, using an infrared reference dye, shows these nanocrystals to exhibit infrared photoluminescence from intrinsic quantum-confined states, with high quantum efficiencies of up to 60% in solution. The wavelength of the photoluminescence may also be conveniently size tuned in order to access the 1.3-1.5 µm 'telecommunications window'. We discuss the significance of this work in the context of future optoelectronic applications.
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Published date: 7 May 2005
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Local EPrints ID: 57227
URI: http://eprints.soton.ac.uk/id/eprint/57227
ISSN: 0950-0340
PURE UUID: 4441cc7c-058b-4a76-88a9-171c8d224a1a
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Date deposited: 13 Aug 2008
Last modified: 16 Mar 2024 03:26
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Author:
C.E. Finlayson
Author:
A. Amezcua
Author:
P.S. Walker
Author:
R.J. Curry
Author:
J.J. Baumberg
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