Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence
Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence
Optical absorption and photoluminescence (PL) properties of colloidal TiO2 nanotubes, produced by the alkali hydrothermal method, were studied at room temperature in the range 300-700 nm. Nanotubes having an internal diameter in the range 2.5-5 nm have very similar optical properties, in contrast to the expected behavior for quasi-1-D systems. This is explained by the complete thermal smearing of all 1-D effects, due to the large effective mass of charge carriers in TiO2, resulting in an apparent 2-D behavior of TiO2 nanotubes.
8565-8569
Bavykin, Dimitry V.
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Gordeev, Sergey N.
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Moskalenko, Andriy V.
036d6128-914c-4305-92a3-765d44d4e522
Lapkin, Alexei A.
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Walsh, Frank C.
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12 May 2005
Bavykin, Dimitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Gordeev, Sergey N.
b34713b8-43fc-4eb4-93b5-352dbc004d9f
Moskalenko, Andriy V.
036d6128-914c-4305-92a3-765d44d4e522
Lapkin, Alexei A.
e5550045-9bdc-4cca-873a-16c2f37a64c8
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Bavykin, Dimitry V., Gordeev, Sergey N., Moskalenko, Andriy V., Lapkin, Alexei A. and Walsh, Frank C.
(2005)
Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence.
The Journal of Physical Chemistry B, 109 (18), .
(doi:10.1021/jp050762m).
Abstract
Optical absorption and photoluminescence (PL) properties of colloidal TiO2 nanotubes, produced by the alkali hydrothermal method, were studied at room temperature in the range 300-700 nm. Nanotubes having an internal diameter in the range 2.5-5 nm have very similar optical properties, in contrast to the expected behavior for quasi-1-D systems. This is explained by the complete thermal smearing of all 1-D effects, due to the large effective mass of charge carriers in TiO2, resulting in an apparent 2-D behavior of TiO2 nanotubes.
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Published date: 12 May 2005
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Local EPrints ID: 23576
URI: http://eprints.soton.ac.uk/id/eprint/23576
ISSN: 1520-5207
PURE UUID: 21e3e016-c9e2-4639-852e-451d1cd39b72
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Date deposited: 20 Mar 2006
Last modified: 15 Mar 2024 06:48
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Author:
Sergey N. Gordeev
Author:
Andriy V. Moskalenko
Author:
Alexei A. Lapkin
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