Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence

Bavykin, Dmitry V., Gordeev, Sergey N., Moskalenko, Andriy, Lapkin, Alexei A. and Walsh, Frank C. 2005. Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence. Journal of Physical Chemistry B 109 (18) , pp. 8565-8569. 10.1021/jp050762m

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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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics Q Science > QD Chemistry
Publisher:	American Chemical Society
ISSN:	1520-6106
Last Modified:	23 Mar 2017 04:01
URI:	https://orca.cardiff.ac.uk/id/eprint/46061

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