Increased photocurrent response in Nb-doped TiO2 nanotubes

Min Yang; Himendra Jha; Ning Liu; Patrik Schmuki

doi:10.1039/C1JM12961A

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Increased photocurrent response in Nb-doped TiO₂ nanotubes†

Min Yang,‡^a Himendra Jha,^a Ning Liu^a and Patrik Schmuki*^a

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* Corresponding authors

^a Department of Materials Science, WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, Erlangen, Germany
E-mail: schmuki@ww.uni-erlangen.de
Fax: +49 9131 8527582
Tel: +49 9131 8527575

Abstract

Nb-doped TiO₂ nanotube (NT) layers were grown by electrochemical anodization of Ti–Nb alloys. To successfully activate Nb doping the oxide tubes need to be annealed at sufficiently high temperatures (∼650 °C). For tubes doped with 0.1 wt% Nb not only a considerable increase in the electrical conductivity but also a significantly enhanced photocurrent (superior to any pure TiO₂ nanotube layer (anatase or rutile)) was obtained.

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Article information

DOI: https://doi.org/10.1039/C1JM12961A
Article type: Communication
Submitted: 26 Jun 2011
Accepted: 19 Aug 2011
First published: 06 Sep 2011

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J. Mater. Chem., 2011,21, 15205-15208

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Increased photocurrent response in Nb-doped TiO₂ nanotubes

M. Yang, H. Jha, N. Liu and P. Schmuki, J. Mater. Chem., 2011, 21, 15205 DOI: 10.1039/C1JM12961A

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Journal of Materials Chemistry