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Tailoring the morphology of WO₃films with substitutional cation doping: Effect on the photoelectrochemical properties

Tailoring the morphology of WO₃films with substitutional cation doping: Effect on the photoelectrochemical properties

Solarska, R., Alexander, B. D., Braun, A., Jurczakowski, R., Fortunato, G., Stiefel, M., Graule, T. and Augustynski, J. (2009) Tailoring the morphology of WO₃films with substitutional cation doping: Effect on the photoelectrochemical properties. Electrochimica Acta, 55 (26). pp. 7780-7787. ISSN 0013-4686 (doi:10.1016/j.electacta.2009.12.016)

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Abstract

With the aim of improving the performance and extending the range of applications of mesoporous WO₃films, which were initially developed for the photoelectrochemical oxidation of water, we investigated the effect of a number of dopants (lithium, silicon, ruthenium, molybdenum and tin) upon the transparency, crystallinity, porosity and conductivity of the modified films. Tin, molybdenum and silicon were shown to improve the electrochromic behaviour of the layers whereas ruthenium enhanced considerably the electronic conductivity of the WO₃films. Interestingly, most of the dopants also affected the film morphology and the size of WO₃nanocrystals. X-ray photoelectron spectra revealed absence of significant segregation of doping elements within the film. Raman analyses confirmed that the monoclinic structure of WO₃films does not change upon substitutional cation doping; thus, the crystallinity of WO₃films is maintained.

Item Type: Article
Additional Information: [1] Available online: 16 December 2009. Publication date (Print): 1 November 2010. [2] Published in Electrochimica Acta, Volume 55, Issue 26, 1 November 2010, pp. 7780–7787. [3] This paper was first presented at the 7th Spring Meeting of the International-Society-of-Electrochemistry on Recent Advances in Electrocatalysis and Photoelectrocatalysis held from 22-25 March 2009 in Szczyrk, Poland.
Uncontrolled Keywords: mesoporous tungsten trioxide films, metal doping, tailoring of morphology
Subjects: T Technology > TP Chemical technology
Q Science > QC Physics
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 08 Dec 2016 16:32
URI: http://gala.gre.ac.uk/id/eprint/2098

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