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Electrochemical Characterization of TiO2 Blocking Layers Prepared by Reactive DC Magnetron Sputtering
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.ORCID iD: 0000-0002-8279-5163
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2009 (English)In: Journal of Electroanalytical Chemistry, ISSN 0022-0728, E-ISSN 1873-2569, Vol. 637, no 1-2, p. 79-83Article in journal (Refereed) Published
Abstract [en]

Thin TiO2 (anatase) films were prepared by reactive DC magnetron sputtering and characterized in detail. Specifically, they were tested as compact blocking underlayers in dye-sensitized solar cells. Elastic recoil detection analysis and optical measurement showed some porosity in the sputtered films, but electrochemical measurements demonstrated good blocking characteristics. This suggests the presence of small voids rather than pinholes in the deposited films. In the case of an iodide/iodine redox couple, thin underlayers (similar to 20 nm) improved the fill factor without affecting other properties of the cell. in case of a ferrocene/ferrocenium-based electrolyte, the presence of underlayers was necessary to obtain functional dye-sensitized solar cells.

Place, publisher, year, edition, pages
2009. Vol. 637, no 1-2, p. 79-83
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Chemical Sciences Engineering and Technology
Research subject
Solid State Physics
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URN: urn:nbn:se:uu:diva-122163DOI: 10.1016/j.jelechem.2009.10.004ISI: 000273448600012OAI: oai:DiVA.org:uu-122163DiVA: diva2:308519
Available from: 2011-09-21 Created: 2010-04-06 Last updated: 2017-12-12Bibliographically approved

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Niklasson, Gunnar A.Granqvist, Claes-GöranBoschloo, Gerrit
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