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Charge Transfer Reductive Doping of Single Crystal TiO2 Anatase
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SYSNO ASEP 0101031 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Charge Transfer Reductive Doping of Single Crystal TiO2 Anatase Title Reduktivní dopování monokrystalu TiO2 anatasu reakcí přenosu náboje Author(s) Tarábková, Hana (UFCH-W) RID, ORCID
Janda, Pavel (UFCH-W) RID, ORCID
Weber, Jan (UFCH-W) RID
Kavan, Ladislav (UFCH-W) RID, ORCIDSource Title Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. - : Elsevier - ISSN 0022-0728
Roč. 566, č. 1 (2004), s. 73-83Number of pages 11 s. Language eng - English Country CH - Switzerland Keywords titanium dioxide ; charge reversibility ; tunneling spectroscopy Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/01/0617 GA ČR - Czech Science Foundation (CSF) 1P04OCD14.10 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z4040901 - UFCH-W Annotation The doping influence on parameters of the anatase single-crystal electrode and, consequently, on the course of charge transfer reactions proceeding on the electrode/electrolyte interface was examined. The comparison of reductive, thermal and charge transfer doping was discussed. Various techniques including voltammetry, Raman spectroscopy, tunneling and impedance spectroscopy have been utilized for in situ monitoring of the doping process, relative to the amount of charge exchanged. The XPS was employed for ex situ surface analysis. The changes in composition of surface and near-surface-located layers have been found to be responsible for significant variations in the course of both dark and photoassisted charge transfer processes including appearance of sub-bandgap photoeffects. The charge transfer reductive doping/oxidative de-doping is simple and well defined way for in situ tuning the carrier density, which allows modifying the anatase electrode performance. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2006
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