Electrochemical Properties of Transparent Conducting Films of Tantalum-Doped Titanium Dioxide
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00471904" target="_blank" >RIV/61388955:_____/17:00471904 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.electacta.2017.02.124" target="_blank" >http://dx.doi.org/10.1016/j.electacta.2017.02.124</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2017.02.124" target="_blank" >10.1016/j.electacta.2017.02.124</a>
Alternative languages
Result language
angličtina
Original language name
Electrochemical Properties of Transparent Conducting Films of Tantalum-Doped Titanium Dioxide
Original language description
Highly conducting, optically transparent Ta-doped TiO2 (anatase) thin films are grown on ordinary sodalime glass substrates by pulsed-laser deposition. They exhibit quasi-reversible cyclic voltammograms of Fe(CN)(6)(3/4) and dimethylviologen redox couples, mimicking the electrochemical activity of F-doped SnO2 (FTO). Hence, our Ta-doped titania films can prospectively replace FTO, e.g. in homo-junction dyesensitized and perovskite solar cells. However, these films are idle for the Ru(bpy)(3)(2+) oxidation, which is attributed to the space-charge barrier. The flatband potential of our Ta-doped TiO2 is comparable to that of an undoped reference film and/or of the pristine anatase single-crystal electrode. Our films show photoelectrochemical activity upon irradiation with UV light at potentials positive to flatband. The UV-photocurrents decrease proportionally to the increase of Ta-content. The Li-insertion ability analogously decreases with increasing Ta-content. This is attributed to the positive charge of Ta5+ cations which occupy the Ti4+ sites in anatase lattice and thus impede the Li+-transport. Consistent with the quasi-metallic nature of our films, the Li-extraction peak in cyclic voltammograms shows no cut at larger potentials. (C) 2017 Elsevier Ltd. All rights reserved.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GA13-07724S" target="_blank" >GA13-07724S: Materials engineering towards Innovative Graetzel solar cells</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electrochimica acta
ISSN
0013-4686
e-ISSN
—
Volume of the periodical
232
Issue of the periodical within the volume
APR 2017
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
44-53
UT code for WoS article
000398327300007
EID of the result in the Scopus database
2-s2.0-85014086952