DC Field | Value | Language |
---|---|---|
dc.contributor.author | Tsvetkov, Nikolay A | ko |
dc.contributor.author | Larina, Liudmila | ko |
dc.contributor.author | Shevaleevskiy, Oleg | ko |
dc.contributor.author | Ahn, Byung-Tae | ko |
dc.date.accessioned | 2013-03-11T08:23:50Z | - |
dc.date.available | 2013-03-11T08:23:50Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.158, no.11, pp.1281 - 1285 | - |
dc.identifier.issn | 0013-4651 | - |
dc.identifier.uri | http://hdl.handle.net/10203/98781 | - |
dc.description.abstract | Dye-sensitized solar cells (DSCs) can be regarded as third-generation photovoltaic devices which have low fabrication costs and high photovoltaic performance. The efficiency of DSCs is influenced by the electron transport within the TiO2-dye-electrolyte system and can be improved by modifying the TiO2 electrode with Nb doping. DSCs with Nb-doped and undoped TiO2 electrodes were fabricated and investigated. The Nb-doped TiO2 layers were prepared by a sol-gel method followed by hydrothermal treatment with an Nb content ranging from 0.7 to 3.5 mol%. The obtained layers were characterized using XRD, SEM, TEM, and low temperature PL measurements. Electrical impedance spectroscopy was used to study the electronic transport at the TiO2-electrolyte interface. The electron lifetime, was found to increase from 8 ms for DSCs with undoped TiO2 layers to 26 ms for cells based on TiO2 electrodes doped with 2.7 mol% of Nb. The increase in the electron lifetime correlates with a rise in the short circuit current (J(sc)). Nb doping concentrations lower than 1.7 mol% increase the resistance at the TiO2-electrolyte interface and consequently increase the value of the open circuit voltage (V-oc). Doping with 1.7 mol% of Nb increases the both J(sc) and V-oc values and significantly improves the device efficiency. (C) 2011 The Electrochemical Society. [DOI: 10.1149/2.010111jes] All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELECTROCHEMICAL SOC INC | - |
dc.subject | EFFICIENCY | - |
dc.title | Effect of Nb Doping of TiO2 Electrode on Charge Transport in Dye-Sensitized Solar Cells | - |
dc.type | Article | - |
dc.identifier.wosid | 000295626000009 | - |
dc.identifier.scopusid | 2-s2.0-80054021451 | - |
dc.type.rims | ART | - |
dc.citation.volume | 158 | - |
dc.citation.issue | 11 | - |
dc.citation.beginningpage | 1281 | - |
dc.citation.endingpage | 1285 | - |
dc.citation.publicationname | JOURNAL OF THE ELECTROCHEMICAL SOCIETY | - |
dc.contributor.localauthor | Ahn, Byung-Tae | - |
dc.contributor.nonIdAuthor | Larina, Liudmila | - |
dc.contributor.nonIdAuthor | Shevaleevskiy, Oleg | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | EFFICIENCY | - |
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