Evaluating the Critical Thickness of TiO 2 Layer on Insulating Mesoporous Templates for Efficient Current Collection in Dye-Sensitized Solar Cells

Handle URI:
http://hdl.handle.net/10754/598241
Title:
Evaluating the Critical Thickness of TiO 2 Layer on Insulating Mesoporous Templates for Efficient Current Collection in Dye-Sensitized Solar Cells
Authors:
Chandiran, Aravind Kumar; Comte, Pascal; Humphry-Baker, Robin; Kessler, Florian; Yi, Chenyi; Nazeeruddin, Md. Khaja; Grätzel, Michael
Abstract:
In this paper, a way of utilizing thin and conformal overlayer of titanium dioxide on an insulating mesoporous template as a photoanode for dye-sensitized solar cells is presented. Different thicknesses of TiO2 ranging from 1 to 15 nm are deposited on the surface of the template by atomic layer deposition. This systematic study helps unraveling the minimum critical thickness of the TiO2 overlayer required to transport the photogenerated electrons efficiently. A merely 6-nm-thick TiO2 film on a 3-μm mesoporous insulating substrate is shown to transport 8 mA/cm 2 of photocurrent density along with ≈900 mV of open-circuit potential when using our standard donor-π-acceptor sensitizer and Co(bipyridine) redox mediator. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Citation:
Chandiran AK, Comte P, Humphry-Baker R, Kessler F, Yi C, et al. (2013) Evaluating the Critical Thickness of TiO 2 Layer on Insulating Mesoporous Templates for Efficient Current Collection in Dye-Sensitized Solar Cells . Advanced Functional Materials 23: 2775–2781. Available: http://dx.doi.org/10.1002/adfm.201202956.
Publisher:
Wiley-Blackwell
Journal:
Advanced Functional Materials
KAUST Grant Number:
KUS-C1-015-21
Issue Date:
15-Jan-2013
DOI:
10.1002/adfm.201202956
Type:
Article
ISSN:
1616-301X
Sponsors:
The authors acknowledge the financial contribution from EU FP7 project "ORION" grant agreement number NMP-229036. This publication is partially based on work supported by the Center for Advanced Molecular Photovoltaics (Award No KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). A.K.C. is grateful for financial support from the Balzan foundation as part of the 2009 Balzan Prize award to M.G. M.K.N. thanks the World Class University program, Photovoltaic Materials, Department of Material Chemistry, Korea University, Chungnam, 339-700, Korea, funded by the Ministry of Education, Science and Technology through the National Research Foundation of Korea (No. R31-2008-000-10035-0).
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Full metadata record

DC FieldValue Language
dc.contributor.authorChandiran, Aravind Kumaren
dc.contributor.authorComte, Pascalen
dc.contributor.authorHumphry-Baker, Robinen
dc.contributor.authorKessler, Florianen
dc.contributor.authorYi, Chenyien
dc.contributor.authorNazeeruddin, Md. Khajaen
dc.contributor.authorGrätzel, Michaelen
dc.date.accessioned2016-02-25T13:17:14Zen
dc.date.available2016-02-25T13:17:14Zen
dc.date.issued2013-01-15en
dc.identifier.citationChandiran AK, Comte P, Humphry-Baker R, Kessler F, Yi C, et al. (2013) Evaluating the Critical Thickness of TiO 2 Layer on Insulating Mesoporous Templates for Efficient Current Collection in Dye-Sensitized Solar Cells . Advanced Functional Materials 23: 2775–2781. Available: http://dx.doi.org/10.1002/adfm.201202956.en
dc.identifier.issn1616-301Xen
dc.identifier.doi10.1002/adfm.201202956en
dc.identifier.urihttp://hdl.handle.net/10754/598241en
dc.description.abstractIn this paper, a way of utilizing thin and conformal overlayer of titanium dioxide on an insulating mesoporous template as a photoanode for dye-sensitized solar cells is presented. Different thicknesses of TiO2 ranging from 1 to 15 nm are deposited on the surface of the template by atomic layer deposition. This systematic study helps unraveling the minimum critical thickness of the TiO2 overlayer required to transport the photogenerated electrons efficiently. A merely 6-nm-thick TiO2 film on a 3-μm mesoporous insulating substrate is shown to transport 8 mA/cm 2 of photocurrent density along with ≈900 mV of open-circuit potential when using our standard donor-π-acceptor sensitizer and Co(bipyridine) redox mediator. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en
dc.description.sponsorshipThe authors acknowledge the financial contribution from EU FP7 project "ORION" grant agreement number NMP-229036. This publication is partially based on work supported by the Center for Advanced Molecular Photovoltaics (Award No KUS-C1-015-21), made by King Abdullah University of Science and Technology (KAUST). A.K.C. is grateful for financial support from the Balzan foundation as part of the 2009 Balzan Prize award to M.G. M.K.N. thanks the World Class University program, Photovoltaic Materials, Department of Material Chemistry, Korea University, Chungnam, 339-700, Korea, funded by the Ministry of Education, Science and Technology through the National Research Foundation of Korea (No. R31-2008-000-10035-0).en
dc.publisherWiley-Blackwellen
dc.subjectatomic layer depositionen
dc.subjectcobalt complexen
dc.subjectdye-sensitized solar cellen
dc.subjecttemplatesen
dc.subjecttitanium dioxideen
dc.titleEvaluating the Critical Thickness of TiO 2 Layer on Insulating Mesoporous Templates for Efficient Current Collection in Dye-Sensitized Solar Cellsen
dc.typeArticleen
dc.identifier.journalAdvanced Functional Materialsen
dc.contributor.institutionEcole Polytechnique Federale de Lausanne, Lausanne, Switzerlanden
dc.contributor.institutionSiemens AG, Munich, Germanyen
kaust.grant.numberKUS-C1-015-21en
kaust.grant.fundedcenterCenter for Advanced Molecular Photovoltaics (CAMP)en
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