Low-Temperature Crystalline Titanium Dioxide by Atomic Layer Deposition for Dye-Sensitized Solar Cells

Handle URI:
http://hdl.handle.net/10754/598741
Title:
Low-Temperature Crystalline Titanium Dioxide by Atomic Layer Deposition for Dye-Sensitized Solar Cells
Authors:
Chandiran, Aravind Kumar; Yella, Aswani; Stefik, Morgan; Heiniger, Leo-Philipp; Comte, Pascal; Nazeeruddin, Mohammad. K.; Grätzel, Michael
Abstract:
Low-temperature processing of dye-sensitized solar cells (DSCs) is crucial to enable commercialization with low-cost, plastic substrates. Prior studies have focused on mechanical compression of premade particles on plastic or glass substrates; however, this did not yield sufficient interconnections for good carrier transport. Furthermore, such compression can lead to more heterogeneous porosity. To circumvent these problems, we have developed a low-temperature processing route for photoanodes where crystalline TiO2 is deposited onto well-defined, mesoporous templates. The TiO2 is grown by atomic layer deposition (ALD), and the crystalline films are achieved at a growth temperature of 200 C. The ALD TiO2 thickness was systematically studied in terms of charge transport and performance to lead to optimized photovoltaic performance. We found that a 15 nm TiO2 overlayer on an 8 μm thick SiO2 film leads to a high power conversion efficiency of 7.1% with the state-of-the-art zinc porphyrin sensitizer and cobalt bipyridine redox mediator. © 2013 American Chemical Society.
Citation:
Chandiran AK, Yella A, Stefik M, Heiniger L-P, Comte P, et al. (2013) Low-Temperature Crystalline Titanium Dioxide by Atomic Layer Deposition for Dye-Sensitized Solar Cells. ACS Applied Materials & Interfaces 5: 3487–3493. Available: http://dx.doi.org/10.1021/am400866s.
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
KAUST Grant Number:
KUS-C1-015- 21
Issue Date:
24-Apr-2013
DOI:
10.1021/am400866s
PubMed ID:
23506374
Type:
Article
ISSN:
1944-8244; 1944-8252
Sponsors:
The authors acknowledge the financial contribution from EU FP7 project "ORION" grant agreement number NMP-229036. We are grateful for the financial support from the Balzan foundation as a part of the 2009 Balzan Prize awarded to Michael Graetzel. 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). MS is grateful for financial support from the Swiss Commission for Technology and Innovation (CTI) (Award No 13369.1 PFFLR-NM).
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Full metadata record

DC FieldValue Language
dc.contributor.authorChandiran, Aravind Kumaren
dc.contributor.authorYella, Aswanien
dc.contributor.authorStefik, Morganen
dc.contributor.authorHeiniger, Leo-Philippen
dc.contributor.authorComte, Pascalen
dc.contributor.authorNazeeruddin, Mohammad. K.en
dc.contributor.authorGrätzel, Michaelen
dc.date.accessioned2016-02-25T13:40:17Zen
dc.date.available2016-02-25T13:40:17Zen
dc.date.issued2013-04-24en
dc.identifier.citationChandiran AK, Yella A, Stefik M, Heiniger L-P, Comte P, et al. (2013) Low-Temperature Crystalline Titanium Dioxide by Atomic Layer Deposition for Dye-Sensitized Solar Cells. ACS Applied Materials & Interfaces 5: 3487–3493. Available: http://dx.doi.org/10.1021/am400866s.en
dc.identifier.issn1944-8244en
dc.identifier.issn1944-8252en
dc.identifier.pmid23506374en
dc.identifier.doi10.1021/am400866sen
dc.identifier.urihttp://hdl.handle.net/10754/598741en
dc.description.abstractLow-temperature processing of dye-sensitized solar cells (DSCs) is crucial to enable commercialization with low-cost, plastic substrates. Prior studies have focused on mechanical compression of premade particles on plastic or glass substrates; however, this did not yield sufficient interconnections for good carrier transport. Furthermore, such compression can lead to more heterogeneous porosity. To circumvent these problems, we have developed a low-temperature processing route for photoanodes where crystalline TiO2 is deposited onto well-defined, mesoporous templates. The TiO2 is grown by atomic layer deposition (ALD), and the crystalline films are achieved at a growth temperature of 200 C. The ALD TiO2 thickness was systematically studied in terms of charge transport and performance to lead to optimized photovoltaic performance. We found that a 15 nm TiO2 overlayer on an 8 μm thick SiO2 film leads to a high power conversion efficiency of 7.1% with the state-of-the-art zinc porphyrin sensitizer and cobalt bipyridine redox mediator. © 2013 American Chemical Society.en
dc.description.sponsorshipThe authors acknowledge the financial contribution from EU FP7 project "ORION" grant agreement number NMP-229036. We are grateful for the financial support from the Balzan foundation as a part of the 2009 Balzan Prize awarded to Michael Graetzel. 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). MS is grateful for financial support from the Swiss Commission for Technology and Innovation (CTI) (Award No 13369.1 PFFLR-NM).en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectatomic layer depositionen
dc.subjectcobalt complexen
dc.subjectdye-sensitized solar cellsen
dc.subjectflexible solar cellen
dc.subjectlow-temperature titanium dioxideen
dc.subjecttemplatesen
dc.titleLow-Temperature Crystalline Titanium Dioxide by Atomic Layer Deposition for Dye-Sensitized Solar Cellsen
dc.typeArticleen
dc.identifier.journalACS Applied Materials & Interfacesen
dc.contributor.institutionEcole Polytechnique Federale de Lausanne, Lausanne, Switzerlanden
kaust.grant.numberKUS-C1-015- 21en
kaust.grant.fundedcenterCenter for Advanced Molecular Photovoltaics (CAMP)en

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