Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance

Handle URI:
http://hdl.handle.net/10754/599339
Title:
Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance
Authors:
Ding, I-Kang; Tétreault, Nicolas; Brillet, Jérémie; Hardin, Brian E.; Smith, Eva H.; Rosenthal, Samuel J.; Sauvage, Frédéric; Grätzel, Michael; McGehee, Michael D.
Abstract:
In this paper, the pore filling of spiro-OMeTAD (2,2′,7,7′- tetrakis-(N,N-di-p-methoxyphenylamine)9,9′-spirobtfIuorene) in mesoporous TiO2 films is quantified for the first time using XPS depth profiling and UV-Vis absorption spectroscopy. It is shown that spiro-OMeTAD can penetrate the entire depth of the film, and its concentration is constant throughout the film. We determine that in a 2.5-μm-thick film, the volume of the pores is 60-65% filled. The pores become less filled when thicker films are used. Such filling fraction is much higher than the solution concentration because the excess solution on top of the film can act as a reservoir during the spin coating process. Lastly, we demonstrate that by using a lower spin coating speed and higher spiro-OMeTAD solution concentration, we can increase the filling fraction and consequently the efficiency of the device. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA.
Citation:
Ding I-K, Tétreault N, Brillet J, Hardin BE, Smith EH, et al. (2009) Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance. Advanced Functional Materials 19: 2431–2436. Available: http://dx.doi.org/10.1002/adfm.200900541.
Publisher:
Wiley-Blackwell
Journal:
Advanced Functional Materials
KAUST Grant Number:
KUS-C1-015-21
Issue Date:
10-Aug-2009
DOI:
10.1002/adfm.200900541
Type:
Article
ISSN:
1616-301X; 1616-3028
Sponsors:
This publication was partially based on work supported the Center forAdvanced Molecular Photovoltaics (Award No KUS-C1-015-21), made byKing Abdullah University of Science and Technology (KAUST). It was alsopartially supported by the Office of Naval Research. I-K. Ding is supportedby a Chevron Stanford Graduate Fellowship. We thank Chuck Hitzman andDr. Michael Kelly for valuable discussions and experimental assistance withX-ray photoelectron spectroscopy and Dr. Brian O’Regan for giving us theidea of dissolving out spiro-OMeTAD from the pores. Jeremie Brilletreceived financial support from a Marie Curie Research Training Network,Hydrogen Project (MRTN-CT-2006-032474). Supporting Information isavailable online from Wiley InterScience or the author.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorDing, I-Kangen
dc.contributor.authorTétreault, Nicolasen
dc.contributor.authorBrillet, Jérémieen
dc.contributor.authorHardin, Brian E.en
dc.contributor.authorSmith, Eva H.en
dc.contributor.authorRosenthal, Samuel J.en
dc.contributor.authorSauvage, Frédéricen
dc.contributor.authorGrätzel, Michaelen
dc.contributor.authorMcGehee, Michael D.en
dc.date.accessioned2016-02-28T05:49:30Zen
dc.date.available2016-02-28T05:49:30Zen
dc.date.issued2009-08-10en
dc.identifier.citationDing I-K, Tétreault N, Brillet J, Hardin BE, Smith EH, et al. (2009) Pore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance. Advanced Functional Materials 19: 2431–2436. Available: http://dx.doi.org/10.1002/adfm.200900541.en
dc.identifier.issn1616-301Xen
dc.identifier.issn1616-3028en
dc.identifier.doi10.1002/adfm.200900541en
dc.identifier.urihttp://hdl.handle.net/10754/599339en
dc.description.abstractIn this paper, the pore filling of spiro-OMeTAD (2,2′,7,7′- tetrakis-(N,N-di-p-methoxyphenylamine)9,9′-spirobtfIuorene) in mesoporous TiO2 films is quantified for the first time using XPS depth profiling and UV-Vis absorption spectroscopy. It is shown that spiro-OMeTAD can penetrate the entire depth of the film, and its concentration is constant throughout the film. We determine that in a 2.5-μm-thick film, the volume of the pores is 60-65% filled. The pores become less filled when thicker films are used. Such filling fraction is much higher than the solution concentration because the excess solution on top of the film can act as a reservoir during the spin coating process. Lastly, we demonstrate that by using a lower spin coating speed and higher spiro-OMeTAD solution concentration, we can increase the filling fraction and consequently the efficiency of the device. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA.en
dc.description.sponsorshipThis publication was partially based on work supported the Center forAdvanced Molecular Photovoltaics (Award No KUS-C1-015-21), made byKing Abdullah University of Science and Technology (KAUST). It was alsopartially supported by the Office of Naval Research. I-K. Ding is supportedby a Chevron Stanford Graduate Fellowship. We thank Chuck Hitzman andDr. Michael Kelly for valuable discussions and experimental assistance withX-ray photoelectron spectroscopy and Dr. Brian O’Regan for giving us theidea of dissolving out spiro-OMeTAD from the pores. Jeremie Brilletreceived financial support from a Marie Curie Research Training Network,Hydrogen Project (MRTN-CT-2006-032474). Supporting Information isavailable online from Wiley InterScience or the author.en
dc.publisherWiley-Blackwellen
dc.titlePore-Filling of Spiro-OMeTAD in Solid-State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performanceen
dc.typeArticleen
dc.identifier.journalAdvanced Functional Materialsen
dc.contributor.institutionStanford University, Palo Alto, United Statesen
dc.contributor.institutionEcole Polytechnique Federale de Lausanne, Lausanne, Switzerlanden
kaust.grant.numberKUS-C1-015-21en
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