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    Block copolymer directed synthesis of mesoporous TiO 2 for dye-sensitized solar cells

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    Type
    Article
    Authors
    Nedelcu, Mihaela
    Lee, Jinwoo
    Crossland, Edward J. W.
    Warren, Scott C.
    Orilall, M. Christopher
    Guldin, Stefan
    Hüttner, Sven
    Ducati, Catarina
    Eder, Dominik
    Wiesner, Ulrich
    Steiner, Ullrich
    Snaith, Henry J.
    Date
    2009
    Permanent link to this record
    http://hdl.handle.net/10754/597683
    
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    Abstract
    The morphology of TiO2 plays an important role in the operation of solid-state dye-sensitized solar cells. By using polyisoprene-block- ethyleneoxide (PI-b-PEO) copolymers as structure directing agents for a sol-gel based synthesis of mesoporous TiO2, we demonstrate a strategy for the detailed control of the semiconductor morphology on the 10 nm length scale. The careful adjustment of polymer molecular weight and titania precursor content is used to systematically vary the material structure and its influence upon solar cell performance is investigated. Furthermore, the use of a partially sp 2 hybridized structure directing polymer enables the crystallization of porous TiO2 networks at high temperatures without pore collapse, improving its performance in solid-state dye-sensitized solar cells. © 2009 The Royal Society of Chemistry.
    Citation
    Nedelcu M, Lee J, Crossland EJW, Warren SC, Orilall MC, et al. (2009) Block copolymer directed synthesis of mesoporous TiO 2 for dye-sensitized solar cells . Soft Matter 5: 134–139. Available: http://dx.doi.org/10.1039/b815166k.
    Sponsors
    M. N., S. H., and U. S. acknowledge financial support from the European network "PolyFilm" under RTN-6. This work was in part funded by EPSRC, NSF (DMR-0404195) and KAUST. The sabbatical leave of U. W. was supported by the Leverhulme Trust and EPSRC. C. D. acknowledges the Royal Society for Funding. We thank Richard Friend for support.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Soft Matter
    DOI
    10.1039/b815166k
    ae974a485f413a2113503eed53cd6c53
    10.1039/b815166k
    Scopus Count
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