Advanced Materials

High-Efficiency and Stable Mesoscopic Dye-Sensitized Solar Cells Based on a High Molar Extinction Coefficient Ruthenium Sensitizer and Nonvolatile Electrolyte

Authors

  • D. Kuang,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • C. Klein,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • S. Ito,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • J.-E. Moser,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • R. Humphry-Baker,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • N. Evans,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • F. Duriaux,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • C. Grätzel,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • S. M. Zakeeruddin,

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • M. Grätzel

    1. Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland)
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  • The present work is supported by The Swiss Science Foundation and the Swiss Commission of Technology and Innovation (CTI) under contract number 7019.1 NMS-NM. We thank Dr. Q. Wang for helpful discussions, P. Comte for the preparation of TiO2 paste, and Dr. T. Koyanagi (CCIC, Japan) for a free sample of the 400 nm sized light-scattering particles. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

Mesoscopic dye-sensitized solar cells (DSCs) with efficiency greater than 10.5 % are reported. Using a newly designed sensitizer (K77, see figure) combined with a newly formulated nonvolatile organic-solvent-based electrolyte (Z646), highly efficient DSCs (up to 9.5 %) that exhibit unprecedented long-term stability (1000 h) under both light-soaking and thermal stress are demonstrated.

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