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Panchromatic Response in Solid-State Dye-Sensitized Solar Cells Containing Phosphorescent Energy Relay Dyes

Authors

  • Jun-Ho Yum Dr.,

    1. LPI, Institut des Sciences et Ingénierie Chimiques, Faculté des Sciences de Base, École Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland), Fax: (+41) 21-693-4111
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  • Brian E. Hardin,

    1. Department of Material Science and Engineering, Stanford University, Stanford, California 94305-4045 (USA)
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  • Soo-Jin Moon,

    1. LPI, Institut des Sciences et Ingénierie Chimiques, Faculté des Sciences de Base, École Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland), Fax: (+41) 21-693-4111
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  • Etienne Baranoff Dr.,

    1. LPI, Institut des Sciences et Ingénierie Chimiques, Faculté des Sciences de Base, École Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland), Fax: (+41) 21-693-4111
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  • Frank Nüesch Dr.,

    1. Laboratory for Functional Polymers, Empa, Swiss Federal Laboratories for Materials Testing and Research, Überlandstrasse 129, 8600 Dübendorf (Switzerland)
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  • Michael D. McGehee Prof.,

    1. Department of Material Science and Engineering, Stanford University, Stanford, California 94305-4045 (USA)
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  • Michael Grätzel Prof.,

    1. LPI, Institut des Sciences et Ingénierie Chimiques, Faculté des Sciences de Base, École Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland), Fax: (+41) 21-693-4111
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  • Mohammad K. Nazeeruddin Prof.

    1. LPI, Institut des Sciences et Ingénierie Chimiques, Faculté des Sciences de Base, École Polytechnique Fédérale de Lausanne, 1015 Lausanne (Switzerland), Fax: (+41) 21-693-4111
    2. WCU, Department of Chemistry, Korea University, 208 Seochang, Chochiwon, Chung-nam 339-700 (Korea)
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  • We acknowledge financial support of this work by King Abdullah University of Science and Technology and the Center for Advanced Molecular Photovoltaics (CAMP). We thank I-Kang Ding and Eric Hoke for assistance in photoluminescence analysis of numerous energy-relay dyes. We also thank Pascal Compte and Dr. Paul Liska for their kind assistance.

Abstract

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Running relay: Incorporating an energy-relay dye (ERD) into the hole transporter of a dye-sensitized solar cell increased power-conversion efficiency by 29 % by extending light harvesting into the blue region. In the operating mechanism (see picture), absorption of red photons by the sensitizer transfers an electron into TiO2 and a hole into the electrolyte. Blue photons absorbed by the ERD are transferred by FRET to the sensitizer.

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