Incorporating Multiple Energy Relay Dyes in Liquid Dye-Sensitized Solar Cells

Authors

  • Dr. Jun-Ho Yum,

    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, Fax: (+41) 21-693-4111
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    • These authors contributed equally to this work.

  • Dr. Brian E. Hardin,

    1. Department of Materials Science and Engineering, Stanford University, California 94305 (USA)
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    • These authors contributed equally to this work.

  • Eric T. Hoke,

    1. Department of Applied Physics, Stanford University, California 94305 (USA)
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  • Dr. Etienne Baranoff,

    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, Fax: (+41) 21-693-4111
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  • Dr. Shaik M. Zakeeruddin,

    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, Fax: (+41) 21-693-4111
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  • Dr. Mohammad K. Nazeeruddin,

    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, Fax: (+41) 21-693-4111
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  • Prof. Tomas Torres,

    1. Departamento de Química Orgánica (C-I), Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
    2. IMDEA Nanoscience, Facultad de Ciencias, Cantoblanco, 28049 Madrid, Spain
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  • Prof. Michael D. McGehee,

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

    Corresponding author
    1. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, Fax: (+41) 21-693-4111
    • Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland, Fax: (+41) 21-693-4111
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Abstract

Panchromatic response is essential to increase the light-harvesting efficiency in solar conversion systems. Herein we show increased light harvesting from using multiple energy relay dyes inside dye-sensitized solar cells. Additional photoresponse from 400–590 nm matching the optical window of the zinc phthalocyanine sensitizer was observed due to Förster resonance energy transfer (FRET) from the two energy relay dyes to the sensitizing dye. The complementary absorption spectra of the energy relay dyes and high excitation transfer efficiencies result in a 35 % increase in photovoltaic performance.

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