An Increase in Energy Conversion Efficiency by Decreasing Cobalt Redox Electrolyte Diffusion Resistance in Dye-sensitized Solar Cells

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  • Takayuki Uchiyama
    Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University
  • Takurou N Murakami
    Research Institute for Photovoltaic Technology, National Institute of Advanced Industrial Science and Technology
  • Nobuhiro Yoshii
    Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University
  • Yu Uemura
    Research Institute for Photovoltaic Technology, National Institute of Advanced Industrial Science and Technology
  • Nagatoshi Koumura
    Research Institute for Photovoltaic Technology, National Institute of Advanced Industrial Science and Technology
  • Naruhiko Masaki
    Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University
  • Mutsumi Kimura
    Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University
  • Shogo Mori
    Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University

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Abstract

<jats:title>Abstract</jats:title> <jats:p>Cobalt complex redox electrolytes are known to possess high electrolyte diffusion resistances in dye-sensitized solar cells. High resistance was observed not only in the TiO2 pores but also in the bulk of the electrolyte. Therefore, the distance between a dyed TiO2 electrode and a Pt counter electrode was decreased, resulting in increases in the fill factor and short-circuit current. With a carbazole dye, MK-34, an efficiency of 9.3% was obtained under one-sun conditions.</jats:p>

Journal

  • Chemistry Letters

    Chemistry Letters 42 (4), 453-454, 2013-04

    Oxford University Press (OUP)

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