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Updated: Jun 16, 2026

Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells
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Solid-state dye-sensitized solar cells using polymerized ionic liquid electrolyte with platinum-free counter

Ryuji Kawano1, Toru Katakabe, Hironobu Shimosawa

  • 1Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan. rjkawano@iis.u-tokyo.ac.jp

Physical Chemistry Chemical Physics : PCCP
|February 11, 2010
PubMed
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This study introduces a solid-state dye-sensitized solar cell (ssDSSC) using a polymerized ionic liquid electrolyte and a platinum-free counter electrode. This approach achieves a 3.7% photon-to-current conversion efficiency, offering a cost-effective alternative.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Renewable Energy

Background:

  • Solid-state dye-sensitized solar cells (ssDSSCs) offer potential for low-cost photovoltaic applications.
  • Traditional ssDSSCs often rely on expensive platinum-based counter electrodes and liquid electrolytes, posing stability and cost challenges.
  • Developing efficient and stable solid-state electrolytes and alternative counter electrodes is crucial for advancing ssDSSC technology.

Purpose of the Study:

  • To develop a cost-effective and stable solid-state electrolyte for ssDSSCs.
  • To investigate the use of platinum-free counter electrodes in ssDSSCs.
  • To evaluate the overall performance and efficiency of the fabricated ssDSSCs.

Main Methods:

  • Fabrication of a thin polymerized ionic liquid electrolyte layer on nanocrystalline TiO(2) to minimize cell resistance.

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  • Utilization of an electron conductive polymer (PEDOT/PSS) or single-wall carbon nanotube gel as a platinum-free counter electrode.
  • Characterization of the ssDSSC performance, including photon-to-current conversion efficiency.

    • Main Results:

    • A thin polymer electrolyte layer was successfully prepared on nanocrystalline TiO(2), leading to reduced cell resistance.
    • Platinum-free counter electrodes, specifically PEDOT/PSS or single-wall carbon nanotube gel, were employed as cost-effective alternatives.
    • The fabricated solid-state DSSCs achieved an overall photon-to-current conversion efficiency of 3.7%.

    Conclusions:

    • The use of a polymerized ionic liquid electrolyte and a platinum-free counter electrode is a viable strategy for developing efficient solid-state DSSCs.
    • Reducing cell resistance through thin electrolyte layers and employing inexpensive counter electrodes can enhance ssDSSC performance.
    • This research contributes to the development of more economical and stable solar cell technologies.