Dye-Sensitized Solar Cells Using Surface-Stabilized Nanocrystalline-TiO2 Electrodes Coated by Epoxy Polymer

Kazuki Tsujimoto, Seigo Ito, Shinichi Yusa, Takayuki Imamura

Abstract


In order to improve the thermal durability of dye-sensitized solar cells, epoxy polymer was coated on dyed-TiO2 electrode to prevent dye desorption under heating condition over 80 °C.  The covering effect on epoxy polymer was confirmed using impedance spectroscopy.  Using the epoxy polymer coating with Z907 Ru dye and ionic liquid electrolyte, the DSC photovoltaic durability was improved up to 90 °C, which is the highest temperature published for the DSC durability test.  Although the epoxy polymer suppressed the DSC photovoltaic effect, it enhance the thermal durability; DSC coated epoxy polymer on the dyed-TiO2 electrode was able to prolong the efficiency over 90% of the initial value at 90 °C for 550 hours.

Key words: Dye-sensitized solar cells; Epoxy polymer; Ionic liquid electrolyte; Thermal durability; Heat test


Keywords


Key words: Dye-sensitized solar cells; Epoxy polymer; Ionic liquid electrolyte; Thermal durability; Heat test

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References


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DOI: http://dx.doi.org/10.3968/j.est.1923847920110202.125

DOI (PDF): http://dx.doi.org/10.3968/g2091

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