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Sol-Gel Derived Carbon Electrode for Dye-Sensitized Solar Cells

Author Affiliations

  • 1Department of Physics and Industrial Physics, Madonna University, Elele, NIGERIA
  • 2 Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, NIGERIA

Res.J.chem.sci., Volume 1, Issue (8), Pages 76-79, November,18 (2011)

Abstract

This work is based on the procedure for obtaining carbon paste electrode through the sol-gel technique and its application as counter electrode for dye-sensitized solar cells. Through the hydrolysis of the precursor (tin II chloride), followed by polycondensation reaction, we were able to obtain our colloidal suspension. Our carbon paste comprises an equal amount of well blended powdered activated carbon (PAC) and natural graphite powder (NGP) mixed with the polymeric sol. The carbon paste was squeezed onto a fluorine doped tin oxide (FTO) glass substrate. We were able to reduce the sheet resistance of the carbon electrode from 212.1 ohms/square to 15.4 ohms/square. A dye-sensitized solar cell (DSSC) fabricated with the carbon paste electrode and sensitized with chlorin dye showed a photoelectric energy conversion efficiency of 1.01%

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