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Keywords:

  • photogalvanic cell;
  • eosin;
  • fructose;
  • fill factor;
  • conversion efficiency

Abstract

A photosensitizer-Eosin and a reductant-Fructose have been used in the photogalvanic cell for photochemical conversion of solar energy into electrical energy. The generated photopotential and photocurrent are 848.0 mV and 240.0 μA, respectively. The maximum power of the cell is 203.52 μW whereas the observed power at power point is 87.52 μW. The conversion efficiency is 0.84% and the fill factor is 0.3404 at the power point of the photogalvanic cell. The photogalvanic cell so developed can work for 55.0 min in dark if it is irradiated for 85.0 min. i.e. the storage capacity of photogalvanic cell is 64.70%. The effects of different parameters on the electrical output of the photogalvanic cell have been observed. A mechanism has also been proposed for the photogeneration of electrical energy. © 2010 American Institute of Chemical Engineers Environ Prog, 2011.