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Home  >  Volume 27 (July 2014)

43. Comparative Study on Zobo and Tomato Dye on the Fabrication of Dye Sensitized Solar Cell Using ITO/TiO2/ZnO/Dye Sensitized by Ezeh M.I.Volume27, (July, 2014), pp 347 – 354
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Abstract

A photoanode of dye-sensitized solar cells based on a ZnO/TiO2 composite film was fabricated on a transparent conductive glass substrate using the spray pyrolysis and screen printing technique respectively. The resulting substrate is sensitized with the zobo and the tomato dye separately to form a dye sensitized solar cell.

The solar cell sensitized with the zobo dye produced an open voltage of 0.389 V, at a fill factor of -33.8765, which further gave a short circuit current density of -0.000236 and the efficiency calculated to be 0.0031.While the solar cell sensitized with the tomato dye produced an open voltage of 0.334 V, at a fill factor of -44.4027, which further gave a short circuit current density of -0.000236 and the efficiency calculated to be 0.0035. Therefore, cell produced with tomatoes dye is more efficient and cheaper to fabricate due to an improved annealing time.

Keywords:Dye sensitized solar cell; zobo dye; tomato dye; efficiency; comparative study

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