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Influence of Local Dye on the Optical band-gap of Titanium Dioxide and its performance as a DSSC Material

Author Affiliations

  • 1Department of Physics, Federal College of Education, Technical, Umunze, Anambra, NIGERIA
  • 2Faculty of Science, Madonna University, Elele, Rivers State, NIGERIA
  • 3Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, NIGERIA

Res. J. Physical Sci., Volume 1, Issue (10), Pages 6-10, November,4 (2013)

Abstract

Titanium dioxide has been extensively studied in recent decades for its important applications including pigments, protective coatings and thin film optical devices such as photovoltaics. Dye sensitized solar cell is a photoelectrochemical cell which utilizes the property of nanocrystalline wide band-gap metal oxide semiconductor porous electrode. The search for a method to narrow the optical band-gap of TiO2 plays a key role for enhancing its photocatalytic applications. The optical band-gap of a nanocrystalline titanium dioxide sensitized with anthocyanin local dye is determined in this work. Anthocyanin dye is a natural dye extracted from hibiscus sabdariffa which is an edible plant called zobo by Nigerians. A comparative study of the photovoltaic performance of anthocyanin-doped TiO2 is also shown in this work.

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