Abstract Views :210 |
PDF Views:0
Authors
Affiliations
1 Department of Physics, Avinashilingam Deemed University for Women, Coimbatore - 641043, Tamil Nadu, IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 4 (2011), Pagination: 621-625
Abstract
In this work, the effect of three natural photosensitizers (dyes of beetischolar_main, grapes and pomegranate) over TiO2 thin film are investigated. Natural dyes were extracted from beetischolar_main, grapes and pomegranate and mixed with ethanol and coated over TiO2 thin films prepared by Spray pyrolysis method from titanium diisopropoxide precursors at 450oC. and kept in each dye extract for 15 hours. The optical absorbance and transmittance of dye sensitized TiO2 thin films determined by UV-visible spectroscopic method, indicated the presence of increased light transmission in the visible spectrum region. The energy band gap (Eg) for TiO2 thin films sensitized with dyes of beetischolar_main, grapes and pomegranate were found to be 3.18eV, 3.12 eV and 3.14 eV respectively. Dye-Sensitized Solar Cells constructed with natural pigments from fruits and vegetables will enhance light harvesting.
Keywords
Natural Photosensitizers, Tio2 Films, Spray Pyrolysis, Dye Sensitized Solar Cells.
