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- W2187380039 abstract "An improved separation technique employing medium pressure liquid chromatography is used to purify betanin from beet root for use as a sensitizer in a TiO2- based dye-sensitized solar cell. The use of a blocking layer and treatment by TiCl4 were explored in order to optimize the performance of the solar cell, resulting in energy conversion efficiencies as high as 2.7%, the highest yet recorded for a natural dye sensitizer. The fluorescence spectrum of betanin in aqueous solution is reported as a function of added colloidal TiO2, demonstrating efficient electron injection. Quenching of betanin‟s fluorescence by TiO2 permits the observation of its resonance Raman spectrum, reported here for the first time and discussed in light of recent theoretical work on the electronic structure of betanin. Solar cells sensitized by purified betanin were subjected to stability tests and methods to extend the lifetime of these solar cells are proposed." @default.
- W2187380039 created "2016-06-24" @default.
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- W2187380039 date "2010-01-01" @default.
- W2187380039 modified "2023-09-27" @default.
- W2187380039 title "IMPROVED EFFICIENCY OF BETANIN-BASED DYE-SENSITIZED SOLAR CELLS AND A METHOD OF MEASURING RAMAN SPECTROSCOPY OF BETANIN THROUGH QUENCHING OF FLUORESCENCE WITH TiO2 COLLOIDAL NANOPARTICLES" @default.
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