Improved performance of a dye-sensitized solar cell using a TiO2/ZnO/Eosin Y electrode |
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Authors: | Seok-Soon Kim Jun-Ho Yum Yung-Eun Sung |
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Affiliation: | Department of Materials Science and Engineering, Kwangju Institute of Science and Technology(K-JIST), Kwangju 500-712, South Korea |
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Abstract: | TiO2/ZnO/Eosin Y structure films were prepared by a one-step cathodic electrodeposition method and used as a photoanode in a dye-sensitized solar cell (DSSC). Using this TiO2/ZnO/Eosin Y electrode in DSSC, the degradation of the cell with time was reduced and ISC, VOC and fill factor values were increased. The use of a thin ZnO layer, permitted the formation of an energy barrier at the electrode/electrolyte interface, thus reducing recombination rate and improving cell performance. In addition, the adsorbed dye molecules prepared by one-step cathodic electrodeposition with ZnO were very stable compared with that prepared by conventional immersing method, as evidenced by UV/vis absorption spectroscopy measurements. |
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Keywords: | Dye-sensitized solar cell One-step cathodic electrodeposition ZnO layer Recombination rate Energy barrier |
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