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Relation of Ru(II) dye desorption from TiO2 film during illumination with photocurrent decrease of dye-sensitized solar cells by Hee-Sun Uam; Young-Sam Jung; Yongseok Jun; Kang-Jin Kim is a Materials Science article available to read on EtoBox.

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The initial decrease in the short-circuit photocurrent density (J sc ) of a Ru(II)-bipyridine dye-sensitized solar cell (DSSC) during illumination is correlated with the decrease in the amount of remaining dye adsorbed on the TiO 2 film monitored by UV-vis absorption spectroscopy. The analyses reveal that the illumination causes the N719 dye molecules to desorb from the TiO 2 film into the electrolytic solution. The amount of dye remaining adsorbed on the TiO 2 film is influenced by the viscosity and donor number of the electrolytic solution. More dye molecules remain adsorbed on the TiO 2 film in the solution of 3methoxypropionitrile than in the less viscous solution of acetonitrile. The addition of water and Triton X-100 to the 3-methoxypropionitrile solution results in the enhancement of the dye desorption, partly due to the increase in the donor number.

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Author

Hee-Sun Uam; Young-Sam Jung; Yongseok Jun; Kang-Jin Kim

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1010-6030)

Published

2010

Language

EN

Field

Materials Science (Physical Sciences)