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KMID : 1059519900340060600
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Journal of the Korean Chemical Society
1990 Volume.34 No. 6 p.600 ~ p.605
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Effect of Urea on the Rose Bengal Sensitized Photocurrent
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Yon Kil-Joong
Kang Sung-Chul
Kim Kang-Jin
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Abstract
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Electron injection from excited rose bengal into the conduction band of a thin film of SnO2, semiconductor was investigated in an electrochemical cell, ITO/SnO2/rose bengal, NaClO4/Pt. It was observed that urea enhanced the supersensitized photocurrent, followed by the reduction in the photocurrent after a shallow maximum. Spectroscopic analyses of the dye solution containing urea revealed that dye aggregation appeared to be involved in the increased photocurrent, although the concentration of the dye was continuously decreased dye to photochemical reactions.
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KEYWORD
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