Abstract
A porphyrin-linked fullerene derivative, which included COOH groups in its fullerene unit, Por-C 60(COOH) was synthesized in order to investigate the possibility of promoting the photosensitization of TiO 2. Por-C 60(COOH) molecules produced higher photocurrent per molecule than tetrakis(4-carboxyphenyl)-porphyrin molecules. A dye-sensitized solar cell using Por-C 60(COOH), in which a C 60 unit was introduced between the porphyrin unit and TiO 2, yielded an improvement in energy conversion for light collection.
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