A Novel Covalently Linked Zn Phthalocyanine-Zn Porphyrin Dyad for Dye-sensitized Solar Cells |
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| Authors: | Satoshi Yamamoto Shogo Mori Pawel Wagner Attila J. Mozer Mutsumi Kimura |
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| Affiliation: | 1. Division of Chemistry and Materials, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567 (Japan), Tel.: (+81) 268-21-5499, Fax: (+81) 268-21-5499;2. ARC Centre of Excellence for Electromaterials Science and Intelligent Polymer Research Institute, University of Wollongong, Innovation Campus, Squires Way, Fairy Meadow, New South Wales 2519 (Australia) |
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| Abstract: | A novel Zn phthalocyanine-Zn porphyrin (ZnPc-ZnPor) dyad ( 1 ), in which a zinc porphyrin moiety is linked covalently with an ABAB-type zinc phthalocyanine moiety, has been designed and synthesized. The ZnPc-ZnPor dyad 1 can absorb over a wide spectral range of visible light. The fluorescence spectrum of dyad 1 revealed an intramolecular efficient energy transfer from Zn porphyrin to Zn phthalocyanine. When dyad 1 was used as a light-harvesting sensitizer for dye-sensitized solar cells, the cell sensitized by dyad 1 provided a power conversion efficiency of 2.7 % under simulated air mass 1.5 global sunlight. The incident photon-to-current efficiency spectrum of the dyad 1 cell suggested the contribution of both components in dyad 1 for the current generation. |
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| Keywords: | dyes/pigments dye-sensitized solar cells energy transfer phthalocyanines porphyrin |
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