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题名: Fabrication and Photovoltaic Characterization of Bio-Sensitized Solar Cells Using Myoglobin-Based Sensitizers
作者: Chang, Chih-Wei;Chang, Chin-Hao;Lu, Hsueh-Pei;Wu, Tung-Kung;Diau, Eric Wei-Guang
贡献者: 化學系
日期: 2009-03
上传时间: 2013-02-05T02:21:19Z
出版者: American Scientific Publishers
摘要: Myoglobin (Mb), reconstituted zinc protoporphyrin-apomyoglobin (ZnMb), and eosin-modified ZnMb (EoZnMb) were used as photosensitizers to functionalize TiO2 nanocrystalline films for biosensitized solar-cell (BSSC) applications. For the Mb-sensitized SC, the poor cell performance was due to a reduction Fe(III) → Fe(II) that produces a photocurrent density of the device smaller than its unsensitized counterpart. The efficiencies of power conversion of both ZnMb and EoZnMb–sensitized SC were enhanced about ten times due to superior charge separation between TiO2 and the protein, and due to smaller current leakage between TiO2 and the electrolyte. The cell performances of the BSSC devices are discussed in terms of an equivalent-circuit model.
關聯: Journal of Nanoscience and Nanotechnology, 9(3): 1688-1695
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