Photosensitization of nanocrystalline TiO2 films by a polymer with two carboxylic groups, poly (3-thiophenemalonic acid) |
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Authors: | GKR Senadeera T Kitamura Y Wada S Yanagida |
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Affiliation: | aInstitute of Fundamental Studies, Hantane Road, Kandy, Sri Lanka;bMaterials and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan;cCenter for Advance Science and Innovation, Osaka University, Osaka, Japan |
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Abstract: | Photovoltaic devices were assembled using a conducting polymer; poly (3-thiophenemalonic acid) sensitized TiO2 electrodes and an electrolyte containing I3−/I− redox couple. This cell exhibited a short-circuit photocurrent (Jsc) of 6.65 mA cm−2, an open circuit voltage (Voc) of 355 mV and an efficiency of 1.5% under the illumination of 100 mW cm−2 (AM 1.5). Addition of an ionic liquid, 1-methyl 3-n-hexylimidazolium iodide, into the electrolyte led to an improvement in the cell performances, achieving an overall efficiency of 1.8% under the same illumination. The average cell characteristics of the later devices are , with a fill factor of 0.65. |
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Keywords: | Dye sensitization Photoelectrochemical cells Polythiophene derivatives TiO2 |
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