Solidifying liquid electrolytes with fluorine polymer and silica nanoparticles for quasi-solid dye-sensitized solar cells |
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Authors: | Peng Wang,Michael Grä tzel |
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Affiliation: | Laboratory for Photonics and Interfaces, Institute of Molecular and Biological Chemistry, Ecole Polytechnique Fédérale de Lausanne, CH 1015 Lausanne, Switzerland |
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Abstract: | Poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-HFP) and silica nanoparticles were employed to solidify 3-methoxypropionitrile based liquid electrolytes containing an ionic liquid, 1-methyl-3-propylimidazolium iodide, as iodide resource. These new quasi-solid-state electrolytes were successfully used for regenerative phtoelectrochemical cells that yielded about 6.7% efficiency under simulated full sunlight (air mass 1.5, 100 mW cm−2) in combination with an amphiphilic ruthenium polypyridyl photosensitizer. The as-fabricated device showed a good thermostability at 80 °C for 30 days, maintaining higher than 90% of its initial performance. |
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Keywords: | PVDF-HFP Ruthenium polypyridyl photosensitizer Dye-sensitized solar cells |
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