2011•ElectrochemistryOpen access

Methoxymethyl-Substituted Quaternary Phosphonium Ionic Liquids as Electrolytes for Dye-Sensitized Solar Cells

Yoshihito Kunugi, Naoki Hamada, Shun Kodama, Masashi Sugiya, Katsuhiko Tsunashima

Abstract

Dye-sensitized solar cells based on low-viscosity phosphonium ionic liquids having a methoxymethyl group, triethyl(methoxymethyl)phosphonium bis(trifluoromethylsulfonyl)amide and triethyl(methoxymethyl)phosphonium dicyanamide, as their electrolytes have been successfully fabricated. The photo-energy conversion efficiency was optimized up to 5.8 % under AM 1.5 full sunlight illumination.

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Key concepts: Phosphonium, Dicyanamide, Ionic liquid, Electrolyte, Chemistry, Inorganic chemistry, Hexafluorophosphate, Materials science