Dye-sensitized solar cells based on quaternary phosphonium ionic liquids as electrolytes

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作者
Kunugi, Yoshihito [1 ]
Hayakawa, Hideyuki [1 ]
Tsunashima, Katsuhiko [2 ]
Sugiya, Masashi [2 ]
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[1] Department of Applied Chemistry, Faculty of Engineering, Tokai University, 1117 Kitakaname, Hiratsuka 259-1292, Japan
[2] Organic Chemicals RandD Department, Nippon Chemical Industrial Co., Ltd., 9-11-1 Kameido, Koto-ku, Tokyo 136-8515, Japan
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Dye-sensitized solar cells using quaternary phosphonium ionic liquids as their electrolytes have been successfully fabricated. Of these; the best device performance was achieved by using triethyl(pentyl)phosphonium bis(trifluoromethyl-sulfonyl)amide; whose energy conversion efficiencies were determined to be 1.2% and 3.8% under full (AM 1.5; 100 mW cm-2) and low intensity (7 mW cm2) sunlight illumination; respectively; Interestingly; the energy conversion efficiencies for the quaternary phosphonium ionic liquid electrolytes are higher than those for the corresponding quaternary ammonium ionic liquids;
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页码:2473 / 2475
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