2007/12/01 by Yoshihito Kunugi, Hideyuki Hayakawa, Katsuhiko Tsunashima +1
paper · doi:10.1246/bcsj.80.2473
crossref issued 2007/12/01 · crossref published 2007/12/01 · crossref published-online 2007/12/13 · crossref created 2007/12/13 · crossref published-print 2007/12/15 · crossref deposited 2024/01/20 · crossref indexed 2026/07/28
Abstract 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(trifluoromethylsulfonyl)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 cm−2) 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.