Chemistry Letters, Vol.36, No.7, 892-893, 2007
A dye-sensitized solar cell using a red ruthenium(II) complex with 9,9-bis(4-methoxyphenyl)-4,5-diazafluorene
A ruthenium(II) complex containing a 4,5-diazafluorene moiety as a polypyridyl ligand was synthesized and its properties were investigated. A solar cell using the complex as a dye sensitizer showed a solar energy-to-electricity conversion efficiency of eta = 7.3% under irradiation with AM 1.5 solar light; the value was slightly higher than that of red dye N719 (eta = 7.0%).