NOVELTY - A dye comprising quaternary ammonium containing bipyridyl ligand and bis(thiocyanato)ruthenium (I) is new.    USE - As a dye for photoelectric device (claimed) which is useful in solar cells.    ADVANTAGE - The dye for a photoelectric device exhibits improved photosensitivity and light absorbing characteristics, thereby making it possible to fabricate a highly efficient photoelectric device when the dye is included in the device. The dye shows improved energy conversion efficiency by incorporating different quaternary ammoniums into a bipyridyl ligand of the existing dye. The dye shows improved light absorption efficiency with high photosensitivity to sunlight. The cathode has a photoelectric conversion efficiency greater than (preferably 7.5%) that of a photoelectric device prepared in the same way but with a dye which is other than the dye comprising quatenary ammonium containing bipyridyl ligand and bis(thiocyanato)ruthenium. The dye having non-identical tetraalkyl ammonium groups imparts sufficient flexibility to the dye to allow the dye so modified with non-identical alkylammonium groups to couple to the metal oxide layer of a photoanode, and to thereby freely receive electrons from the resulting coupling of the oxidizing-reducing agent.    DETAILED DESCRIPTION - A dye comprising quaternary ammonium containing bipyridyl ligand and bis(thiocyanato)ruthenium of formula Ru(L)2(NCS)2AmA'n (I) is new.    L=2,2'-bipyridyl-4,4'-dicarboxylic acid or 2,2'-bipyridyl-4,4'-diphosphonic acid;    A=quaternary ammonium;    A'=quaternary ammonium different from A;    m and n= greater than or equal to 1;    m+n=2-4.    An INDEPENDENT CLAIM is included for a photoelectric device comprising a photoanode including the dye (106) for a photoelectric device; a cathode (103); and an electrolyte layer (102) formed between the photoanode (107) and the cathode.    DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of photoelectric device.    transparent electrode (101)    electrolyte layer (102)    cathode (103)    dye (106)    photoanode. (107)