PHOTOCHEMICAL CELL COMPRISING SEMICONDUCTOR MICROPARTICLES SENSITIZED WITH BINUCLEAR METAL COMPLEX DYE AND ELECTROLYSIS SOLUTION MAINLY COMPOSED OF IONIC LIQUID

The photochemical cell of the present invention comprises a semiconductor particle sensitized with a binuclear metal complex dye, which has a high absorption coefficient and an excellent electron transfer property, and an electrolyte solution comprising an ionic liquid as the major component. The photochemical cell is superior in durability.