Sensitization of n-type TiO2 electrode by a novel isoquinoline ruthenium(II) polypyridyl complex

Abstract

The effective sensitization of TiO2 to visible light by cis-[(dcbH2)2Ru(isq)2](ClO4) 2, where dcbH2 = 4,4′-(CO2H)2-2,2′-bipyridine and isq = isoquinoline, is reported. The photocurrent action spectrum obtained for the regenerative solar cell with dye coated nanocrystalline TiO2 films resulted in IPCE values up to 40%. This novel compound acts as an efficient TiO2 photoanode sensitizer in thin-layer sandwich-type solar cells.