Dye-sensitized solar cell with the near-infrared sensitization of aluminum phthalocyanine

Abstract

The dye-sensitized solar cell (DSSC) using visible and near-infrared sensitization of nanocrystalline TiO 2 films using a series of four aluminum phthalocyanines was developed and its photoelectrochemical properties were investigated. By using aluminum 2,9,16,23-tetrakis(phenyl-thio)-29H,31H-phthalocyanine chloride adsorbed on a nanocrystalline TiO 2 film electrode, the I SC , V OC , FF , P max and η values were largest compared with the other DSSCs using aluminum phthalocyanines. For all the DSSCs using aluminum phthalocyanines, IPCE values at near-infrared region (700 nm) are larger than those at visible region (500 nm). Thus, the DSSC using near-infrared sensitization of nanocrystalline TiO 2 film by aluminum phthalocyanines was developed.