DYE SENSITIZATION PHOTOELECTRIC CONVERTER

摘要

A dye sensitization photoelectric converter in which light absorptance and photoelectric conversion efficiency are enhanced. A dye sensitization photoelectric converter (10) comprises a transparent substrate (1) made of glass or the like, a transparent electrode (negative pole) (2) composed of a transparent conductive layer of FTO (fluorine doped tin oxide (IV)SnO₂), a semiconductor layer (3) holding a plurality of kinds of photosensitizing dyes, an electrolyte layer (5), a counter electrode (positive pole) (6), a counter substrate (7), and a sealant (not shown). The photosensitizing dyes are composed of a plurality of kinds of dyes having sufficiently different minimum excitation energies, or a plurality of kinds of dyes held on the semiconductor layer (3) with different conformations. The semiconductor layer (3) employs a porous layer obtained by sintering fine particles of titanium oxide TiO₂, the electrolyte layer (5) employs an organic electrolyte solution containing an oxidation-reduction species (redox pair) such as I^-/I₃