NOVELTY - A dye-sensitized solar cell has sequential laminate of transparent substrate (10), transparent electrode (20), metal oxide layer (30) containing pigment, electrolyte polymer layer (40), counter electrode (50) and counter electrode substrate (60). The electrolyte polymer layer is a solid-state layer containing conductive polymer (A) doped with doping agent, ionic compound (B) which involves mutual substitution with dopant ionic species of doping agent.    USE - Dye-sensitized solar cell is used as electric power generation system.    ADVANTAGE - The dye-sensitized solar cell is economical and has excellent durability and stable electromotive force, and directly converts light into electricity stably without emitting carbon dioxide for long period of time. The electrolyte polymer layer does not have corrosivity with respect to electrode. The mesh electrode formed by copper can be used as electrode.    DETAILED DESCRIPTION - A dye-sensitized solar cell has sequential laminate of transparent substrate (10), transparent electrode (20), metal oxide layer (30) containing pigment, electrolyte polymer layer (40), counter electrode (50) and counter electrode substrate (60). The electrolyte polymer layer is a solid-state layer containing conductive polymer (A) doped with doping agent, ionic compound (B) which involves mutual substitution with dopant ionic species of doping agent. The doping agent is an acceptor-type doping agent chosen from compound having sulfonic acid group, compound having acetyl group, compound having carboxyl group, compound having boric acid group, compound having phosphoric acid group, and halogen compound. The ionic compound (B) of electrolyte polymer layer contains Lewis acid salt, alkali metal salt and metal chelate compound. The transparent electrode and/or counter electrode contain electroconductive metal formed in mesh shape. The metal oxide layer is formed in the metal oxide surface by fixing platinum and/or silver nanocolloid particles.    DESCRIPTION OF DRAWING(S) - The drawing shows the cross sectional view of dye-sensitized solar cell.    Transparent substrate (10)    Transparent electrode (20)    Metal oxide layer containing pigment (30)    Electrolyte polymer layer (40)    Counter electrode (50)    Counter electrode substrate (60)