NOVELTY - A dye-sensitized solar cell (10) comprises an oxide semiconductor electrode substrate having an electrode base material (11), counter substrate (2) having a second electrode base material (21), an electrolyte layer (3) including a redox pair and formed between oxide semiconductor electrode substrate and counter substrate which are disposed such that porous layer and catalyst layer are opposed to each other, where catalyst layer contains an insulating transparent fine particle and conductive polymer compound.    USE - As dye-sensitized solar cell, used in dye-sensitized solar cell module (claimed).    ADVANTAGE - The dye-sensitized solar cell provides a high-quality dye-sensitized solar cell module at low costs; and improves photoelectric conversion efficiency.    DETAILED DESCRIPTION - A dye-sensitized solar cell (10) comprises an oxide semiconductor electrode substrate having a first electrode base material (11) provided with a function as an electrode, and a porous layer (12) formed on first electrode base material and containing a dye-sensitizer-supported fine particle of a metal oxide semiconductor; a counter substrate (2) having a second electrode base material (21) provided with a function as an electrode, and a catalyst layer (22) formed on second electrode base material; and an electrolyte layer (3) including a redox pair and formed between oxide semiconductor electrode substrate and counter substrate which are disposed such that the porous layer and catalyst layer are opposed to each other, where at least one of first electrode base material and second electrode base material is a base material having transparency, where the catalyst layer contains an insulating transparent fine particle and conductive polymer compound, where the insulating transparent fine particle is made of a transparent resin.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of dye-sensitized solar cell module.    Counter substrate (2)    Electrolyte layer (3)    Dye-sensitized solar cell (10)    First electrode base material (11)    Porous layer (12)    Second electrode base material (21)    Catalyst layer (22)    Dye-sensitized solar cell module (30)