Dye-sensitized solar cell

A dye-sensitized solar cell comprising:

• a working electrode having a porous titanium oxide layer on a conductive substrate capable of transmitting light;
• a counter electrode disposed so as to face the working electrode;
• a photosensitizing dye supported on the porous titanium oxide layer of the working electrode;
• and
• an electrolyte disposed between the working electrode and the counter electrode,
• wherein the porous titanium oxide layer includes an anatase crystal-type titanium oxide composed of an anatase crystal and a rutile crystal-type titanium oxide composed of a rutile crystal,
• the porous titanium oxide layer includes a laminate consisting of a plurality of layers, and an outermost layer disposed at a position farthest from the conductive substrate of the laminate contains the rutile crystal-type titanium oxide,
• at least one intermediate layer provided between the outermost layer and the conductive substrate in the laminate contains the anatase crystal-type titanium oxide,
• a first intermediate layer disposed at a position closest to the outermost layer of the at least one intermediate layer contains the anatase crystal-type titanium oxide and the rutile crystal-type titanium oxide, and
• a content of the rutile crystal-type titanium oxide in the outermost layer is greater than a content of the rutile crystal-type titanium oxide in the intermediate layer.