Patent ID: 7820908

Claim:
A dye-sensitized solar cell, comprising: a photoelectrode; a counter electrode; and an electrolyte sandwiched between the photoelectrode and counter electrode, wherein, the electrolyte is a composite polymer electrolyte selected from the group consisting of: (a) a mixture of a middle molecular substance having a radius of gyration of 10-13 {acute over (Å)} with a polymer having a radius of gyration of 100-1000 Å; (b) a mixture of a middle molecular substance having a radius of gyration of 10-13 {acute over (Å)} with inorganic nanoparticles capable of solidifying the middle molecular substance; (c) a mixture of a middle molecular substance having a radius of gyration of 10-13 {acute over (Å)} with a polymer having a radius of gyration of 100-1000 Å and inorganic nanoparticles capable of solidifying the middle molecular substance; (d) a middle molecular substance having a radius of gyration of 10-13 {acute over (Å)} having functional groups capable of forming hydrogen bonds or crosslinking bonds at both ends thereof; and redox couples; wherein the middle molecular substance having the radius of gyration of 10-13 {acute over (Å)} is selected from a group consisting of poly(propylene glycol), poly(ethylene glycol), poly(ethylene glycol methylether), poly(ethylene glycol dimethylether), and a copolymer thereof.