DYE-SENSITIZED SOLAR CELL AND PRODUCTION METHOD OF THE SAME
Disclosed is a dye-sensitized solar cell having at least a substrate, a first electrode, a photoelectric conversion layer containing a semiconductor and a sensitizing dye, a positive hole transporting layer containing a solid positive hole transporting material, and a second electrode, in which the positive hole transporting material contains a polythiophene-based polymer which is a conductive polymer formed via copolymerization of at least 2 compounds having a structure represented by Formula (1), (2), or (3) described in the specification.
1 . A dye-sensitized solar cell having at least a substrate, a first electrode, a photoelectric conversion layer containing a semiconductor and a sensitizing dye, a positive hole transporting layer containing a solid positive hole transporting material, and a second electrode, wherein the positive hole transporting material contains a polythiophene-based polymer which is a conductive polymer formed via copolymerization of at least 2 compounds having a structure represented by Formula (1), (2), or (3),
wherein, R 1 to R 4 individually represents a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, a polyethylene oxide group, or an aryl group; any of the groups may be substituted, and R 1 to R 4 may be same or different; and the thiophene ring may have a substituent,
wherein, R 5 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a polyethylene oxide group, or an aryl group; any of the groups may be substituted; n represents an integer of 1 or 2, and m represents an integer of 2n+4; and the thiophene ring may have a substituent,
wherein R 6 to 9 individually represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a polyethylene oxide group, or an aryl group, any of the groups may be substituted; and R 6 to R 9 may be same or different; and the thiophene ring may have a substituent.
2 . The dye-sensitized solar cell of claim 1 , wherein at least one of R 1 to R 4 in a compound having the structure represented by Formula (1) is an alkyl group or a cycloalkyl group having 6 to 14 carbon atoms, an aryl group having at least 6 carbon atoms, or an alkyl group having an oxyethylene group.
3 . The dye-sensitized solar cell of claim 2 , wherein at least one of R 1 to R 4 is an alkyl group having 6 to 14 carbon atoms or an aryl group having at least 6 carbon atoms.
4 . The dye-sensitized solar cell of claim 3 , wherein at least one of R 1 to R 4 is an alkyl group having 6 to 14 carbon atoms.
5 . The dye-sensitized solar cell of claim 1 , wherein the substituent of the thiophene ring of Formula (1) is a halogen atom.
6 . The dye-sensitized solar cell of claim 5 , wherein the substituent of the thiophene ring of Formula (1) is a bromine atom.
7 . The dye-sensitized solar cell of claim 1 , wherein n in Formula (2) is 1.
8 . The dye-sensitized solar cell of claim 7 , wherein R 5 in the compound having the structure represented by Formula (2) is a hydrogen atom, an alkyl group or a cycloalkyl group having 6 to 14 carbon atoms, an aryl group having at least 6 carbon atoms, or an alkyl, group having an oxyethylene group.
9 . The dye-sensitized solar cell of claim 8 , wherein R 5 is a hydrogen atom, an alkyl group having 6 to 14 carbon atoms or an aryl group having at least 6 carbon atoms.
10 . The dye-sensitized solar cell of claim 9 , wherein R 5 is a hydrogen atom, an alkyl group having 6 to 14 carbon atoms or an aryl group having at least 6 carbon atoms.
11 . The dye-sensitized solar cell of claim 10 , wherein R 5 is a hydrogen atom, an alkyl group having 6 to 14 carbon atoms.
12 . The dye-sensitized solar cell of claim 1 , wherein the substituent of the thiophene ring of Formula (2) is a halogen atom.
13 . The dye-sensitized solar cell of claim 12 , wherein the substituent of the thiophene ring of Formula (2) is a bromine atom.
14 . The dye-sensitized solar cell of claim 1 , wherein at least one of R 6 to R 9 in a compound having the structure represented by Formula (3) is an alkyl or a cycloalkyl group having 6 to 14 carbon atoms, an aryl group having at least 6 carbon atoms, or an alkyl group having an oxyethylene group.
15 . The dye-sensitized solar ceil of claim 14 , wherein at least one of R 6 to R 9 is an alkyl group having 6 to 14 carbon atoms and an aryl group having at least 6 carbon atoms.
16 . The dye-sensitized solar cell of claim 15 , wherein at least one of R 6 to R 9 is an alkyl group having 6 to 14 carbon atoms.
17 . The dye-sensitized solar cell of claim 1 , wherein the substituent of the thiophene ring of Formula (3) is a halogen atom.
18 . The dye-sensitized solar cell of claim 17 , wherein the substituent of the thiophene ring of Formula (3) is a bromine atom.