Dye-sensitized solar cell

Patent metadata

Field	Value
Publication number	US-9805879-B2
Application number	US-201214353661-A
Country	US
Kind code	B2
Filing date	Nov 27, 2012
Priority date	Dec 28, 2011
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

A dye-sensitized solar cell including a working electrode having a photocatalytic film, a counter electrode, and an electrolyte-containing layer or solid charge-transfer layer containing a basic compound, wherein the photocatalytic film includes an oxide semiconductor layer containing a dye compound represented by the following formula (1),

wherein Y is an optionally substituted hydrocarbon group having 1 to 20 carbon atoms and having —CO—NR 4 — or —SO 2 —NR 4 — in the group, or a direct bond, Z is a conjugated group, R 1 , R 2 , and R 3 each represent an optionally substituted hydrocarbon group or an optionally substituted hydrocarbonoxy group, at least one of R 1 , R 2 , and R 3 is an optionally substituted hydrocarbonoxy group, and R 4 represents a hydrogen atom or an optionally substituted hydrocarbon group having 1 to 20 carbon atoms.

First claim

The invention claimed is:

1. A dye-sensitized solar cell comprising a working electrode having a photocatalytic film, a counter electrode, and an electrolyte-containing layer or a solid charge-transfer layer,
wherein the dye-sensitized solar cell contains a basic compound in the electrolyte-containing layer or the solid charge-transfer layer, and
the photocatalytic film comprises an oxide semiconductor layer containing a dye compound represented by formula (1),

wherein Y is any one of structural formulae (Y-1) to (Y-12)

Z is a conjugated group;
R 1 , R 2 , and R 3 each represent an optionally substituted hydrocarbon group or an optionally substituted hydrocarbonoxy group;
at least one of R 1 , R 2 , and R 3 is an optionally substituted hydrocarbonoxy group; and
R 4 represents a hydrogen atom or an optionally substituted hydrocarbon group having 1 to 20 carbon atoms.

2. The dye-sensitized solar cell according to claim 1 ,
wherein Z in the formula (1) is represented with any one of structural formulae (2-1) to (2-5),

wherein A 1 is an optionally substituted aromatic hydrocarbon ring group or an optionally substituted aromatic heterocyclic group,
A 2 represents a direct bond or a group comprising a chain of one to seven of one or more groups selected from groups represented by formulae (A2-1) to (A2-15),
R 5 and R 6 each represent an optionally substituted hydrocarbon group, R 5 and R 6 may be linked together to form a ring, and R 5 and R 6 may be each independently linked with A 1 to form a ring,
R 11 , R 12 , and R 13 each represent a known ligand that coordinates to M 2 ,
M 1 and M 2 each represents a metal element,
any hydrogen atoms in the formulae may be substituted with a fluorine atom, a chlorine atom, an iodine atom, a bromine atom, a cyano group, a nitro group, an —OR 2 group, an —SR 2 group, an optionally substituted aliphatic hydrocarbon group, or Y—SiR 1 R 2 R 3 ,
wherein R 1 , R 2 , and R 3 each represent an optionally substituted hydrocarbon group or an optionally substituted hydrocarbonoxy group, and
R 7 represents a hydrogen atom or an optionally substituted hydrocarbon group,

wherein X represents S, O, or NR, wherein R represents a hydrogen atom or an optionally substituted hydrocarbon group, and any hydrogen atom in the group may be substituted with a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a cyano group, a nitro group, an —OR 7 group, an —SR 7 group, an —NR 7 R 8 group, or an optionally substituted aliphatic hydrocarbon group, wherein R 7 and R 8 each represent a hydrogen atom or an optionally substituted hydrocarbon group.

3. The dye-sensitized solar cell according to claim 2 , wherein the structural formula (3) in the structural formula (2-1)

is any one of the following substructures (3-1) to (3-8),

wherein A 1 is an optionally substituted aromatic hydrocarbon ring group or an optionally substituted aromatic heterocyclic group, and
R 5 and R 6 each represent an optionally substituted hydrocarbon group, R 5 and R 6 may be linked together to form a ring, and R 5 and R 6 may be each independently linked with A 1 to form a ring,
any hydrogen atoms in the formulae may be substituted with a fluorine atom, a chlorine atom, an iodine atom, a bromine atom, a cyano group, a nitro group, an —OR 7 group, an —SR 7 group, an optionally substituted aliphatic hydrocarbon group, or Y—SiR 1 R 2 R 3 , wherein R 1 , R 2 , and R 3 each represent an optionally substituted hydrocarbon group or an optionally substituted hydrocarbonoxy group, and R 7 represents a hydrogen atom or an optionally substituted hydrocarbon group.

4. The dye-sensitized solar cell according to claim 1 , wherein the basic compound is a pyridine derivative, an imidazole derivative, or a guanidine salt.

5. The dye-sensitized solar cell according to claim 1 , wherein the electrolyte-containing layer is a layer containing a solvent, and the solvent contains at least 3-methoxypropionitrile, propylene carbonate, or 3-methyl-1-propylimidazolium iodide.

6. The dye-sensitized solar cell according to claim 1 , wherein the oxide semiconductor layer comprises an oxide semiconductor which is titanium oxide or zinc oxide.

7. The dye-sensitized solar cell according to claim 2 , wherein the basic compound is a pyridine derivative, an imidazole derivative, or a guanidine salt.

8. The dye-sensitized solar cell according to claim 3 , wherein the basic compound is a pyridine derivative, an imidazole derivative, or a guanidine salt.

9. The dye-sensitized solar cell according to claim 2 , wherein the electrolyte-containing layer is a layer containing a solvent, and the solvent contains at least 3-methoxypropionitrile, propylene carbonate, or 3-methyl-1-propylimidazolium iodide.

10. The dye-sensitized solar cell according to claim 3 , wherein the electrolyte-containing layer is a layer containing a solvent, and the solvent contains at least 3-methoxypropionitrile, propylene carbonate, or 3-methyl-1-propylimidazolium iodide.

11. The dye-sensitized solar cell according to claim 4 , wherein the electrolyte-containing layer is a layer containing a solvent, and the solvent contains at least 3-methoxypropionitrile, propylene carbonate, or 3-methyl-1-propylimidazolium iodide.

12. The dye-sensitized solar cell according to claim 2 , wherein the oxide semiconductor layer comprises an oxide semiconductor which is titanium oxide or zinc oxide.

13. The dye-sensitized solar cell according to claim 3 , wherein the oxide semiconductor layer comprises an oxide semiconductor which is titanium oxide or zinc oxide.

14. The dye-sensitized solar cell according to claim 4 , wherein the oxide semiconductor layer comprises an oxide semiconductor which is titanium oxide or zinc oxide.

15. The dye-sensitized solar cell according to claim 5 , wherein the oxide semiconductor layer comprises an oxide semiconductor which is titanium oxide or zinc oxide.

16. The dye-sensitized solar cell according to claim 7 , wherein the electrolyte-containing layer is a layer containing a solvent, and the solvent contains at least 3-methoxypropionitrile, propylene carbonate, or 3-methyl-1-propylimidazolium iodide.

17. The dye-sensitized solar cell according to claim 8 , wherein the electrolyte-containing layer is a layer containing a solvent, and the solvent contains at least 3-methoxypropionitrile, propylene carbonate, or 3-methyl-1-propylimidazolium iodide.

18. The dye-sensitized solar cell according to claim 7 , wherein the oxide semiconductor layer comprises an oxide semiconductor which is titanium oxide or zinc oxide.

19. The dye-sensitized solar cell according to claim 8 , wherein the oxide semiconductor layer compris

Assignees

• Adeka Corp

Inventors

• Akimoto Kensaku
• Yano Toru
• Sakamaki Koichi

Classifications

• C07F17/02

  of metals of Groups 8, 9 or 10 of the Periodic Table · CPC title

• H01G9/204 Primary

  comprising zinc oxides, e.g. ZnO (H01G9/2036 takes precedence) · CPC title

• H01G9/2059

  comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution · CPC title

• C07F15/0053

  without a metal-carbon linkage · CPC title

• Y02E10/542

  Dye sensitized solar cells · CPC title