Dye-sensitized solar cell

Patent metadata

Field	Value
Publication number	US-2015187511-A1
Application number	US-201314410819-A
Country	US
Kind code	A1
Filing date	Jun 26, 2013
Priority date	Jun 26, 2012
Publication date	Jul 2, 2015
Grant date	—

Abstract

Provided is a dye-sensitized solar cell which exhibits excellent heat resistance and high photoelectric conversion efficiency. This dye-sensitized solar cell is provided with: a negative electrode having a semiconductor layer with a pigment as a photosensitizer, an electrolyte layer located on the semiconductor layer of the negative electrode having a paired oxidized species and reduced species, and a positive electrode located on the electrolyte layer having a conductive polymer layer that acts as a catalyst to convert the oxidized species into the reduced species. The conductive polymer layer in the positive electrode contains a polymer derived from at least one monomer selected from the group consisting of 3,4-disubstituted thiophenes; and an anion as a dopant to the polymer generated from at least one organic non-sulfonate compound having an anion with the molecular weight of 200 or more. The thickness of the conductive polymer layer is within the range of 100 to 10000 nm.

First claim

1 - 7 . (canceled)

8 . A dye-sensitized solar cell comprising:
a negative electrode having a semiconductor layer with a pigment as a photosensitizer; an electrolyte layer located on the semiconductor layer of the negative electrode having a paired oxidized species and reduced species; and a positive electrode located on the electrolyte layer having a conductive polymer layer that acts as a catalyst to convert the oxidized species into the reduced species, wherein the conductive polymer layer in the positive electrode comprises: a polymer derived from at least one monomer selected from the group consisting of 3,4-disubstituted thiophenes; and an anion as a dopant to the polymer generated from at least one organic non-sulfonate compound having an anion with the molecular weight of 200 or more, and the thickness of the conductive polymer layer is within the range of 100 to 10000 nm,

9 . The dye-sensitized solar cell according to claim 8 , wherein the density of the conductive polymer layer is within the range of 1.15 to 1.80 g/cm 3 .

10 . The dye-sensitized solar cell according to claim 8 , wherein the semiconductor layer in the negative electrode is formed by titanium oxide.

11 . The dye-sensitized solar cell according to claim 9 , wherein the semiconductor layer in the negative electrode is formed by titanium oxide.

12 . The dye-sensitized solar cell according to claim 8 , wherein the thickness of the semiconductor layer is within the range of 3 to 20 μm.

13 . The dye-sensitized solar cell according to claim 9 , wherein the thickness of the semiconductor layer is within the range of 3 to 20 μm.

14 . The dye-sensitized solar cell according to claim 11 , wherein the thickness of the semiconductor layer is within the range of 3 to 20 μm.

15 . The dye-sensitized solar cell according to claim 8 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of a sulfonylimidic acid of the formula (I) or the formula (II)

where m is an integer from 1 to 8, n is an integer from 1 to 8, and o is an integer 2 or 3, and salts thereof.

16 . The dye-sensitized solar cell according to claim 9 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of a sulfonylimidic acid of the formula (I) or the formula (II)

where m is an integer from 1 to 8, n is an integer from 1 to 8, and o is an integer 2 or 3, and salts thereof.

17 . The dye-sensitized solar cell according to claim 11 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of a sulfonylimidic acid of the formula (I) or the formula (II)

where m is an integer from 1 to 8, n is an integer from 1 to 8, and o is an integer 2 or 3, and salts thereof.

18 . The dye-sensitized solar cell according to claim 14 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of a sulfonylimidic acid of the formula (I) or the formula (II)

where m is an integer from 1 to 8, n is an integer from 1 to 8, and o is an integer 2 or 3, and salts thereof

19 . The dye-sensitized solar cell according to claim 8 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of borodisalicylic acid and borodisalicylic salts.

20 . The dye-sensitized solar cell according to claim 9 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of borodisalicylic acid and borodisalicylic salts.

21 . The dye-sensitized solar cell according to claim 11 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of borodisalicylic acid and borodisalicylic salts.

22 . The dye-sensitized solar cell according to claim 14 , wherein the organic non-sulfonate compound is at least one compound selected from the group consisting of borodisalicylic acid and borodisalicylic salts.

23 . The dye-sensitized solar cell according to claim 8 , wherein the monomer is 3,4-ethylenedioxythiophene.

24 . The dye-sensitized solar cell according to claim 9 , wherein the monomer is 3,4-ethylenedioxythiophene.

25 . The dye-sensitized solar cell according to claim 14 , wherein the monomer is 3,4-ethylenedioxythiophene.

26 . The dye-sensitized solar cell according to claim 16 , wherein the monomer is 3,4-ethylenedioxythiophene.

27 . The dye-sensitized solar cell according to claim 20 , wherein the monomer is 3,4-ethylenedioxythiophene.

Assignees

• Nippon Chemicon

Inventors

• Machida Kenji
• Kamiyama Nozomu
• Takeuchi Shingo
• Tamamitsu Kenji

Classifications

• H01G9/2059

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

• H01G9/2022 Primary

  characterized by he counter electrode · CPC title

• H01M14/005

  Photoelectrochemical storage cells (light sensitive devices H01G9/20, semiconductors sensitive to light H10F) · CPC title

• H01G9/2031

  comprising titanium oxide, e.g. TiO2 (H01G9/2036 takes precedence) · CPC title

• H01M4/608

  containing heterocyclic rings · CPC title