Organic dye for a dye-sensitized solar cell

Patent metadata

Field	Value
Publication number	US-9997299-B2
Application number	US-201415025804-A
Country	US
Kind code	B2
Filing date	Oct 1, 2014
Priority date	Oct 1, 2013
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

Organic dye for a dye-sensitized solar cell (DSSC) comprising at least one electron-acceptor unit and at least one π-conjugated unit. Said organic dye is particularly useful in a dye-sensitized photoelectric transformation element which, in its turn, can be used in a dye-sensitized solar cell (DSSC).

First claim

The invention claimed is:

1. An organic dye having a formula (I):

wherein:
X is a hydrogen atom, or a carboxycyanovinylene group having the formula (II):

wherein R 5 is an hydrogen atom;
Z is a carboxycyanovinylene group having the formula (II) or (IV):

wherein R 5 is an hydrogen atom;
R 1 and R 2 , identical to each other, are a n-hexyl group, a n-octyl group, a n-decyl group, or a n-dodecyl group;
R 3 and R 4 , identical to or different from each other, are a hydrogen atom or a n-hexyl group, a n-octyl group, a n-decyl group, or a n-dodecyl group; or, R 3 and R 4 are bound to each other to form, together with the other atoms to which they are bound, a saturated cycle containing four carbon atoms and two oxygen atoms;
n is 1;
p is 0 or 1; and
m is 1.

2. A dye-sensitized photoelectric transformation element comprising the organic dye of claim 1 , wherein the dye-sensitized photoelectric transformation element is supported on oxide semiconductor particles.

3. A dye-sensitized solar cell comprising the dye-sensitized photoelectric transformation element of claim 2 .

4. The organic dye of claim 1 , wherein R 1 and R 2 are an n-octyl group.

5. The organic dye of claim 1 , wherein R 3 and R 4 , identical or different from each other, are a hydrogen or an n-octyl group.

6. The organic dye of claim 1 , wherein R 3 and R 4 are bound to each other to form a 1,4 dioxane.

7. A dye-sensitized photoelectric transformation element comprising the organic dye of claim 4 , wherein the dye-sensitized photoelectric transformation element is supported on oxide semiconductor particles.

8. A dye-sensitized photoelectric transformation element comprising the organic dye of claim 5 , wherein the dye-sensitized photoelectric transformation element is supported on oxide semiconductor particles.

9. A dye-sensitized photoelectric transformation element comprising the organic dye of claim 6 , wherein the dye-sensitized photoelectric transformation element is supported on oxide semiconductor particles.

10. A dye-sensitized solar cell comprising the dye-sensitized photoelectric transformation element of claim 7 .

11. A dye-sensitized solar cell comprising the dye-sensitized photoelectric transformation element of claim 8 .

12. A dye-sensitized solar cell comprising the dye-sensitized photoelectric transformation element of claim 9 .

Assignees

• Eni Spa
• Centre Nat Rech Scient

Inventors

• Biagini Paolo
• Roncali Jean
• Demeter Dora
• Leriche Philippe

Classifications

• C08G2261/91

  Photovoltaic applications · CPC title

• C08G2261/3223

  containing one or more sulfur atoms as the only heteroatom, e.g. thiophene · CPC title

• C09B23/102

  two heterocyclic rings linked carbon-to-carbon (C09B7/00 takes precedence) · CPC title

• C08G61/126

  with a five-membered ring containing one sulfur atom in the ring · CPC title

• C08G2261/1424

  containing ether groups, including alkoxy · CPC title