PHOTOSENSITIVE ORGANIC DYES FOR DYE-SENSITIZED SOLAR CELLS

• US 20150294797A1
• Filed: 07/14/2014
• Published: 10/15/2015
• Est. Priority Date: 04/09/2014
• Status: Active Grant

• Current Assignee: National Chung Hsing University (Government of The Republic of China)
• Original Assignee: National Chung Hsing University (Government of The Republic of China)
• Inventors: YEH, Chen-Yu, HSU, Chia-Wei, MAI, Chi-Lun, SU, Po-Cheng
• Granted Patent: US 10,032,568 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C09B 1/00 Dyes with anthracene nucleus not condensed with any other ring
• CPC Class Codes: C09B 57/008 Triarylamine dyes containing no other chromophores
• CPC Class Codes: H01G 9/2059 comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
• CPC Class Codes: H10K 85/615 Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/652 Cyanine dyes
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: Y02E 10/542 Dye sensitized solar cells
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A photosensitive organic dye is adapted to be used in a photoelectric converting device such as a dye-sensitized solar cell. The photosensitive organic dye having a structural formula (I):

where,

• Aryl₁ represents substituted or unsubstituted aryl with one or more aromatic rings,
• NR₂R₃ represents a substituted electron-donating group, wherein N represents a nitrogen atom, and R₂ and R₃ independently represent identical or different substituted or unsubstituted hydrocarbon groups,
• L represents an optional linker unit, and
• A represents an electron-withdrawing group.

Claims

1. A photosensitive organic dye for a photoelectric converting device, the photosensitive organic dye having a structural formula (I):

2. The photosensitive organic dye according to claim 1, wherein Aryl₁ is represented by one of the following formulae:

3. The photosensitive organic dye according to claim 1, wherein the electron-donating group NR₂R₃ is represented by one of the following formulae:

4. The photosensitive organic dye according to claim 1, wherein the linker unit L is represented by one of the following formulae:

5. The photosensitive organic dye according to claim 1, wherein the electron-withdrawing group A is represented by one of the following formulae:

6. A photosensitive organic dye for a photoelectric converting device, the photosensitive organic dye comprising:

a central unit comprising a substituted or unsubstituted aryl with one or more aromatic rings (Aryl₁);

an electron donor unit coupled to a first side of the central unit, and comprising a substituted electron-donating group NR₂R₃, wherein N represents a nitrogen atom, and R₂ and R₃ independently represent identical or different substituted or unsubstituted alkyl groups or aryl groups;

a carbon-carbon triple bond unit having a first side coupled to a second side of the central unit;

an optional linker unit L coupled to a second side of the carbon-carbon triple bond unit; and

an electron acceptor unit coupled to the second side of the carbon-carbon triple bond unit or the linker unit L, and comprising an electron-withdrawing group A.

7. The photosensitive organic dye according to claim 6, wherein Aryl₁ is selected from substituted or unsubstituted phenyl, naphthyl, anthryl or a derivative thereof.

8. The photosensitive organic dye according to claim 7, wherein Aryl₁ is represented by one of the following formulae:

9. The photosensitive organic dye according to claim 6, wherein R₂ and R₃ independently represent identical or different substituted or unsubstituted phenyl, diphenyl, anthryl or a derivative thereof.

10. The photosensitive organic dye according to claim 9, wherein the electron-donating group NR₂R₃ is represented by one of the following formulae:

11. The photosensitive organic dye according to claim 6, wherein the photoelectric converting device is a dye-sensitized solar cell.

12. The photosensitive organic dye according to claim 6, wherein the linker unit L represents a substituted or unsubstituted unsaturated aliphatic ring or aromatic ring selected from a five or six membered ring containing a conjugated double bond or a five or six membered ring containing at least one heteroatom, wherein the at least one heteroatom is selected from sulfur, oxygen and/or nitrogen.

13. The photosensitive organic dye according to claim 12, wherein the unsaturated aliphatic ring or the aromatic ring is represented by one of the following formulae:

14. The photosensitive organic dye according to claim 6, wherein the electron-withdrawing group A is selected from unsaturated cyclic hydrocarbon carboxyl, unsaturated cyclic hydrocarbon hydroxyl, unsaturated cyclic hydrocarbon dihydroxyl, unsaturated cyclic hydrocarbon dicarboxyl or unsaturated cyclic hydrocarbon diketone, wherein the unsaturated cyclic hydrocarbon group is substituted or unsubstituted.

15. The photosensitive organic dye according to claim 14, wherein the electron-withdrawing group A has conjugated double bonds.

16. The photosensitive organic dye according to claim 14, wherein the unsaturated cyclic hydrocarbon group contains at least one heteroatom, wherein the at least one heteroatom is selected from sulfur, oxygen and/or nitrogen.

17. The photosensitive organic dye according to claim 14, wherein the electron-withdrawing group A is represented by one of the following formulae:

18. The photosensitive organic dye according to claim 6, wherein the photosensitive organic dye is represented by one of the following formulae:

19. A dye-sensitized solar cell containing the photosensitive organic dye according to claim 6, wherein the photosensitive organic dye is coated on a semiconductor film and used as a photosensitizer.