Photovoltaic cells having a thermoelectric material

• US 20060225782A1
• Filed: 03/21/2006
• Published: 10/12/2006
• Est. Priority Date: 03/21/2005
• Status: Abandoned Application

• Current Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Original Assignee: Merck Patent GmbH (Merck & Co., Inc.)
• Inventors: Gaudiana, Russell, Berke, Howard
• Application Number:
  US11/385,304
• Publication Number:
  US 20060225782A1
• Time in Patent Office: Days
• US Class Current: 136/252
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: H01G 9/2031 comprising titanium oxide, e.g. TiO2 H01G9/2036 takes precedence
• CPC Class Codes: H02S 40/44 Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time directly associated with the PV cell or integrated with the PV cell H01L31/0525
• CPC Class Codes: H10K 30/151 the wide bandgap semiconductor comprising titanium oxide, e.g. TiO2
• CPC Class Codes: H10K 30/30 comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
• CPC Class Codes: H10K 85/113 Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
• CPC Class Codes: H10K 85/211 Fullerenes, e.g. C60
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02E 10/60 Thermal-PV hybrids

Abstract

Photovoltaic cells having a thermoelectric material, as well as related systems, components, and methods are disclosed.

Claims

1. A photovoltaic cell, comprising:

a substrate;

a photoactive material supported by the substrate; and

a thermoelectric material, wherein the substrate is between the photoactive material and the thermoelectric material.

2. The photovoltaic cell of claim 1, wherein the thermoelectric material comprises a polymer selected from the group consisting of polythiophenes, polyanilines, polysulfones, polysiloxanes, poly(carbozylenevinylene)s, and combinations thereof.

3. The photovoltaic cell of claim 2, wherein the thermoelectric material comprises a substituted polythiophene.

4. The photovoltaic cell of claim 3, wherein the substituted polythiophene comprises poly(3-hexylthiophene), poly(3-octylthiophene), or poly(3-dodecylthiophene).

5. The photovoltaic cell of claim 1, wherein the thermoelectric material has a Seebeck coefficient at least about 500 μ

V/K.

6. The photovoltaic cell of claim 1, wherein the thermoelectric material has a Seebeck coefficient at least about 1 mV/K.

7. The photovoltaic cell of claim 1, wherein the thermoelectric material has a Seebeck coefficient at least about 5 mV/K.

8. The photovoltaic cell of claim 1, wherein the photoactive material comprises an electron acceptor material.

9. The photovoltaic cell of claim 1, wherein the electron acceptor material comprises a material selected from the group consisting of fullerenes, inorganic nanoparticles, oxadiazoles, discotic liquid crystals, carbon nanorods, inorganic nanorods, polymers containing CN groups, polymers containing CF₃ groups, and combinations thereof.

10. The photovoltaic cell of claim 8, wherein the electron acceptor material comprises a fullerene.

11. The photovoltaic cell of claim 10, wherein the fullerene is a substituted fullerene.

12. The photovoltaic cell of claim 8, wherein the photoactive material further comprises an electron donor material.

13. The photovoltaic cell of claim 12, wherein the electron donor material comprises a polymer selected from the group consisting of polyacetylenes, polyanilines, polyphenylenes, poly(p-phenylene vinylene)s, polythienylvinylenes, polythiophenes, polyporphyrins, porphyrinic macrocycles, polymetallocenes, polyisothianaphthalenes, polyphthalocyanines, discotic liquid crystal polymers, and combinations thereof.

14. The photovoltaic cell of claim 1, wherein the photoactive material comprises inorganic nanoparticles.

15. The photovoltaic cell of claim 14, wherein the inorganic nanoparticles comprise a compound selected from the group consisting of titanium oxide, zirconium oxide, zinc oxide, tungsten oxide, niobium oxide, lanthanum oxide, tin oxide, terbium oxide, tantalum oxide, indium phosphide, cadmium selenide, lead sulphide, and combinations thereof.

16. The photovoltaic cell of claim 14, wherein the photoactive material further comprises a dye.

17. The photovoltaic cell of claim 16, wherein the dye comprises a compound selected from the group consisting of cyanines, merocyanines, phthalocyanines, pyrroles, xanthines, and combinations thereof.

18. The photovoltaic cell of claim 14, wherein the photoactive material comprises dye-sensitized interconnected inorganic nanoparticles.

19. The photovoltaic cell of claim 1, wherein the photovoltaic cell comprises two electrodes, at least one of the electrodes comprising ITO, tin oxide, or fluorine-doped tin oxide.

20. The photovoltaic cell of claim 1, wherein the substrate is a flexible substrate.

21. The photovoltaic cell of claim 1, wherein the substrate comprises a polymer selected from a group consisting of polyethylene naphthalates, polyethylene terephthalates, polyethyelenes, polypropylenes, polyamides, polymethyl methacrylate, polycarbonates, polyurethanes, and combinations thereof.

22. The photovoltaic cell of claim 1, wherein the photovoltaic cell comprises a silicon solar cell, a CIGS solar cell, a CIS solar cell, a dye-sensitized solar cell, a polymer solar cell, or a hybrid solar cell.

23. A photovoltaic module, comprising:

a first photovoltaic cell comprising a substrate, a photoactive material supported by the substrate, and a thermoelectric material, wherein the substrate is between the photoactive material and the thermoelectric material; and

a second photovoltaic cell;

wherein the first and second photovoltaic cells are electrically connected.

24. The photovoltaic module of claim 23, wherein the first and second photovoltaic cells are electrically connected in series.

25. The photovoltaic module of claim 23, wherein the first and second photovoltaic cells are electrically connected in parallel.

26. A photovoltaic cell, comprising:

a photoactive material; and

a thermoelectric material, wherein the thermoelectric material is configured to be electrically connected to a load.

27. A system, comprising:

a photovoltaic cell, comprising;

a photoactive material; and

a thermoelectric material; and

a load electrically connected to the thermoelectric material.

28. A photovoltaic cell, comprising:

a photoactive material; and

a thermoelectric material, provided that the thermoelectric material is not poly(3-hexylthiophene).

29. A photovoltaic cell, comprising:

a photoactive material; and

a thermoelectric material that is electrically isolated from the photoactive material.