Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2011060341) ELECTROCONDUCTIVE PASTE COMPOSITION
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

CLAIMS

We claim:

1. An electroconductive paste composition comprising:

(a) silver particles;

(b) glass frit;

(c) fine, electrically conductive, metal particles selected from the group consisting of gold and platinum group metals, wherein the metal particles have a particle diameter of about 1 nm to about 1 micron and are present in an amount of about 0.0001 to less than 0.01 wt% based on the weight of the paste composition; and

(d) an organic vehicle.

2. The composition according to claim 1, wherein the metal particles are at least one selected from the group consisting of gold, palladium, and platinum.

3. The composition according to claim 1 , comprising about 40 to about 95% silver particles, about 0.5 to about 6 % glass frit, about 0.0001 to less than 0.01 wt % fine metal particles, and about 5 to about 30% organic vehicle, all percentages being by weight based on a total weight of the composition.

4. The composition according to claim 1, further comprising about 0.1 to about 5 weight % tantalum pentoxide particles.

5. The composition according to claim 4, wherein the tantalum pentoxide particles have a particle diameter of less than about 5 microns.

6. The composition according to claim 1, wherein the fine metal particles have a particle diameter of about 1 nm to about 500 nm.

7. The composition according to claim 1, wherein the fine metal particles comprise gold.

8. The composition according to claim 1, wherein the fine metal particles are in a form of a metal organic compound.

9. An electroconductive paste composition comprising:

(a) silver particles;

(b) glass frit;

(c) tantalum pentoxide particles having a particle diameter of less than about 5 microns; and

(d) an organic vehicle.

10. The composition according to claim 9, comprising about 40 to about 95% silver particles, about 0.5 to about 6 % glass frit, about 0.1 to about 2 % tantalum pentoxide particles, and about 5 to about 30% organic vehicle, all percentages being by weight based on the total weight of the composition.

11. The composition according to claim 9, further comprising about 0.0001 to about 5 weight % fine, electrically conductive, metal particles selected from the group consisting of gold and platinum group metals.

12. The composition according to claim 11 , wherein the fine metal particles have a particle diameter of about 1 nm to about 1 micron.

13. The composition according to claim 11 , wherein the metal particles comprise at least one selected from the group consisting of gold, palladium, and platinum.

14. The composition according to claim 11, wherein the fine metal particles are in a form of a metal organic compound.

15. An electroconductive paste composition comprising:

(a) silver particles;

(b) glass frit;

(c) fine, electrically conductive, gold particles, wherein the gold particles have a particle diameter of about 1 nm to about 1 micron and are present in an amount of about 0.0001 to less than 0.1 wt% based on the weight of the paste composition; and

(d) an organic vehicle.

16. The composition according to claim 15, comprising about 40 to about 95% silver particles, about 0.5 to about 6 % glass frit, about 0.0001 to less than 0.1 wt % gold, and about 5 to about 30% organic vehicle, all percentages being by weight based on a total weight of the composition.

17. The composition according to claim 15, further comprising about 0.1 to about 5 weight % tantalum pentoxide particles.

18. The composition according to claim 17, wherein the tantalum pentoxide particles have a particle diameter of less than about 5 microns.

19. The composition according to claim 15, wherein the gold particles have a particle diameter of about 1 nm to about 500 nm.

20. The composition according to claim 15, wherein the gold particles are in a form of a metal organic compound.

21. A solar cell electrode formed by applying an electroconductive paste composition to a substrate and firing the paste to form the electrode, wherein the electroconductive paste composition comprises:

(a) silver particles;

(b) glass frit;

(c) fine, electrically conductive, metal particles selected from the group consisting of gold and platinum group metals, wherein the metal particles have a particle diameter of about 1 nm to about 1 micron and are present in an amount of about 0.0001 to less than 0.01 wt% based on the weight of the paste composition; and

(d) an organic vehicle.

22. A solar cell electrode formed by applying an electroconductive paste composition to a substrate and firing the paste to form the electrode, wherein the electroconductive paste composition comprises:

(a) silver particles;

(b) glass frit;

(c) tantalum pentoxide particles having a particle diameter of less than about 5 microns; and

(d) an organic vehicle.

23. A solar cell electrode formed by applying an electroconductive paste composition to a substrate and firing the paste to form the electrode, wherein the electroconductive paste composition comprises:

(a) silver particles;

(b) glass frit;

(c) fine, electrically conductive, gold particles, wherein the gold particles have a particle diameter of about 1 nm to about 1 micron and are present in an amount of about 0.0001 to less than 0.1 wt% based on the weight of the paste composition; and

(d) an organic vehicle.