Glass composition, glass powder, conductive paste, and solar cell

Patent metadata

Field	Value
Publication number	US-10407340-B2
Application number	US-201816183112-A
Country	US
Kind code	B2
Filing date	Nov 7, 2018
Priority date	Nov 8, 2017
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A glass composition includes, as expressed by mol % in terms of oxide, from 15 to 40% of PbO, from 25 to 50% of MoO3, from 5 to 25% of P2O5 and from 7 to 15% of ZnO. A glass powder includes the glass composition. The glass powder has D50 of from 0.3 to 2.0 μm, where D50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

First claim

The invention claimed is:

1. A glass composition comprising, as expressed by mol % in terms of oxide:
from 15 to 40% of PbO;
from 25 to 50% of MoO 3 ;
from 5 to 25% of P 2 O 5 ; and
from 7 to 15% of ZnO.

2. The glass composition according to claim 1 , further comprising, expressed by mol % in terms of oxide, from 1 to 15% of Li 2 O.

3. The glass composition according to claim 2 , further comprising, expressed by mol % in terms of oxide, from 1 to 25% of WO 3 .

4. The glass composition according to claim 3 , which has a glass transition temperature of from 300 to 450° C.

5. A glass powder comprising the glass composition according to claim 4 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

6. A glass powder comprising the glass composition according to claim 3 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

7. The glass composition according to claim 2 , which has a glass transition temperature of from 300 to 450° C.

8. A glass powder comprising the glass composition according to claim 7 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

9. A glass powder comprising the glass composition according to claim 2 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

10. The glass composition according to claim 1 , further comprising, expressed by mol % in terms of oxide, from 1 to 25% of WO 3 .

11. The glass composition according to claim 10 , which has a glass transition temperature of from 300 to 450° C.

12. A glass powder comprising the glass composition according to claim 11 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

13. A glass powder comprising the glass composition according to claim 10 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

14. The glass composition according to claim 1 , which has a glass transition temperature of from 300 to 450° C.

15. A glass powder comprising the glass composition according to claim 14 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

16. A glass powder comprising the glass composition according to claim 1 , which has D 50 of from 0.3 to 2.0 μm,
wherein D 50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

17. A conductive paste comprising the glass powder according to claim 16 , a conductive metal powder, and an organic vehicle.

18. A solar cell comprising an electrode formed with the conductive paste according to claim 17 .

Assignees

• Agc Inc

Inventors

• Nakakita Yosuke

Classifications

• C03C8/16

  with vehicle or suspending agents, e.g. slip · CPC title

• C03C8/12

  containing titanium or zirconium · CPC title

• C03C8/10

  containing lead · CPC title

• C03C3/247

  containing fluorine and phosphorus · CPC title

• C03C3/21

  containing titanium, zirconium, vanadium, tungsten or molybdenum · CPC title