Photovoltaic module package

• US 10,407,338 B2
• Filed: 06/07/2017
• Issued: 09/10/2019
• Est. Priority Date: 04/29/2013
• Status: Active Grant

• Current Assignee: Corning Incorporated
• Original Assignee: Corning Incorporated
• Inventors: Aitken, Bruce Gardiner, Ellison, Adam James, Hamilton, James Patrick, Kiczenski, Timothy James
• Primary Examiner(s): Bolden, Elizabeth A.
• Application Number:
  US15/616,113
• Publication Number:
  US 20170267573A1
• Time in Patent Office: 825 Days
• CPC Class Codes: C03C 3/085 containing an oxide of a divalent metal
• CPC Class Codes: C03C 3/087 containing calcium oxide, e.g. common sheet or container glass
• CPC Class Codes: C03C 3/091 containing aluminium
• CPC Class Codes: Y02E 10/541 CuInSe2 material PV cells

Abstract

Fusion-formable sodium-containing aluminosilicate and boroaluminosilicate glasses are described. The glasses are particularly useful for controlled release of sodium—useful in semiconductor applications, such as thin film photovoltaics where the sodium required to optimize cell efficiency is to be derived from the substrate glass.

Claims

1. A glass comprising, in mol %:

65-80 SiO₂

3-13 Al₂O₃

0-5.5 B₂O₃

>

0-10 MgO

0-10 CaO

0-10 SrO

1-9 Na₂O;

>

0 and <

3.5 K₂O;

and 1≤

R′

O≤

15, wherein R′

O=MgO+CaO+SrO+BaO.

2. The glass of claim 1, wherein and 2≤

R₂O≤

13.1, wherein R₂O=K₂O+Na₂O.

3. The glass of claim 2, wherein the glass comprises in mol %:

70-77 SiO₂

4.5-10.5 Al₂O₃

>

0-5 B₂O₃

3-5 MgO

>

0-5 CaO

0-5 SrO

and wherein 2.3≤

R₂O≤

13.1 and 4.5≤

R′

O≤

12.

4. The glass of claim 1, wherein the glass comprises in mol %:

65-80 SiO₂

3-13 Al₂O₃

0-5 B₂O₃

2-7 MgO

>

0-7 CaO

0-6 SrO.

5. The electronic device comprising the glass of claim 1.

6. The electronic device of claim 5, wherein the device comprises a photovoltaic module.

7. The glass of claim 1, wherein the glass has a Na release greater than 10 ppm in a buffered aqueous release test and a total Na+K release of less than 50 ppm in a buffered aqueous release test.

8. The glass of claim 7, wherein the glass has a T^margin=T^breakdown−

T^35kp>

10°

C.

9. The glass of claim 7, wherein the Na+K release is less than 30 ppm.

10. The glass of claim 7, wherein the glass has a coefficient of thermal expansion greater than 6 ppm/°

C.

11. The glass of claim 7, wherein the glass has a strain point greater than 565°

C.

12. The glass of claim 11, wherein the glass has a strain point greater than 585°

C.

13. The glass of claim 7, wherein the glass has a liquidus viscosity greater than 130 kP.

14. An electronic device comprising the glass of claim 7.

15. The electronic device of claim 14, wherein the device comprises a photovoltaic module.

16. A glass comprising, in mol %:

70-77 SiO₂

4.5-10.5 Al₂O₃

>

0-5 B₂O₃

3-5 MgO

>

0-5 CaO

>

0-5 SrO

1.8-9 Na₂O

between 0 and 3.5 K₂O

wherein 2.3≤

R₂O≤

13.1 and 4.5≤

R′

O≤

12, and the glass has a Na release greater than 10 ppm in a buffered aqueous release test and a total Na+K release of less than 30 ppm in a buffered aqueous release test, a T^margin=T^breakdown−

T^35kp>

10°

C., a coefficient of thermal expansion greater than 6 ppm/°

C., and a strain point greater than 565°

C.

17. The glass of claim 16, wherein the glass has a liquidus viscosity of greater than 130 kP.