Photovoltaic module package

Patent metadata

Field	Value
Publication number	US-9701567-B2
Application number	US-201414260625-A
Country	US
Kind code	B2
Filing date	Apr 24, 2014
Priority date	Apr 29, 2013
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

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.

First claim

The invention claimed is:

1. A glass comprising, in mol %:
70-77 SiO 2
4.5-10.5 Al 2 O 3
>0-5 B 2 O 3
3-5 MgO
>0-5 CaO
0-5 SrO
1.8-11.8 Na 2 O
0-3 ZnO
0-6 K 2 O
3<R′O≦12, and
7≦R 2 O≦13,

wherein R′O=MgO+CaO+SrO+BaO, R 2 O=Na 2 O+K 2 O, the glass has a Na release greater than 10 ppm in a buffered aqueous release test, 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., and a strain point greater than 565° C.

2. The glass of claim 1 , wherein the glass has a coefficient of thermal expansion greater than 6 ppm/° C.

3. The glass of claim 1 , wherein the glass has a strain point greater than 585° C.

4. The glass of claim 1 , wherein the glass has a liquidus viscosity greater than 130 kP.

5. The glass of claim 1 , wherein the glass comprises ZnO or K 2 O.

6. The glass of claim 5 , wherein the glass comprises B 2 O 3 and K 2 O.

7. An electronic device comprising the glass of claim 1 .

Assignees

• Corning Inc

Inventors

• Aitken Bruce Gardiner
• Ellison Adam James
• Hamilton James Patrick
• Kiczenski Timothy James

Classifications

• C03C3/085

  containing an oxide of a divalent metal · CPC title

• C03C3/087

  containing calcium oxide, e.g. common sheet or container glass · CPC title

• C03C3/091 Primary

  containing aluminium · CPC title

• Y02E10/541

  CuInSe2 material PV cells · CPC title