US4347262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-magnesium alloys in low resistance contacts to silicon
Assignee: EIDP Inc
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Filing: 1980-11-26
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Granted: 1982-08-31
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Expires: 2000-11-26
Abstract
Abstract An Al-Mg alloy is mixed with a Ni-Sb alloy or Al, in powder form, to form a thick-film metallizing paste useful for making low resistance electrically conductive contacts to a silicon solar cell coated with Si3N4.
Inventors
- 👤 Sanford M. Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F77/206; H10F77/211; H10P; H10P14/00; H10P14/40; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A thick-film metallizing paste for use in providing low resistance electrically conductive contacts to a silicon solar cell coated with Si 3 N 4 , said paste comprising an organic vehicle containing, in particle form, a mixture of a major amount of a metal powder, a minor amount of finely divided glass frits, and a small amount of a 50 Al:50 Mg alloy.
Claim 2
Dependent Claim
63 words
A thick-film metallizing paste for use in providing low resistance electrically conductive contacts to a silicon solar cell coated with Si 3 N 4 , said paste comprising an organic vehicle containing, in particle form, a mixture of a major amount of a metal powder, a minor amount of finely divided glass frits, and a small amount of a 50 Al:50 Mg alloy.
Claim 3
Dependent Claim
13 words
The metallizing paste of claim 1 wherein the metal powder is Al powder.
Claim 4
Dependent Claim
59 words
A process of metallizing a solar cell having an Si 3 N 4 coating, a P-type and an N-type region, and a P-N junction, which comprises screen-printing the P surface of said cell with the metallizing paste of claim 2, and firing the printed surface at a temperature of at least 600° C. to form electrically conductive contacts thereon.
Claim 5
Dependent Claim
17 words
The metallizing paste of claim 1 wherein the metal powder is a powder of a NiSb alloy.
Claim 6
Dependent Claim
60 words
A process of metallizing a silicon solar cell coated with Si 3 N 4 , a P-type and an N-type region, and a P-N junction, which comprises screen-printing the N surface of said cell with the metallizing paste of claim 4 and firing the printed surface at a temperature of at least 500° C. to form electrically conductive contacts thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |