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US4375007A
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US
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Silicon solar cells with aluminum-magnesium alloy low resistance contacts
Assignee: EIDP Inc
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Filing: 1981-11-12
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Granted: 1983-02-22
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Expires: 2001-11-12
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
2026-11-06 11:18
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10F; H10F77/00; H10F77/20; H10F77/206; H10F77/211; H10F77/30; H10F77/306; H10F77/311; H10F77/315; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
A silicon solar cell coated with Si 3 N 4 having a P-type and an N-type region and a P-N junction, the N surface of which has been metallized by (1) screen-printing thereon a thick film paste comprising a mixture of finely divided particles of a major amount of a metal powder, a minor amount of glass frits and a small amount of a 50 Al:50 Mg alloy, dispersed in an organic vehicle, and (2) firing the printed surface at a temperature of at least 500° C. to form electrically conductive contacts thereon.
Claim 2
Dependent Claim
93 words
A silicon solar cell coated with Si 3 N 4 having a P-type and an N-type region and a P-N junction, the N surface of which has been metallized by (1) screen-printing thereon a thick film paste comprising a mixture of finely divided particles of a major amount of a metal powder, a minor amount of glass frits and a small amount of a 50 Al:50 Mg alloy, dispersed in an organic vehicle, and (2) firing the printed surface at a temperature of at least 500° C. to form electrically conductive contacts thereon.
Claim 3
Dependent Claim
93 words
A silicon solar cell coated with Si 3 N 4 having a P-type and an N-type region and a P-N junction, the P surface of which has been metallized by (1) screen-printing thereon a thick film paste comprising a mixture of finely divided particles of a major amount of a metal powder, a minor amount of glass frits and a small amount of a 50 Al:50 Mg alloy, dispersed in an organic vehicle, and (2) firing the printed surface at a temperature of at least 600° C. to form electrically conductive contacts thereon.
Claim 4
Dependent Claim
93 words
A silicon solar cell coated with Si 3 N 4 having a P-type and an N-type region and a P-N junction, the P surface of which has been metallized by (1) screen-printing thereon a thick film paste comprising a mixture of finely divided particles of a major amount of a metal powder, a minor amount of glass frits and a small amount of a 50 Al:50 Mg alloy, dispersed in an organic vehicle, and (2) firing the printed surface at a temperature of at least 600° C. to form electrically conductive contacts thereon.
Claim 5
Dependent Claim
16 words
The solar cell of either claim 1 or 2 in which the metal powder is aluminum.
Claim 6
Dependent Claim
17 words
The solar cell of either claim 1 or 2 in which the metal powder is NiSb alloy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |