US4267398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film photovoltaic cells
Assignee: DELAWARE A CORP OF DE, University of
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Filing: 1979-05-29
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Granted: 1981-05-12
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Expires: 1999-05-29
Abstract
Abstract A solar cell has as its transparent electrical contact a grid made from a non-noble metal by providing a layer of copper oxide between the transparent electrical contact and the absorber-generator.
Inventors
- 👤 Allen Rothwarf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:57
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F77/206; H10F77/211; H10F10/00; H10F10/10; H10F10/16; H10F10/169; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
In a front wall photovoltaic cell of the type comprising an opaque electrical contact, a collector on and in ohmic electrical contact with said opaque electrical contact, an absorber on and in rectifying electrical contact with said collector and forming a junction therewith, a transparent electrical contact in ohmic electrical contact with said absorber, and an antireflection coating, the improvement being said absorber being a copper bearing material, said transparent electrical contact being in the form of a grid made from a material selected from the group consisting of copper, silver, chromium, nickel and their alloys, a diffusion barrier layer deposited on said absorber and providing a continuous layer between said absorber and said grid, and said diffusion barrier layer being of the same material as the material as of said antireflection coating.
Claim 2
Dependent Claim
133 words
In a front wall photovoltaic cell of the type comprising an opaque electrical contact, a collector on and in ohmic electrical contact with said opaque electrical contact, an absorber on and in rectifying electrical contact with said collector and forming a junction therewith, a transparent electrical contact in ohmic electrical contact with said absorber, and an antireflection coating, the improvement being said absorber being a copper bearing material, said transparent electrical contact being in the form of a grid made from a material selected from the group consisting of copper, silver, chromium, nickel and their alloys, a diffusion barrier layer deposited on said absorber and providing a continuous layer between said absorber and said grid, and said diffusion barrier layer being of the same material as the material as of said antireflection coating.
References Cited (Backward Citations)
US3778684A
Cited
USRE29812E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |