US4252573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collector grid for CdS/CuS photovoltaic cells
Assignee: University of Delaware
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Filing: 1975-06-06
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Granted: 1981-02-24
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Expires: 1995-06-06
Abstract
Abstract By increasing the line spacing and the width of the grid wires of cadmium sulfide/copper sulfide photovoltaic cells, an easier to manufacture, low cost cell having a higher conversion efficiency is obtained. Seven to eight grid wires per inch have been found to be particularly desirable in achieving these end results.
Inventors
- 👤 Karl W. Boer
- 👤 Norman S. Freedman
- 👤 Henry C. Hadley, Jr.
- 👤 James Phillips
- 👤 Manuel Ruiz-Urbieta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:55
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F77/206; H10F77/211; H10F77/215; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
In a thin film photovoltaic cell with a body having a pair of thin films forming a photovoltaic barrier junction, one of said films being made of cadmium sulfide and the other of said films being made of copper sulfide, each of said films having its own electrode in ohmic contact therewith, the electrode for said other film comprising: a plurality of electrically conductive collector strips; means ohmically interconnected to said collector strips; and said collector strips being parallely spaced between two and thirty lines per inch, equally apart, and dimensioned to permit at least 90% of incident light to pass to said thin films, said ohmically interconnected means comprising connector stips that are parallel to each other and are equally spaced at about ten lines per inch on said other film and transversely to said collector strips.
Claim 2
Dependent Claim
138 words
In a thin film photovoltaic cell with a body having a pair of thin films forming a photovoltaic barrier junction, one of said films being made of cadmium sulfide and the other of said films being made of copper sulfide, each of said films having its own electrode in ohmic contact therewith, the electrode for said other film comprising: a plurality of electrically conductive collector strips; means ohmically interconnected to said collector strips; and said collector strips being parallely spaced between two and thirty lines per inch, equally apart, and dimensioned to permit at least 90% of incident light to pass to said thin films, said ohmically interconnected means comprising connector stips that are parallel to each other and are equally spaced at about ten lines per inch on said other film and transversely to said collector strips.
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |