US3615877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photovoltaic cell and its method of manufacturing
Assignee: Individual
•
Filing: 1969-12-30
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Granted: 1971-10-26
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Expires: 1989-12-30
Abstract
Abstract A method of making a photovoltaic cell employing powdered polycrystalline photoelectric material, the method comprising, forming at least one electrode on a photoelectric layer and electroplating a P-type determining metal, such as copper, on said electrode at least partially through the photoelectric layer whereby the portion of said photoelectric layer subjected to said electroplating process is converted to P-type by the metal ions proceeding to the electrode, forming thereby a PN junction therearound, and a photovoltaic cell thus formed.
Inventors
- 👤 Kazuo Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:46
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F10/16; H10F99/00; H10F71/00; H10F71/135; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/064; Y10S148/153
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
30 words
A method of making a photovoltaic cell according to claim 1, wherein said photoelectric material is selected from the group consisting of cadmium sulfide, cadmium selenide and their solid solution.
Claim 2
Dependent Claim
49 words
A method of making a photovoltaic cell according to claim 1, wherein said metal is copper and the cell assembly is heated in an atmosphere containing 1.5 to 20 percent oxygen or sulfur so that copper diffuses into said sintered film to convert the same into a P-type layer.
Claim 3
Dependent Claim
29 words
A method of making a photovoltaic cell according to claim 1, wherein the cell assembly is further subjected to an aging treatment by applying electric power and heat thereto.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |