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US4234353A
Expired / Lapsed
US
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Process for preparing photovoltaic cells having increased adhesion of the semi-conducting layer and produced thereby to the conducting layer
Assignee: University of Delaware
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Filing: 1979-04-09
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Granted: 1980-11-18
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Expires: 1999-04-09
Abstract
Abstract Improved adhesion of the semi-conducting layer to the conducting layer in a thin film photovoltaic cell is obtained by incorporating a minor amount of the element or elements of the conducting layer in the semi-conducting layer.
Inventors
- 👤 Lee F. Donaghey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:45
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F77/244; H10F71/00; H10F71/125; H10F77/206; H10F77/211; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/543
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
67 words
In a process for preparing a thin film polycrystalline photovoltaic cell which comprises deposition of a semi-conducting layer on a conducting electrode layer, the improvement which comprises increasing the adhesion of the semi-conducting layer to the conducting layer by incorporating from about 0.01 to about 0.0001 mol of the element or elements of the conducting layer per mol of metallic or major component in the semi-conducting layer.
Claim 2
Dependent Claim
67 words
In a process for preparing a thin film polycrystalline photovoltaic cell which comprises deposition of a semi-conducting layer on a conducting electrode layer, the improvement which comprises increasing the adhesion of the semi-conducting layer to the conducting layer by incorporating from about 0.01 to about 0.0001 mol of the element or elements of the conducting layer per mol of metallic or major component in the semi-conducting layer.
Claim 3
Dependent Claim
16 words
A process according to claim 1 wherein the element is tin, zinc, indium, gallium, or aluminum.
Claim 4
Dependent Claim
11 words
A process according to claim 2 wherein the element is indium.
Claim 5
Dependent Claim
11 words
A process according to claim 2 wherein the element is tin.
Claim 6
Dependent Claim
15 words
A process according to claim 1 wherein the semi-conducting layer is based on cadmium sulfide.
Claim 7
Dependent Claim
54 words
An improved cadmium sulfide photovoltaic cell comprising a thin film polycrystalline cadmium sulfide semi-conducting layer on a conducting electrode layer wherein the cadmium sulfide semi-conducting layer comprises from about 0.01 to about 0.0001 mol of the element or elements of the conducting layer per mol of metallic or major component of the semi-conducting layer.
Claim 8
Dependent Claim
54 words
An improved cadmium sulfide photovoltaic cell comprising a thin film polycrystalline cadmium sulfide semi-conducting layer on a conducting electrode layer wherein the cadmium sulfide semi-conducting layer comprises from about 0.01 to about 0.0001 mol of the element or elements of the conducting layer per mol of metallic or major component of the semi-conducting layer.
Claim 9
Dependent Claim
20 words
An improved cadmium sulfide photovoltaic cell according to claim 6 wherein said element is tin, zinc, indium, gallium, or aluminum.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |