US4900370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar battery
Assignee: NEW ENERGY INDUSTRIAL TECHNOLOGY DEVELOPMENT ORGANIZATION
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Filing: 1988-04-22
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Granted: 1990-02-13
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Expires: 2008-04-22
Abstract
Abstract A method of manufacturing a high efficiency solar battery and a high efficiency solar battery comprising a transparent electrode of SnO2, and a semiconductor layer and a metal electrode formed on the transparent electrode in the stated order. The surface unevenness of the transparent electrode is controlled by forming a dual layer structure. The layer adjacent the transparent substrate comprises an undoped SnO2 layer, having crystal grains growing substantially perpendicular to the substrate, producing an uneven surface. A doped layer containing impurities, such as F, Cl, and Sb is deposited over the undoped layer.
Inventors
- 👤 Kazusue Itoga
- 👤 Takeshige Ichimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:35
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/20; H10F77/244; H10F77/70; H10F77/703; H10F77/707; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
65 words
A solar battery comprising a transparent electrode formed on a substrate and a semiconductor film and a metal electrode formed on said transparent electrode in the stated order, characterized in that said transparent electrode comprises an impurity undoped tin oxide layer of a thickness from 0.08 to 0.2 μm formed on said substrate and an impurity doped tin oxide layer formed on said undoped layer.
Claim 2
Dependent Claim
65 words
A solar battery comprising a transparent electrode formed on a substrate and a semiconductor film and a metal electrode formed on said transparent electrode in the stated order, characterized in that said transparent electrode comprises an impurity undoped tin oxide layer of a thickness from 0.08 to 0.2 μm formed on said substrate and an impurity doped tin oxide layer formed on said undoped layer.
Claim 3
Dependent Claim
28 words
The solar battery of claim 1, wherein said impurity in said doped layer is one member selected from the group consisting of fluorine, chlorine, antimony, and mixtures thereof.
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) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |