US4246043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yttrium oxide antireflective coating for solar cells
Assignee: BP Solar International LLC
•
Filing: 1979-12-03
•
Granted: 1981-01-20
•
Expires: 1999-12-03
Abstract
Abstract Yttrium oxide is used as an antireflective coating for photovoltaic cells.
Inventors
- 👤 Joseph Lindmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:05
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/30; H10F77/306; H10F77/311; H10F77/315; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
42 words
A photovoltaic cell comprising a body of host material having a major surface adapted for the reception of light energy impinging thereon and conversion of such energy into electrical energy, and an antireflective coating on said surface, said coating containing yttrium oxide.
Claim 2
Dependent Claim
42 words
A photovoltaic cell comprising a body of host material having a major surface adapted for the reception of light energy impinging thereon and conversion of such energy into electrical energy, and an antireflective coating on said surface, said coating containing yttrium oxide.
Claim 3
Dependent Claim
23 words
A photovoltaic cell as claimed in claim 1, in which the thickness of said antireflective coating is between about 550 and 650 A.
Claim 4
Dependent Claim
20 words
A photovoltaic cell as claimed in claim 1, in which the thickness of said antireflective coating is about 600 A.
Claim 5
Dependent Claim
18 words
A photovoltaic cell as claimed in claim 1, in which said antireflective coating consists entirely of yttrium oxide.
Claim 6
Dependent Claim
16 words
A photovoltaic cell as claimed in claim 1, in which said host material is monocrystalline silicon.
Claim 7
Dependent Claim
16 words
A photovoltaic cell as claimed in claim 1, in which said host material is semicrystalline silicon.
Claim 8
Dependent Claim
16 words
A photovoltaic cell as claimed in claim 1, in which said coating also contains tantalum pentoxide.
Claim 9
Dependent Claim
21 words
A photovoltaic cell as claimed in claim 1, in which said coating is overlaid by another antireflective coating containing tantalum pentoxide.
Claim 10
Dependent Claim
26 words
A photovoltaic cell as claimed in claim 1, in which said coating is formed by depositing elemental yttrium on said surface and then oxidizing said yttrium.
Claim 11
Dependent Claim
32 words
A photovoltaic cell as claimed in claim 1, in which said coating is formed by depositing a mixture of elemental yttrium and yttrium oxide on said surface and then oxidizing said mixture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |