Patent US4156622A successfully refreshed from Google Patents.
US4156622A
Expired / Lapsed
US
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Tantalum oxide antireflective coating and method of forming same
Assignee: BP Solar International LLC
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Filing: 1976-11-10
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Granted: 1979-05-29
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Expires: 1996-11-10
Abstract
Abstract A silicon solar energy cell having an antireflective coating on its light impinging surface. The coating consists essentially of a suboxide of tantalum having the generic formula Ta 2 O y , in which y is a number between about 2.5 and 4.8 on an atomic ratio basis.
Inventors
- 👤 Joseph Lindmayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:01
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: 6
Claim 1
Independent Claim
86 words
A solar energy cell comprising a body of silicon having opposed surfaces, one of which is adapted for the impingement of light thereon, and a photovoltaic junction formed inwardly of said surfaces and dividing said body of silicon into zones of opposite conductivity types, and an antireflective coating on said light impinging surface, said coating consisting essentially of a suboxide of tantalum having the formula Ta 2 O Y , in which Y is a number between about 2.5 and 4.8 on an atomic ratio basis.
Claim 2
Dependent Claim
86 words
A solar energy cell comprising a body of silicon having opposed surfaces, one of which is adapted for the impingement of light thereon, and a photovoltaic junction formed inwardly of said surfaces and dividing said body of silicon into zones of opposite conductivity types, and an antireflective coating on said light impinging surface, said coating consisting essentially of a suboxide of tantalum having the formula Ta 2 O Y , in which Y is a number between about 2.5 and 4.8 on an atomic ratio basis.
Claim 3
Dependent Claim
20 words
A solar energy cell as claimed in claim 1, in which Y is a number between about 3.3 and 4.5.
Claim 4
Dependent Claim
21 words
A solar energy cell as claimed in claim 1, in which the thickness of the antireflective coating is about 600 A.
Claim 5
Dependent Claim
15 words
A solar energy cell as claimed in claim 1, in which Y is about 4.3.
Claim 6
Dependent Claim
24 words
A solar energy cell as claimed in claim 1, in which the thickness of the antireflective coating is between about 600 to 650 A.
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) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |