US3845494A
Expired / Lapsed
US
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HgTe-CdTe PHOTOVOLTAIC DETECTORS
Assignee: Societe Anonyme de Telecommunications SAT
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Filing: 1973-01-12
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Granted: 1974-10-29
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Expires: 1993-01-12
Abstract
Abstract An HgTe-CdTe photovoltaic detector comprising an HgTe-CdTe semiconductor plate having two different doped regions separated by a junction, wherein said plate is coated, at least on the free faces of the plate, with a continuous film of a material which is impervious to mercury and does not effect, or possibly even enhances, the detecting properties of the crystals constituting the detector.
Inventors
- 👤 J Ameurlaine
- 👤 Solal G Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:27
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/22; H10F30/221; H10F30/2212; H10W; H10W72/00; H10W72/50; H10W72/531; H10W72/536
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
AN HGTE-CDTE PHOTOVOLTAIC DETECTOR COMPRISING AN HGTE-CDTE SEMICONDUCTOR PLATE HAVING TWO DIFFERENT DOPED REGIONS SEPARATED BY A JUNCTION, SAID PLATE BEING COMPLETELY COATED WITH A CONTINUOUS FILM OF A METALLIC SULPHIDE OR SELENIDE FOR PREVENTING OUTWARD DIFFUSION OF MERCURY VAPOR FROM SAID PLATE.
Claim 2
Dependent Claim
43 words
AN HGTE-CDTE PHOTOVOLTAIC DETECTOR COMPRISING AN HGTE-CDTE SEMICONDUCTOR PLATE HAVING TWO DIFFERENT DOPED REGIONS SEPARATED BY A JUNCTION, SAID PLATE BEING COMPLETELY COATED WITH A CONTINUOUS FILM OF A METALLIC SULPHIDE OR SELENIDE FOR PREVENTING OUTWARD DIFFUSION OF MERCURY VAPOR FROM SAID PLATE.
Claim 3
Dependent Claim
19 words
A photovoltaic detector according to claim 1, wherein the coating film is at least partly constituted by zinc sulphide.
Claim 4
Dependent Claim
19 words
A photovoltaic detector according to claim 1, wherein the coating film is at least partly constituted by zinc selenide.
Claim 5
Dependent Claim
19 words
A photovoltaic detector according to claim 1, wherein the coating film is at least partly constituted by arsenic pentaselenide.
Claim 6
Dependent Claim
122 words
A photovoltaic detector according to claim 1, wherein the semi-conductor plate comprises an upper n doped region and a lower p doped region superimposed to form an interface junction, the upper face of the n doped region being the sensitive detector face, an electrode extending from the center of the upper face and spot-soldered thereto with gold, the lower face of the p doped region being entirely covered with gold to which an electrode is connected, a difference of potential being created between the electrodes under the effect of infrared radiation impinging on said upper face, and said plate being completely coated with a continuous film of a metallic sulphide or selenide for preventing outward diffusion of mercury vapor from said plate.
Claim 7
Dependent Claim
55 words
In a HgTe-CdTe photovoltaic detector comprising an HgTe-CdTe semiconductor plate having two different doped regions separated by a junction, said plate being completely coated with a continuous layer of at least one compound of the group consisting of zinc sulphide, zinc selenide and arsenic pentaselenide for preventing outward diffusion of mercury vapor from said plate.
Claim 8
Dependent Claim
55 words
In a HgTe-CdTe photovoltaic detector comprising an HgTe-CdTe semiconductor plate having two different doped regions separated by a junction, said plate being completely coated with a continuous layer of at least one compound of the group consisting of zinc sulphide, zinc selenide and arsenic pentaselenide for preventing outward diffusion of mercury vapor from said plate.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |