US3582654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detector utilizing lateral photovaltaic effect with epitaxial resistance layer
Assignee: US Philips Corp
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Filing: 1968-10-02
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Granted: 1971-06-01
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Expires: 1988-10-02
Abstract
Abstract A radiation detector utilizing the lateral photovoltaic effect to establish the point of impact of incident radiation is described. On the back of the monocrystalline semiconductor is provided an epitaxial layer of lower resistance to which two contacts are made. By employing a separate epitaxial layer resistor instead of the detector body resistance, a number of advantages are obtained.
Inventors
- 👤 Johannes Meuleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:33
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/29; H10F30/298; G; G01; G01T; G01T1/00; G01T1/29; G01T1/2914; G01T1/2921; G01T1/2928; H10W; H10W74/00; H10W74/40; H10W74/43
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A detector as set forth in claim 1 wherein the body is of n conductivity and the epitaxial layer is of n+ conductivity, the body being arranged to receive the radiation to be detected on the surface containing the first electrode, said first electrode being transparent.
Claim 2
Dependent Claim
22 words
A detector as set forth in claim 1 wherein the thickness of the epitaxial layer is smaller than that of the body.
Claim 3
Dependent Claim
22 words
A detector as set forth in claim 1 wherein the thickness of the epitaxial layer is larger than that of the body.
Claim 4
Dependent Claim
27 words
A detector as set forth in claim 1 wherein the plate resistivity is at least 300 ohm-cm, and the epitaxial layer resistivity is at most 10 ohm-cm.
Claim 5
Dependent Claim
40 words
A detector as set forth in claim 1 and including means for applying a reverse voltage across the rectifying junction such that the depletion layer fills substantially entirely the space in the body between the junction and the epitaxial layer.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |