US3703671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: ROBERT H SAUL
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Filing: 1972-03-10
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Granted: 1972-11-21
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Expires: 1992-03-10
Abstract
Abstract The efficiency of gallium phosphide electroluminescent devices, emitting light in the red region of the spectrum, produced by the liquid phase epitaxial deposition of p-type material on an n-type substrate depends in part on the concentration of zinc and oxygen in the gallium solvent used in the deposition and on the heat treatment after deposition. It has been found that inclusion in the gallium of 0.03 mole percent zinc and 0.35 mole percent Ga2O3 lead to the production of mounted devices of greater than 6 percent photon efficiency when junction formation is followed by a suitable heat treating schedule.
Inventors
- 👤 Robert H Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:03
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/822; H10H20/824; H10P; H10P14/00; H10P14/20; H10P14/26; H10P14/263; H10P14/265; H10P14/29; H10P14/2901; H10P14/2907; H10P14/2909; H10P14/34; H10P14/3402; H10P14/3414; H10P14/3418; H10P14/3438; H10P14/3441; H10P14/3442; H10P14/3444; H10P14/3446; Y; Y10; Y10S; Y10S148/00; Y10S148/065; Y10S148/119; Y10S252/00; Y10S252/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
An electroluminescent device composed principally of GaP containing at least one p-n junction characterized in that the material within the first 10 microns of the p side of the said p-n junction contains at least an average concentration of between 1 X 1017 per cubic centimeter and 9 X 1017 per cubic centimeter of O donors and a concentration of between 2 X 1017 per cubic centimeter and 1 X 1018 per cubic centimeter of an acceptor selected from the group Zn and Cd.
Claim 2
Dependent Claim
84 words
An electroluminescent device composed principally of GaP containing at least one p-n junction characterized in that the material within the first 10 microns of the p side of the said p-n junction contains at least an average concentration of between 1 X 1017 per cubic centimeter and 9 X 1017 per cubic centimeter of O donors and a concentration of between 2 X 1017 per cubic centimeter and 1 X 1018 per cubic centimeter of an acceptor selected from the group Zn and Cd.
References Cited (Backward Citations)
US3555283A
Cited
US3365630A
Cited
US3462320A
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US3470038A
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US3647579A
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US3592704A
Cited
US3619304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |