US3573114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent junctions by codoping with more than one element
Assignee: United States Department of the Army
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Filing: 1969-01-09
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Granted: 1971-03-30
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Expires: 1989-01-09
Abstract
Abstract THIS INVENTION RELATES TO A METHOD OF FABRICATING A LIGHT EMITTING SEMICONDUCTOR JUNCTION DEVICE. THE METHOD ENCOMPASSES DIFFUSING ZINC AND CADMIUM TOGETHER INTO N-TYPE GALLIUM-ARSENIDE WAFERS THAT ARE SEALED IN A SILICA TUBE OR AMPULE WITH APPROXIMATELY 5 MG. CD3AS2 OR CDAS2 PLUS APPROXIMATELY 5 MG. OF ZNAS2. FOR DIODES FABRICATED BY THIS METHOD OF CO-DIFFUSION, THE SILICA TUBE IS HEATED TO 750*C. FOR 4 HOURS THEN TO 850*C. FOR .75 HOUR. FOR LASERS FABRICATED BY THIS CO-DIFFUSION, THE TUBE IS HEATED TO 750*C. FOR 16 HOURS AND THEN TO 850*C. FOR 1.25 HOURS.
Inventors
- 👤 John C Marinace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:04
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H01; H01S; H01S5/00; H01S5/30; H01S5/32; Y; Y10; Y10S; Y10S148/00; Y10S148/151
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |