US3684930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ohmic contact for group iii-v p-types semiconductors
Assignee: General Electric Co
•
Filing: 1970-12-28
•
Granted: 1972-08-15
•
Expires: 1990-12-28
Abstract
Abstract A combination of gold-germanium or gold-silicon alloy and zinc or other metallic Group II element provides an electrical contact and low-temperature bonding material for p-type semiconductors of Group III-V such as gallium arsenide.
Inventors
- 👤 Neil E Collins
- 👤 Ira E Halt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:54
CPC Classifications
H; H10; H10D; H10D64/00; H10D64/01; H10D64/011; H10D64/0116; H10W; H10W72/00; H10W72/30; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336; H10W90/00; H10W90/701; H10W90/751; H10W90/753; H10W90/754; Y; Y10; Y10S; Y10S148/00; Y10S148/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
32 words
A contact as claimed in claim 1, in which said alloy is a gold-germanium alloy having an amount of germanium that is about 5 to 25 percent by weight of the alloy.
Claim 2
Dependent Claim
15 words
A contact as claimed in claim 1, in which said alloy is a gold-germanium eutectic.
Claim 3
Dependent Claim
32 words
A contact as claimed in claim 1, in which said alloy is a gold-silicon alloy having an amount of silicon that is about 4 to 10 percent by weight of the alloy.
Claim 4
Dependent Claim
15 words
A contact as claimed in claim 1, in which said alloy is a gold-silicon eutectic.
Claim 5
Dependent Claim
16 words
A contact as claimed in claim 1, in which said Group II metallic element is zinc.
Claim 6
Dependent Claim
58 words
A contact as claimed in claim 6, in which said alloy is a gold-germanium eutectic, and in which the amount of said zinc is about 1 to 15 percent by weight of said eutectic alloy. 8 A contact as claimed in claim 1, in which said Group III-V material is gallium arsenide, gallium phosphide, or gallium arsenide phosphide.
Claim 7
Dependent Claim
48 words
A solid-state lamp comprising a Group III-V material having a p-n junction at the interface of a p-type region and an n-type region, and an ohmic contact at the surface of said p-type region comprising a combination of gold-germanium or gold-silicon alloy and a Group II metallic element.
Claim 8
Dependent Claim
32 words
A lamp as claimed in claim 9, in which said alloy is a gold-germanium alloy having an amount of germanium that is about 5 to 25 percent by weight of the alloy.
Claim 9
Dependent Claim
15 words
A lamp as claimed in claim 9, in which said alloy is a gold-germanium eutectic.
Claim 10
Dependent Claim
32 words
A lamp as claimed in claim 9, in which said alloy is a gold-silicon alloy having an amount of silicon that is about 4 to 10 percent by weight of the alloy.
Claim 11
Dependent Claim
15 words
A lamp as claimed in claim 9, in which said alloy is a gold-silicon eutectic.
Claim 12
Dependent Claim
16 words
A lamp as claimed in claim 9, in which said Group II metallic element is zinc.
Claim 13
Dependent Claim
35 words
A contact as claimed in claim 14, in which said alloy is a gold-germanium eutectic, and in which the amount of said zinc is about 1 to 15 percent by weight of said eutectic alloy.
Claim 14
Dependent Claim
22 words
A lamp as claimed in claim 9, in which said Group III-V material is gallium arsenide, gallium phosphide, or gallium arsenide phosphide.
References Cited (Backward Citations)
US2995475A
Cited
US3597665A
Cited
US3525146A
Cited
US3527946A
Cited
US3544854A
Cited
US3562667A
Cited
US3593070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |