H - Electricity – 01 – L
Patent
H - Electricity
01
L
356/172
H01L 29/45 (2006.01) H01L 21/285 (2006.01)
Patent
CA 1124410
i CHANG,C.C. 4-5-1-1-2 SEMICONDUCTOR DEVICES WITH AN OHMIC CONTACT TO N-TYPE GROUP III-V SEMICONDUCTORS Abstract of the Disclosure A semiconductor device with a low resistance ohmic contact, strongly adherent to the n-type surface of a body (11) of Group III-V compound semiconductor is obtained by a process including the sequential deposition of gold (13), tin (14) and gold (15) at a surface temperature of less than 200 degrees C followed by a heat treatment in a nonoxidizing atmosphere. This process has shown particular advantage when applied to aluminum containing compound semiconductors (e.g., gallium aluminum arsenide). For such use an initial deposition of aluminum (16) has proven particularly successful in producing consistently low resistance ohmic contacts. The invention has been used in the production of light emitting diodes.
327325
Chang Chuan C.
Ermanis Felix
Mccoy Robert J.
Nakahara Shohei
Sheng Tan T.
Kirby Eades Gale Baker
Western Electric Company Incorporated
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