Heterostructure field effect device having refractory ohmic cont

Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Field effect transistor

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257194, 257 27, H01L 310328, H01L 310336, H01L 31072, H01L 31109

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active

056061846

ABSTRACT:
A complementary III-V heterostructure field effect device includes the same refractory ohmic material for providing the contacts (117, 119), to both the N-type and P-type devices. Furthermore, the refractory ohmic contacts (117, 119) directly contact the InGaAs channel layer (16) to provide improved ohmic contact, despite the fact that the structure incorporates an advantageous high aluminum composition barrier layer (18) and an advantageous GaAs cap layer (20).

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