Abstract
ABSTRACTGaAs (100) substrates were subjected to UV-ozone, wet chemical, and thermal treatments prior to deposition of Ni contact structures. The use of UV-ozone showed marked improvement in the electrical characteristics compared to the wet chemical and thermal treatments alone. The major effect of UV-ozone is the nondestructive removal of carbonous contaminants. Results of C-V and I-V barrier height measurements on Ni contact structures fabricated on the treated surfaces are presented.
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