Publication
Applied Physics Letters
Paper

Tungsten-platinum alloy Schottky barriers on n-type GaAs

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Abstract

Alloys of tungsten and platinum were studied as a Schottky contact material on n-type GaAs. Schottky barrier heights for two alloy compositions, W 50Pt50 and W80Pt20, were measured by current-voltage, capacitance-voltage, and photoresponse techniques of the barrier heights. The values of the barrier heights from the latter two techniques were 0.90±0.02 eV and did not change with annealing at 350°C for 20 h. However, the value from the I-V technique changed from about 0.6 to 0.7 eV upon annealing. The W50Pt50 alloy was found to be more stable than the W80Pt20 alloy on GaAs.

Date

01 Jan 1985

Publication

Applied Physics Letters

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