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Uniform Tetragonal WSi2 Layers Formed by RTA
Published online by Cambridge University Press: 28 February 2011
Abstract
Thin films of tungsten silicide with resistivities of 30 – 35 μΩ-cm have been formed by sputter depositing 71 nm of W metal onto (100) oriented, 5 Ω-cm, p-type silicon wafers that were etched in BOE 500 solution. The samples were fast radiatively processed in an RTA system under high vacuum for time anneals ranging from 15 – 50 seconds at a temperature of ∼ 1100°C. The inevitable oxide barrier at the interface is shown to decrease with increasing RTA time.
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