Silicide phase control by confinement
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United States of America Patent
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Jan 9, 2018
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app pub date -
Aug 18, 2016
filing date -
Sep 25, 2015
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Abstract
Implementations described herein generally relate to methods of selective deposition of metal silicides. More specifically, implementations described herein generally relate to methods of forming nickel silicide nanowires for semiconductor applications. In one implementation, a method of processing a substrate is provided. The method comprises forming a silicon-containing layer on a surface of a substrate, forming a metal-containing layer comprising a transition metal on the silicon-containing layer, forming a confinement layer on exposed surfaces of the metal-containing layer and annealing the substrate at a temperature of less than 400 degrees Celsius to form a metal silicide layer from the silicon-containing layer and the metal-containing layer, wherein the confinement layer inhibits formation of metal-rich metal silicide phases.
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