Patent ID: 8614107
Filing Date: 2013-12-24
Classification: H01L

Abstract:
1. A structure for a semiconductor device, the structure comprising: a nickel-tungsten silicide formed on a conductive region of a semiconductor substrate; a dielectric layer present on the semiconductor substrate; and a tungsten contact electrically coupled to the conductive region and formed through the dielectric layer and separated from the nickel-tungsten silicide and at least a portion of a sidewall of the dielectric layer by a tungsten-containing layer, wherein the tungsten-containing layer is in direct contact with the portion of the sidewall and the nickel-tungsten silicide, and wherein the nickel-tungsten silicide is formed via diffusion of tungsten from a metal layer that includes at least five atomic percent (5 at. %) tungsten and no more than thirty atomic percent (30 at. %) tungsten.