Patent ID: 9553157
Date: 2017-01-24
CPC Classifications: H01L

Claim:
1. A contact, comprising: a layer of dielectric material on a silicon-containing region of a semiconductor substrate, the layer of dielectric material having an opening that extends through the layer and that exposes the silicon-containing region; a metal silicide layer on the exposed portion of the silicon-containing region, the metal silicide layer including at least one first type of metal selected from the group consisting of titanium, tantalum, cobalt, ruthenium, rhenium, nickel, hafnium, platinum, and tungsten; a metal stack on the metal silicide layer, the metal stack including a liner film on the metal stack and on the layer of dielectric material; and a fill metal on the liner film, the fill metal being selected from the group consisting of tungsten, cobalt, nickel, titanium, tantalum, copper, silver and alloys thereof.