Patent ID: 7696042

Claim:
A method of forming a capacitor structure during semiconductor fabrication comprising the steps of: forming a recessed region into an insulative material, said recessed region having sidewalls and a base, said base providing access to an underlying conductive plug connected to a source/drain region of a transistor; forming a nickel layer on said sidewalls and on said base of said recessed region such that said nickel layer is in contact with said underlying conductive plug, wherein a thickness of said nickel layer formed at said base is substantially greater than a thickness of said nickel formed on said sidewalls; forming conductive hemispherical grained polysilicon material on said nickel layer; converting said hemispherical polysilicon material and said nickel layer at said base to a nickel silicide material; forming a titanium nitride material overlying said conductive hemispherical grained polysilicon material and said nickel silicide material to form a first capacitor plate; forming a capacitor dielectric overlying said titanium nitride material; and forming a conductive polysilicon material overlying said capacitor dielectric to form a second capacitor plate.