Patent ID: 7253052

Claim:
A method for fabricating an electrode, comprising: forming a recess in an electrically insulative layer to expose a substrate; forming a contact in the recess overlying and in electrical contact with the substrate, wherein the contact includes polysilicon; forming a diffusion barrier layer in the recess and overlying the contact; forming a conductive oxidation resistant layer in the recess and overlying the diffusion barrier layer; removing portions of the conductive oxidation resistant layer lying outside of the recess; removing portions of the insulative layer to expose an upper sidewall of said conductive oxidation resistant layer, said diffusion barrier layer inhibiting diffusion of atoms between said contact and said conductive oxidation resistant layer; and forming a reducing contact resistance layer interposed between said contact and said diffusion barrier layer, said reducing contact resistance layer configured to reduce a contact resistance between said contact and said diffusion barrier layer, wherein the reducing contact resistance layer includes silicide.