Patent ID: 8742581
Filing Date: 2014-06-03
Classification: H01L

Abstract:
1. An interconnect structure comprising: an interconnect dielectric material comprising at least one opening located therein, wherein said interconnect dielectric material has nitrogen enriched dielectric surfaces within said at least one opening and spanning an entirety of an uppermost horizontal surface of said interconnect dielectric material; and a conductive material located within the at least one opening, said conductive material is separated from the interconnect dielectric material by a diffusion barrier comprising at least an in-situ formed metal nitride liner and an overlying metal diffusion barrier liner, wherein an uppermost surface of said conductive material, uppermost surfaces of said in-situ formed metal nitride liner and uppermost surfaces of said metal diffusion barrier liner are coplanar with an uppermost surface of said nitrogen enriched dielectric surface spanning the entirety of the uppermost horizontal surface of said interconnect dielectric material.