Patent ID: 6426289
Filing Date: 2002-07-30
Classification: H01L

Abstract:
A method of fabricating a conductor layer and associated barrier layer, said method comprising:forming an opening extending through a multilayer dielectric comprising a top layer comprising a first dielectric material, an intermediate layer comprising a second dielectric material and a bottommost layer comprising a third dielectric material, said opening extending through said top and intermediate layers and through at least a portion of said bottommost layer; depositing a plating layer over said top dielectric layer and at the bottom of said opening; removing said top dielectric layer and a portion of said plating layer which is deposited on said top dielectric layer; depositing a conductor layer over said plating layer; doping an upper surface of said conductor layer with a dopant; and removing said intermediate dielectric layer and a portion of said plating layer which extends above said bottommost dielectric layer.