Patent ID: 8247322

Claim:
A method for forming a semiconductor structure, comprising: forming a dielectric layer over a substrate; forming a first non-conductive barrier layer over the dielectric layer; forming at least one opening through the first non-conductive barrier layer and within the dielectric layer, the first non-conductive barrier layer comprising a carbon-containing silicon material layer, a silicon carbide layer or a carbon-doped silicon oxide layer; forming a second non-conductive barrier layer over the first non-conductive barrier layer and within the opening; removing at least a portion of the second non-conductive barrier layer, thereby at least partially exposing a top surface of the first non-conductive barrier layer and a bottom surface of the opening; forming a conductive seed layer with a conductive lower surface directly on and contacting the top surface of the first non-conductive barrier layer and the bottom surface of the opening, the conductive seed layer formed of one of a copper layer, a copper alloy layer, an aluminum layer, an aluminum alloy layer, an aluminum copper layer, and an aluminum silicon copper layer; and forming a conductive layer directly on the conductive seed layer.