Void eliminating seed layer and conductor core integrated circuit interconnects

摘要

An integrated circuit and manufacturing method therefor is provided having a semiconductor substrate with a semiconductor device. A device dielectric layer is formed on the semiconductor substrate and a channel dielectric layer on the device dielectric layer has an opening formed therein. A barrier layer lines the channel opening and a conductor core fills the opening over the barrier layer. A seed layer is disposed between the barrier layer and the conductor core. The seed layer has an associated element which is formed during annealing into an intermetallic compound which has a density lower than the density of the conductor core.