Method of forming copper/copper alloy interconnection with reduced electromigration

摘要

The electromigration of a Cu or Cu alloy interconnection member is reduced by annealing the seed layer before electroplating or electroless plating the Cu or Cu alloy interconnection member on the seed layer. Embodiments include depositing a Cu or Cu alloy seed layer, annealing at about 100° C. to about 400° C. to increase the grain size of the seed layer and impart a (111)-dominant crystallographic option before plating the Cu or Cu alloy interconnect member thereon the seed layer