Patent ID: 6936925
Filing Date: 2005-08-30
Classification: C25D,H01L

Abstract:
1. A semiconductor device, having an interim reduced-oxygen copper-zinc (Cu—Zn) alloy thin film formed on a copper (Cu) surface by electroplating the Cu surface in a chemical solution, fabricated by a method comprising the steps of: providing a semiconductor substrate having a Cu surface formed in a via; providing a chemical solution; electroplating the Cu surface in the chemical solution, thereby forming an interim Cu—Zn alloy thin film on the Cu surface; rinsing the interim Cu—Zn alloy thin film in a solvent; drying the interim Cu—Zn alloy thin film under a gaseous flow; annealing the interim Cu—Zn alloy thin film formed on the Cu surface, thereby forming an interim reduced-oxygen Cu—Zn alloy thin film; filling the via with Cu on the interim reduced-oxygen Cu—Zn alloy thin film, thereby forming a Cu-fill; annealing the Cu-fill, the interim reduced-oxygen Cu—Zn alloy thin film and the Cu surface; planarizing the Cu-fill, the interim reduced-oxygen Cu—Zn alloy thin film and the Cu surface, thereby forming a dual-inlaid interconnect structure; and completing formation of the semiconductor device.