Patent ID: 6664633
Filing Date: 2003-12-16
Classification: C25D,H01L

Abstract:
A method for depositing a metal conduction layer in a feature of a substrate, the method comprising the steps of:forming the feature in the substrate, the feature having a width dimension of less than about one tenth of a micron, depositing a barrier layer on the substrate, depositing a seed layer on the barrier layer, the seed layer having a thickness of less than about three hundred angstroms to provide a substantially continuous seed layer, the seed layer forming a surface oxide layer after the seed layer is formed, and electroplating the conduction layer onto the surface oxide layer of the seed layer from an alkaline electroplating bath, the electroplating bath containing an electroplating solution selected from the group consisting of a pyrophosphate solution, an alkaline cyanide solution and an alkaline metal ion complexing solution.