Patent ID: 8808525
Filing Date: 2014-08-19
Classification: C25D

Abstract:
1. An electrolyte composition for the galvanic deposition of a copper-containing layer on a substrate surface comprising: a source of copper(II) ions; a primary complexing agent comprising hydantoin, a hydantoin derivative, or a combination thereof; a secondary complexing agent comprising a dicarboxylic acid, a salt of a dicarboxylic acid, a tricarboxylic acid, a salt of a tricarboxylic acid, or any combination thereof; and a metalate, wherein the metalate comprises an element selected from the group consisting of molybdenum, tungsten, vanadium, and combinations thereof and the concentration of the metalate is between 5 mmol/L and 21 mmol/L, and wherein the pH of the composition is between 8 and 13.