Wässriges saures Bad und Verfahren zum elektrolytischen Abschneiden von Kupfer

摘要

Aqueous acid bath comprises at least a copper-ion source, at least an acid-ion source, at least a brightening compound and at least a leveling-compound comprising unfunctionalized peptides, or synthetically produced and functionalized-amino acids and -peptides. An independent claim is included for a process for electrolytic deposition of copper on a workpiece, comprising providing the aqueous acid bath for electrolytic deposition of copper and at least an anode, contacting the workpiece and the anode, with the aqueous acid bath, and generating an electrical current flow between the workpiece and the anode, where the copper is deposited on the workpiece.