ELECTRODEPOSITION BATHS, ELECTRODEPOSITION SYSTEMS AND ELECTRODEPOSITION METHODS

摘要

PROBLEM TO BE SOLVED: To provide new additives and/or new additive blends that are effective in electrodeposition processes that use complex waveforms such as pulse plating, alternating current plating, or reverse-pulse plating.SOLUTION: An electrodeposition bath comprises: at least one of tungsten and molybdenum ionic species; ionic species of a second metal such as nickel; and a brightening agent comprising an alkynyl alkoxy alkane compound. The electrodeposition bath further comprises: a hydroxy alkyne compound or betaine compound as a secondary brightening agent; and a sulfopropylated polyalkoxy naphthol compound or anionic, nonionic or amphoteric fluorocarbon compound as a wetting agent.