Copper electroplating baths and electroplating methods capable of electroplating megasized photoresist defined features

摘要

Copper electroplating baths and methods enable the plating of photoresist defined megafeatures at high current densities which have substantially uniform morphology and reduced nodule development. The copper electroplating baths include a mixture of heterocyclic nitrogen containing copolymers which provide megafeatures having a good % TIR and % WID balance.