Patent ID: 6974531

Claim:
A method for electroplating an electrically conductive material onto a platable resistive metal barrier layer(s) located on a substrate which comprises: contacting the substrate with a plating bath that optionally comprises a super filling additive and supressor, applying a current or voltage across electrodes, wherein the substrates acts as one electrode and a conductor acts as a counter electrode to plate the electrically conductive material on the substrate; changing the current that is applied across the electrodes from an initially small or zero value to a final, higher value corresponding to a desired current density for the total plated area, or changing the voltage that is applied across the electrodes from an initial small or zero value corresponding to an open-circuit potential or a small overpotential to a final larger voltage corresponding to a larger overpotential for deposition thereby plating said electrically conductive material from the edge of the substrate towards its center, and wherein said method is carried out in the absence of a copper seed layer on the barrier layer.