Patent ID: 8268154

Claim:
A method of metal deposition, comprising: (a) providing a work piece including field regions and recessed features; (b) causing a deposition accelerator to become selectively attached to surfaces of the recessed features, including: (i) causing the deposition accelerator to become attached to the field regions and the surfaces of the recessed features; and (ii) selectively removing the deposition accelerator from the field regions with at least an electrochemical process that is performed without performing substantial metal deposition on the field regions and surfaces of the recessed features, including bringing the work piece into close proximity with an electric field-imposing member such that the accelerator is selectively removed from the field regions in close proximity with the member and that accelerator more remote from the member on the surfaces of the recessed features remains attached; and (c) after (b) is at least partially complete, depositing a metal onto the field regions and the surfaces of the recessed features, wherein the deposition accelerator remaining attached to the surfaces of the recessed features increases the rate of metal deposition onto the surfaces of the recessed features relative to the rate of metal deposition onto the field regions, and wherein the depositing the metal continues until the recessed features are filled and the metal is protruding in regions of the recessed features relative to the field regions.