Patent ID: 8622017

Claim:
An electroless deposition system, comprising: an initiation solution source configured to supply an initiation solution, the initiation solution containing reducing agents, wherein the initiation solution source is configured to control a concentration of dissolved oxygen in the initiation solution to be below about four and a half parts per million; a plating solution tank configured to supply a plating solution, the plating solution containing reducing agents at a concentration which stabilizes the plating solution, the plating solution tank configured to control a concentration of dissolved oxygen in the plating solution to be below about four and a half parts per million; a plating chamber configured to have an open configuration and a closed configuration, the open configuration defining an outer chamber including a lower dispense arm for dispensing the initiation solution onto a work piece during an initiation phase, and the closed configuration defining an inner chamber including an upper dispense arm for dispensing the plating solution onto the work piece during a deposition phase; the plating chamber having the open and closed configurations provides for deposition over outlier features of the work piece, the outlier features being smaller than about five hundred nanometers and isolated by about one thousand nanometers; and wherein the reducing agents in the initiation solution define a controlled concentration of reducing agents in the plating solution so as to stabilize the plating solution while also depositing over the outlier features; wherein the outer chamber is configured to be sealed when exposing the plating surface to the initiation solution; and wherein the inner chamber is configured to be sealed when exposing the plating surface to the plating solution.