Patent ID: 7592254

Claim:
A method for depositing a conformal or superconformal layer onto a recessed feature of a substrate, said method comprising the steps of: providing said substrate having said recessed feature, wherein said recessed feature comprises an opening, a bottom surface and side surfaces extending from said opening to said bottom surface; contacting said recessed feature with a flow of a suppressor gas, thereby generating suppressor on surfaces of said recessed feature; establishing a substantially steady state, anisotropic spatial distribution of the flux of the suppressor gas to said recessed feature, wherein the flux of the suppressor gas decreases along said side surfaces from the opening to the bottom surface; and contacting said recessed feature with a flow of a deposition gas; wherein suppressor on said surfaces decreases the deposition rate from said deposition gas onto said surfaces, and wherein deposition from said deposition gas results in deposition of said conformal or superconformal layer.