Patent ID: 8043484

Claim:
A method of depositing material on a semiconductor wafer substrate having field regions and recessed features, the method comprising: (a) depositing a layer of the material on at least a portion of the field regions of the wafer; (b) forming a particle reflector over the semiconductor wafer substrate, wherein the particle reflector is configured for reflecting material resputtered from the semiconductor wafer substrate back to the semiconductor wafer substrate, wherein forming the particle reflector comprises creating a chamber pressure of between about 20-60 mTorr; and (c) resputtering at least the layer residing on the field region of the wafer by impinging the layer with high energy particles under said pressure, wherein said pressure is sufficient to cause momentum transfer reflection of the resputtered material from the particle reflector, so that at least some of the reflected material derived from the field region is deposited in the recessed features of the substrate, wherein the resputtering is performed in an apparatus without an ICP source.