Patent ID: 8329260
Filing Date: 2012-12-11
Classification: H01J,H01L

Abstract:
1. A method comprising: performing ion implantation into a substrate with a species to form a layer of bubbles in said substrate, wherein said species is selected from the group consisting of hydrogen, helium, nitrogen, and oxygen; and controlling a size of said bubbles within said substrate by cooling said substrate to an implant temperature approximately between −150° C. and 30° C. during said ion implantation using a platen with at least a first zone and a second zone, wherein said controlling comprises cooling a first region of said substrate to a higher temperature than a second region of said substrate, said first region disposed on said first zone and said second region disposed on said second zone, said first zone operating at a first temperature and said second zone operating at a second temperature different than said first temperature, wherein said bubbles have a larger diameter in said first region than said second region.