Patent ID: 7029991

Claim:
A process for fabricating two or more silicon-on-insulator (SOI) type semiconductor substrates, wherein each of the substrates include a semiconductor active layer, the process comprising the steps of: forming an insulating layer on top of a support layer; forming a silicon-containing semiconductor substrate with a given thickness on top of the insulating layer; forming both an insulation layer within the silicon-containing semiconductor substrate, and a residual layer of silicon-containing semiconductor on top of the silicon-containing semiconductor substrate, by performing the steps of: implanting at least one of nitrogen and oxygen atoms at a predetermined depth in the given thickness of the silicon-containing semiconductor substrate; and activating at least one of nitrogen and oxygen atoms through heat to create a layer of insulating, material within the silicon-containing semiconductor substrate and to create a residual layer of silicon-containing semiconductor through the reaction with the silicon-containing semiconductor substrate thereby creating the residual layer of silicon-containing semiconductor with a predetermined thickness.