Patent ID: 8323403

Claim:
A method for producing an SOI wafer comprising a carrier wafer and a monocrystalline silicon layer having a thickness of less than 500 nm, an excess of interstitial silicon atoms prevailing in the entire volume of the silicon layer, comprising: a) producing a silicon single crystal by Czochralski crucible pulling, the condition v/G<(v/G) crit =1.3×10 −3 cm 2 /(K×min) being fulfilled at the crystallization front over the entire crystal cross section, with the result that an excess of interstitial silicon atoms prevails in the silicon single crystal produced, b) separating of at least one donor wafer from the silicon single crystal, e) bonding the donor wafer to a carrier wafer, and f) reducing of the thickness of the donor wafer to provide a silicon layer having a thickness of less than 500 nm, bonded to the carrier wafer.