Patent ID: 7084046
Filing Date: 2006-08-01
Classification: H01L

Abstract:
1. A method of fabricating an SOI wafer comprising: a bonding step that comprises: a first thinning step that comprises reducing a thickness of the second substrate to a first thickness to obtain an SOI layer bonded to the first substrate; a high-temperature annealing step that comprises annealing the SOI layer bonded to the first substrate at a temperature in a range of 1,000 to 1,3000° C.; an etch-stoppable, ion-implanted-layer forming step that is conducted after said high-temperature annealing step and that comprises: a second thinning step that comprises selectively etching the SOI layer bonded to the first substrate to obtain an SOI wafer having an SOI layer with a second thickness; wherein the second thickness is smaller than the first thickness.