Patent ID: 7060596

Claim:
A process for fabricating a semiconductor substrate with a single-crystal lattice, the process comprising the successive steps of: a) forming a substrate with a single-crystal lattice, the substrate having a top surface with at least one discontinuity in the single-crystal lattice therein, whereby the top surface of the substrate has a recess at the discontinuity on the top surface; b) amorphizing the single-crystal lattice around a periphery of the recess to produce a structure including an amorphized region around the periphery of the recess; c) prior to any thermal annealing, depositing a layer of amorphous material having the same chemical composition as that of the substrate directly on the structure produced in step b; and d) thermally annealing the amorphous material and the amorphized region around the periphery of the recess, so as to be continuous with each other and with the single-crystal lattice of the substrate.