Patent ID: 7871900

Claim:
A method of forming a structure, which comprises: implanting atomic species through an upper surface of a donor substrate and to a given depth relative to the upper surface to form an embrittlement zone in the donor substrate, the embrittlement zone defining a removable layer within the donor substrate; assembling the upper surface of the donor substrate to a receiver substrate; detaching the removable layer from the donor substrate at the embrittlement zone, thereby forming a detachment surface on the removable layer, with the detaching achieved by a high temperature annealing which includes a temperature upgrade phase for heating to a predetermined maximum temperature, a maximum temperature maintaining phase for a predetermined exposure duration which is less than or equal to a limit that is a linear function of the maximum temperature, and a temperature downgrade phase, with the maximum temperature and the exposure duration being selected so as to prevent the appearance of significant defects at the detachment surface.