METHOD FOR MANUFACTURING COMPOUND MATERIAL WAFERS AND CORRESPONDING COMPOUND MATERIAL WAFER

摘要

The invention relates to a method for manufacturing compound material wafers, in particular, silicon on insulator type wafers, comprising the steps: Providing an initial donor substrate, forming an insulating layer over the initial donor substrate, forming a predetermined splitting area in the initial donor substrate, attaching the initial donor substrate onto a handle substrate and detaching the donor substrate at the predetermined splitting area, thereby transferring a layer of the initial donor substrate onto the handle substrate to form a compound material wafer. In order to be able to reuse the donor substrate more often, the invention proposes to carry out the thermal treatment step to form the insulating layer at a temperature of less than 95O0C, in particular, less than 9000C, preferably at 85O0C. The invention also relates to a silicon on insulator type wafer manufactured according to the inventive method.