Patent ID: 7323398
Filing Date: 2008-01-29
Classification: H01L

Abstract:
1. A method of manufacturing a crystalline wafer, comprising: implanting first atomic species in a donor substrate to form a region of weakness at a first depth therein and configured to facilitate detachment of a first layer of the donor substrate from a remaining portion of the donor substrate, which first layer and remaining portion are disposed on opposite sides of the region of weakness; implanting second atomic species in the donor substrate to form a gettering region at a second depth therein that is different than the first depth; bonding a handle substrate to the donor substrate to provide a bonded structure having a bonded interface; wherein the gettering region is configured to reduce or minimize migration of the implanted first atomic species past the gettering region to reduce or minimize the formation of blisters at the bonded interface; detaching the first layer from the donor substrate to transfer it to the handle substrate; and treating the first layer after detachment to remove material from the first layer including the entire gettering region.