Patent ID: 9583341
Date: 2017-02-28
CPC Classifications: H01L

Claim:
1. A method for transferring a useful layer to a receiver substrate, the process comprising: providing a donor substrate comprising an intermediate layer located between a carrier substrate and a useful layer, the intermediate layer configured to be plastically deformed when heated to a temperature at or above a first temperature, wherein the intermediate layer does not include chemical species susceptible to degassing during a heat treatment carried out at or above the first temperature; providing a receiver substrate; assembling the receiver substrate and the donor substrate such that the useful layer and the intermediate layer are disposed between the carrier substrate and the receiver substrate; providing an additional layer disposed between the carrier substrate and the receiver substrate; the additional layer comprising chemical species susceptible to diffusion out from the additional layer and into the intermediate layer during the heat treatment carried out at or above the first temperature so as to form a weak zone in the intermediate layer; carrying out the heat treatment on the receiver substrate and the donor substrate after assembling the receiver substrate and the donor substrate, the heat treatment being carried out at a second temperature above the first temperature.