Patent ID: 9349804
Filing Date: 2016-05-24
CPC Classification: H01L

Claim Text:
1. A method for manufacturing a composite wafer, the method comprising: providing a porous carbon substrate core; encapsulating the substrate core using an encapsulating layer, thereby obtaining a substrate; providing a SiC-based functional layer; forming an adhesion layer, comprising a carbide-and-silicide-forming metal on the SiC-based functional layer or on a portion of the encapsulating layer, the adhesion layer having a thickness between 1 nm and 10 nm; positioning the SiC-based functional layer on the substrate in such a manner that the adhesion layer is interposed between the encapsulating layer and the functional layer; and bonding the SiC-based functional layer on the substrate in such a manner that at least a portion of the carbide-and-silicide-forming metal of the adhesion layer reacts with a portion of the SiC of the functional layer to form at least one of a carbide and a silicide, wherein the encapsulating layer encapsulates the substrate core in an essentially oxygen-tight manner.