Patent ID: 7807548
Filing Date: 2010-10-05
Classification: B81B,B81C

Abstract:
1. A method for forming a semiconductor component with a rough buried interface, the method comprising: a) fracturing an initial semiconductor substrate to provide a first semiconductor substrate having a first surface of roughness R b) performing a first thermal oxidation on the first surface of the first semiconductor substrate to form a first oxide layer defining an external oxide surface on the first semiconductor substrate and a first buried oxide-semiconductor interface below the external oxide surface, wherein the first buried oxide-semiconductor interface has a roughness R c) providing a second substrate with a roughness R d) performing a second thermal oxidation on the second substrate until a second oxide layer is formed on the second substrate defining a second buried oxide-semiconductor interface having a fourth roughness that is less than the third roughness; e) assembling the external oxide surface of the first semiconductor substrate with the second substrate; and f) thinning at least one of the first semiconductor substrate and the second substrate by a process selected from the group consisting of mechanical techniques, chemical techniques, and substrate fracture.