The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 1985
Filed:
Mar. 08, 1984
Applicant:
Inventors:
Assignee:
Thomson-CSF, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ;
U.S. Cl.
CPC ...
148175 ; 2957 / ; 2957 / ; 148-15 ; 148189 ; 148191 ; 148D / ; 148D / ; 148D / ; 148D / ; 156612 ; 156613 ; 156614 ; 156D / ; 156D / ; 156D / ; 357-4 ; 357 49 ;
Abstract
The invention provides a process comprising a step for depositing at least one intrinsic or doped monocrystalline silicon layer on a substrate, also monocrystalline, followed by a step for forming a thin silica layer at the level of the original substrate-silicon interface. The silica layer is obtained by oxidation through the substrate, followed by a heat treatment step during which the monocrystalline silicon is oxidized by the implanted oxygen ions. The first approach may take place according to two variants: thermal or plasma oxidation of the silicon-substrate interface. Oxidation takes place during the return to ambient temperature of the stack of layers after the deposit has been made.