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:
Jul. 18, 2017
Filed:
Jun. 10, 2015
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Mario Giuseppe Saggio, Aci Bonaccorsi, IT;
Simone Rascuna, San Giovanni la Punta, IT;
Fabrizio Roccaforte, Mascalucia, IT;
STMICROELECTRONICS S.R.L., Agrate Brianza, IT;
Abstract
A switching device, such as a barrier junction Schottky diode, has a body of silicon carbide of a first conductivity type housing switching regions of a second conductivity type. The switching regions extend from a top surface of the body and delimit body surface portions between them. A contact metal layer having homogeneous chemical-physical characteristics extends on and in direct contact with the top surface of the body and forms Schottky contact metal portions with the surface portions of the body and ohmic contact metal portions with the switching regions. The contact metal layer is formed by depositing a nickel or cobalt layer on the body and carrying out a thermal treatment so that the metal reacts with the semiconductor material of the body and forms a silicide.