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. 16, 2013
Filed:
Oct. 30, 2008
Hisashi Shima, Tsukuba, JP;
Hiroyuki Akinaga, Tsukuba, JP;
Shoji Ishibashi, Tsukuba, JP;
Tomoyuki Tamura, Tsukuba, JP;
Hisashi Shima, Tsukuba, JP;
Hiroyuki Akinaga, Tsukuba, JP;
Shoji Ishibashi, Tsukuba, JP;
Tomoyuki Tamura, Tsukuba, JP;
Abstract
The present invention provides a rectifier element that has a titanium oxide layer interposed between first and second electrodes containing a transition metal with an electronegativity larger than that of Ti, wherein, in the titanium oxide layer, only the interface on the side facing any one of the electrodes has a stoichiometric composition, and wherein the average composition of the whole layer is represented by the formula TiO(wherein x satisfies the relationship 1.6≦x<2), and wherein the rectifying characteristics can be reversed by applying a reverse electrical signal that exceeds the critical reverse electric power between the first and second electrodes in an opposite direction. The present invention also provides a process for producing a rectifier element, which includes the steps of depositing a first electrode that contains a transition metal with an electronegativity larger than that of Ti on a substrate; depositing a layer of titanium oxide (TiO, wherein x satisfies the relationship 1.6≦x<2) on the first electrode; exposing the surface of the titanium oxide (TiO) layer to oxygen atmosphere; and depositing a second electrode containing a transition metal with an electronegativity larger than that of Ti on the surface of the titanium oxide (TiO) layer exposed to the oxygen atmosphere.