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.

Date of Patent:
Jun. 24, 2014

Filed:

Oct. 04, 2013
Applicant:

National Institute for Materials Science, Ibaraki, JP;

Inventors:

Naoto Umezawa, Ibaraki, JP;

Toyohiro Chikyo, Ibaraki, JP;

Toshihide Nabatame, Ibaraki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/316 (2006.01);
U.S. Cl.
CPC ...
Abstract

To provide a method for reducing a thickness of an interfacial layer, which contains: (a) forming a film of an oxide of a first metal on a semiconductor layer via an oxide film of a semiconductor serving as an interfacial layer; and (b) forming a film of an oxide of a second metal on the film of the oxide of the first metal, where the second metal has higher valency than that of the first metal.


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