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:
Jun. 07, 2022
Filed:
Oct. 19, 2017
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Masaaki Shimatani, Chiyoda-ku, JP;
Shimpei Ogawa, Chiyoda-ku, JP;
Daisuke Fujisawa, Chiyoda-ku, JP;
Satoshi Okuda, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
This electromagnetic wave detector is provided with light reception graphene and reference graphene that are aligned on an insulating layer, first electrodes and second electrodes that are disposed so as to oppose each other and sandwich the light reception graphene and reference graphene, a gate electrode for applying a gate voltage to the light reception graphene and reference graphene, and a balanced circuit and detection circuit that are connected between the second electrodes. If electromagnetic waves are incident on the light reception graphene, photocarriers will be generated through in-band transition. If electromagnetic waves are incident on the reference graphene, photocarriers will not be generated because of the Pauli blocking effect. In a state where no electromagnetic waves are incident on the light reception graphene or reference graphene, the balanced circuit causes the first electrodes and second electrodes to have the same potential. The electrical signal between the second electrodes is detected in a state where electromagnetic waves are incident on the light reception graphene and reference graphene.