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.:

US 7800193 B1

PDF
Full Text
Expired
Date of Patent:
Sep. 21, 2010

Filed:

Mar. 08, 2007
Applicants:

Junichi Fujikata, Tokyo, JP;

Keishi Ohashi, Tokyo, JP;

Inventors:

Junichi Fujikata, Tokyo, JP;

Keishi Ohashi, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/108 (2006.01);
U.S. Cl.
CPC ...
Abstract

Both high light receiving sensitivity and high speed of a photodiode are achieved at the same time. The photodiode is provided with a semiconductor layer () and a pair of metal electrodes () which are arranged on the surface of the semiconductor layer () at an interval (d) and form an MSM junction. The interval (d) satisfies the relationship of λ>d>λ/100, where λ is the wavelength of incident light. The metal electrodes () can induce surface plasmon. At least one of the electrodes forms a Schottky junction with the semiconductor layer (), and a low end portion is embedded in the semiconductor layer () to a position at a depth less than λ/2n, where n is the refractive index of the semiconductor layer ().


Find Patent Forward Citations

Fujikata, Junichi. (2010). Photodiode, method for manufacturing such photodiode, optical communication device and optical interconnection module (U.S. Patent No. 7800193). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7800193

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