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:
Nov. 02, 2021
Filed:
May. 19, 2020
Applicant:
Government of the United States As Represented BY the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Inventors:
Frank K. Hopkins, Beavercreek, OH (US);
Shamus P. McNamara, New Salisbury, IN (US);
John G. Jones, Dayton, OH (US);
Assignee:
United States of America as represented by the Secretary of the Air Force, Wright-Patterson AFB, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/11 (2006.01); H01L 31/028 (2006.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/1105 (2013.01); H01L 31/028 (2013.01); H01L 31/1804 (2013.01);
Abstract
In accordance with various embodiments of the disclosed subject matter, a phototransistor comprises an NPN or PNP phototransistor having a base including a Si-region, a Ge-region, and a Ge—Si interface region wherein photons are absorbed in the Ge region and conduction-band electrons are attracted to the interface region such that the electrons' mobility is enhanced thereby.