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:
May. 13, 2008
Filed:
Feb. 16, 2007
Applicants:
Mani Sundaram, Nashua, NH (US);
Axel R Reisinger, Milford, NH (US);
Inventors:
Mani Sundaram, Nashua, NH (US);
Axel R Reisinger, Milford, NH (US);
Assignee:
Bae Systems Information and Electronic Systems Integration Inc., Nashua, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A QWIP structure is disclosed that includes a graded emitter barrier and can further be configured with a blocked superlattice miniband. The graded emitter barrier effectively operates to launch dark electrons into the active quantum well region, thereby improving responsivity. A graded collector barrier may also be included for reverse bias applications. The configuration operates to eliminate or otherwise reduce image artifacts or persistence associated with dielectric relaxation effect in low-background applications.