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:
Sep. 29, 2015
Filed:
Mar. 22, 2012
Rajesh Rajavel, Oak Park, CA (US);
Hasan Sharifi, Agoura Hills, CA (US);
Terence DE Lyon, Newbury Park, CA (US);
Brett Nosho, Santa Monica, CA (US);
Daniel Yap, Newbury Park, CA (US);
Rajesh Rajavel, Oak Park, CA (US);
Hasan Sharifi, Agoura Hills, CA (US);
Terence De Lyon, Newbury Park, CA (US);
Brett Nosho, Santa Monica, CA (US);
Daniel Yap, Newbury Park, CA (US);
HRL Laboratories, LLC, Malibu, CA (US);
Abstract
A dual band detector includes a substrate, a composite barrier, a first absorber on the substrate and on a light incident side of the composite barrier, the first absorber for detecting first infrared light wavelengths, a second absorber on the composite barrier on a side opposite the light incident side, the second absorber for detecting second infrared light wavelengths, wherein a bandgap of the first absorber is larger than that of the second absorber, wherein the composite barrier includes a first secondary barrier, a primary barrier, and a second secondary barrier, wherein the first and second secondary barriers may have a lower bandgap energy than the primary barrier, wherein the first or the second secondary barrier may have a doping level and type different from that of the primary barrier, and wherein at least the primary barrier blocks majority carriers and allows minority carrier flow.