Active solid-state devices (e.g. – transistors – solid-state diode – Thin active physical layer which is – Heterojunction
Reexamination Certificate
2007-04-17
2007-04-17
Crane, Sara (Department: 2811)
Active solid-state devices (e.g., transistors, solid-state diode
Thin active physical layer which is
Heterojunction
C257S017000, C257S185000
Reexamination Certificate
active
10803295
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.
REFERENCES:
patent: 5384469 (1995-01-01), Choi
patent: 5459332 (1995-10-01), Carruthers
patent: 6211529 (2001-04-01), Gunapala et al.
patent: 6674091 (2004-01-01), Gunapala et al.
Gunapala, Sarath et al., “MQW Based Blocked Intersubband Detector for Low Background Operation”, NASA Tech Briefs, Jul. 2001, pp. 1-2, NPO-21073, NASA's Jet Propulsion Laboratory, Pasadena, CA.
Bandara, Sumith et al., “Quantum Well Infrared Photodetectors for Low Background Applications”, www.eps.org, Mar. 2001, p. 1, Jet Propulsion Laboratory.
Gunapala, S. et al., “Quantum Well Infrared Photodetector (QWIP) Focal Plane Arrays”, Semiconductors and Semimetals, 1999, pp. 1-83, vol. 62.
Gunapala, S. et al., “640X486 Long-wavelength Two-color GaAs/AlGaAs Quantum Well Infrared Photodetector (QWIP) Focal Plane Array Camera”, pp. 1-24.
Gunapala, S. et al., “640X512 Pixel Four-Band, Broad-Band, and Narrow-Band Quantum Well Infrared Photodetector Focal Plane Arrays”, pp. 1-12.
PCT International Search Report dated May 26, 2006 of International Application No. PCT/US05/08121 filed Mar. 10, 2005.
Reisinger Axel R
Sundaram Mani
BAE Systems Information and Electronic Systems Integration Inc.
Crane Sara
Maine & Asmus
LandOfFree
QWIP with electron launcher for reducing dielectric... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with QWIP with electron launcher for reducing dielectric..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QWIP with electron launcher for reducing dielectric... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3724094