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High operating temperature midwave quantum dot barrier infrared detector (QD-BIRD)

Show simple item record Ting, David Z. Soibel, Alexander Hill, Cory J. Keo, Sam A. Mumolo, Jason M. Gunapala, Sarath D. 2012-10-03T21:56:25Z 2012-10-03T21:56:25Z 2012-04-23
dc.identifier.citation SPIE Defense and Security Symposium, Baltimore, Maryland, April 23-27, 2012 en_US
dc.identifier.clearanceno 12-1581
dc.description.abstract The nBn or XBn barrier infrared detector has the advantage of reduced dark current resulting from suppressed Shockley-Read-Hall (SRH) recombination and surface leakage. High performance detectors and focal plane arrays (FPAs) based on InAsSb absorber lattice matched to GaSb substrate, with a matching AlAsSb unipolar electron barrier, have been demonstrated. The band gap of lattice-matched InAsSb yields a detector cutoff wavelength of approximately 4.2 ・μm when operating at ~150K. We report results on extending the cutoff wavelength of midwave barrier infrared detectors by incorporating self-assembled InSb quantum dots into the active area of the detector. Using this approach, we were able to extend the detector cutoff wavelength to ~6 μm, allowing the coverage of the full midwave infrared (MWIR) transmission window. The quantum dot barrier infrared detector (QD-BIRD) shows infrared response at temperatures up to 225 K. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012. en_US
dc.subject midwave infrared en_US
dc.subject high operating temperature en_US
dc.subject infrared detector en_US
dc.subject quantum dot en_US
dc.subject unipolar barrier en_US
dc.title High operating temperature midwave quantum dot barrier infrared detector (QD-BIRD) en_US
dc.type Preprint en_US
dc.subject.NASATaxonomy Instrumentation and Photography en_US

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