Complementary barrier infrared detector (CBIRD) with double tunnel junction contact and quantum dot barrier infrared detector (QD-BIRD) |
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| Institution: | 1. Institute of Nuclear Sciences, Hacettepe University, Turkey;2. Div. of Physics Education, Faculty of Education, Akdeniz University, Turkey;3. Department of Nanotechnology Eng., Cumhuriyet University, Turkey;4. Department of Physics, Anadolu University, Turkey;5. Department of Physics, Bilkent University, Turkey;1. Institute of Applied Physics, Military University of Technology, 2 Urbanowicza Str., 00-908 Warsaw, Poland;2. Vigo System S.A., 129/133 Poznańska Str., 05-850 O?arów Mazowiecki, Poland;3. Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Sec.4, Roosevelt Rd., Taipei 10617, Taiwan;1. Georgia Tech Research Institute, 925 Dalney Street, Atlanta, GA, USA;2. U.S. Army Product Manager Ground Sensors, 10220 Burbeck Road, Fort Belvoir, VA, USA |
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| Abstract: | The InAs/GaSb type-II superlattice based complementary barrier infrared detector (CBIRD) has already demonstrated very good performance in long-wavelength infrared (LWIR) detection. In this work, we describe results on a modified CBIRD device that incorporates a double tunnel junction contact designed for robust device and focal plane array processing. The new device also exhibited reduced turn-on voltage. We also report results on the quantum dot barrier infrared detector (QD-BIRD). By incorporating self-assembled InSb quantum dots into the InAsSb absorber of the standard nBn detector structure, the QD-BIRD extend the detector cutoff wavelength from ～4.2 μm to 6 μm, allowing the coverage of the mid-wavelength infrared (MWIR) transmission window. The device has been observed to show infrared response at 225 K. |
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