High-performance bias-selectable dual-band mid-/long-wavelength infrared photodetectors and focal plane arrays based on InAs/GaSb Type-II superlattices

Manijeh Razeghi, Abbas Haddadi, A. M. Hoang, G. Chen, S. Ramezani-Darvish, P. Bijjam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

We report a bias selectable dual-band mid-wave infrared (MWIR) and long-wave infrared (LWIR) co-located detector with 3 μm active region thickness per channel that is highly selective and can perform under high operating temperatures for the MWIR band. Under back-side illumination, a temperature evolution study of the MWIR detector's electro-optical performance found the 300 K background-limit with 2π field-of-view to be achieved below operating temperatures of 160 K, at which the temperature's 50% cutoff wavelength was 5.2 μm. The measured current reached the system limit of 0.1 pA at 110 K for 30 μm pixel-sized diodes. At 77 K, where the LWIR channel operated with a 50% cutoff wavelength at 11.2 μm, an LWIR selectivity of ∼17% was achieved in the MWIR wave band between 3 and 4.7 μm, making the detector highly selective.

Original languageEnglish (US)
Title of host publicationInfrared Technology and Applications XXXIX
Volume8704
DOIs
StatePublished - Sep 17 2013
Event39th Infrared Technology and Applications - Baltimore, MD, United States
Duration: Apr 29 2013May 3 2013

Other

Other39th Infrared Technology and Applications
CountryUnited States
CityBaltimore, MD
Period4/29/135/3/13

Keywords

  • dual-band infrared imaging
  • focal plane array
  • high operating temperature infrared photodetector
  • InAs/GaSb type-II superlattice
  • infrared imaging
  • longwavelength infrared
  • mid-wavelength infrared
  • photodetector

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Razeghi, M., Haddadi, A., Hoang, A. M., Chen, G., Ramezani-Darvish, S., & Bijjam, P. (2013). High-performance bias-selectable dual-band mid-/long-wavelength infrared photodetectors and focal plane arrays based on InAs/GaSb Type-II superlattices. In Infrared Technology and Applications XXXIX (Vol. 8704). [87040S] https://doi.org/10.1117/12.2019147