TY - GEN
T1 - High-performance bias-selectable dual-band mid-/long-wavelength infrared photodetectors and focal plane arrays based on InAs/GaSb Type-II superlattices
AU - Razeghi, M.
AU - Haddadi, A.
AU - Hoang, A. M.
AU - Chen, G.
AU - Ramezani-Darvish, S.
AU - Bijjam, P.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - InAs/GaSb type-II superlattice
KW - dual-band infrared imaging
KW - focal plane array
KW - high operating temperature infrared photodetector
KW - infrared imaging
KW - longwavelength infrared
KW - mid-wavelength infrared
KW - photodetector
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U2 - 10.1117/12.2019147
DO - 10.1117/12.2019147
M3 - Conference contribution
AN - SCOPUS:84883775469
SN - 9780819494955
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Infrared Technology and Applications XXXIX
T2 - 39th Infrared Technology and Applications
Y2 - 29 April 2013 through 3 May 2013
ER -