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Proceedings Paper

Electrical and optical performance of mid-wavelength infrared InAsSb heterostructure detectors
Author(s): Emilia Gomółka; Małgorzata Kopytko; Krystian Michalczewski; Łukasz Kubiszyn; Artur Kębłowski; Waldemar Gawron; Piotr Martyniuk; Józef Piotrowski; Jarosław Rutkowski
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Paper Abstract

In this work we investigate the high-operating temperature performance of InAsSb/AlSb heterostructure detectors with cut-off wavelengths near 5 μm at 230 K. The devices have been fabricated with different type of the absorbing layer: nominally undoped absorber, and both n- and p-type doped. The results show that the device performance strongly depends on absorber layer doping. Generally, p-type absorber provides higher values of current responsivity than n-type absorber, but at the same time also higher values of dark current. The device with nominally undoped absorbing layer shows moderate values of both current responsivity and dark current. Resulting detectivities D° of non-immersed devices varies from 2×109 to 7×109 cmHz1/2/W at 230 K, which is easily achievable with a two stage thermoelectric cooler.

Paper Details

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Proc. SPIE 10433, Electro-Optical and Infrared Systems: Technology and Applications XIV, ; doi: 10.1117/12.2279604
Show Author Affiliations
Emilia Gomółka, Wojskowa Akademia Techniczna im. Jaroslawa Dabrowskiego (Poland)
Małgorzata Kopytko, Wojskowa Akademia Techniczna im. Jaroslawa Dabrowskiego (Poland)
Krystian Michalczewski, Wojskowa Akademia Techniczna im. Jaroslawa Dabrowskiego (Poland)
Łukasz Kubiszyn, VIGO System S.A. (Poland)
Artur Kębłowski, VIGO System S.A. (Poland)
Waldemar Gawron, VIGO System S.A. (Poland)
Piotr Martyniuk, Wojskowa Akademia Techniczna im. Jaroslawa Dabrowskiego (Poland)
Józef Piotrowski, VIGO System S.A. (Poland)
Jarosław Rutkowski, Wojskowa Akademia Techniczna im. Jaroslawa Dabrowskiego (Poland)


Published in SPIE Proceedings Vol. 10433:
Electro-Optical and Infrared Systems: Technology and Applications XIV
David A. Huckridge; Reinhard Ebert; Helge Bürsing, Editor(s)

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