InAs/InAs1-xSbx type-II superlattices for high performance long wavelength infrared detection

M. Razeghi; A. Haddadi; A. M. Hoang; R. Chevallier; S. Adhikary; A. Dehzangi

doi:10.1117/12.2228306

20 May 2016 InAs/InAs_1-xSb_x type-II superlattices for high performance long wavelength infrared detection

M. Razeghi, A. Haddadi, A. M. Hoang, R. Chevallier, S. Adhikary, A. Dehzangi

Proceedings Volume 9819, Infrared Technology and Applications XLII; 981909 (2016) https://doi.org/10.1117/12.2228306
Event: SPIE Defense + Security, 2016, Baltimore, MD, United States

Abstract

We report InAs/InAs_1-xSb_x type-II superlattice base photodetector as high performance long-wavelength infrared nBn device grown on GaSb substrate. The device has 6 μm-thick absorption region, and shows optical performance with a peak responsivity of 4.47 A/W at 7.9 μm, which is corresponding to the quantum efficiency of 54% at a bias voltage of negative 90 mV, where no anti-reflection coating was used for front-side illumination. At 77K, the photodetector’s 50% cut-off wavelength was ~10 μm. The device shows the detectivity of 2.8x10¹¹ cm.√Hz/W at 77 K, where RxA and dark current density were 119 Ω•cm² and 4.4x10^-4 A/cm² , respectively, under -90 mV applied bias voltage.

Citation Download Citation

M. Razeghi, A. Haddadi, A. M. Hoang, R. Chevallier, S. Adhikary, and A. Dehzangi "InAs/InAs_1-xSb_x type-II superlattices for high performance long wavelength infrared detection", Proc. SPIE 9819, Infrared Technology and Applications XLII, 981909 (20 May 2016); https://doi.org/10.1117/12.2228306

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available