Dark current simulation in interband cascade photodetectors operating in room temperature

K. Hackiewicz; P. Martyniuk; J. Rutkowski; A. Kowalewski

doi:10.1117/12.2280527

1 September 2017 Dark current simulation in interband cascade photodetectors operating in room temperature

K. Hackiewicz, P. Martyniuk, J. Rutkowski, A. Kowalewski

Proceedings Volume 10455, 12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods; 1045505 (2017) https://doi.org/10.1117/12.2280527
Event: Twelfth Integrated Optics – Sensors, Sensing Structures and Methods Conference, 2017, Szczyrk-Gliwice, Poland

Abstract

Interband cascade type-II mid-wavelength infrared (MWIR) InAs/GaSb superlattice (T2SL) detector in room temperature (300 K) is investigated. A single stage in the cascade is a double heterostructure with the absorber sandwiched between electron and hole barriers. The absorber region is non-intentionally doped and is made of MWIR 9ML InAs/9ML GaSb T2SL. At low temperatures structure has a residual doping of p-type, but at room temperature the SL is n-type with n(300K) = 10¹⁶cm^-3. In this article we calculate dark current being treated as a sum of two currents: average bulk current and average leakage current, flowing through the device. Average bulk current is theoretically calculated, while the average leakage current results from a comparison of theoretically estimated bulk current and measured one. We show that it is possible to fit theoretical model to experimental data, assuming that transport in absorber region is determined by the dynamics of the intrinsic carriers. Based on the fit we estimated carrier lifetime equal about 100 ns at temperature 300 K.

Citation Download Citation

K. Hackiewicz, P. Martyniuk, J. Rutkowski, and A. Kowalewski "Dark current simulation in interband cascade photodetectors operating in room temperature", Proc. SPIE 10455, 12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods, 1045505 (1 September 2017); https://doi.org/10.1117/12.2280527

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