Dark current suppression in HOT LWIR HgCdTe heterostructures operating in non-equilibrium mode

Martyniuk P; Gawron W; Pawluczyk J; Kblowski A; Madejczyk P; Rogalski A

红外与毫米波学报, 2015, 34 (4): 385, 网络出版: 2015-10-22

Dark current suppression in HOT LWIR HgCdTe heterostructures operating in non-equilibrium mode

论文大纲

Martyniuk P ¹Gawron W ¹Pawluczyk J ²Kblowski A ²Madejczyk P ¹Rogalski A ¹

作者单位

¹ Institute of Applied Physics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland

² Vigo System S.A., 129/133 Poznańska Str., 05-850 Oz·arów Mazowiecki, Poland

HOT HgCdTe non-equilibrium conditions barrier infrared detectors

摘要

Abstract

Typically, infrared detectors require cryogenic cooling to limit dark current which is directly dependent on Auger generation-recombination mechanism and highly influential in HgCdTe-narrow band gap material. The Auger suppressed architectures have an advantage over conventional detectors allowing operation at elevated temperatures >200 K. Architecture with combination of exclusion and extraction heterojunctions has been proposed to lower Auger contribution. The paper presents a new long-wave (≈ 10 μm) infrared HgCdTe architecture with graded gap/doping interfaces and extra barrier located in exclusion heterojunction to suppress dark current for high operating temperature conditions. Proper barrier implementation reduces dark current by more than 20 A/cm2 for room temperature operation.

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Martyniuk P, Gawron W, Pawluczyk J, Kblowski A, Madejczyk P, Rogalski A. Dark current suppression in HOT LWIR HgCdTe heterostructures operating in non-equilibrium mode[J]. 红外与毫米波学报, 2015, 34(4): 385. Martyniuk P, Gawron W, Pawluczyk J, Kblowski A, Madejczyk P, Rogalski A. Dark current suppression in HOT LWIR HgCdTe heterostructures operating in non-equilibrium mode[J]. Journal of Infrared and Millimeter Waves, 2015, 34(4): 385.

Dark current suppression in HOT LWIR HgCdTe heterostructures operating in non-equilibrium mode

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