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Opto - Electronics Review
EN NEΔT is the commonly used figure-of-merit for infrared-imaging systems using focal plane arrays (FPAs). This paper discusses an intuitive approach to understanding what determines this value in the majority of MWIR and LWIR broad-band applications, namely, the available charge storage capacity of th[...]
Opto - Electronics Review
EN The paper reports on photoelectrical performance of the mid-wave infrared HgCdTe detector for high operating temperature condition. Detector structure was simulated with APSYS numerical platform by Crosslight Inc. The comprehensive analysis of the detector performance such as dark current, detectivi[...]
Metrology and Measurement Systems
2017 Vol. 24, nr 3 509--514
EN In this work we report simulation and experimental results for an MWIR HgCdTe photodetector designed by computer simulation and fabricated in a joint laboratory run by VIGO Sytems S.A. and Military University of Technology. The device is based on a modified N+pP+ heterostructur[...]
Opto - Electronics Review
2019 Vol. 27, No. 3 275--281
EN The paper reports on the barrier mid-wave infrared InAs/InAsSb (xSb = 0.4) type-II superlattice detector operating below thermoelectrical cooling. AlAsSb with Sb composition, xSb = 0.97; barrier doping, ND < 2×1016 cm−3 leading to valence band offset below 100 meV in relation to the active layer dop[...]
Bulletin of the Polish Academy of Sciences. Technical Sciences
2019 Vol. 67, nr 1 141--145
EN We report on the photoresponse of mid-wavelength infrared radiation (MWIR) type-II superlattices (T2SLs) InAs/InAsSb high operating temperature (HOT) photoresistor grown on GaAs substrate. The device consists of a 200 periods of active layer grown on GaSb buffer layer. The photoresistor reached a 50[...]
Opto - Electronics Review
EN Uncooled infrared focal plane arrays are being developed for a wide range of thermal imaging applications. Fire-fighting, predictive maintenance, process control and thermography are a few of the industrial applications which could take benefit from uncooled infrared detector. Therefore, to answer t[...]
Opto - Electronics Review
EN While charge-coupled device ( CCD ) technology is often perceived to provide nearly optimum signal multiplexing and very low imager noise, coupling high performance detectors ( at cutoff wavelengths from 0.6 žmto 17 um ) to CMOS multiplexers provides lower (<10 e-) read noise at high data rates usin[...]
Opto - Electronics Review
EN Recent efforts to improve the performance of type II InAs/GaSb superlattice photodiodes and focal plane arrays (FPA) have been reviewed. The theoretical bandstructure models have been discussed first. A review of recent developments in growth and characterization techniques is given. The efforts to [...]
Metallurgy and Foundry Engineering
PL Celem pracy było zbadanie możliwości uzyskania kompozytu amorficzno-krystlicznego przy wykorzystaniu proszku na osnowie niklu, krzemu i boru gatunku 1559-40 oraz proszku srebra. Proces natryskiwania plazmowego przeprowadzono na płytce miedzianej chłodzonej wodą. Szybkość chłodzenia oszacowano za pom[...]
EN The aim of this work is to study the possibility of obtaining an amorphous-crystalline composite starting from Ni-Si-B-based powder grade 1559-40 and silver powder. The process of plasma spray deposition was performed on a water-cooled copper substrate. The cooling rate was assessed using a mid-wave[...]
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