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Showing 1 to 15 of 15 for “"mercury cadmium telluride"”.
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Photoluminescence Study of Defects in Mercury Cadmium Telluride
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-12T20:59:11Z No. of bitstreams: 1 Furstenberg_Robert.pdf: 3021685 bytes, checksum: 9b448a1e45eb387f0bf81d018a5a9ff9 (MD5)
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Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array
… the correction of spatial noise artifacts in a mercury cadmium telluride infrared camera system. The spatial noise artifacts are a result of nonuniformities within the infrared focal plane detector array. The techniques presented dispense with the need for traditional temperature references, and …
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Topics in semiconductor physics: Part I. Phonons in semiconducting alloys and alloy superlattices ; Part II. Deep energy levels of defects in mercury cadmium telluride and wurtzite semiconductors
This thesis consists of two parts. The first part is devoted to the study of vibrational properties of semiconducting alloys and alloy superlattices. The second part deals with deep energy levels of defects in semiconductors. In Part I, densities of phonon states are evaluated using the recursion …
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Antimony-based type-II superlattice infrared photodetectors on indium-arsenide substrates
… in place of the current systems, such as mercury cadmium telluride. While type-II superlattices over a number of advantages in design and material quality, theoretical predictions of their high performance have yet to be realized. This work concentrates on novel designs, fabrication, and …
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Measurement of 'one over f noise' in infrared detection using a novel technique
… f noise' (1/f noise) limits the sensitivity in Mercury Cadmium Telluride (HgCdTe) infrared devices. It is therefore imperative to be able to measure and account for its contribution to the total device noise. In this thesis, the 1/f noise of a HgCdTe device is measured and studied using two …
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Propellant Surface Temperature and Plume Characteristics of Micro-Pulsed Plasma Thrusters
… in real time. The detector material is Mercury Cadmium Telluride (HgCdTe), chosen because the maximum detector response occurs in wavelengths where a Carbon-Fluorine stretching mode in the solid propellant emits strongly in the infrared. This paper outlines the design, calibration and …
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Mid-IR type-II InAs/GaSb nanoscale superlattice sensors
… are inherently slow. Available photon detectors (mercury cadmium telluride (MCT), bulk InSb and quantum well infrared detectors (QWIPs))overcome this limitation. However, there are some fundamental issues decreasing their performance and ability for high temperature operation, including fast Auger …
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Mid-Wave and Long-Wave Single Uni-polar Barrier Infrared Detectors Based on Antimonide Material Systems
… of the best performing technologies is based on Mercury Cadmium Telluride. However, it still has limitations with regard to low operating temperature, material yield and processing difficulties. A newer material technology known as type-II indium arsenide/gallium antimonide strain-layered …
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Advanced numerical modeling and characterization of infrared focal plane arrays
Mercury cadmium telluride (HgCdTe) is the detector material of choice for high performance infrared (IR) focal plane arrays (FPAs). Unique among semiconductor materials, HgCdTe features a widely tunable, direct bandgap from the ultraviolet to very long wavelength IR, lattice matched substrates, …
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Antimonide-based type-II superlattices for infrared detection
… generation of state-of-the-art devices such as mercury cadmium telluride (MCT) detectors. One of the more promising alternatives is the type-II superlattice (T2SL), which was first proposed for infrared detection in 1978 and has been theoretically predicted to perform better than any MCT …
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Investigation of InAs/GaSb superlattice based nBn detectors and focal plane arrays
… on interband transitions in pn junctions made of mercury cadmium telluride (MCT) or InSb, and intersubband transistions in quantum well infrared detector(QWIP). However, lack of spatial uniformity over larger area and difficulties with the material growth plagues MCT detectors. The quantum …
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Unipolar barrier strained layer superlattice infrared photodiodes : physics and barrier engineering
… to 50 years old incumbent technology based on Mercury-Cadmium-Telluride (MCT) system. T2SL have been theoretically predicted to outperform MCTs. This dissertation has been aimed at improving the physical understanding and detector performance of T2SL detectors. This work has been focused on the …
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Characterization of, and novel architectures for, strained-layer superlattice infrared photodetectors
… made of an expensive II-VI material, HgCdTe (mercury cadmium telluride, MCT). A viable alternative class of materials, the III-V type-II superlattices (T2SLs), have been actively studied due to several potential and predicted advantages over MCT. T2SLs offer an easier path to the design of …
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Atomic structure and defects of III-V compound semiconductor strained-layer-superlattices for infrared detection
… for replacing current technology based on mercury cadmium telluride. When in contact, InAs and GaSb (or InAs and InAsSb) forms the broken-band alignment (type-II), which gives rise to a narrow effective energy band gap in a short period superlattice, thereby making it suitable for detecting …
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Longwave and bi-color type-II InAs/(In)GaSb superlattice infrared detectors
… in low bandgap semiconductors such as mercury cadmium telluride (MCT) or InSb or in intersubband transitions in hetero-engineered structures such as quantum well or quantum dot infrared photodetectors (QWIPs or QDIPs). These detectors operate at low temperatures (77 K-200 K) in order to …