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Cryogenic Super-Resolution Imaging of Local Photocurrent in Photoconductive Infrared Detectors [PDF]
SensorsThe uniformity of local photoelectric properties in infrared detectors is critical for detection sensitivity. However, micro-nano-scale surface abnormalities introduced during mercury cadmium telluride (HgCdTe) fabrication systematically degrade in-plane
Lei Ma +6 more
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Impact of Residual Compositional Inhomogeneities on the MCT Material Properties for IR Detectors [PDF]
SensorsHgCdTe is a well-known material for state-of-the-art infrared photodetectors. The interd-iffused multilayer process (IMP) is used for Metal–Organic Chemical Vapor Deposition (MOCVD) of HgCdTe heterostructures, enabling precise control of composition.
Jan Sobieski +5 more
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Infrared HOT Photodetectors: Status and Outlook [PDF]
Sensors, 2023 At the current stage of long-wavelength infrared (LWIR) detector technology development, the only commercially available detectors that operate at room temperature are thermal detectors.
Antoni Rogalski +3 more
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nBn HgCdTe infrared detector with HgTe(HgCdTe)/CdTe SLs barrier [PDF]
Optical and Quantum Electronics, 2016 Several strategies have been implemented to improve the performance of infrared single pixel detectors at higher operating temperature condition. The most efficient and effective in HgCdTe technology are: non-equilibrium architectures and currently an idea of the barrier detector to include unipolar and complementary structures.
Paweł Madejczyk +2 more
exaly +2 more sources
Temperature-driven massless Kane fermions in HgCdTe crystals
Nature Communications, 2016 Kane fermions are predicted to be tunable with external parameters such as temperature. Here, Teppe et al. show a band structure evolution of bulk HgCdTe as temperature is tuned across topological phase transition, demonstrating that Kane fermions change
F. Teppe +17 more
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High-sensitivity, high-speed, broadband mid-infrared photodetector enabled by a van der Waals heterostructure with a vertical transport channel [PDF]
Nature CommunicationsThe realization of room-temperature-operated, high-performance, miniaturized, low-power-consumption and Complementary Metal-Oxide-Semiconductor (CMOS)-compatible mid-infrared photodetectors is highly desirable for next-generation optoelectronic ...
Jianfeng Wu +18 more
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Review of Photodetectors for Space Lidars [PDF]
SensorsPhotodetectors play a critical role in space lidars designed for scientific investigations from orbit around planetary bodies. The detectors must be highly sensitive due to the long range of measurements and tight constraints on the size, weight, and ...
Xiaoli Sun
doaj +2 more sources
MRS Proceedings, 1983 ABSTRACTA time delay has been observed in HgCdTe in the photoplastic response of these crystals. Both the magnitude of the time delay and the total change in stress, Δσ, are dependent on the wavelength of the light. These observations provide a basis for establishing that the photoplastic process is a dynamic one, in contrast to prior treatments of the
J. M. Galligan, J. Pellegrino, T. Manzur
openaire +2 more sources
Magnetoconductivity and Terahertz Response of a HgCdTe Epitaxial Layer
Sensors, 2018 An epitaxial layer of HgCdTe—a THz detector—was studied in magnetotransmission, magnetoconductivity and magnetophotoconductivity experiments at cryogenic temperatures.
Dvoretskii S A Dvoretsky S A +2 more
exaly +3 more sources
Can graphene make better HgCdTe infrared detectors?
Nanoscale Research Letters, 2011 We develop a simple and low-cost technique based on chemical vapor deposition from which large-size graphene films with 5-10 graphene layers can be produced reliably and the graphene films can be transferred easily onto HgCdTe (MCT) thin wafers at room ...
Shi Yanli +4 more
doaj +1 more source