Recent Progress on Extended Wavelength and Split-Off Band Heterostructure Infrared Detectors
نویسندگان
چکیده
منابع مشابه
Device modeling for split-off band detectors
An approach to develop room temperature detectors is to use transitions between the light/heavy hole bands and the split-off hole band to produce enhanced response at high temperature. Results are presented on a theoretical model to predict the response in these split-off detectors. The model calculates the dark and illuminated currents from the photoabsorption, carrier escape, and transport, e...
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1350-4495/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.infrared.2009.05.024 * Corresponding author. Tel.: +1 404 413 6037; fax E-mail address: [email protected] (A.G.U. Perera). A GaAs/AlGaAs heterojunction is used as a spin-split-off band IR detector operating at or around room temperature. This detector structure followed a similar layer architecture to the quantum well IR photo detect...
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The type III band alignment of HgTe/CdTe superlattices leads to the interesting possibility of achieving very long wavelength infrared (VLWIR) (15 μm and longer) cutoff wavelengths with either normal (HgTe layer thickness less than about 70 Å for CdTe layer thickness of 50 Å) or inverted (HgTe thickness greater than about 70 Å) band structures. The inverted band structure superlattices promise ...
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Cadmium telluride (CdTe) and cadmium zinc telluride (CdZnTe) have been regarded as promising semiconductor materials for hard X-ray and γray detection. The high atomic number of the materials (ZCd =48, ZTe=52) gives a high quantum efficiency in comparison with Si. The large band-gap energy (Eg ∼ 1.5 eV) allows us to operate the detector at room temperature. However, a considerable amount of cha...
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An advanced architectural platform based on wireless-enabled PON topologies is described. Network modelling of WiMAX channel transmission, based on FDM, over a multiwavelength, splitter-based PON has demonstrated EVMs below -30dB and error-free multipath transmission. ©2010 Optical Society of America OCIS codes: 060.4250 (Networks), 060.4510 (Optical communications)
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ژورنال
عنوان ژورنال: Micromachines
سال: 2020
ISSN: 2072-666X
DOI: 10.3390/mi11060547