Determination of general and specific properties of wide energy-band gap HgCdTe in the 1 to 2 micrometer wavelength range

Physics – Optics

Scientific paper

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Avalanche Diodes, Electro-Optics, Electroluminescence, Electronic Spectra, Energy Gaps (Solid State), Mercury Cadmium Tellurides, Photodiodes, Energy Bands, Infrared Detectors, Light Emission, Light Emitting Diodes, Metal Spinning, Optical Coupling

Scientific paper

The metallurgical process of Wide Band Gap Mercury Cadmium Telluride (WBHCT) compound fabrication is briefly reviewed. Special emphasis is given to the Traveling Heater Method (THM) for HgCdTe growth. Physical and electronic properties are analyzed with particular attention to properties that apply to optoelectronic devices. Some special features, such as low intrinsic concentration, low band gap temperature coefficient and matching of band gap to spin orbit coupling appear to be of particular and unique interest in the fabrication of avalanche photodiodes (APD) in this spectral region. Electroluminescent properties have also been investigated. Light-emitting structures are discussed.

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