The intrinsic semiconductor alloy system Cdx Hgl-x Te is an important material for I.R detection. By changing the alloy composition x, the energy gap of Cdx Te can be varied and may be optimized for various wavelengths through the I.R spectrum. The most important wavelength ranges are the atmospheric windows 8-12 μ (x≈ 0,2) and 3-5 μ (x≈ 0,3) for thermal imaging and the 1,3-2,5 μ range (x ≈0,5 to 0,7) for optical fiber applications.
J L Dessus,
T Nguyen Duy,
J F Barbot,
"THM single crystal CMT material", Proc. SPIE 0659, Materials Technologies for Infrared Detectors, (22 November 1986); doi: 10.1117/12.938549; https://doi.org/10.1117/12.938549