Optical transmittance of CdTe/HgCdTe/CdZnTe structures

The infrared (IR) optical transmittance of the liquid phase epitaxy (LPE) mono-crystalline p-type MCT (Hg1-xCdxTe (x » 0.28)) layers grown on (111) surface of dielectric single crystal substrates CZT (Cd0.96Zn0.04Te) having the same lattice constant as these epitaxial layers, was investigated. The infrared transparency characteristics of the uncoated MCT layers and those coated with thin (d » 410 nm) CdTe films in the spectral range of free carrier absorption were studied. The coated with CdTe MCT films shows the increase of transmission coefficients, which was quantitatively evaluated by the CdTe/MCT/CZT multilayered structures transparency characteristics in the air environment.