Optical and structural properties of Hg$_{0.7}$Cd$_{0.3}$Te epitaxial films

The results of comparative studies of the optical and structural properties of Hg$_{0.7}$Cd$_{0.3}$Te bulk crystals and epitaxial films grown by various methods are presented. The data of photoluminescence studies performed in the temperature range 4.2–300K showed the similarity of the optical properties of different samples and indicated a significant disordering of the solid solution. According to X-ray diffraction data, however, the scale of the disordering was not directly related to the structural quality of the material. The prospects for using the material grown by various methods in optoelectronics applications are discussed.