Influence of Annealing in Zinc Vapor on the Microstructure and Activator Radiation of ZnSe : Fe

Crystallography Reports - The effect of thermal treatment in zinc vapor on the stoichiometry, defect and impurity structure, and activator cathodoluminescence of ZnSe doped with iron by the thermal...     

Studying the characteristics of the photosensitive elements of photodetector matrices based on Si Pt: Si by means of induced potential and transmission electron microscopy

The prospects for the combined use of scanning and transmission electron microscopy in studying defects in the matrix elements of the infrared photodetectors are considered. It is shown that combining these techniques allows us to fully realize the potential of high-voltage transmission microscopy for detecting defects that impair matrix parameters.     

EPR diagnostics of laser materials based on ZnSe crystals doped with transition elements

The electron paramagnetic resonance (EPR) spectra observed in laser materials based on zinc selenide (ZnSe) crystals doped with transition elements have been analyzed and identified. It has been shown that, in addition to working impurities (Cr²⁺, Co²⁺, or Fe²⁺), the diffusion layer exhibits EPR spectra of accompanying impurities due to the diffusion of transition elements (chromium, cobalt, or iron) used in the preparation of active materials for quantum electronics (lasers, switches) operating in the mid-infrared range. EPR diagnostics of these impurities can be used in the development of appropriate regimes for minimizing concentrations of accompanying impurities that adversely affect the performance characteristics of laser materials. It has been found that, during the diffusion of transition metals, ions of the accompanying impurity Mn²⁺, which is characterized by extremely informative EPR spectra, are embedded in the crystal lattice. It has been proposed to use these ions as ideal markers to control, on the electronic level, the crystal structure of the active diffusion layer.