Effect of Zinc Atmosphere upon Doping ZnSe : Fe Crystals on the Composition and Distribution of Impurity-Defect Centers

Zinc selenide crystals doped with iron by high-temperature diffusion in zinc and argon atmospheres are studied by the two-photon confocal microscopy. The effect of the atmosphere on the spectra and spatial distribution of two-photon excited luminescence in the range from 425 to 725 nm is studied. It is shown that doping with zinc results in the absence of impurity-defect centers formed in samples doped in an inert argon atmosphere.