OXYGEN IN LUMINESCENCE OF ZNSE(TE)

It was found that doping with tellurium affects the solubility of oxyg en in ZnSe[Te] single crystals grown from melts. This factor determine s the optical properties of the crystals. It was shown that, depending on the ratio [Te]/[O], different types of O-Te complexes-intrinsic po int defects-can form in the presence of an excess of zinc. The nature of the luminescence centers in ZnSe[Te] (O, Zn) (BE, 470-490, 550, 635 , 720, and 1300 nm bands) is discussed on the basis of the results of the investigation of the optical properties of the microstructure, tak ing into account the equilibrium of the intrinsic point defects. (C) 1 995 American Institute of Physics.