EXPERIMENTAL-STUDY OF TERNARY M-ZN-SE (M=W, AU, IN, TI) PHASE-EQUILIBRIA

Ternary phase equilibria in the systems M-Zn-Se (M = W, Au, In, Ti) ar e studied by X-ray diffraction on samples annealed in silica capsules and quenched. Four isothermal phase diagram sections are presented and discussed. Only in the In-Zn-Se system a ternary compound is present (ZnIn2Se4). The metals W, Au and In are in equilibrium with the II-VI semiconductor ZnSe, whereas Ti and ZnSe are not in equilibrium. The pa rticular feature of the large Zn-solubility in solid (Au) does not mod ify the (Au)-ZnSe equilibrium, in contrast to the related Au-Cd-Te sys tem. Possible reactions at the metal/ZnSe interface in an open or clos ed environment are discussed based on the phase diagrams, and potentia l contact materials are indicated.