Phase equilibria in the quasi-ternary system Ag2Se-Ga2Se3-In2Se3 and physical properties of (Ga0.6In0.4)2Se3, (Ga0.594In0.396Er0.01)2Se3 single crystals

The article reports for the first time the investigated liquidus surface projection of the Ag2Se-Ga2Se3-In2Se3 system and isothermal section at 820 K of the system. Five phase diagrams, six polythermal sections, isothermal section at 820 K and the liquidus surface projection were built at the first time. The existence of the large region of the solid solutions based on AgIn5Se8, Ga2Se3 and AgGa1−xInxSe2 was investigated. The existence of two ternary phases was established in the Ga2Se3-In2Se3 system. Two single crystals (Ga0.6In0.4)2Se3, (Ga0.594In0.396Er0.01)2Se3 were grown and some of optical properties of them were studied at first time.