Phase equilibria in the systems CuInS₂-CdIn₂S₄ and СuGaS₂-CdGa₂S₄

Chem. Met. Alloys 1 (2008) 265-269

https://doi.org/10.30970/cma1.0060

V.R. KOZER, I.D. OLEKSEYUK, O.V. PARASYUK

Phase diagrams of the systems СuGaS₂-CdGa₂S₄ and CuInS₂-CdIn₂S₄ were constructed using results of DTA and X-ray phase analysis. These systems are of the eutectic type with coordinates of the eutectic point 68 mol.% CdGa₂S₄, 1215 K (СuGaS₂-CdGa₂S₄) and 45 mol.% CdIn₂S₄, 1275 K (CuInS₂-CdIn₂S₄). The solubility ranges of the boundary compounds were determined at 870 K. A mechanism for the formation of the solid solutions was proposed. It was proven that Cu atoms are replaced by Cd atoms in the position 4a in the structures of СuGaS₂ and CdIn₂S₄.

Phase diagram of the system CuInS₂-CdIn₂S₄: 1 – L, 2 – L+ γ, 3 – L+ δ, 4 – γ, 5 – γ+ δ, 6 – δ, 7 – β+γ, 8 – β, 9 – β+ δ, 10 – α+β, 11 – α, 12 – α+δ.

Keywords

Phase diagram / Solid solution / Crystal structure