Thermodynamic principles of the synthesis of CdTe, ZnTe, and CdZnTe solid solutions

Results of thermodynamic investigations of the P-T-X phase equilibria in Cd-Te, Zn-Te and Cd-Zn-Te systems carried out by measuring total vapor pressure in the 1–760 Torr (0.13–101 kPa) range at temperatures up to ∼1370 K are systematized. Concentration boundaries of the existence of intermediate phases with the compositions CdTe1±δ, ZnTe1±δ, and Cd1 − x Zn x Te1±δ (x = 0.05, 0.10, 0.15) are established. Vapor compositions in crystal-vapor equilibria are determined and isopleths of partial pressures for the CdTe1±δ and Cd1 − x ZnxTe1±δ (x = 0.05, 0.10, 0.15) systems are calculated. Being presented in an analytical form, the thermodynamic data provide a basis for targeted synthesis of the indicated compounds.