Preparation of lamellar crystals in the CdS-CdSe system from gas flow

Scaly crystals of solid solutions of CdS-CdSe have been obtained from the gas phase. Formulas for calculating the component ratios in the reaction zone from known speeds of the carrier gas, evaporation and growth temperatures, and equilibrium vapor pressures have been proposed. As can be inferred from calculations based on these formulas, the maximum of formation of scaly crystals corresponds to an almost stoichiometric vapor phase composition. In the examined system, the ratio between the sulfur atom fractions in vapor and in crystals is 0.9, in the range of CdS concentrations from 0 to 70 mol.%, which permits calculation of the composition of the crystals from the initial experiment conditions