The phase diagrams of the CdS-CdSe-CdTe pseudoternary system at 708ﾟC, 758ﾟC and 808ﾟC

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The phase diagrams of the CdS-CdSe-CdTe pseudoternary system at 708ﾟC, 758ﾟC and 808ﾟC were investigated by X-ray diffraction measurement.The samples were annealed at each temperatures for 1000 hours and quenched.At 808ﾟCzincblende type single-phase region, wurtzite single-phase region and two two-phase regions exist.At 758ﾟC and 708ﾟCzincblend type single-phase region, wurtzite type single-phase region and a two-phase region exist.And an isothermal evaporation method by means of a Knudsen cell-mass spectrometer combination has been applied to the determination of the phase boundary of the CdS rich side in the CdS-CdSe-CdTe system at the temperature of 688ﾟC.The phase boundary was determined by measuring the change of ion intensities as a function of composition.