Direct observation of the 3C-2H transformation in ZnSe by high-temperature x-ray diffraction

Quantum chemical calculations of the polymorphic phase transition temperatures of ZnS, ZnSe, and ZnTe crystals

“…The temperature dependence of the Gibbs energies for zinc chalcogenides for polymorphic crystals and the phase transition temperature "sphalerite-wurtzite" have been found. These results are consistent with the experimental values of the other works, which have a significant variation interval [2][3][4][5][6].…”

“…This phenomenon was explained by the increase in the binding energy in a series of ZnS-ZnSeZnTe. Note that according to [4,5] the transition temperature of ZnSe is greater than the phase transition temperature for ZnS, which in our opinion is less regular.…”

“…There are quite contradictory data about the polymorphism of zinc chalcogenides in the literature. According to [3], the polymorphic transition "sphalerite-wurtzite" for ZnS occurs at T m = 1250-1450 K, and for ZnSe at 1420-1713 K [4][5][6]. We were unable to find this information for ZnTe.…”

A simple approach to determine preferential growth orientation using multiple seed crystals with random orientations and its utilization for seed optimization to restrain polycrystallization of SiGe bulk crystal

“…Selection of orientations and resultant survival of preferential orientations are often observed during growth of polycrystals, such as thin films for electronic or photovoltaic applications, bulk crystal such as Si [14] and II-VI semiconductors [15,16]. Since the preferential orientation has the largest rate of the increase in the area fraction, we considered that it would be possible to suppress the spread of undesirable nucleus by utilizing a seed with the preferential orientation.…”

Bulk Crystal Growth of Wide-Bandgap II-VI Materials

“…However, the compositional deviation from the stoichiometry during melting, superheating and supercooling [32], and phase transformations [83] produce ZnSe bulk crystals containing twins and grain boundaries in very high density [84]. Here, special emphasis is focused on the vertical Bridgman (VB) method because it is hopeful to prepare large single crystals.…”