Effect of the Se → Te substitutions on thermal properties of binary Bi2Se3 semiconductor

Abstract

[Formula: see text] and [Formula: see text] compounds were synthesized and the thermophysical properties were investigated by differential thermal analysis. It was determined that the DSC spectrum of the [Formula: see text] compounds is divided into three regions. The first region was explained by the splitting of water and hydroxide groups in the compound, and the second and third regions with phase transitions. The DSC spectrum of the [Formula: see text] compound was somewhat simpler. The spectrum, divided into two regions, consisted of the first region observed by the decomposition of the water and hydroxide group, and the second region corresponding to the phase transition. Thermodynamic parameters of phase transitions, enthalpy and free energy, were determined.