Effect of the Se → Te substitutions on thermal properties of binary Bi<sub>2</sub>Se<sub>3</sub> semiconductor
MODERN PHYSICS LETTERS B, vol.34, no.15, 2020 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 34 Issue: 15
- Publication Date: 2020
- Doi Number: 10.1142/s0217984920501560
- Journal Name: MODERN PHYSICS LETTERS B
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC, zbMATH
- Azerbaijan State University of Economics (UNEC) Affiliated: No
Abstract
Bi2Se3 and Bi2Se0.5Te2.5 compounds were synthesized and the thermophysical properties were investigated by differential thermal analysis. It was determined that the DSC spectrum of the Bi2Se3 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 Bi2Se0.5Te2.5 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.