THERMOELECTRIC PROPERTIES OF THE CeBiTe₃ COMPOUND AND ITS RELEVANCE TO SUSTAINABLE ENERGY TECHNOLOGIES
Year: 2026
Type: article
Abstract: In this study, we investigate the phase equilibrium, synthesis, and thermoelectric properties of the CeBiTe₃ compound.CeBiTe₃ is formed in the quasi-binary Bi₂Te₃-Ce₂Te₃ section of the Ce-Bi-Te ternary system.Based on the obtained data, a phase diagram of the Bi₂Te₃-Ce₂Te₃ system was constructed.The temperature dependences of the electrical conductivity and thermoelectric force (Seebeck coefficient) were studied in the temperature range of 300-960 K.The band gap energy of CeBiTe₃ was estimated from the temperature dependence of electrical conductivity and found to be approximately 0.2 eV.The results demonstrate that CeBiTe₃ exhibits semimetallic behavior and is a promising thermoelectric material for mediumand high-temperature applications.It was found that CeBiTe₃ forms at 950 K in a 1:1 molar ratio and melts incongruently.The system is eutectic, with the eutectic reaction occurring at 800 K and a composition of 80 mol% Bi₂Te₃.The solubility limit of the solid solution at room temperature was found to be approximately 97 mol% Bi₂Te₃.In addition, the study contributes to the development of sustainable energy technologies through waste heat recovery and improved energy efficiency, in accordance with the United Nations Sustainable Development Goals (SDGs), particularly SDG 7 (Affordable and Clean Energy), SDG 9 (Industry, Innovation and Infrastructure), and SDG 13 (Climate Action).
Institution: Baku State University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7154064105