Preparation and thermoelectric properties of novel Tellurium-based glassy semiconductors. (October 2021)

• Record Type: Journal Article
• Authors: Zhang, Huan; Zhang, Yaqi; Yu, Pengfei; Wang, Li-Min; Li, Gong
• Is Part Of: Scripta materialia. Number 203(2021)
• Publication Date: 2021-10
• Subjects: Amorphous materials -- Chalcogenid semiconductors -- Telluride glasses -- Thermoelectric materials; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2021.114038
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Vitrification of Tellurium-based(Te) chalcogenid semiconductors is explored as a new route to enhance their thermoelectric properties by maximizing the degree of structural disorder to produce the minimum thermal conductivity. Ga2 Te3 -SnTe systems are focused in this paper and the optimized glass-forming composition is identified. Complete bulk (Ga2 Te3 )34 (SnTe)66 glass is successfully prepared by a spark plasma sintering technique and exhibited an ultralow low thermal conductivity and high Seebeck coefficient. Together with the tunable electrical conductivity, the newly obtained Ga2 Te3 -SnTe glasses broaden the research scope of Te-based semiconductor glasses and also provide a new option for the development of high-performance thermoelectric materials. Graphical abstract: Image, graphical abstract