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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Alloys and Compounds for Thermoelectric and Solar Cell Applications VIII
Presentation Title D-9: Thermoelectric Properties of Multiply Doped Mg3(Sb, Bi)2
Author(s) Yasuo Shibata, Yuji Ohishi, Hiroaki Muta
On-Site Speaker (Planned) Yasuo Shibata
Abstract Scope Tamaki et al. reported that Te-doped Mg3(Sb, Bi)2 exhibited a very high ZT of 1.5 around 700 K with a largely enhanced electrical transport performance due to the significant valley degeneracy at the conduction band. According to Li’s first-principles calculation, when the carrier concentration reaches 4.8×1020 cm-3, the maximum ZT value of Mg3Sb2 can be enhanced by 88% compared with the reported value. However, this high carrier concentration has not been achieved in previous research. In the present study, we synthesized both cation and anion-site doped Mg3(Sb, Bi)2 in order to reach high carrier concentration.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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D-4: Assessment of Co-P Diffusion Barrier for Bismuth Telluride-based Thermoelectric Materials
D-6: Phase Diagram of Bi-Cu-Te and Thermoelectric Properties of Cu Doped Bi2Te3 Alloys
D-7: Phase Diagrams of Ag-Pb-Sn-Te System
D-8: Realizing the Microstructure in GeTe-based Thermoelectric Materials and Phase Transition Behavior
D-9: Thermoelectric Properties of Multiply Doped Mg3(Sb, Bi)2
Defect Formation Energies and Effective Masses in the Mg2(Si,Sn) Solid Solutions via DFT Calculations
Enhanced Averaged zT in n-type Bi2Te3 via Solubility Control
Gradient Composition Layered Microstructure Development in Thermoelectric Mg2(Si,Sn) Alloys Based on Phase Equilibrium
Heat Stability of Mg2Si1-xSnx as Affected by Heat Treatment Temperature and Duration
High Reliability Package of Perovskite Solar Cell by SiNx Passivation Layer with Sn-Bi-In Low-melting Solder
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Polar Tintermetallics as High Temperature Thermoelements
Portable Nanostructured Magneto-Thermoelectric Bi-Sb Alloys at Cryogenic Temperatures
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