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Rhombohedral to Cubic Conversion of GeTe via MnTe Alloying Leads to Ultralow Thermal Conductivity, Electronic Band Convergence, and High Thermoelectric Performance.

In this study, a series of GeMnTe (x = 0-0.21) compounds were prepared by a melting-quenching-annealing process combined with spark plasma sintering (SPS). The effect of alloying MnTe into GeTe on the structure and thermoelectric properties of GeMnTe is profound. With increasing content of MnTe, the...

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Published in:Journal of the American Chemical Society Vol. 140; no. 7; pp. 2673 - 2687
Main Authors: Zheng Zheng, Rigui Deng, Hongyao Xie, Wei Liu, Yonggao Yan, Xinfeng Tang, Xianli Su, Stoumpos, Constantinos, Kanatzidis, Mercouri G., Shiqiang Hao, Wolverton, Chris, Uher, Ctirad
Format: Article
Published: American Chemical Society 2/21/2018
Subjects:
Thermal conductivity
Thermoelectric materials
Annealing of metals
Density functional theory
Hematite
Online Access:View this record in EBSCOhost