Discovery of high-performance low-cost n-type Mg3Sb2-based thermoelectric materials with multi-valley conduction bands

Jiawei Zhang; Lirong Song; Steffen Hindborg Pedersen; Hao Yin; Le Thanh Hung; Bo Brummerstedt Iversen

doi:10.1038/ncomms13901

Nature Communications (Jan 2017)

Discovery of high-performance low-cost n-type Mg3Sb2-based thermoelectric materials with multi-valley conduction bands

Jiawei Zhang,
Lirong Song,
Steffen Hindborg Pedersen,
Hao Yin,
Le Thanh Hung,
Bo Brummerstedt Iversen

Affiliations

Jiawei Zhang: Department of Chemistry and iNANO, Center for Materials Crystallography, Aarhus University
Lirong Song: Department of Chemistry and iNANO, Center for Materials Crystallography, Aarhus University
Steffen Hindborg Pedersen: Department of Chemistry and iNANO, Center for Materials Crystallography, Aarhus University
Hao Yin: Department of Chemistry and iNANO, Center for Materials Crystallography, Aarhus University
Le Thanh Hung: Department of Energy Conversion and Storage, Technical University of Denmark
Bo Brummerstedt Iversen: Department of Chemistry and iNANO, Center for Materials Crystallography, Aarhus University

DOI: https://doi.org/10.1038/ncomms13901
Journal volume & issue: Vol. 8, no. 1
pp. 1 – 8

Abstract

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Zintl-phase thermoelectrics are predominantly p-type. Here, Zhanget al. use tellurium to n-dope Mg3Sb1.5Bi0.5and obtain thermoelectric figures of merit up to 1.6 at 700 K. Calculations show that these performances result from a conduction band with sixfold valley degeneracy.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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