Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: Study on anisotropy of n-type Mg3Sb2-based thermoelectric materials

Journal Article · · Applied Physics Letters
DOI: https://doi.org/10.1063/1.5000053 · OSTI ID:1540123
 [1];  [2];  [2];  [2]; ORCiD logo [2];  [2];  [2];  [3];  [2]
  1. Xihua Univ., Chengdu (China); Univ. of Houston, Houston, TX (United States)
  2. Univ. of Houston, Houston, TX (United States)
  3. Xihua Univ., Chengdu (China)
+ Show Author Affiliations

The recent discovery of a high thermoelectric figure of merit (ZT) in an n-type Mg3Sb2-based Zintl phase triggered an intense research effort to pursue even higher ZT. Based on our previous report on Mg3.1Nb0.1Sb1.5Bi0.49Te0.01, we report here that partial texturing in the (001) plane is achieved by double hot pressing, which is further confirmed by the rocking curves of the (002) plane. The textured samples of Mg3.1Nb0.1Sb1.5Bi0.49Te0.01 show a much better average performance in the (00l) plane. Hall mobility is significantly improved to ~105 cm2 V-1 s-1 at room temperature in the (00l) plane due to texturing, resulting in higher electrical conductivity, a higher power factor of ~18 μW cm-1K-2 at room temperature, and also higher average ZT. This work shows that texturing is good for higher thermoelectric performance, suggesting that single crystals of n-type Mg3Sb2-based Zintl compounds are worth pursuing.

Research Organization:
Univ. of Houston, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0010831
OSTI ID:
1540123
Journal Information:
Applied Physics Letters, Vol. 112, Issue 9; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

References (26)

Defect Chemistry for Thermoelectric Materials journal November 2016
Nanoporous PbSe-SiO 2 Thermoelectric Composites journal August 2017
Ultralow Thermal Conductivity in Disordered, Layered WSe2 Crystals journal January 2007
Anomalous electrical conductivity of n-type Te-doped Mg3.2Sb1.5Bi0.5 journal December 2017
Manipulation of ionized impurity scattering for achieving high thermoelectric performance in n-type Mg 3 Sb 2 -based materials journal September 2017
Enhanced stability and thermoelectric figure-of-merit in copper selenide by lithium doping journal June 2017
Tuning the carrier concentration using Zintl chemistry in Mg 3 Sb 2 , and its implications for thermoelectric figure-of-merit journal January 2016
Discovery of high-performance low-cost n-type Mg3Sb2-based thermoelectric materials with multi-valley conduction bands journal January 2017
Dense dislocation arrays embedded in grain boundaries for high-performance bulk thermoelectrics journal April 2015
Recent progress of half-Heusler for moderate temperature thermoelectric applications journal October 2013
Cubic AgPbmSbTe2+m: Bulk Thermoelectric Materials with High Figure of Merit journal February 2004
High Thermoelectric Performance Realized in a BiCuSeO System by Improving Carrier Mobility through 3D Modulation Doping journal September 2014
Superparamagnetic enhancement of thermoelectric performance journal September 2017
Tuning Multiscale Microstructures to Enhance Thermoelectric Performance of n-Type Bismuth-Telluride-Based Solid Solutions journal June 2015
Achieving high power factor and output power density in p-type half-Heuslers Nb 1-x Ti x FeSb journal November 2016
Isotropic Conduction Network and Defect Chemistry in Mg 3+ δ Sb 2 -Based Layered Zintl Compounds with High Thermoelectric Performance journal September 2016
Band Engineering of Thermoelectric Materials journal October 2012
Experimental Studies on Anisotropic Thermoelectric Properties and Structures of n-Type Bi2Te2.7Se0.3 journal September 2010
Thermoelectric properties of n-type Bi 2 Te 2.7 Se 0.3 with addition of nano-ZnO:Al particles journal July 2014
Studies on thermoelectric figure of merit of Na-doped p-type polycrystalline SnSe journal January 2016
High-Performance Low-Cost n-Type Se-Doped Mg 3 Sb 2 -Based Zintl Compounds for Thermoelectric Application journal May 2017
Defect Engineering for Realizing High Thermoelectric Performance in n-Type Mg 3 Sb 2 -Based Materials journal September 2017
Texturation boosts the thermoelectric performance of BiCuSeO oxyselenides journal January 2013
Enhanced thermoelectric and mechanical properties in textured n-type Bi2Te3 prepared by spark plasma sintering journal May 2008
Tuning the carrier scattering mechanism to effectively improve the thermoelectric properties journal January 2017
Deformation mechanisms in high-efficiency thermoelectric layered Zintl compounds journal January 2017

Cited By (4)

Mg 3+ δ Sb x Bi 2− x Family: A Promising Substitute for the State-of-the-Art n-Type Thermoelectric Materials near Room Temperature journal December 2018
Enhanced Thermoelectric Properties of n‐type Mg 3 Sb 2 by Excess Magnesium and Tellurium Doping journal January 2019
Energy Efficiency of Anisotropic Thermoelectric Materials Under Three-Dimensional Conditions journal November 2019
Insights into the design of thermoelectric Mg3Sb2 and its analogs by combining theory and experiment journal July 2019

Similar Records

Related Subjects

36 MATERIALS SCIENCE
Physics