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Improved Thermoelectric Properties in Lu-doped Yb_(14)MnSb_(11) Zintl Compounds

Yu, Cui and Chen, Yi and Xie, Hanhui and Snyder, G. Jeffrey and Fu, Chenguang and Xu, Jinshu and Zhao, Xinbing and Zhu, Tiejun (2012) Improved Thermoelectric Properties in Lu-doped Yb_(14)MnSb_(11) Zintl Compounds. Applied Physics Express, 5 (3). Art. No. 031801. ISSN 1882-0778 . http://resolver.caltech.edu/CaltechAUTHORS:20120409-131611140

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Abstract

The thermoelectric transport properties of Lu-doped Yb_(14)MnSb_(11) Zintl compounds have been investigated. The electrical conductivity increased and the Seebeck coefficient decreased with increasing Lu doping content, due to an increased carrier concentration. The carrier mobility behavior was in good accordance with the single parabolic band model. It is suggested that Lu doping simply shifts the Fermi energy with the band structure minimally altered. The lattice thermal conductivity roughly decreased via Lu doping. The maximum dimensionless figure of merit ZT of the Lu-doped samples was improved by ∼30% at 670 K, compared with that without doping.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1143/APEX.5.031801 DOIUNSPECIFIED
http://apex.jsap.jp/link?APEX/5/031801/PublisherUNSPECIFIED
Additional Information:© 2012 The Japan Society of Applied Physics. Received January 12, 2012; accepted January 27, 2012; published online February 14, 2012. The work is supported by NSFCs (51171171, 50971115, and 51101139), the National ‘‘973’’ Program (2007CB607502), and Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China (NSFC)51171171
National Natural Science Foundation of China (NSFC)50971115
National Natural Science Foundation of China (NSFC)51101139
National ‘‘973’’ Program 2007CB607502
Zhejiang University Cyrus Tang Center for Sensor Materials and ApplicationsUNSPECIFIED
Record Number:CaltechAUTHORS:20120409-131611140
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120409-131611140
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:30040
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:10 Apr 2012 21:26
Last Modified:23 Aug 2016 10:11

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