Thermoelectric Properties of the XCoSb (X: Ti,Zr,Hf) Half-Heusler Alloys

Handle URI:
http://hdl.handle.net/10754/625774
Title:
Thermoelectric Properties of the XCoSb (X: Ti,Zr,Hf) Half-Heusler Alloys
Authors:
Gandi, Appala; Schwingenschlögl, Udo ( 0000-0003-4179-7231 )
Abstract:
We investigate the thermoelectric properties of the half-Heusler alloys XCoSb (X: Ti,Zr,Hf) by solving Boltzmann transport equations and discuss them in terms of the electronic band structure. The rigid band approximation is employed to address the effects of doping. While many half-Heuser alloys show excellent thermoelectric performance, the materials under study are special by supporting both n- and p-doping. We identify the reasons for this balanced thermoelectric transport and explain why experimentally p-doping is superior to n-doping. We also determine the spectrum of phonon mean free paths to guide grain refinement methods to enhance the thermoelectric figure of merit.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Gandi AN, Schwingenschlögl U (2017) Thermoelectric Properties of the XCoSb (X: Ti,Zr,Hf) Half-Heusler Alloys. physica status solidi (b): 1700419. Available: http://dx.doi.org/10.1002/pssb.201700419.
Publisher:
Wiley-Blackwell
Journal:
physica status solidi (b)
Issue Date:
18-Sep-2017
DOI:
10.1002/pssb.201700419
Type:
Article
ISSN:
0370-1972
Sponsors:
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.
Additional Links:
http://onlinelibrary.wiley.com/doi/10.1002/pssb.201700419/full
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGandi, Appalaen
dc.contributor.authorSchwingenschlögl, Udoen
dc.date.accessioned2017-10-03T12:49:39Z-
dc.date.available2017-10-03T12:49:39Z-
dc.date.issued2017-09-18en
dc.identifier.citationGandi AN, Schwingenschlögl U (2017) Thermoelectric Properties of the XCoSb (X: Ti,Zr,Hf) Half-Heusler Alloys. physica status solidi (b): 1700419. Available: http://dx.doi.org/10.1002/pssb.201700419.en
dc.identifier.issn0370-1972en
dc.identifier.doi10.1002/pssb.201700419en
dc.identifier.urihttp://hdl.handle.net/10754/625774-
dc.description.abstractWe investigate the thermoelectric properties of the half-Heusler alloys XCoSb (X: Ti,Zr,Hf) by solving Boltzmann transport equations and discuss them in terms of the electronic band structure. The rigid band approximation is employed to address the effects of doping. While many half-Heuser alloys show excellent thermoelectric performance, the materials under study are special by supporting both n- and p-doping. We identify the reasons for this balanced thermoelectric transport and explain why experimentally p-doping is superior to n-doping. We also determine the spectrum of phonon mean free paths to guide grain refinement methods to enhance the thermoelectric figure of merit.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/pssb.201700419/fullen
dc.titleThermoelectric Properties of the XCoSb (X: Ti,Zr,Hf) Half-Heusler Alloysen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalphysica status solidi (b)en
kaust.authorGandi, Appalaen
kaust.authorSchwingenschlögl, Udoen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.