Major enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strain

Handle URI:
http://hdl.handle.net/10754/315726
Title:
Major enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strain
Authors:
Amin, B.; Alshareef, Husam N. ( 0000-0001-5029-2142 ) ; Schwingenschlögl, Udo ( 0000-0003-4179-7231 ) ; Singh, Nirpendra ( 0000-0001-8043-0403 ) ; Tritt, T. M.
Abstract:
The electronic structure and thermoelectric properties of strained (biaxially and uniaxially) Sr0.95Pr0.05TiO3 and SrTi0.95Nb0.05O3 are investigated in the temperature range from 300 K to 1200 K. Substitutions of Pr at the Sr site and Nb at the Ti site generate n-type doping and thus improve the thermoelectric performance as compared to pristine SrTiO3. Further enhancement is achieved by the application of strain, for example, of the Seebeck coefficient by 21% for Sr0.95Pr0.05TiO3 and 10% for SrTi0.95Nb0.05O3 at room temperature in the case of 5% biaxial strain. At 1200 K, we predict figures of merit of 0.58 and 0.55 for 2.5% biaxially strained Sr0.95Pr0.05TiO3 and SrTi0.95Nb0.05O3 , respectively, which are the highest values reported for rare earth doped SrTiO3.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Functional Nanomaterials and Devices Research Group; Materials Science and Engineering Program
Citation:
Amin B, Singh N, Tritt TM, Alshareef HN, Schwingenschlögl U (2013) Major enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strain. Appl Phys Lett 103: 031907. doi:10.1063/1.4815928.
Publisher:
AIP Publishing
Journal:
Applied Physics Letters
Issue Date:
16-Jul-2013
DOI:
10.1063/1.4815928
Type:
Article
ISSN:
00036951
Additional Links:
http://scitation.aip.org/content/aip/journal/apl/103/3/10.1063/1.4815928
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Functional Nanomaterials & Devices; Materials Science and Engineering Program; Computational Physics and Materials Science (CPMS)

Full metadata record

DC FieldValue Language
dc.contributor.authorAmin, B.en
dc.contributor.authorAlshareef, Husam N.en
dc.contributor.authorSchwingenschlögl, Udoen
dc.contributor.authorSingh, Nirpendraen
dc.contributor.authorTritt, T. M.en
dc.date.accessioned2014-04-13T07:19:31Z-
dc.date.available2014-04-13T07:19:31Z-
dc.date.issued2013-07-16en
dc.identifier.citationAmin B, Singh N, Tritt TM, Alshareef HN, Schwingenschlögl U (2013) Major enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strain. Appl Phys Lett 103: 031907. doi:10.1063/1.4815928.en
dc.identifier.issn00036951en
dc.identifier.doi10.1063/1.4815928en
dc.identifier.urihttp://hdl.handle.net/10754/315726en
dc.description.abstractThe electronic structure and thermoelectric properties of strained (biaxially and uniaxially) Sr0.95Pr0.05TiO3 and SrTi0.95Nb0.05O3 are investigated in the temperature range from 300 K to 1200 K. Substitutions of Pr at the Sr site and Nb at the Ti site generate n-type doping and thus improve the thermoelectric performance as compared to pristine SrTiO3. Further enhancement is achieved by the application of strain, for example, of the Seebeck coefficient by 21% for Sr0.95Pr0.05TiO3 and 10% for SrTi0.95Nb0.05O3 at room temperature in the case of 5% biaxial strain. At 1200 K, we predict figures of merit of 0.58 and 0.55 for 2.5% biaxially strained Sr0.95Pr0.05TiO3 and SrTi0.95Nb0.05O3 , respectively, which are the highest values reported for rare earth doped SrTiO3.en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/apl/103/3/10.1063/1.4815928en
dc.rightsArchived with thanks to Applied Physics Lettersen
dc.titleMajor enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strainen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentFunctional Nanomaterials and Devices Research Groupen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalApplied Physics Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Physics and Astronomy, Clemson University, SC 29634, United Statesen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAmin, Binen
kaust.authorSingh, Nirpendraen
kaust.authorAlshareef, Husam N.en
kaust.authorSchwingenschlögl, Udoen
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