Significant enhancement in thermoelectric properties of polycrystalline Pr-doped SrTiO3−δ ceramics originating from nonuniform distribution of Pr dopants

Handle URI:
http://hdl.handle.net/10754/552160
Title:
Significant enhancement in thermoelectric properties of polycrystalline Pr-doped SrTiO3−δ ceramics originating from nonuniform distribution of Pr dopants
Authors:
Dehkordi, Arash Mehdizadeh; Bhattacharya, Sriparna; He, Jian; Alshareef, Husam N. ( 0000-0001-5029-2142 ) ; Tritt, Terry M.
Abstract:
Recently, we have reported a significant enhancement ( >70% at 500 °C) in the thermoelectric power factor (PF) of bulk polycrystalline Pr-doped SrTiO3 ceramics employing a novel synthesis strategy which led to the highest ever reported values of PF among doped polycrystalline SrTiO3. It was found that the formation of Pr-rich grain boundary regions gives rise to an enhancement in carrier mobility. In this Letter, we investigate the electronic and thermal transport in Sr1− x Pr x TiO3 ceramics in order to determine the optimum doping concentration and to evaluate the overall thermoelectric performance. Simultaneous enhancement in the thermoelectric power factor and reduction in thermal conductivity in these samples resulted in more than 30% improvement in the dimensionless thermoelectric figure of merit (ZT) for the whole temperature range over all previously reported maximum values. Maximum ZT value of 0.35 was obtained at 500 °C.
KAUST Department:
Materials Science and Engineering Program
Citation:
Significant enhancement in thermoelectric properties of polycrystalline Pr-doped SrTiO3−δ ceramics originating from nonuniform distribution of Pr dopants 2014, 104 (19):193902 Applied Physics Letters
Publisher:
AIP Publishing
Journal:
Applied Physics Letters
Issue Date:
12-May-2014
DOI:
10.1063/1.4875925
Type:
Article
ISSN:
0003-6951; 1077-3118
Additional Links:
http://scitation.aip.org/content/aip/journal/apl/104/19/10.1063/1.4875925
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorDehkordi, Arash Mehdizadehen
dc.contributor.authorBhattacharya, Sriparnaen
dc.contributor.authorHe, Jianen
dc.contributor.authorAlshareef, Husam N.en
dc.contributor.authorTritt, Terry M.en
dc.date.accessioned2015-05-04T16:11:14Zen
dc.date.available2015-05-04T16:11:14Zen
dc.date.issued2014-05-12en
dc.identifier.citationSignificant enhancement in thermoelectric properties of polycrystalline Pr-doped SrTiO3−δ ceramics originating from nonuniform distribution of Pr dopants 2014, 104 (19):193902 Applied Physics Lettersen
dc.identifier.issn0003-6951en
dc.identifier.issn1077-3118en
dc.identifier.doi10.1063/1.4875925en
dc.identifier.urihttp://hdl.handle.net/10754/552160en
dc.description.abstractRecently, we have reported a significant enhancement ( >70% at 500 °C) in the thermoelectric power factor (PF) of bulk polycrystalline Pr-doped SrTiO3 ceramics employing a novel synthesis strategy which led to the highest ever reported values of PF among doped polycrystalline SrTiO3. It was found that the formation of Pr-rich grain boundary regions gives rise to an enhancement in carrier mobility. In this Letter, we investigate the electronic and thermal transport in Sr1− x Pr x TiO3 ceramics in order to determine the optimum doping concentration and to evaluate the overall thermoelectric performance. Simultaneous enhancement in the thermoelectric power factor and reduction in thermal conductivity in these samples resulted in more than 30% improvement in the dimensionless thermoelectric figure of merit (ZT) for the whole temperature range over all previously reported maximum values. Maximum ZT value of 0.35 was obtained at 500 °C.en
dc.publisherAIP Publishingen
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/apl/104/19/10.1063/1.4875925en
dc.rightsArchived with thanks to Applied Physics Lettersen
dc.titleSignificant enhancement in thermoelectric properties of polycrystalline Pr-doped SrTiO3−δ ceramics originating from nonuniform distribution of Pr dopantsen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalApplied Physics Lettersen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, USAen
dc.contributor.institutionDepartment of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USAen
dc.contributor.institutionDepartment of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USAen
dc.contributor.institutionDepartment of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634, USAen
kaust.authorAlshareef, Husam N.en
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