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dc.contributor.authorAbutaha, Anas I.
dc.contributor.authorSarath Kumar, S. R.
dc.contributor.authorMehdizadeh Dehkordi, Arash
dc.contributor.authorTRITT, TERRY M.
dc.contributor.authorAlshareef, Husam N.
dc.date.accessioned2015-08-03T11:44:10Z
dc.date.available2015-08-03T11:44:10Z
dc.date.issued2014-10-17
dc.identifier.issn20507534
dc.identifier.doi10.1039/c4tc01723d
dc.identifier.urihttp://hdl.handle.net/10754/563253
dc.description.abstractWe demonstrate that the thermoelectric properties of epitaxial strontium titanate (STO) thin films can be improved by additional B-site doping of A-site doped ABO3 type perovskite STO. The additional B-site doping of A-site doped STO results in increased electrical conductivity, but at the expense of Seebeck coefficient. However, doping on both sites of the STO lattice significantly reduces the lattice thermal conductivity of STO by adding more densely and strategically distributed phononic scattering centers that attack wider phonon spectra. The additional B-site doping limits the trade-off relationship between the electrical conductivity and total thermal conductivity of A-site doped STO, leading to an improvement in the room-temperature thermoelectric figure of merit, ZT. The 5% Pr3+ and 20% Nb5+ double-doped STO film exhibits the best ZT of 0.016 at room temperature. This journal is
dc.description.sponsorshipThe authors acknowledge the financial support of the competitive Faculty Initiated Collaboration Grant from KAUST.
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleDoping site dependent thermoelectric properties of epitaxial strontium titanate thin films
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJ. Mater. Chem. C
dc.contributor.institutionDepartment of Physics and Astronomy, Clemson UniversitySC, United States
dc.contributor.institutionDepartment of Materials Science and Engineering, Clemson UniversitySC 29634, United States
kaust.personAbutaha, Anas I.
kaust.personSarath Kumar, S. R.
kaust.personAlshareef, Husam N.


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