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

Bin Amin; Husam N. Alshareef; Udo Schwingenschlögl; Nirpendra Singh; T. M. Tritt

doi:10.1063/1.4815928

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

Bin Amin, Husam N. Alshareef, Udo Schwingenschlögl, Nirpendra Singh, T. M. Tritt

Research output: Contribution to journal › Article › peer-review

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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.

Original language	English (US)
Pages (from-to)	031907
Journal	Applied Physics Letters
Volume	103
Issue number	3
DOIs	https://doi.org/10.1063/1.4815928
State	Published - Jul 16 2013

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Physics and Astronomy (miscellaneous)

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https://repository.kaust.edu.sa/bitstream/10754/315726/1/Major%20enhancement%20of%20the%20thermoelectric%20performance%20in%20Pr%20Nb-doped%20SrTiO3%20under%20strain.pdf

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title = "Major enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strain",

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.",

author = "Bin Amin and Alshareef, {Husam N.} and Udo Schwingenschl{\"o}gl and Nirpendra Singh and Tritt, {T. M.}",

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T1 - Major enhancement of the thermoelectric performance in Pr/Nb-doped SrTiO3 under strain

AU - Amin, Bin

AU - Alshareef, Husam N.

AU - Schwingenschlögl, Udo

AU - Singh, Nirpendra

AU - Tritt, T. M.

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2013/7/16

Y1 - 2013/7/16

N2 - 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.

AB - 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.

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U2 - 10.1063/1.4815928

DO - 10.1063/1.4815928

M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

ER -

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

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