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Title: Oxygen partial pressure dependence of thermoelectric power factor in polycrystalline n -type SrTiO 3 : Consequences for long term stability in thermoelectric oxides

Authors:
 [1];  [1];  [1]
  1. Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1361857
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 17; Related Information: CHORUS Timestamp: 2018-02-14 15:28:04; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Sharma, Peter A., Brown-Shaklee, Harlan J., and Ihlefeld, Jon F. Oxygen partial pressure dependence of thermoelectric power factor in polycrystalline n -type SrTiO 3 : Consequences for long term stability in thermoelectric oxides. United States: N. p., 2017. Web. doi:10.1063/1.4982239.
Sharma, Peter A., Brown-Shaklee, Harlan J., & Ihlefeld, Jon F. Oxygen partial pressure dependence of thermoelectric power factor in polycrystalline n -type SrTiO 3 : Consequences for long term stability in thermoelectric oxides. United States. doi:10.1063/1.4982239.
Sharma, Peter A., Brown-Shaklee, Harlan J., and Ihlefeld, Jon F. Mon . "Oxygen partial pressure dependence of thermoelectric power factor in polycrystalline n -type SrTiO 3 : Consequences for long term stability in thermoelectric oxides". United States. doi:10.1063/1.4982239.
@article{osti_1361857,
title = {Oxygen partial pressure dependence of thermoelectric power factor in polycrystalline n -type SrTiO 3 : Consequences for long term stability in thermoelectric oxides},
author = {Sharma, Peter A. and Brown-Shaklee, Harlan J. and Ihlefeld, Jon F.},
abstractNote = {},
doi = {10.1063/1.4982239},
journal = {Applied Physics Letters},
number = 17,
volume = 110,
place = {United States},
year = {Mon Apr 24 00:00:00 EDT 2017},
month = {Mon Apr 24 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4982239

Citation Metrics:
Cited by: 1work
Citation information provided by
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  • We present an investigation of the thermoelectric properties of cubic perovskite SrTiO 3. The results are derived from a combination of calculated transport functions obtained from Boltzmann transport theory in the constant scattering time approximation based on the electronic structure and existing experimental data for La-doped SrTiO 3. The figure of merit ZT is modeled with respect to carrier concentration and temperature. The model predicts a relatively high ZT at optimized doping and suggests that the ZT value can reach 0.7 at T = 1400 K. Thus ZT can be improved from the current experimental values by carrier concentration optimization.
    Cited by 10
  • We present an investigation of the thermoelectric properties of cubic perovskite SrTiO 3. The results are derived from a combination of calculated transport functions obtained from Boltzmann transport theory in the constant scattering time approximation based on the electronic structure and existing experimental data for La-doped SrTiO 3. The figure of merit ZT is modeled with respect to carrier concentration and temperature. The model predicts a relatively high ZT at optimized doping and suggests that the ZT value can reach 0.7 at T = 1400 K. Thus ZT can be improved from the current experimental values by carrier concentration optimization.
  • Cited by 10
  • Iodine-doped n-type SnSe polycrystalline by melting and hot pressing is prepared. The prepared material is anisotropic with a peak ZT of ≈0.8 at about 773 K measured along the hot pressing direction. This is the first report on thermoelectric properties of n-type Sn chalcogenide alloys. With increasing content of iodine, the carrier concentration changed from 2.3 × 10 17 cm -3 (p-type) to 5.0 × 10 15 cm -3 (n-type) then to 2.0 × 10 17 cm -3 (n-type). The decent ZT is mainly attributed to the intrinsically low thermal conductivity due to the high anharmonicity of the chemical bondsmore » like those in p-type SnSe. By alloying with 10 at% SnS, even lower thermal conductivity and an enhanced Seebeck coefficient were achieved, leading to an increased ZT of ≈1.0 at about 773 K measured also along the hot pressing direction.« less