Enhanced thermoelectric performance in spark plasma textured bulk n-type BiTe2.7Se0.3 and p-type Bi0.5Sb1.5Te3

Shekhar D. Bhame; Dhanapal Pravarthana; Wilfrid Prellier; Jacques G. Noudem

doi:10.1063/1.4807771

Enhanced thermoelectric performance in spark plasma textured bulk n-type BiTe2.7Se0.3 and p-type Bi0.5Sb1.5Te3

Materials Science 2013-06-03 v2

Authors: Shekhar D. Bhame , Dhanapal Pravarthana , Wilfrid Prellier , Jacques G. Noudem

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Abstract

Bulk p and n-type bismuth telluride were prepared using spark plasma texturization method. The texture development along the uniaxial load in the 001 direction is confirmed from both x-ray diffraction analysis and Electron Backscattering Diffraction measurements. Interestingly, those textured samples outperform the samples prepared by conventional spark plasma sintering (SPS) leading to a reduced thermal conductivity in the ab-plane. The textured samples of n- type BiTe2.7Se0.3 and p-type Bi0.5Sb1.5Te3 showed a 42% and 33% enhancement in figure of merit at room temperature respectively, as compared to their SPS counterparts, opening the route for applications.

Keywords

thermoelectric performance spark plasma texturization bismuth telluride thermal conductivity figure of merit texture development

Cite

@article{arxiv.1305.2280,
  title  = {Enhanced thermoelectric performance in spark plasma textured bulk n-type BiTe2.7Se0.3 and p-type Bi0.5Sb1.5Te3},
  author = {Shekhar D. Bhame and Dhanapal Pravarthana and Wilfrid Prellier and Jacques G. Noudem},
  journal= {arXiv preprint arXiv:1305.2280},
  year   = {2013}
}

Comments

This paper has been withdrawn due to a mistake in measurements

Enhanced thermoelectric performance in spark plasma textured bulk n-type BiTe2.7Se0.3 and p-type Bi0.5Sb1.5Te3

Abstract

Keywords

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