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20 April 2024

» arxiv » 1305.2280

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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 ;
Date:	10 May 2013
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.
Source:	arXiv, 1305.2280
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