Enhanced thermoelectric performance in spark plasma textured bulk n -type BiTe 2.7 Se 0.3 and p-type Bi 0.5 Sb 1.5 Te 3 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Applied Physics Letters Année : 2013

Enhanced thermoelectric performance in spark plasma textured bulk n -type BiTe 2.7 Se 0.3 and p-type Bi 0.5 Sb 1.5 Te 3

Résumé

Bulk p and n-type bismuth tellurides 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.

Dates et versions

hal-02118489 , version 1 (03-05-2019)

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Citer

Shekhar Bhame, Dhanapal Pravarthana, Wilfrid Prellier, Jacques Noudem. Enhanced thermoelectric performance in spark plasma textured bulk n -type BiTe 2.7 Se 0.3 and p-type Bi 0.5 Sb 1.5 Te 3. Applied Physics Letters, 2013, 102 (21), pp.211901. ⟨10.1063/1.4807771⟩. ⟨hal-02118489⟩
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