Thermoelectric Properties of Nanostructured Bismuth-Doped Lead Telluride Bi x (PbTe)1−x Prepared by Co-Ball-Milling

Falkenbach, Oliver; Klar, Peter J.; Koch, Guenter; Schlecht, Sabine

doi:10.1007/s11664-013-2832-4

Cited by 16 publications

(2 citation statements)

References 25 publications

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“…Co-ball-milling was performed by mixing both of the obtained polycrystalline powders [22]. These isostructural tellurides were milled under the same conditions as for the mechanical alloying, followed by an annealing step, as described above.…”

Section: Synthesesmentioning

confidence: 99%

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSn_mSbTe_2+m(TAST-m)

Falkenbach¹,

Schmitz²,

Dankwort³

et al. 2014

Semicond. Sci. Technol.

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Tin telluride doped with silver antimony telluride (Tin-Antimony-Silver-Tellurium, TAST-m) was prepared by two mechanochemical methods: mechanical alloying and-as an alternative synthetic route-co-ball-milling, a recently developed way of combining the procedures of mechanical alloying of single elements with the usual ball-milling of polycrystalline compounds. For the two series of products with varying degrees of doping, three different compacting techniques, cold-pressing/annealing (CPA), hot-pressing (HP) and short-term sintering (STS), were applied, and their influence on the thermoelectric properties was investigated. Although short-term sintering seemed to be the most advantageous method in most cases, the influence of the density of an individual pellet on the thermoelectric transport properties needs to be considered. A structural characterization of the different series of nanopowders obtained by the two milling methods was carried out by x-ray diffraction (XRD) and transmission electron microscopy (TEM) studies. The latter also allowed further insight into the microstructure and revealed a homogeneous distribution of silver and antimony in the tin telluride matrix.

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Section: Synthesesmentioning

confidence: 99%

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSn_mSbTe_2+m(TAST-m)

Falkenbach¹,

Schmitz²,

Dankwort³

et al. 2014

Semicond. Sci. Technol.

Self Cite

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“…The impedance mismatch between the PbTe and PbS rich phases in (Pb 0.95 Sn 0.05 Te) 1−x (PbS) x samples led to an inhibition of the heat flow, with the lattice thermal conductivity reaching 0.4 W•m −1 •K −1 for the sample with 8% PbS, an 80% reduction in the reported values for the bulk material [169]. In general, phonon scattering has proven to be an effective strategy to reduce the lattice thermal conductivity in multiphase lead telluride-based materials [170][171][172][173] and bismuth telluride-based [174][175][176] materials. For instance, nano-engineered multiphase PbTe-x% InSb compounds showed an exceptionally low minimum lattice thermal conductivity of ~0.3 W•m −1 •K −1 at ~770 K for 4% InSb and consequently a zT value of ~1.83 at 770 K [177].…”

Section: Phonon Scatteringmentioning

confidence: 99%

Recent Progress in Multiphase Thermoelectric Materials

Fortulan

Yamini

2021

Materials

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Thermoelectric materials, which directly convert thermal energy to electricity and vice versa, are considered a viable source of renewable energy. However, the enhancement of conversion efficiency in these materials is very challenging. Recently, multiphase thermoelectric materials have presented themselves as the most promising materials to achieve higher thermoelectric efficiencies than single-phase compounds. These materials provide higher degrees of freedom to design new compounds and adopt new approaches to enhance the electronic transport properties of thermoelectric materials. Here, we have summarised the current developments in multiphase thermoelectric materials, exploiting the beneficial effects of secondary phases, and reviewed the principal mechanisms explaining the enhanced conversion efficiency in these materials. This includes energy filtering, modulation doping, phonon scattering, and magnetic effects. This work assists researchers to design new high-performance thermoelectric materials by providing common concepts.

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Thermoelectric Enhancement of Different Kinds of Metal Chalcogenides

Han

Sun

et al. 2016

Advanced Energy Materials

173

114

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Due to the urgency of our energy and environmental issues, a variety of cost-effective and pollution-free technologies have attracted considerable attention, among which thermoelectric technology has made enormous progress. Substantial numbers of new thermoelectric materials are created with high figure of merit (ZT) by using advanced nanoscience and nanotechnology. This is especially true in the case of metalchalcogenide-based materials, which possess both relatively high ZT and low cost among all the different kinds of thermoelectric materials. Here, comprehensive coverage of recent advances in metal chalcogenides and their correlated thermoelectric enhancement mechanisms are provided. Several new strategies are summarized with the hope that they can inspire further enhancement of performance, both in metal chalcogenides and in other materials. Disciplines Engineering | Physical Sciences and Mathematics Publication DetailsHan, C., Sun, Q., Li, Z. & Dou, S. X. (2016) Several new strategies are summarized with the hope that they can inspire further enhancement of performance, both in metal chalcogenides and in other materials.2

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Thermoelectric Properties of Nanostructured Bismuth-Doped Lead Telluride Bi x (PbTe)1−x Prepared by Co-Ball-Milling

Cited by 16 publications

References 25 publications

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSn_mSbTe_2+m(TAST-m)

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSn_mSbTe_2+m(TAST-m)

Recent Progress in Multiphase Thermoelectric Materials

Thermoelectric Enhancement of Different Kinds of Metal Chalcogenides

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Thermoelectric Properties of Nanostructured Bismuth-Doped Lead Telluride Bi x (PbTe)1−x Prepared by Co-Ball-Milling

Cited by 16 publications

References 25 publications

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSnmSbTe2+m(TAST-m)

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSnmSbTe2+m(TAST-m)

Recent Progress in Multiphase Thermoelectric Materials

Thermoelectric Enhancement of Different Kinds of Metal Chalcogenides

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Product

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Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSn_mSbTe_2+m(TAST-m)

Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSn_mSbTe_2+m(TAST-m)