Effects of high-pressure high-temperature treatment on the thermoelectric properties of PbTe

McGuire, Michael A.; Malik, Abds-Sami; DiSalvo, Francis J.

doi:10.1016/j.jallcom.2007.05.072

Cited by 24 publications

(20 citation statements)

References 15 publications

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“…13,14 The p-type character may indicate some Pb vacancies. 15 The Seebeck coefficient measurements also confirmed the p-type character of the material. Based on the structural studies and the observed nanofeatures, enhanced Seebeck coefficient values were expected.…”

Section: Thermoelectric Propertiesmentioning

confidence: 65%

Thermoelectric Properties of Nanocrystalline PbTe Synthesized by Mechanical Alloying

Papageorgiou

Hatzikraniotis

Lioutas

et al. 2010

Journal of Elec Materi

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In this work, nanocrystalline lead telluride powder was synthesized from high-purity elements by mechanical alloying by means of a planetary ballmilling procedure. The milling medium was tungsten carbide, and the diameter of the balls was varied in order to investigate the effect on the structural features of the material. Phase transformations and crystallite evolution during ball-milling were followed by powder x-ray diffraction (PXRD). The broadened PXRD peaks were analyzed with Voigt functions, revealing small crystalline size and stress introduced during the mechanical alloying process. Transmission electron microscopy (TEM) studies confirmed the material's nanostructure, as well as the effect of ball diameter on the size of the crystals. Thermoelectric properties are discussed in terms of the Seebeck coefficient and the nominal carrier concentration, as determined by Hall-effect measurements. The enhancement of the Seebeck coefficient is reported to be higher compared with other PbTe-based nanocomposites.

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Section: Thermoelectric Propertiesmentioning

confidence: 65%

Thermoelectric Properties of Nanocrystalline PbTe Synthesized by Mechanical Alloying

Papageorgiou

Hatzikraniotis

Lioutas

et al. 2010

Journal of Elec Materi

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“…19 With further high-temperature and highpressure treatment, conventionally synthesized PbTe samples were found to undergo a reversible change of TE properties. 20 Therefore, temperature and pressure seem to play an important role in improving TE properties. However, until recently few calculations have been performed to analyze the TE properties of Te-based materials under pressure.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Properties of PbTe, SnTe, and GeTe at High Pressure: an Ab Initio Study

Wang

Zheng

2011

Journal of Elec Materi

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In this work we present an ab initio study of the transport properties of PbTe, SnTe, and GeTe crystals in the B1 structure under zero and high pressure and analyze the possibility of pressure-induced thermoelectric performance enhancement. GeTe displays higher thermoelectric coefficients in both the p-and n-doping cases at zero pressure, but with applied pressure they drop quickly. n-Type SnTe has a higher Seebeck coefficient and figure of merit (ZT) than p-type SnTe at ambient conditions. With increased pressure its thermoelectric performance is improved initially and degrades later. The highest ZT appears at about 5 GPa. p-Type PbTe possesses attractive thermoelectric properties at zero pressure. With pressure applied, the ZT of this material undergoes a decline-climb-decline variation, and the optimal ZT occurs at 8 GPa to 10 GPa. Thermoelectric properties of n-type PbTe degrade slightly with increasing pressure and improve later; the improvement can be observed for pressures up to 20 GPa. These results suggest possible enhancement of thermoelectric properties for SnTe under intermediate pressure and PbTe under high pressure.

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“…For thermoelectric generation application, many efforts have been made on Si-Ge alloy [2], boron carbides [3], filledskutterudites [4,5], type-I Ge-based clathrates [6,7], Zn 3 Sb 4 [8], Na x Co 2 O 4 [9], and PbTe-based materials [10][11][12]. However, Zintl phase compounds have recently attracted much attention owing to their good thermoelectric properties at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and thermoelectric properties of BaMn2Sb2 single crystals

Wang

Cai

et al. 2009

Journal of Alloys and Compounds

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Effects of high-pressure high-temperature treatment on the thermoelectric properties of PbTe

Cited by 24 publications

References 15 publications

Thermoelectric Properties of Nanocrystalline PbTe Synthesized by Mechanical Alloying

Thermoelectric Properties of Nanocrystalline PbTe Synthesized by Mechanical Alloying

Thermoelectric Properties of PbTe, SnTe, and GeTe at High Pressure: an Ab Initio Study

Synthesis and thermoelectric properties of BaMn2Sb2 single crystals

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