Low-Temperature Synthesis and Thermoelectric Properties of n-Type PbTe

Papageorgiou, Ch.; Giapintzakis, J.; Kyratsi, Theodora

doi:10.1007/s11664-012-2469-8

Cited by 14 publications

(11 citation statements)

References 19 publications

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“…The dashed line in (b) is the expected n for e À per one iodine atom. Two previously reported studies (hot pressed 19 and low temperature synthesized 40 of MgTe further lowers the solubility of I in the PbTe lattice. For instance, n of PbTe 0.996 I 0.004 is 4.05 Â 10 19 cm À3 , whereas with 1% MgTe content in PbTe 0.996 I 0.004 , n is lowered to 2.23 Â 10 19 cm À3 (Table S1 in the ESI †).…”

Section: Resultsmentioning

confidence: 80%

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Enhanced average thermoelectric figure of merit of n-type PbTe_1−xI_x–MgTe

et al. 2015

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Section: Resultsmentioning

confidence: 80%

“…6c and compared with a few earlier reports. 19,40 The dashed line represents the expected trend for acoustic phonon scattering. 19 In our case, a large deviation from the expected values is seen for lower doping levels, especially for x = 0.0028.…”

Section: Resultsmentioning

confidence: 97%

Enhanced average thermoelectric figure of merit of n-type PbTe_1−xI_x–MgTe

et al. 2015

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“…Although it was difficult to quantitatively determine the precise compositions of the aforementioned nanofeatures, EDS indicated an increase in the Na signal from the precipitates compared with the matrix regions, as revealed in the EDS spectrum inset of Figure . Consequently, TEM observations confirm that Na‐rich nanoinclusions mainly situate both inside the matrix grains, as well as on the grain boundaries . This result indicates that Na‐rich nanoprecipitates were formed during sintering at 600 °C.…”

Section: Resultsmentioning

confidence: 65%

“…The crystal structures of Pb 1− x Na x Te samples were analysed using XRD and subsequent Rietveld analysis. All the observed peaks for each sample (see Figure ) could be indexed to a cubic phase with space group Fm‐3m, which indicates that the low temperature synthesis (LTS) method provides a single phase PbTe with no Na 2 Te, Pb, or Te residuals, see Figure .…”

Section: Resultsmentioning

confidence: 94%

Low Temperature Synthesis as a Route for Highly Thermoelectric Efficient Na‐Doped PbTe

Papageorgiou

Delimitis

Symeou

et al. 2018

Physica Status Solidi (a)

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In this work, Na-doped PbTe is synthesized through a low temperature synthesis technique. This method provides highly efficient p-type PbTe using a synthesis temperature much lower than the PbTe melting point and as low as 430 C followed by sintering at 600 C. A maximum ZT of 1.36 at 720 K is achieved for the Pb 0.98 Na 0.02 Te sample arising from a high power factor and a very low lattice thermal conductivity. The low thermal conductivity is attributed to the in situ nanostructuring achieved by the low temperature synthesis method, followed by cold pressing and sintering.

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“…Ch. Papageorgiou and coworkers reported the decreasing crystallite size in iodine doped PbTe with increasing PbI 2 content . On the other hand, lanthanum is a soft and ductile chemical element which may prevent obtaining small crystallites.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Ball Milling Effect on Thermal Conductivity of PbTe Based Alloys

Królicka

Mirowska

Materna

et al. 2017

Crystal Research and Technology

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Lead chalcogenide (PbTe) nanopowders doped with chromium, iodine, silver and lanthanum were obtained by ball-milling ingots grown by the vertical Bridgman technique. These nanopowders were subsequently subjected to consolidating by cold pressing technique and further sintering in a furnace (CPS). In the present work, the effect of ball milling time and second phases on the microstructure and the eventual crystallite size is analyzed. The thermal conductivity versus temperature measurements were conducted and showed decrease in κ values with milling time. The lowest obtained thermal conductivity values were as follows: κ = 0.4W/mK and κ = 0.26W/mK for PbTe:Cr, I and PbTe:Ag,La materials, respectively. Additionally, scanning electron microscopy (SEM) was performed for the samples after different milling time. In order to determine the size of the obtained powder particles the particle size analysis measurements were performed using optical microscopy (Clemex vision software) and X-ray powder diffraction analysis (XRD).

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Low-Temperature Synthesis and Thermoelectric Properties of n-Type PbTe

Cited by 14 publications

References 19 publications

Enhanced average thermoelectric figure of merit of n-type PbTe_1−xI_x–MgTe

Enhanced average thermoelectric figure of merit of n-type PbTe_1−xI_x–MgTe

Low Temperature Synthesis as a Route for Highly Thermoelectric Efficient Na‐Doped PbTe

Synthesis and Ball Milling Effect on Thermal Conductivity of PbTe Based Alloys

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Low-Temperature Synthesis and Thermoelectric Properties of n-Type PbTe

Cited by 14 publications

References 19 publications

Enhanced average thermoelectric figure of merit of n-type PbTe1−xIx–MgTe

Enhanced average thermoelectric figure of merit of n-type PbTe1−xIx–MgTe

Low Temperature Synthesis as a Route for Highly Thermoelectric Efficient Na‐Doped PbTe

Synthesis and Ball Milling Effect on Thermal Conductivity of PbTe Based Alloys

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Enhanced average thermoelectric figure of merit of n-type PbTe_1−xI_x–MgTe

Enhanced average thermoelectric figure of merit of n-type PbTe_1−xI_x–MgTe