Effect of Ce-Doping on Thermoelectric Properties in PbTe Alloys Prepared by Spark Plasma Sintering

Li, J.Q.; Li, S.P.; Wang, Q.B.; Wang, L.; Liu, F.S.; Ao, W.Q.

doi:10.1007/s11664-011-1715-9

Cited by 23 publications

(8 citation statements)

References 15 publications

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“…Romcevic et al [17] also reported that when PbTe was doped with less than 0.2 at% Ga it was of the " " type, while a sample with 0.4 at% Ga was of " " type. A similar change from " " to " " type of PbTe samples doped with 0.5 at% or 1.5 at% Ce was also observed [18]. A number of studies have been published for various type of dopants in PbTe analyzing monovalent (Na, K, Rb, Cs, and Cu) then divalent (Zn, Cd, and Hg) and trivalent (Ga, In, and Tl) impurities in PbTe.…”

Section: Advances In Materials Science and Engineeringsupporting

confidence: 68%

Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications

Nikolić

Paraskevopoulos

Zorba

et al. 2015

Advances in Materials Science and Engineering

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PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the “n” type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material.

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Section: Advances In Materials Science and Engineeringsupporting

confidence: 68%

Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications

Nikolić

Paraskevopoulos

Zorba

et al. 2015

Advances in Materials Science and Engineering

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“…The S is dependent on the doping concentration. Further detailed information about the influence of doping K, Na, B, Al, Ga, In, Tl, Ce, and Sb on the thermoelectric properties such as S , ZT, σ, and κ in various chalcogenides (e.g., PbSe, TiNiSn 1– x Sb x , PbTe 1– x Se x ) can be found in the literature. − …”

Section: Approaches To Improve the Performance Of Thermoelectricsmentioning

confidence: 99%

Comprehensive Insights into Synthesis, Structural Features, and Thermoelectric Properties of High-Performance Inorganic Chalcogenide Nanomaterials for Conversion of Waste Heat to Electricity

Manjunatha¹,

Mulla

Nagaraj³

et al. 2022

ACS Appl. Energy Mater.

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Thermoelectrics are energy harvesters that can directly convert waste heat into electrical energy and vice versa. Currently, thermoelectric (TE) devices display lower efficiency as the materials used for construction possess a very low figure of merit (ZT). Therefore, understanding the structural features of materials, finding new materials, and analyzing their chemistry and physics play a vital role in enhancing their energy conversion efficiency. Among the different classes of TE materials, some inorganic chalcogenides are perfect candidates for power generation as they possess excellent TE properties. The objective of this review is to provide insights into structural features and innovative methods to obtain enhanced thermoelectric properties of selected inorganic chalcogenides. The review covers recent advances in preparation methods, structural features, and thermoelectric properties of selected metal selenides (Bi2Se3, Ag2Se, SnSe, etc.) and metal tellurides (Bi2Te3, SnTe, PbTe, etc.). The review also discusses the critical parameters for designing and optimizing the TE materials to obtain the required electrical conductivity (σ), Seebeck coefficient (S), and thermal conductivity (k). In addition, promising mechanistic approaches to be adopted for enhancing the efficiency of TE materials such as doping, alloying, and nanostructuring are discussed in detail. Finally, a summary that describes advancements in the materials design is provided with a prospect for future applications from these materials in the development of energy harvesting technology.

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“…In spite of recent developments in thermoelectric materials research, the potential impact of thermoelectric materials technology for power generations is handicapped by the heavy usage of toxic, expensive, and rare elements such as Te and Se and their low power output [13,14]. For examples, there are only a few major thermoelectric material systems commercially available now in the world to change the temperature from low to high temperature limited generation including SiGe [15], Bi2Te3 [16,17]and PbTe [18]. The applications of these TE materials especially Tebased materials are largely limited by the element resources, toxicity, and material degeneration at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

A review of thermoelectric ZnO nanostructured ceramics for energy recovery

Mohammed¹,

Sudin²,

Noor³

et al. 2018

IJET

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The thermoelectric devices have the ability to convert heat energy into electrical energy without required moving components, having good reliability however their performance depends on material selections. The advances in the development of thermoelectric materials have highlighted to increase the technology's energy efficiency and waste heat recovery potential at elevated temperatures. The fabrication of these thermoelectric materials depends on the type of these materials and the properties using to evaluate these kind of materials such as thermopower (Seebeck effect), electrical and thermal conductivities. Ceramic thermoelectric materials have attracted increased attention as an alternative approach to traditional thermoelectric materials. From these important thermoelectric ceramic materials that can be a candidate for n-type is ZnO doping, which have excellent thermal and chemical stability, as they are promising for high temperature power generator. This review is an effort to study the thermoelectric properties and elements doping related with zinc oxide nanoceramic materials. Effective ZnO dopants and doping strategies to achieve high electrical and thermal conductivities and high carrier concentration are highlighted in this review to enable the advanced zinc oxide applications in thermoelectric power generation.

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Effect of Ce-Doping on Thermoelectric Properties in PbTe Alloys Prepared by Spark Plasma Sintering

Cited by 23 publications

References 15 publications

Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications

Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications

Comprehensive Insights into Synthesis, Structural Features, and Thermoelectric Properties of High-Performance Inorganic Chalcogenide Nanomaterials for Conversion of Waste Heat to Electricity

A review of thermoelectric ZnO nanostructured ceramics for energy recovery

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