Revisiting the thermoelectric properties of lead telluride

Sharma, Pradeep; Senguttuvan, T. D.; Sharma, Vijay Kumar; Chaudhary, Sujeet

doi:10.1016/j.mtener.2021.100713

Cited by 32 publications

(20 citation statements)

References 126 publications

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“…More recently, machine learning has been popularly used in conjunction with materials science discovery and air materials development [35][36][37][38]. However, the effectiveness of these strategies is limited according to the defect type and the wavelengths of phonons [18,[38][39][40][41][42]. Alternatively, other strategies, such as band structure modulation, entropy engineering, and preferential scattering of minority carriers, can be explored, which aim to improve other components of thermal conductivity as well [43][44][45][46][47][48][49][50][51][52][53].…”

Section: Thermoelectric Devicesmentioning

confidence: 99%

Potential of Recycled Silicon and Silicon-Based Thermoelectrics for Power Generation

et al. 2022

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Thermoelectrics can convert waste heat to electricity and vice versa. The energy conversion efficiency depends on materials figure of merit, zT, and Carnot efficiency. Due to the higher Carnot efficiency at a higher temperature gradient, high-temperature thermoelectrics are attractive for waste heat recycling. Among high-temperature thermoelectrics, silicon-based compounds are attractive due to the confluence of light weight, high abundance, and low cost. Adding to their attractiveness is the generally defect-tolerant nature of thermoelectrics. This makes them a suitable target application for recycled silicon waste from electronic (e-waste) and solar cell waste. In this review, we summarize the usage of high-temperature thermoelectric generators (TEGs) in applications such as commercial aviation and space voyages. Special emphasis is placed on silicon-based compounds, which include some recent works on recycled silicon and their thermoelectric properties. Besides materials design, device designing considerations to further maximize the energy conversion efficiencies are also discussed. The insights derived from this review can be used to guide sustainable recycling of e-waste into thermoelectrics for power harvesting.

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Section: Thermoelectric Devicesmentioning

confidence: 99%

Potential of Recycled Silicon and Silicon-Based Thermoelectrics for Power Generation

et al. 2022

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“…[ 3 ] However, it is still a great challenge to achieve high conversion efficiency, [ 4 ] which can be expressed by the dimensionless thermoelectric figure of merit, zT = S 2 σ T /(κ ele +κ lat ), where S , T , σ, κ ele , and κ lat is the Seebeck coefficient, the absolute temperature, the electrical conductivity, the electronic thermal conductivity, and the lattice thermal conductivity, respectively. [ 5 ]…”

Section: Introductionmentioning

confidence: 99%

Lead Vacancy Promotes Sodium Solubility to Achieve Ultra‐High zT in Only Ternary Pb_1‐_xNa_xTe

Zhong

Zhao

et al. 2023

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Chemical doping of sodium is an indispensable means to optimize thermoelectric properties of PbTe materials, while a bottleneck is that an aliovalent atom doping leads to spontaneous intrinsic defects in the PbTe matrix, resulting in low dopant solubility. Therefore, it is urgent to improve the doping efficiency of Na for maximizing optimization. Here, an amazing new insight that the intentionally introduced Pb vacancies can promote Na solubility in ternary Pb1‐xNaxTe is reported. Experimental analysis and theoretical calculations provide new insights into the inherent mechanism of the enhancement of Na solubility. The Pb vacancies and the resultant more dissolved Na not only synergistically optimize the carrier concentration and further facilitate the band convergence, but also induce a large number of dense dislocations in the grains. Consequently, benefiting from the self‐enhancement of Seebeck coefficient and the minimization of lattice thermal conductivity, an 18% growth is obtained for the figure of merit zT in vacancy‐containing Pb0.95Na0.04Te sample, reaching maximum zTmax ≈ 2.0 at 823 K, which achieves an ultra‐high performance in only Na‐doped ternary Pb1‐xNaxTe materials. The strategy utilized here provides a novel route to optimize PbTe materials and represents an important step forward in manipulating thermoelectrics to improve dopant solubility.

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“…Many distinct classes of TE material systems have been produced over the last few decades, and the reader is directed to a number of good and extensive review publications that address these various types of materials in detail: (Bi,Sb) 2 (Te,Se) 3, [ 23 ] SnSe, [ 24 ] Cu 2 Se, [ 25 ] and SnTe, [ 26 ] PbTe, [ 27 ] and skutterudites. [ 28 ] These carefully selected materials are endowed with the electrical and thermal transport properties that synergically give rise to a figure‐of‐merit close to the universally accepted benchmark of zT = 1 or above.…”

Section: Introductionmentioning

confidence: 99%

“…Rock‐salt structured, lead chalcogenides Pb X (IV–VI compounds with X = Te, Se, S and) are narrow bandgap semiconductors with a history of use as sensors for infrared radiation, photoresistors, and lasers in addition to finding application in thermoelectric devices. [ 47 ] For several decades PbTe (Figure 4g) was the premier TE material for mid‐range (400–800 K) applications [ 48 ] including its successful deployment in deep space missions. [ 49 ] PbSe has a higher melting point (1355 K) compared to PbTe (1253 K) and is therefore suitable for higher temperature applications including solar energy conversion.…”

Section: Introductionmentioning

confidence: 99%

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

2022

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The pillars of Green Chemistry necessitate the development of new chemical methodologies and processes that can benefit chemical synthesis in terms of energy efficiency, conservation of resources, product selectivity, operational simplicity and, crucially, health, safety, and environmental impact. Implementation of green principles whenever possible can spur the growth of benign scientific technologies by considering environmental, economical, and societal sustainability in parallel. These principles seem especially important in the context of the manufacture of materials for sustainable energy and environmental applications. In this review, the production of energy conversion materials is taken as an exemplar, by examining the recent growth in the energy-efficient synthesis of thermoelectric nanomaterials for use in devices for thermal energy harvesting. Specifically, "soft chemistry" techniques such as solution-based, solvothermal, microwave-assisted, and mechanochemical (ball-milling) methods as viable and sustainable alternatives to processes performed at high temperature and/or pressure are focused. How some of these new approaches are also considered to thermoelectric materials fabrication can influence the properties and performance of the nanomaterials so-produced and the prospects of developing such techniques further.

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Revisiting the thermoelectric properties of lead telluride

Cited by 32 publications

References 126 publications

Potential of Recycled Silicon and Silicon-Based Thermoelectrics for Power Generation

Potential of Recycled Silicon and Silicon-Based Thermoelectrics for Power Generation

Lead Vacancy Promotes Sodium Solubility to Achieve Ultra‐High zT in Only Ternary Pb_1‐_xNa_xTe

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

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Revisiting the thermoelectric properties of lead telluride

Cited by 32 publications

References 126 publications

Potential of Recycled Silicon and Silicon-Based Thermoelectrics for Power Generation

Potential of Recycled Silicon and Silicon-Based Thermoelectrics for Power Generation

Lead Vacancy Promotes Sodium Solubility to Achieve Ultra‐High zT in Only Ternary Pb1‐xNaxTe

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

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Lead Vacancy Promotes Sodium Solubility to Achieve Ultra‐High zT in Only Ternary Pb_1‐_xNa_xTe