The effects of Ag nanoparticles on the thermoelectric properties of Ag2Te-Ag composite fabricated using an energy-saving route

Lin, Fei Hung; Chang, Ko‐Wei; Yang, Zihao; Gharleghi, Ahmad; Liu, Chia‐Jyi

doi:10.1016/j.jallcom.2018.06.359

Cited by 15 publications

(14 citation statements)

References 27 publications

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“…Table 3 shows the comparison between calculated results using SKBcal and transport parameters reported in Ref. 26 . The transport parameters of Lorenz number ( L ), electronic thermal conductivity ( κ e ), and lattice thermal conductivity ( κ l ) in Ref.…”

Section: Data Verificationmentioning

confidence: 99%

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An algorithm of calculating transport parameters of thermoelectric materials using single Kane band model with Riemann integral methods

Lin

Liu

2022

Sci Rep

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We develop an algorithm called SKBcal to conveniently calculate within minutes the thermoelectric transport parameters such as reduced Fermi level (η), electronic thermal conductivity (κe), lattice thermal conductivity (κl), Hall factor (A), effective mass (m*), quality factor (β) and theoretical zT within the framework of single Kane band (SKB) model. The generalized Fermi–Dirac integral for SKB model is integrated by left Riemann integral method. A concept of significant digits of relative error is involved to determine the accuracy of calculation. Furthermore, a combined program of "For" and "While" is coded to set up an iteration for refining the reduced Fermi level. To easily obtain the quality factor, we re-derive the expression into a formula related to carrier mobility. The results calculated by SKBcal are consistent with the data reported in the literatures.

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Section: Data Verificationmentioning

confidence: 99%

“…The transport parameters of Lorenz number ( L ), electronic thermal conductivity ( κ e ), and lattice thermal conductivity ( κ l ) in Ref. 26 are calculated by Mathematica using Riemann integral method. As compared to the results obtained using our SKBcal by Python, the difference between them is almost negligible.…”

Section: Data Verificationmentioning

confidence: 99%

An algorithm of calculating transport parameters of thermoelectric materials using single Kane band model with Riemann integral methods

Lin

Liu

2022

Sci Rep

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“…12,13 In addition, the power factor of a thermoelectric material is inversely proportional to its effective mass. 14 Thus, a high power factor can be expected for Ag 2 Te, owing to its low effective mass. Nanosized Ag 2 Te is also an important precipitate for fabricating hybrid flexible composites, with higher Seebeck coefficients and lower thermal conductivities than both pure Ag 2 Te and organic materials.…”

Section: Introductionmentioning

confidence: 99%

“…26 Lin et al reported a Ag 2 Te−Ag composite, demonstrating the effects of Ag nanoparticles on hightemperature electronic transport. 14 Of note, the stability of the electrical performance at high temperatures can be controlled by designing a special structure between Ag and Ag 2 Te. The fabrication details are also significant for obtaining purephase Ag 2 Te and for enhancing the films' electrical properties owing to the Ag disorder and Te evaporation at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Toward High-Power Output of Generators: High-Power-Factor Ag₂Te–Ag Thermoelectric Thin Films Using a Layer-by-Layer Method

Cao

Zhang

Gao

et al. 2022

ACS Appl. Mater. Interfaces

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The power factor is key to improving the performance of thin-film thermoelectric generators as power sources. The expected large power factor of Ag2Te testifies to its application potential. In this study, Ag2Te–Ag thin films were fabricated using a layer-by-layer method for controlling their composition and improving their thermoelectric properties. In contrast to the traditional low-temperature monoclinic structure, orthorhombic Ag2Te thin films with Ag nanoparticles on top were obtained by the reaction between Ag and Te nanorod thin films. Analysis of the structural and thermoelectric properties showed increased carrier concentration and enhanced electrical properties of the films, while the structural transition between the orthorhombic structure and the face-centered cubic structure improved the films’ electrical stability over a wide range of temperatures. Owing to the special structure, a competitive high power factor of 4.66 mW m–1 K–2 at 668 K was achieved. The proposed approach improves the electrical properties of n-type Ag2Te thin films, owing to the special Ag2Te–Ag structure, and provides guidance for designing high-output-power thin-film thermoelectric generators.

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“…Since using solid-state reactions or melting processes would require high-energy input and consume tremendous amount of energy, we aim to synthesize thermoelectric materials using fabrication routes with less energy consumption either in the synthesis and/or consolidation stage [ 34 , 35 ]. In this paper, we demonstrate a green energy-saving route for fabricating Sb 2 Te 3 -Te nanocomposites, which only requires hot pressing the constituent nanopowders at 400°C under an applied pressure of 70 MPa for 1 h.…”

Section: Introductionmentioning

confidence: 99%

A facile energy-saving route of fabricating thermoelectric Sb ₂ Te ₃ -Te nanocomposites and nanosized Te

et al. 2018

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A facile energy-saving route is developed for fabricating Sb2Te3-Te nanocomposites and nanosized Te powders. The fabrication route not only avoids using organic chemicals, but also keeps the energy consumption to a minimum. The fabrication procedure involves two steps. Energetic precursors of nanosized powders of Sb and Te are produced at room temperature followed by hot pressing at 400°C under 70 MPa for 1 h. The resulting Sb2Te3-Te nanocomposite exhibits enhanced power factor. The dimensionless figure of merit zT value of the Sb2Te3-Te nanocomposite is 0.29 at 475 K.

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The effects of Ag nanoparticles on the thermoelectric properties of Ag2Te-Ag composite fabricated using an energy-saving route

Cited by 15 publications

References 27 publications

An algorithm of calculating transport parameters of thermoelectric materials using single Kane band model with Riemann integral methods

An algorithm of calculating transport parameters of thermoelectric materials using single Kane band model with Riemann integral methods

Toward High-Power Output of Generators: High-Power-Factor Ag₂Te–Ag Thermoelectric Thin Films Using a Layer-by-Layer Method

A facile energy-saving route of fabricating thermoelectric Sb ₂ Te ₃ -Te nanocomposites and nanosized Te

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The effects of Ag nanoparticles on the thermoelectric properties of Ag2Te-Ag composite fabricated using an energy-saving route

Cited by 15 publications

References 27 publications

An algorithm of calculating transport parameters of thermoelectric materials using single Kane band model with Riemann integral methods

An algorithm of calculating transport parameters of thermoelectric materials using single Kane band model with Riemann integral methods

Toward High-Power Output of Generators: High-Power-Factor Ag2Te–Ag Thermoelectric Thin Films Using a Layer-by-Layer Method

A facile energy-saving route of fabricating thermoelectric Sb 2 Te 3 -Te nanocomposites and nanosized Te

Contact Info

Product

Resources

About

Toward High-Power Output of Generators: High-Power-Factor Ag₂Te–Ag Thermoelectric Thin Films Using a Layer-by-Layer Method

A facile energy-saving route of fabricating thermoelectric Sb ₂ Te ₃ -Te nanocomposites and nanosized Te