Growth and characterization of Ag–Al2O3 composites thin films for thermoelectric power generation applications

Ullah, Imran; Tamseel, M.; Amami, Mongi; Javed, Muhammad Rizwan; Javaid, Kashif; Mahmood, K.; Ikram, Salma; Ali, Adnan; Amin, Nasir; Hussain, Muhammad; Ali, M.; Arshad, M. Imran

doi:10.1016/j.ceramint.2021.10.145

Cited by 6 publications

(1 citation statement)

References 38 publications

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“…That Zn nanoinclusions precipitated out from the matrix Zn 4 Sb 3 during processing due to the narrow phase transition for the β phase are proved with image analysis and lead to a reduction in κ . Ullah et al added the Ag inclusions into the Al 2 O 3 oxide film, intending to improve the σ of the oxide phase. As shown in Figure c and d, adding Ru nanoinclusions in the Cu 1.8 S matrix enhances the temperature-dependent electrical and mechanical stability .…”

Section: Classification Of Nanoinclusionsmentioning

confidence: 99%

Insights into the Classification of Nanoinclusions of Composites for Thermoelectric Applications

Theja

Karthikeyan

Assi

et al. 2022

ACS Appl. Electron. Mater.

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Thermoelectric composites are known for their enhanced power conversion performance via interfacial engineering and intensified mechanical, structural, and thermal properties. However, the selection of these nanoinclusions, for example, their type, size effect, volume fraction, distribution uniformity, coherency with host, carrier dynamics, and physical stability, plays a crucial role in modifying the host material thermoelectric properties. In this Review, we classify the nanoinclusions into five types: carbon allotropes, secondary thermoelectric phases, metallic materials, insulating oxides, and others. On the basis of the classification, we discuss the mechanisms involved in improving the ZT of nanocomposites involving reduction of thermal conductivity (κ) by phonon scattering, improving the Seebeck coefficient (α) via energy filtering effect and the electrical conductivity (σ) by carrier injection or carrier channeling. Comprehensibly, we validate that adding nanoinclusions with high electrical and low thermal conductivity as compared to the matrix material is the best way to optimize the interlocked thermoelectric parameters. Thus, collective doping and nanoinclusions in thermoelectric materials is the best possible solution to achieve a higher power conversion efficiency equivalent to other renewable energy technologies.

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Section: Classification Of Nanoinclusionsmentioning

confidence: 99%

Insights into the Classification of Nanoinclusions of Composites for Thermoelectric Applications

Theja

Karthikeyan

Assi

et al. 2022

ACS Appl. Electron. Mater.

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Experimental and Theoretical Studies on Ag Nanoparticles with Enhanced Plasmonic Response, Formed Within Al2O3 Thin Films Deposited by Magnetron Sputtering

Sekrafi,

Costa,

Proença

et al. 2024

Plasmonics

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Reactive magnetron sputtering was employed to prepare nanocomposite thin films of Ag/Al2O3, on a glass substrate. The films are characterized by the formation of Ag nanoparticles embedded in the Al2O3 matrix, after thermal treatment at 600 °C, which are responsible for the appearance of an outstanding pronounced and narrow localized surface plasmon resonance (LSPR) band. Electron microscopy analysis also revealed the presence of larger Ag fractal aggregates at the film’s surface, responsible for a broad band absorption. Noteworthily, the LSPR band maximum remains at the same position (about 412 nm) for Ag concentrations ranging from 23 to 34 at.%, despite some discernible alterations in both LSPR band intensity and width. An optimized thin film is characterized by full transparency in non-resonant wavelengths due to suppression of Ag aggregates at the film’s surface, while maintaining the LSPR behavior. To better explain the plasmonic behavior of the Ag/Al2O3 films, discrete dipole approximation was used to determine the extinction, scattering, and absorption efficiencies of Ag spheres surrounded by an Al2O3 cap layer. This allowed to ascertain some nanostructural features of the films, pointing to the formation of Ag nanoparticles with average sizes in the order of 40 nm.

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Intelligent prediction method for power generation based on deep learning and cloud computing in big data networks

Zhou

2023

International Journal of Intelligent Networks

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Growth and characterization of Ag–Al2O3 composites thin films for thermoelectric power generation applications

Cited by 6 publications

References 38 publications

Insights into the Classification of Nanoinclusions of Composites for Thermoelectric Applications

Insights into the Classification of Nanoinclusions of Composites for Thermoelectric Applications

Experimental and Theoretical Studies on Ag Nanoparticles with Enhanced Plasmonic Response, Formed Within Al2O3 Thin Films Deposited by Magnetron Sputtering

Intelligent prediction method for power generation based on deep learning and cloud computing in big data networks

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