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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Azevedo, Nuno Monteiro |
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| Rignanese, Gian-Marco |
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Nayak, Sanjib
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Publications (7/7 displayed)
- 2023Facile composite engineering to boost thermoelectric power conversion in ZnSb devicecitations
- 2023Facile composite engineering to boost thermoelectric power conversion in ZnSb devicecitations
- 2023Role of polarization switching and domain patterns in the enhanced piezoelectric characteristics of a Pb-free ferroelectric system
- 2022NiO–Ti nanocomposites for contact electrification and energy harvesting: experimental and DFT+<i>U</i> studiescitations
- 2022Amorphous carbon nano-inclusions for strategical enhancement of thermoelectric performance in Earth-abundant Cu3SbS4citations
- 2022A study on the electronic properties of A site and B site doped SrTiO<sub>3</sub> for thermoelectric applications using first-principles calculationscitations
- 2021Dynamical origins of weakly coupled relaxor behavior in Sn-doped (Ba, Ca)TiO3-BiScO3citations
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article
Facile composite engineering to boost thermoelectric power conversion in ZnSb device
Abstract
Zinc antimonide (ZnSb) is one of the alternatives for commercial thermoelectric materials due to its non-toxic, low-cost, and earth-abundant nature. However, its simple crystal structure causes strong phonon vibrations, which enhance lattice thermal conductivity. In this work, we systematically studied the effect of γ-Al<sub>2</sub>O<sub>3</sub> nano-inclusions on ZnSb. Our results show that composite engineering imparts lattice phonon scattering for reduced thermal conductivity and low-energy carrier filtering for enhanced Seebeck coefficient. The obtained figure of merit in the ZnSb+5% γ-Al<sub>2</sub>O<sub>3</sub> sample at 673 K is nearly two-fold higher than the pristine sample. Our fabricated 2-leg ZnSb+5% γ-Al<sub>2</sub>O<sub>3</sub> device displayed a power generation of 0.11 μW at ΔT of 200 °C. Furthermore, adding γ-Al<sub>2</sub>O<sub>3</sub> nano-inclusions improve the mechanical and thermal stabilities due to grain boundary hardening and dispersion strengthening. Overall, the addition of γ-Al<sub>2</sub>O<sub>3</sub> nano-inclusions to ZnSb enhancing the Seebeck coefficient, reducing thethermal conductivity, and improving mechanical and thermal stability significantly. © 2023 Elsevier Ltd.