Effect of Aluminum (Al) Concentration on the Thermoelectric Performance of Zinc Aluminum Selenium (ZnAlSe) Alloy

Ali, Hafiz T.; Jacob, Jolly; Isram, Muhammad; Mahmood, K.; Yusuf, Mohammad; Mehboob, Khurram; Ikram, Salma; Amin, Nasir; Javaid, Kashif

doi:10.1007/s10948-021-05961-4

Cited by 2 publications

(2 citation statements)

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“…The sample with the highest doping concen-tration (x = 0.4) exhibited the largest power factor, reaching about 9 × 10 −3 Wm-1K-2 at 150 • C, approximately one order of magnitude higher than the power factor of the undoped sample. Similar results were previously obtained by some of the authors of this study on aluminum-doped ZnSe nanoparticles synthesized using the same approach [45]. Although a comprehensive understanding of the mechanisms behind the enhanced thermoelectric performance would require dedicated computational studies, it is worth noting that similar results were achieved in similar classes of materials, such as doped nanocrystalline SnSebased compounds.…”

Section: Electrical and Thermoelectric Measurementssupporting

confidence: 87%

“…Enhancement of the Seebeck coefficient values is observed for increasing levels of doping. The simultaneous increase in the Seebeck coefficient and electrical conductivity with increasing doping is not common, despite being reported multiple times in the literature [42][43][44][45]. The precise understanding of the mechanisms involved requires dedicated theoretical calculations.…”

Section: Electrical and Thermoelectric Measurementsmentioning

confidence: 99%

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Unveiling the Thermoelectric Performances of Zn1−xFexSe Nanoparticles Prepared by the Hydrothermal Method

et al. 2023

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Fe2+-doped ZnSe nanoparticles, with varying concentrations of Fe2+ dopants, were prepared by the hydrothermal method and investigated using a multi-technique approach exploiting scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy, as well as measurement of the electrical transport properties and Seebeck coefficient (S). The doped nanoparticles appeared as variable-sized agglomerates on nanocrystallites upon SEM investigation for any doping level. Combined XRD and Raman analyses revealed the occurrence of a cubic structure in the investigated samples. Electric and thermoelectric (TE) transport investigations showed an increase in TE performance with an increase in Fe atom concentrations, which resulted in an enhancement of the power factors from 13 µWm−1K−2 to 120 µWm−1K−2 at room temperature. The results were also dependent on the operating temperature. The maximum power factor of 9 × 10−3 Wm−1K−2 was achieved at 150 °C for the highest explored doping value. The possible applications of these findings were discussed.

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Section: Electrical and Thermoelectric Measurementssupporting

confidence: 87%