Structure, electric and thermoelectric properties of binary ZnO-based ceramics doped with Fe and Co

Pashkevich, A. V.; Fedotov, А.К.; Подденежный, Е. Н.; Bliznyuk, L. A.; Fedotova, J.; Basov, N. A.; Харченко, А. А.; Żukowski, P.; Kołtunowicz, Tomasz N.; Королик, О. В.; Федотова, В. В.

doi:10.1016/j.jallcom.2021.162621

Cited by 32 publications

(13 citation statements)

References 72 publications

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“…Among the doped samples, Zn 0.98 Ni 0.01 In 0.01 O sample has the highest power factor which is more than 100 times greater than the power factor of pure ZnO. This power factor is greater than the values obtained for Ni, In singly doped ZnO samples and Mn and Al, Al and B, Fe and Co, In and Ga, Ce and Dy dual doped ZnO samples 19,20,28,30‐32,45 . So, nickel and indium dual doped samples can be considered as a good candidate for thermoelectric application.…”

Section: Resultsmentioning

confidence: 86%

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Enhancement of thermoelectric power factor of zinc oxide by nickel and indium dual doping

Soumya

Pradyumnan

2022

Intl J of Energy Research

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Effect of structural and morphological deformation on the enhancement of thermoelectric properties of zinc oxide due to the dual substitution of indium and nickel was investigated. The doped materials resemble the hexagonal wurtzite structure of the host material, with increased crystallite size and strain, indicating the inclusion of the cations with larger radius. Reduction in the optical band gap energy from 3.1 eV to 2.20 eV is observed with a red shift in the absorption edge. The donor cations doped samples have high charge carrier density, resulting an increase in the transport properties. Highest electrical conductivity and seebeck coefficient were obtained for the doped samples leading to a hike in the power factor of 1427 μW/mK 2 . The thermal conductivity decreased with doping concentration, and highest figure of merit of 0.11 was obtained.

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Section: Resultsmentioning

confidence: 86%

“…This power factor is greater than the values obtained for Ni, In singly doped ZnO samples and Mn and Al, Al and B, Fe and Co, In and Ga, Ce and Dy dual doped ZnO samples. 19,20,28,[30][31][32]45 So, nickel and indium dual doped samples can be considered as a good candidate for thermoelectric application.…”

Section: Power Factormentioning

confidence: 99%

Enhancement of thermoelectric power factor of zinc oxide by nickel and indium dual doping

Soumya

Pradyumnan

2022

Intl J of Energy Research

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“…Wang et al have reported the thickness electromechanical coupling factor k t ~ 19.4% and planar electromechanical coupling factor k p ~ 3.5% at room temperature for the Co-modified SBT ceramics [ 20 ]. On the other hand, Zinc Oxide (ZnO) possesses unique characteristics, with good thermoelectric properties, high electron mobility, good corrosion resistance, thermal stability, and low toxicity [ 21 , 22 ]. Many functional materials with ZnO (dopant/additive) in the form of ceramics have become a strong topic of research in the field of sensors, actuators, optoelectronics, and the various types of energy converters into electrical energy [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Boosting of Magnetic, Ferroelectric, Energy Storage Efficiency, and Piezoelectric Properties of Zn Intercalated SrBi4Ti4O15-Based Ceramics

et al. 2022

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An appropriate amount of Zn-ions are incorporated into the high Curie temperature bismuth layer-structure ferroelectric material to fabricate Sr0.2Na0.4Pr0.4Bi4Ti4O15:xwt%ZnO; (SNPBT:xZn), with x = 0, 0.10, 0.15, and 0.20 ceramic series to investigate the magnetic, ferroelectric, and energy storage efficiency and piezoelectric properties. Pure SNPBT and SNPBT:xZn ceramics have maintained their structure even after the intercalation of Zn-ions at the lattice sites of SNPBT. The addition of ZnO in SNPBT has improved the multifunctional properties of the material at x = 0.15. At room temperature, SNPBT:0.15Zn has shown a high relative density of 96%, exhibited weak ferromagnetic behavior along with a low saturation magnetization (Ms) of 0.028 emu/g with a low coercive field of 306 Oe, a high remnant polarization (Pr) of 9.04 µC/cm2, a recoverable energy density (Wrec) of ~0.5 J/cm3, an energy conversion efficiency (η) of ~41%, a high piezoelectric co-efficient (d33) of 21 pC/N, and an impedance of 1.98 × 107 Ω, which are much improved as compared to pure SBT or pure SNPBT ceramics. Dielectric Constant (ɛr) versus temperature plots present the sharp peak for SNPBT:0.15Zn ceramic at a Curie temperature (TC) ~ 605 °C, confirming the strong ferroelectric nature of the ceramic. Moreover, SNPBT:0.15Zn ceramic has shown strong, piezoelectric, thermally stable behavior, which remains at 76% (16 pC/N) of its initial value even after annealing at 500 °C. The achieved results clearly indicate that SNPBT:0.15Zn ceramic is a promising candidate for future wide-temperature pulse power applications and high-temperature piezoelectric devices.

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“…In past decades, the synthesis and properties of metal oxide nanostructures with controllable sizes and shapes have attracted increasing attention due to their potential applications in electronchemistry, water purification, and photocatalysis under visible light [8][9][10][11]. As a promising material, copper oxide (CuO), an important p-type semiconductor with a narrow band-gap of 1.4 eV, has many excellent characteristics, such as that it is an abundant resource, non-toxic, and can be easily prepared in diverse shapes of nano-sized dimensions.…”

Section: Introductionmentioning

confidence: 99%

Controlled morphological synthesis of temperature-dependent CuO nanostructures and their effect on photocatalytic performance

Zhou

Pu²,

Jiao³

et al. 2022

Mater. Res. Express

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With the development of the times, more and more pollutants such as dyes produced by industry have inevitably caused harm to human health. Dyes are complex and stable in structure, and traditional methods of physically and chemically processing dyes have been proven to be inefficient. The heterogeneous photocatalytic technology has been widely regarded as one of the most promising processes for the treatment of harmful organic wastewater. In this paper, copper oxide (CuO) nanomaterials were synthesized via a hydrothermal method and it was found that the stirring temperature can regulate its morphology and structure, which in turn affects the optical, electrical and catalytic properties of the final product. By controlling the stirring temperature, CuO nanomaterials in the range of ~30-500 nm were obtained. The as-prepared composites were characterized using X-ray diffraction, transmission electron microscope, scanning electron microscopy, and ultraviolet-visible spectroscopy techniques, among others. After a possible mechanism was proposed according to the above data, the photocatalytic performance of the CuO nanomaterials was evaluated by measuring the decomposition rate of rhodamine B (RhB) solutions. The results indicated that the CuO obtained at 100 oC exhibited excellent photocatalytic activity in comparison to other samples, with around 93% degradation of the RhB solution after 80 min. Finally, the recycling performance of the CuO nanomaterials was also tested and found to be extremely stable, with a high degradation level of 78% maintained after five cycles. In conclusion, the CuO nanomaterials are efficient catalysts for the complete degradation of RhB.

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Structure, electric and thermoelectric properties of binary ZnO-based ceramics doped with Fe and Co

Cited by 32 publications

References 72 publications

Enhancement of thermoelectric power factor of zinc oxide by nickel and indium dual doping

Enhancement of thermoelectric power factor of zinc oxide by nickel and indium dual doping

Boosting of Magnetic, Ferroelectric, Energy Storage Efficiency, and Piezoelectric Properties of Zn Intercalated SrBi4Ti4O15-Based Ceramics

Controlled morphological synthesis of temperature-dependent CuO nanostructures and their effect on photocatalytic performance

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