The remarkable enhancement in the solubility of Bi in the ZnO phase, Zn1-xBixO (0 ≤ x ≤ 0.1), by high energy ball milling technique

Selvamani, S.T.; Balamurugan, S.; Ashika, S. A.; Fathima, T. K. Sana

doi:10.1007/s42247-021-00286-3

Cited by 13 publications

(3 citation statements)

References 53 publications

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“…This decrease in transmittance can be due to the increase in film thickness or the formation of localized defect levels of boron impurities in the band gap of the material [40]. These defects are actually related to the solubility of B in the Zn-site in ZnO structure [41]. The band gap energies of all thin films were obtained from the Tauc equation, which is given in equation (7).…”

Section: Resultsmentioning

confidence: 99%

Enhancement of structural, optical, electrical, optoelectronic and thermoelectric properties of ZnO thin film via Ni doping and Ni-B co-doping

Üzar,

Abdulaziz,

Erbas

et al. 2024

Phys. Scr.

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In this study, the effects of nickel (Ni) and boron (B) elements on the structural, optical, electrical, optoelectronic, and thermoelectric properties of zinc oxide (ZnO) material were investigated. Therefore, undoped ZnO, 3% Ni-doped ZnO (Zn0.97Ni0.03O), and 3% Ni-1% B co-doped ZnO (Zn0.96Ni0.03B0.01O) solutions were prepared by the sol gel method. The produced solutions were coated on glass and p-type Si substrates via dip coating and spraying methods in the form of thin films. We produce pure and n-type semiconductors in the form of nanodots which have wurtzite ZnO polycrystalline structure for all samples. Ni and B co-doped sample is morphologically, electrically and optically enhanced the ZnO material with 3.08 eV band gap, homogenous surface and the highest electrical conductivity. In addition, the best material among the three samples that can be used as a visible light-sensitive sensor is Zn0.96Ni0.03B0.01O under feedback voltage. Technologically, this material can be turned into a photodiode device in the form of Au/Zn0.96Ni0.03B0.01O/p-Si. While the obtained ideality factor of ZnO from the forward bias region decreases from 5.7 to 3.4, its barrier height increases from 0.636 eV to 0.667 eV and serial resistance of contact decreases from 121.6 × 103 Ω to 5.6 × 103 Ω with Ni and B co-doping. Ni doping thin film improves the photovoltaic, and thermoelectric properties of ZnO. Ni-doped ZnO sample can be studied in form of the thin films as a thermoelectric material due to its ZT value is nearly 1.73 × 10–4 at 650 K. Its thermoelectric performance is 13 times better than the that of pure ZnO for the same temperature values. The efficiency of Ni-doped ZnO sample as solar cell increases 10 times compared to pure ZnO. In addition to the production of materials with improved energy efficiency, economical products suitable for use in large areas have been obtained in this study.

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Section: Resultsmentioning

confidence: 99%

Enhancement of structural, optical, electrical, optoelectronic and thermoelectric properties of ZnO thin film via Ni doping and Ni-B co-doping

Üzar,

Abdulaziz,

Erbas

et al. 2024

Phys. Scr.

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“…As the physico-chemical properties and the morphology of the different nanostructured materials are very sensitive to various parameters, we have mechanically stirred 1 g of commercial Y 2 O 3 (Alfa Aesar) powder with different concentrations of PEG (200) with DW as solvent (Table II) and their XRD patterns are shown in 41 In addition to the "a" and 'D 'features, the micro-structural parameters [57][58][59][60] are extracted from the XRD JANA structural refinement results. The calculated micro-structural parameters, for instance, dislocation density, δ = 1/D 2 , lattice-strain ε ls = β/4 × tanθ, micro-strain, ε = β ×cosθ/4, and stacking fault probability, α = [2π 2 /45√(3tanθ)]β reveal considerable variation in these obtained values for the different processed samples (Table IV).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Structural and Optical Properties of Nanocrystalline Cubic Y₂O₃ Phase Materials via Combustion Method Using Different Fuels

Marjuka

Balamurugan

Ashika

et al. 2022

ECS J. Solid State Sci. Technol.

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We have carried out combustion synthesis of nanocrystalline Y2O3 materials using hexamine, polyethylene glycol(200) (PEG(200)), and ethylene glycol (EG) as fuels. In addition, the impact of mechanical stirring of commercial Y2O3 powder with various dilutions of PEG(200) with distilled water as a solvent was also examined. The as-prepared combustion product of the hexamine is significantly different from other fuels (PEG(200) and EG). The annealed combustion products crystallize in the pure cubic Y2O3 phase. The combustion product of PEG(200) reveals a maximum weight loss of ~46% at 800°C in the TG curve. The UV-Vis-NIR features of different samples show quite interesting results. The Eg values obtained from the Tauc plots are found in the range of 5.48 to 5.71 eV for the different samples. The observed strong FTIR band at 560 ~ 415 cm−1is owing to the vibrational Y-O bond in the present series samples. The Raman spectra show the highest intensity peak at wavenumber 374 cm−1is owing to the Fg vibrational mode of the Y2O3phase. Agglomerated nature of nanoparticles is seen in the Y2O3 phase samples obtained from EG and hexamine as fuels.

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“…Such a decrease in NIR reflectance of the ball-milled materials is significantly noted in different types of oxides. 47,48,[50][51][52][53][54][55][56] While the commercial Cr 2 O 3 powder is green, 40 the other produced samples are different in color appearance (figure not shown here). The difference in color appearance shows a significant variation in NIR reflectance values (Fig.…”

Section: Experimental and Characterization Techniquesmentioning

confidence: 96%

Detailed Studies on the Synthesis Methods and Characterizations of Nanocrystalline Cr₂O₃ Phase Materials for NIR Pigmentation Applications

Ashika¹,

Balamurugan²,

Fathima³

et al. 2023

ECS J. Solid State Sci. Technol.

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To make comparative studies on the different synthesis methods of Cr2O3 nanomaterials, efforts were made to syntheses of Cr2O3 nanomaterials by precipitation method, hydrothermal method, ball milling method, and thermal treatment method. Different characterization techniques were used to examine the structural, microstructural, thermal, and optical properties of Cr2O3 nanomaterials obtained by distinct approaches. When Cr(NO3)3.9H2O heat treated at 200°C shows amorphous in nature, whereas the pure rhombohedral Cr2O3 phase forms at 350°C. Upon heat treating (650°C) the precipitated and hydrothermally obtained products, the amorphous phase changed to the nanocrystalline Cr2O3 phase. The UV–Vis measurements exhibit slight variation in the peak intensity of absorbance and calculated Eg values ranging from 1.82 to 2.3 eV. Significant changes in the NIR reflectance (<5 to ~50%) values are seen in the 750 - 2500 nm regions for the Cr2O3 phase nanomaterials. The precursor salt calcined at 900°C exhibits good green color Cr2O3 phase materials with higher NIR reflectance of ~50% at ~2370 nm than the other samples, which is promising for potential NIR reflecting green pigment application. While the calcination of the precursor at 650°C shows the spherical-shaped nanoparticles, the precipitated product heat treated at 650°C reveals spherical-shaped nanoparticles in the agglomerated form.

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The remarkable enhancement in the solubility of Bi in the ZnO phase, Zn1-xBixO (0 ≤ x ≤ 0.1), by high energy ball milling technique

Cited by 13 publications

References 53 publications

Enhancement of structural, optical, electrical, optoelectronic and thermoelectric properties of ZnO thin film via Ni doping and Ni-B co-doping

Enhancement of structural, optical, electrical, optoelectronic and thermoelectric properties of ZnO thin film via Ni doping and Ni-B co-doping

Evaluation of Structural and Optical Properties of Nanocrystalline Cubic Y₂O₃ Phase Materials via Combustion Method Using Different Fuels

Detailed Studies on the Synthesis Methods and Characterizations of Nanocrystalline Cr₂O₃ Phase Materials for NIR Pigmentation Applications

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The remarkable enhancement in the solubility of Bi in the ZnO phase, Zn1-xBixO (0 ≤ x ≤ 0.1), by high energy ball milling technique

Cited by 13 publications

References 53 publications

Enhancement of structural, optical, electrical, optoelectronic and thermoelectric properties of ZnO thin film via Ni doping and Ni-B co-doping

Enhancement of structural, optical, electrical, optoelectronic and thermoelectric properties of ZnO thin film via Ni doping and Ni-B co-doping

Evaluation of Structural and Optical Properties of Nanocrystalline Cubic Y2O3 Phase Materials via Combustion Method Using Different Fuels

Detailed Studies on the Synthesis Methods and Characterizations of Nanocrystalline Cr2O3 Phase Materials for NIR Pigmentation Applications

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Product

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About

Evaluation of Structural and Optical Properties of Nanocrystalline Cubic Y₂O₃ Phase Materials via Combustion Method Using Different Fuels

Detailed Studies on the Synthesis Methods and Characterizations of Nanocrystalline Cr₂O₃ Phase Materials for NIR Pigmentation Applications