Morphology of ZnO Films Fabricated by Electrochemical Oxidation of Metallic Zn

Kuz’mina, A.S.; Kuz’mina, Marina Yu.; Kuz'min, M.P.

doi:10.4028/www.scientific.net/msf.989.210

Cited by 5 publications

(1 citation statement)

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“…The effect of different parameters such as annealing temperature, substrate nature, Mn doping concentration on the physical properties of Mn-doped ZnO thin films using different physical and chemical methods of elaboration, such as pulsed laser deposition, [11][12][13] spray pyrolysis, [14,15] magnetron sputtering, [16,17] and sol-gel were widely studied. [18,19] However, very little research investigated the thickness effect of Mn-doped ZnO thin films that used rf magnetron sputtering method for preparation.…”

Section: Introductionmentioning

confidence: 99%

Thickness Effect on the Properties of 4% Mn‐Doped ZnO Thin Films Grown by Sol‐Gel Spin Coating Deposition

Boukhari

Deghfel

Mahroug

et al. 2021

Macromolecular Symposia

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In this study, the thickness effect of 4% Mn‐doped ZnO thin films on structural, optical, and morphological properties is investigated. The films are deposited on a glass substrate using the sol‐gel spin coating method. Phase analysis indicates that all films have a hexagonal wurtzite structure with a high preferential c‐axis orientation. All structural parameters are significantly influenced by the thickness variations. The optical analysis reveals that transmittance and band gap energy decrease with thickness. A red shift of the absorption edge is noticed. The surface morphology shows a good uniformity for all ZnO films. The surface roughness of the samples increases with film thicknesses. The photoluminescence (PL) spectra show a UV peak at 388 nm with two blue peaks at 438 and 475 nm and a weak green emission peak at 525 nm. A lower PL intensity is noticed by increasing the thickness. The obtained results exhibit similarities in behavior as other methods.

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Section: Introductionmentioning

confidence: 99%

Thickness Effect on the Properties of 4% Mn‐Doped ZnO Thin Films Grown by Sol‐Gel Spin Coating Deposition

Boukhari

Deghfel

Mahroug

et al. 2021

Macromolecular Symposia

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Formation of carbon nanotubes and microsilica when obtaining crystalline silicon in three-phase electric ore smelting furnaces

Kuz'min¹,

Кондратьев²,

Kuz’mina³

et al. 2021

Izv. VUZ. Poroshk. Met.

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The volume of silicon waste generated annually in the Irkutsk Region is 20 thousand tons per year, and the volume of waste accumulated in three sludge fields of JSC «Silicon» exceeds 3 million m3. The main type of crystalline silicon production waste is dust from gas cleaning systems of electric ore smelting furnaces. In this regard, this paper studies its chemical composition and the possibilities of using valuable components (amorphous silica, carbon nanotubes (CNT)) included in its composition. The study demonstrates that it is possible to separate this product by flotation into 3 components — sand fraction, flotation tailings enriched in SiO2, and froth enriched in carbon in the form of CNT. The structure of carbon nanotubes was studied and their physical and mechanical properties were determined: elastic modulus (2000 GPa), tensile strength (75 GPa), and thermal conductivity (4000 W/(m·K)). The amount of heat required to obtain 1 kg of CNT in electric ore smelting furnaces was calculated. Based on the material balance of commercial silicon electric smelting, it was found that 153 kg of CNT and 336 kg of flotation tailings are formed per ton of crystalline silicon during the endothermic process. Flotation tailings consist of 75 % amorphous microsilica particles. According to heat effect and Gibbs energy calculations made for amorphous microsilica formation reactions, it was found that all processes are exothermic, and the process of solid silicon carbide particles (2SiC + 3O2 → 2SiO2 + 2CO) oxidation with air oxygen has the highest thermodynamic probability. The economic efficiency of using amorphous silica to produce casting silumins was calculated, and its results clearly demonstrate a quick payback period (6 months), as well as a high level of its profitability (USD 819672).

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Effect of Prolonged Annealing on the Morphology and Optical Properties of ZnO Films Produced via Magnetron Sputtering

Tomaev,

Polishchuk,

Leonov

et al. 2023

Bull. Russ. Acad. Sci. Phys.

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Morphology of ZnO Films Fabricated by Electrochemical Oxidation of Metallic Zn

Cited by 5 publications

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Thickness Effect on the Properties of 4% Mn‐Doped ZnO Thin Films Grown by Sol‐Gel Spin Coating Deposition

Thickness Effect on the Properties of 4% Mn‐Doped ZnO Thin Films Grown by Sol‐Gel Spin Coating Deposition

Formation of carbon nanotubes and microsilica when obtaining crystalline silicon in three-phase electric ore smelting furnaces

Effect of Prolonged Annealing on the Morphology and Optical Properties of ZnO Films Produced via Magnetron Sputtering

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