Development of automated spray pyrolysis setup for chemical vapour deposition like growth of thin solid films

Jeyadheepan, K.; Karthick, P.; Sanjeeviraja, C.

doi:10.1088/1748-0221/14/04/p04002

Cited by 6 publications

(4 citation statements)

References 65 publications

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“…For the fabrication of one-and two-dimensional zinc oxide structures, one method that is used is spray pyrolysis [72,73]. It involves the formation of spray droplets containing precursor compounds, which are then subjected to high-temperature pyrolysis.…”

Section: Formation Of One-and Two-dimensional Zno and Cuo Structuresmentioning

confidence: 99%

“…The choice of method depends on the specific requirements of research or application, as well as the desired structural and electronic characteristics of the ZnO material. For the fabrication of one-and two-dimensional zinc oxide structures, one method that is used is spray pyrolysis [72,73]. It involves the formation of spray droplets containing precursor compounds, which are then subjected to high-temperature pyrolysis.…”

Section: Formation Of One-and Two-dimensional Zno and Cuo Structuresmentioning

confidence: 99%

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Creation of One- and Two-Dimensional Copper and Zinc Oxides Semiconductor Structures

Murzin,

Kazanskiy

2023

Applied Sciences

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The most effective methods for the synthesis of nanostructured copper and zinc oxides, which have unique properties and potential applications in a variety of fields including electronics, photonics, sensorics, and energy conversion, are analyzed. Special attention is paid to laser-based methods for synthesizing oxide nanostructures, with an emphasis on the importance of controlling power density distribution to influence the quality and properties of the nanomaterials. The great significance of wavefront shaping techniques for controlling laser-initiated processes is highlighted, which enable precise control over the phase and amplitude of light waves to achieve desired outcomes in optics and laser-assisted formation of one- and two-dimensional structures of oxide semiconductor materials. Diffractive computer optics is presented as a powerful tool for precise beam control. The significance of laser-induced thermochemical processes for creating and improving the properties of ZnO and CuO-based nanomaterials is discussed. The presented analysis shows that the synthesis of nanocomposites based on ZnO and CuO using pulse-periodic laser treatment, coupled with precise laser beam control using free-form diffractive optics, presents novel opportunities for applications in optoelectronics, sensor technology, electronics and portable energy sources manufacturing, and various other fields.

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Section: Formation Of One-and Two-dimensional Zno and Cuo Structuresmentioning

confidence: 99%

Section: Formation Of One-and Two-dimensional Zno and Cuo Structuresmentioning

confidence: 99%

Creation of One- and Two-Dimensional Copper and Zinc Oxides Semiconductor Structures

Murzin,

Kazanskiy

2023

Applied Sciences

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“…The experimental setup for the spray deposition process has been previously described in Ref. [40][41][42]. The resulting films exhibited transparency, amorphous structure, homogeneity, and good adhesion to the substrate.…”

Section: Experimental Procedure: General Informationmentioning

confidence: 99%

Enhancing Electrical Properties and Seebeck Effects of WO3 Thin Films Using Spray Pyrolysis: Insights into the Conductivity and Carrier Type

Asghari

Zad

Eshghi

2023

Advanced Energy Conversion Materials

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This study focuses on enhancing the electrical and thermoelectric properties of tungsten trioxide (WO3) thin films using the spray pyrolysis technique. Three samples, namely A1, A2, and A3, were prepared by depositing the films onto glass substrates at different deposition rates: R1 = 1 mL/min, R2 = 3 mL/min, and R3 = 7 mL/min, respectively. Subsequently, the films underwent annealing at 500 °C for 2 hours in the air. A detailed investigation was conducted to analyze the structural, morphological, optical, and electrical properties of the WO3 thin films. The Field Emission Scanning Electron Microscope (FE-SEM) images revealed the formation of circular strings with varying diameters for all layers. The diameter of each string decreased as the deposition rate increased. X-ray diffraction (XRD) structural analysis indicated that, before annealing, sample A1 exhibited a polycrystalline nature with mixed tetragonal-hexagonal phases, while the other two samples were amorphous. After annealing, sample A3 also became polycrystalline. Moreover, the UV-Vis spectra analysis demonstrated a monotonic decrease in the band gap of the layers with increasing spray rate, potentially attributed to the attenuation of the quantum confinement effect. The Seebeck effect was used to authenticate the n-type conductivity of the WO3 layers, as the Seebeck effect and conductivity exhibited a direct connection. Furthermore, the current-voltage variation was found to align with the oxygen vacancies sites. Remarkably, the sample A3 with the highest deposition rate exhibited the lowest resistivity.

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“…Stoichiometry can also easily be controlled in spray pyrolysis. Several parameters which includes drying temperature, spray rate, nozzle to target distance, precursor and solvent govern the properties of spray-deposited ZnO thin films (Rajeshmon, 2013;Jeyadheepan et al, 2019). The influence of solvent on spray-deposited thin films is very crucial because, the residence time of microsized droplets in drying chamber is heavily dependent on vapor pressure of the solvent.…”

Section: Introductionmentioning

confidence: 99%

Gravimetric Profile of Hydrocarbon Degrading Bacterial and Fungal Isolates from Contaminated Soil Samples in Ado-Ekiti, Nigeria

Idris¹,

Ogunmefun²,

Tuesimi³

2021

AIJNAS

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One of the biological compounds limiting soil water retention capacity is oil when present due to its hydro-nature. However, some microorganisms exhibit the capacity to degrade oil as a source of carbon, whereby the soil quality is retained and enhanced. Hence, the gravimetric profile of hydrocarbon degrading bacteria and fungi isolated from oil contaminated soil samples was investigated. Soil samples were collected from surface and 10m depth from six different mechanic workshops and generator sites. The pour plate technique was used to isolate the microorganisms. All pure isolates were sub-cultured using Bushnell Haas agar and the isolated bacteria were identified by their morphological and biochemical characteristics. The soil samples pH range was 4.3 - 6.4. Bacteria isolated included Pseudomonas spp., Staphylococcus spp., Microccocus spp., Acinetobacter spp., and Bacillus spp. The fungi isolated included Aspergillus spp., Rhizopus spp., Candida spp., Trichoderma spp. and Penicillium spp. Degradation of kerosene, diesel, crude oil, engine oil, and spent engine oil was allowed using Acinetobacter baumanni, P. aeruginosa, B. subtilis, and S. aureus. Gravimetric analyses were used to determine the percentage of petroleum hydrocarbon degraded by bacterial isolates. The highest percentage of degradation was between P. aeruginosa and B. subtilis. Pseudomonas aeruginosa degraded 97.4% diesel, 88.2% kerosene, 71.3% crude oil, 80.7% engine oil and 78.2% spent engine oil; while Bacillus subtilis degraded 71% diesel, 97% kerosene, 89.6% crude oil, 87% engine oil and 72.6% spent engine oil. This study revealed that bacterial and fungal isolates from oil contaminated soils exhibited the potentials to degrade oil and bioremediation using these microorganisms was possible.

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Development of automated spray pyrolysis setup for chemical vapour deposition like growth of thin solid films

Cited by 6 publications

References 65 publications

Creation of One- and Two-Dimensional Copper and Zinc Oxides Semiconductor Structures

Creation of One- and Two-Dimensional Copper and Zinc Oxides Semiconductor Structures

Enhancing Electrical Properties and Seebeck Effects of WO3 Thin Films Using Spray Pyrolysis: Insights into the Conductivity and Carrier Type

Gravimetric Profile of Hydrocarbon Degrading Bacterial and Fungal Isolates from Contaminated Soil Samples in Ado-Ekiti, Nigeria

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