Growth of Nanocubic MgO on Silicon Substrate by Pulsed Laser Deposition

Kaneko, Satoru; Ito, Takeshi; Soga, Masayasu; Motoizumi, Yu; Yasui, Manabu; Hirabayashi, Yasuo; Ozawa, Takeshi; Yoshimoto, Mamoru

doi:10.7567/jjap.52.01an02

Cited by 13 publications

(9 citation statements)

References 29 publications

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“…MgO thin films can be obtained using the following methods: metalorganic molecular beam epitaxy [10], metalorganic chemical vapor deposition [11], pulsed laser * corresponding author; e-mail: alexey.dyachenko@ukr.net deposition [12], reactive sputtering [5], chemical vapor deposition [13], sol-gel synthesis [14], spray pyrolysis [15], etc. Because of its simplicity, low cost, high-speed deposition and the possibility of obtaining films on large area substrates using various precursors, the spray pyrolysis is an effective non-vacuum method for obtaining high-quality thin films of oxides.…”

Section: Introductionmentioning

confidence: 99%

Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique

et al. 2016

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X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy, UV-visible photometry, and photoluminescence measurements were used to investigate the surface morphology and structural and optical properties of MgO films. Magnesium oxide films deposited by the spray pyrolysis technique were studied. The substrate temperature was varied from Ts = 643 K to 693 K. Magnesium chloride hexahydrate (MgCl2 ·6H2O), dissolved in deionized water, was used as the precursor solution. It was established that the single phase films crystallize into a cubic structure with very fine crystallite size (about 2 nm). The optical band gaps of the samples were varied from 3.64 eV to 3.70 eV. Also, the films have a high level of transmittance of 90%. Photoluminescence spectra show the emission peaks at approximately 412 nm (3.00 eV) and 524 nm (2.38 eV). The peak with the energy of 3.00 eV is ascribed to holes trapped in magnesium ion vacancies acting as acceptors (F + center). The broad emission peak at 524 nm is related to the presence of defects (F − centers) associated with oxygen ion vacancies.

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Section: Introductionmentioning

confidence: 99%

Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique

et al. 2016

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“…Yen et al 27 reported graphitic nano-ball grows at relatively high temperature and high pressure close to an atmospheric pressure. Interestingly, a cubic MgO grows on Si(001) substrate in high pressure of oxygen atmosphere 17,28 .…”

Section: Demonstration Experimentmentioning

confidence: 99%

“…The PLD is a well-known versatile method for preparing a variety of thin films [9][10][11][12][13][14][15][16] even for preparing nanoparticles 15,17 and high quality film such as one prepared by using molecular beam epitaxy (MBE) 18 . The PLD irradiates a carbon target and many species of carbon clusters can reach the surface of substrates via a plasma plume, as shown in Fig.…”

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Carbon clusters on substrate surface for graphene growth- theoretical and experimental approach

Kaneko

Tokumasu

Yasui

et al. 2022

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Growth morphology of carbon clusters deposited on different substrates were investigated by theoretical and experimental approach. For theoretical approach, molecular dynamics was employed to evaluate an adsorptive stability of different size of carbon clusters placed on different substrates. The adsorptive stability was estimated by the difference of total energy of supercell designed as carbon cluster placed on a certain crystal plane of substrate. Among the simulations of this study, carbon cluster flatly settled down on the surface of SrTiO$$_{3}$$ 3 (001). The result was experimentally verified with layer by layer growth of graphene by pulsed laser deposition in carbon dioxide atmosphere. The absorptive stability can be useful reference for screening substrate for any target material other than graphene.

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“…Many experimental techniques have been developed to obtain MgO materials, such as: thermolysis of an ultrathin Mg(OH) 2 precursor under a dynamic vacuum to obtain ultrathin single-crystalline MgO nanosheets with a preferential orientation stacked by (111) planes [6], sol-gel [14][15][16], chemical vapor deposition (CVD) [17], pulsed laser deposition [18], reactive sputtering [19], laser ablation [20], metal organic molecular beam epitaxy [21] and a chemical spray pyrolysis technique [3,22]. Currently, heavy environmental pollution has motivated researchers to seek new treatments, such as the extractivepyrolytic method [23], to remove pollutants and protect the environment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of MgO Thin Films Obtained by Spray Technique for Optoelectronic Applications

et al. 2021

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Magnesium oxide (MgO) thin films with different magnesium concentrations ([Mg2+] = 0.05, 0.1, 0.15 and 0.2 mol·L−1) in a spray solution have been successfully grown using a spray pyrolysis technique. X-ray diffraction (XRD), Maud software, FTIR spectroscopy, a confocal microscope, Wien2k software, spectrophotometry and a Photoluminescence spectrometer were used to investigate the structural, morphological and optical properties. XRD analysis revealed a better crystalline quality of the MgO thin layer synthesized with [Mg2+] = 0.15 mol·L−1, which crystallized into a face-centered cubic structure along the preferred orientation (200) lattice plan. The enhancement of the crystalline quality for the MgO thin film ([Mg2+] = 0.15 mol·L−1) was obtained, which was accompanied by an increment of 94.3 nm of the crystallite size. No secondary phase was detected and the purity phase of the MgO thin film was confirmed using Maud software. From the transmission spectra results, high transparent and antireflective properties of the MgO thin film were observed, with an average transmission value of about 91.48% in the visible range, which can be used as an optical window or buffer layer in solar cell applications. The films also have a high reflectance value in the IR range, which indicates that the highly reflective surface will prevent an increase in surface temperature under solar irradiation, which could be beneficial in solar cell applications. A direct band gap type was estimated using the Tauc relation which is close to the experimental value of 4.0 eV for optimal growth. The MgO material was tested for the degradation of methylene blue (MB), which reached a high photodegradation rate of about 83% after 180 min under sunlight illumination. These experimental trends open a new door for promising the removal of water contaminants for photocatalysis application.

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Growth of Nanocubic MgO on Silicon Substrate by Pulsed Laser Deposition

Cited by 13 publications

References 29 publications

Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique

Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique

Carbon clusters on substrate surface for graphene growth- theoretical and experimental approach

Synthesis and Characterization of MgO Thin Films Obtained by Spray Technique for Optoelectronic Applications

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