Preparation and characterization of MgO thin films by a simple nebulized spray pyrolysis technique

Fu, Xiaorong; Wu, Guangming; Song, Shanjun; Zhang, Song; Duo, Xinzhong; Lin, Chenglu

doi:10.1016/s0169-4332(99)00126-9

Cited by 36 publications

(19 citation statements)

References 19 publications

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“…The highest value of transmittance is obtained at substrate temperatures of T s = 663 K and 683 K. The layers obtained at the lower temperatures show lowest values of transmittance (643 and 653 K). This is a good correlation with the literature data [2,8,20,22,32,33]. The decrease in transmittance could be explained by the increased concentration of defects and the presence of additional grain boundaries.…”

Section: Resultssupporting

confidence: 91%

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: Resultssupporting

confidence: 91%

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

et al. 2016

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“…Similar preferential growth morphology on different substrates like Si (100) [21], alumina coated sapphire [22] and corning 7059 glass [23] using various precursors (Mg 2,4-pentanedionate, bis 2,2,6,6-tetramethyl-3,5-heptanedionato magnesium) in different solvents have been reported by many research groups. In this paper, we report the preliminary results on the growth of MgO thin films on quartz substrates using hydrated magnesium acetate [Mg (CH 3 COO) 2 .4H 2 O] as precursor in ethanol with tri-ethylene glycol (TEG) suitable for high temperature processing.…”

Section: Introductionsupporting

confidence: 64%

“…Additionally, the decrease of film deposition rate is also related to the increase of film density with increasing temperature. The higher diffusion energy supplied by the higher temperature is to fill in the internal defects, which results in the formation of denser films [28,29]. So, MgO films deposited at 600°C have higher density values, which could restrict the inter-diffusion of Mg atoms and H 2 O thereby providing an increased chemical stability under various working conditions [30].…”

Section: Resultsmentioning

confidence: 99%

Spray pyrolysis deposition and characterization of highly (100) oriented magnesium oxide thin films

Raj¹,

Nehru

Jayachandran

et al. 2007

Cryst. Res. Technol.

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Transparent dielectric thin films of MgO has been deposited on quartz substrates at different temperatures between 400 and 600°C by a pneumatic spray pyrolysis technique using Mg(CH 3 COO) 2 .4H 2 O as a single molecular precursor. The thermal behavior of the precursor magnesium acetate is described in the results of thermogravimetry analysis (TGA) and differential thermal analysis (DTA). The prepared films are reproducible, adherent to the substrate, pinhole free and uniform. Amongst the different spray process parameters, the substrate temperature effect has been optimized for obtaining single crystalline and transparent MgO thin films. The films crystallize in a cubic structure and X-ray diffraction measurements have shown that the polycrystalline MgO films prepared at 500°C with (100) and (110) orientations are changed to (100) preferred orientation at 600°C. The MgO phase formation was also confirmed with the recorded Fourier Transform Infrared (FTIR) results. The films deposited at 600°C exhibited highest optical transmittivity (>80%) and the direct band gap energy was found to vary from 4.50 to 5.25 eV with a rise in substrate temperature from 500 to 600°C. The measured sheet resistance and the resistivity of the film prepared at 600°C were respectively 10 13 Ω/□ and 2.06x107 Ω cm. The surface morphology of the prepared MgO thin films was examined by atomic force microscopy.

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“…Before deposition the substrates surface were cleaned in the tub with ethanol for 5 minutes. Unlike studies [15][16][17][18][19][20] where layers of MgO obtained using precursor solutions based on magnesium acetate or magnesium acetylacetonate. We used the 0.2 M magnesium chloride hexahydrate (MgCl 2 6H 2 O) aqueous solution as a precursor solution.…”

Section: A Synthesis Of Mgo Filmsmentioning

confidence: 99%

“…In most existing works [15][16][17][18][19][20] the authors have studied MgO films, deposited by spray pyrolysis technique, using precursors based on magnesium acetate or magnesium acetylacetonate. These works are mainly devoted to the study of their electrical and chemical properties, while dependence of the structural and substructure characteristics of thin layers on the physical and chemical conditions obtaining is poorly investigated.…”

Section: Introductionmentioning

confidence: 99%

Structure and Substructure Properties of Magnesium Oxide Thin Films

Diachenko¹,

Opanasuyk²,

Kurbatov³

et al. 2016

Invert. Journ. of Scien. & Techn.

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Abstract-In this paper we have conducted a comprehensive study of the structural and substructural characteristics of magnesium oxide films by X-ray diffraction analysis. Thin films MgO were prepared by spray pyrolysis technique from a magnesium chloride solution. Identified the phase composition, the lattice constant, crystallite size and coherent scattering domain size, microstrain level of the films. The optimal conditions for the application of homogeneous single-phase films of stoichiometric composition were identified.

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Preparation and characterization of MgO thin films by a simple nebulized spray pyrolysis technique

Cited by 36 publications

References 19 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

Spray pyrolysis deposition and characterization of highly (100) oriented magnesium oxide thin films

Structure and Substructure Properties of Magnesium Oxide Thin Films

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