Effect of precursor nature on physical properties of chemically sprayed MgO thin films for optoelectronic application

Tlili, Maher; Jebbari, N.; Naffouti, Wafa; Kamoun, N.

doi:10.1140/epjp/s13360-020-00706-z

Cited by 15 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, an increase in Mg concentration to 0.2 mol•L −1 results in a slight deterioration of crystallinity. The crystallite size D (nm) was calculated using the Debye-Scherrer equation [3,24]:…”

Section: Xrd Analysismentioning

confidence: 99%

“…In order to refine the experimental XRD spectra and confirm the face-centered cubic structure of the MgO material, we used the Maud software (Materials Analysis Using Diffraction) based on the Rietveld analysis [3]. Additionally, we could estimate the lattice parameter and crystallite size and we could extract the secondary phases, which may exist along with the MgO phase.…”

Section: Rietveld Analysismentioning

confidence: 99%

“…A [1,2]. It is characterized by high transmission values in the visible range near to 90% [3] and a wide direct band gap of 7.8 eV for pure MgO [4]. Heo et al [5] measured a gap energy lower than 7.8 eV and attributed the low band-gap energies to the existence of defects in type F S and F B .…”

Section: Introductionmentioning

confidence: 99%

“…A MgO material has the following main advantages: non-toxicity [6], an abundance of its constituents as well as chemical and physical stability [7]. These properties recommend MgO for a wide range of applications in which its antibacterial [8], antimicrobial [9] and photo-catalytic properties [3,10] could be used. Moreover, MgO can be used for photovoltaic devices [11,12] and gas sensor applications [13].…”

Section: Introductionmentioning

confidence: 99%

“…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%

See 4 more Smart Citations

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

et al. 2021

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Xrd Analysismentioning

confidence: 99%

Section: Rietveld Analysismentioning

confidence: 99%