Effect of Cu Doped in MgO on Nanostructures and their Band Gap Energies

Chayed, Nor Fadılah; Kamarulzaman, Norlıda; Badar, Nurhanna; Elong, Kelimah

doi:10.4028/www.scientific.net/ssp.290.323

Cited by 13 publications

(3 citation statements)

References 18 publications

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“…This decrease could be the result of Zn inducing various defects, like oxygen vacancies, into the MgO lattice. As a results, Zn doping causes the MgO bands to enter new energy levels and decreases the band gap of the MgO thin lms [19,23]. We observed also that when the band gap is decreased, inversely proportional to the Urbach energy.…”

Section: Optical Propertiesmentioning

confidence: 50%

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Abed,

Djaaboube,

Waszkowska

et al. 2023

Preprint

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In this study transparent dielectric magnesium oxide doped zinc thin films (MgO: Zn) were deposited on glass substrate using dip coating technique with a varied concentration of zinc (0, 3, 5 and 7 at %) , employing magnesium acetate and zinc acetate as starting materials. The obtained films were annealed at 500 °C for 6 hours. The effect of Zn doping concentration on the morphological, optical and nonlinear optical properties has been studied. The optical transmittance of the produced thin films indicated that these films are transparent in the visible region with a transparency of 90 %. The optical band gap and Urbuch energy of the films were found. The value of optical band gap varies from 3.94 to 4.04 eV. The surface morphology shows that the films are uniform, homogeneous and dense. We using the rotational maker fringe with Nd:YAG laser at 1064 nm for the third harmonic generation measurements. Finally, the values of the third order nonlinear susceptibilities were calculated.

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Section: Optical Propertiesmentioning

confidence: 50%

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Abed,

Djaaboube,

Waszkowska

et al. 2023

Preprint

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show abstract

“…Different methods have been reported for the synthesis of metal ion doped MgO NPs. For example, synthesis of Ag-doped MgO NPs via successive ionic layer adsorption and reaction (SILAR) [9], Ce-doped MgO NPs by sol-gel [10], and Cu-doped MgO NPs by self-propagating combustion [11]. Parvizi and coworkers observed that Zn doping decreased the band gap energy and increased the optical activity of MgO [12].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis, Characterization, Photocatalytic Activity, and Cytotoxicity of Ag-Doped MgO Nanoparticles

et al. 2021

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Due to unique physicochemical properties, magnesium oxide nanoparticles (MgO NPs) have shown great potential for various applications, including biomedical and environmental remediation. Moreover, the physiochemical properties of MgO NPs can be tailored by metal ion doping that can be utilized in photocatalytic performance and in the biomedical field. There is limited study on the photocatalytic activity and biocompatibility of silver (Ag)-doped MgO NPs. This study was planned for facile synthesis, characterization, and photocatalytic activity of pure and silver (Ag)-doped MgO NPs. In addition, cytotoxicity of pure and Ag-doped MgO NPs was assessed in human normal umbilical vein endothelial cells (HUVECs). Pure MgO NPs and Ag-doped (1, 2, 5, and 7.5 mol%) MgO NPs were prepared via a simple sol-gel procedure. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), photoluminescence (PL), and X-ray photoelectron spectroscopy (XPS) were used to characterize the prepared samples. XRD results showed the preparation of highly crystalline NPs with no impurity peaks. TEM and SEM studies indicate smooth surfaces with almost spherical morphology of MgO NPs, and Ag-doping did not change the morphology. Elemental composition study suggested that Ag is uniformly distributed in MgO particles. Intensity of the PL spectra of MgO NPs decreased with increasing the concentration of Ag dopants. In comparison to pure MgO NPs, Ag-MgO NPs showed higher degradation of methylene blue (MB) dye under UV irradiation. The improved photocatalytic activity of Ag-MgO NPs was related to the effect of dopant concentration on reducing the recombination between electrons and holes. Cytotoxicity studies showed good biocompatibility of pure and Ag-doped MgO NPs with human normal umbilical vein endothelial cells (HUVECs). These results highlighted the potential of Ag-doped MgO NPs in environmental remediation.

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“…These new compound will exhibit different characteristics than their parent material that will be useful for future applications [6,7]. Previously, doped MgO nanostructures has been reported with various dopant elements such as Cu, Zn, Ca, etc and results has been proved that the band gap change when it undergo doping [8][9][10][11]. MgO doped with tunable band gap will become as a promising material for potential semiconductor applications.…”

Section: Introductionmentioning

confidence: 99%

Effect of Li Substitution in MgO Nanostructured on Band Gap Energy via Combustion Synthesis Method

Chayed

Badar

Elong

et al. 2020

SSP

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Preparation of MgO and Mg0.9Li0.2O materials using self-propagating combustion method are done to investigate the effect of substitution doping on the band gap energy. The synthesis condition has been optimized to obtain pure and single phase of MgO and Mg0.9Li0.2O materials and was confirmed by X-Ray Diffraction (XRD). The morphology obtained from field emission scanning electron microscopy (FESEM) is spherical and rounded polyhedral shape with agglomeration of crystallites for MgO and Mg0.9Li0.2O materials respectively. The crystallite size of MgO and Mg0.9 Li0.2O samples is between 50 nm to 120 nm and 200 nm to 1500 nm respectively. The band gap was determined by UV-Vis NIR spectrophotometer and it was found that the band gap obtained for MgO nanostructure is 6.10 eV which is lower than bulk MgO of 7.8 eV. The presence of Li in the MgO had caused changes in morphology, crystallite size and band gap narrowing to 3.83 eV.

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Effect of Cu Doped in MgO on Nanostructures and their Band Gap Energies

Cited by 13 publications

References 18 publications

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Facile Synthesis, Characterization, Photocatalytic Activity, and Cytotoxicity of Ag-Doped MgO Nanoparticles

Effect of Li Substitution in MgO Nanostructured on Band Gap Energy via Combustion Synthesis Method

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