Effect of Ni doping on optical, structural, and morphological properties of ZnO thin films synthesized by MSILAR: Experimental and DFT study

Benaicha, Ismail; Mhalla, J.; Raidou, Abderrahim; Qachaou, A.; Fahoume, M.

doi:10.1016/j.mtla.2021.101015

Cited by 18 publications

(10 citation statements)

References 38 publications

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“…The relationship between changes in the lattice strain and the grain size with increasing TID can be observed in Figure 1d. This result agrees with the research conducted by [4,21], on the changes in metal oxide semiconductor properties towards radiation exposure, where the overall grain size decreases with TID. As the samples were exposed to gamma rays, the electron production due to Compton interaction sets the primary knock-on atoms (PKA's) in motion.…”

Section: Structural Properties Of Zno and Mg-doped Znosupporting

confidence: 92%

“…Based on the broadening curve, data suggest a polycrystalline nature of the fabricated samples [4,21]. Analysis on the FWHM values were taken from the highest peak (002).…”

Section: Structural Properties Of Zno and Mg-doped Znomentioning

confidence: 99%

“…As the samples were exposed to gamma rays, the electron production due to Compton interaction sets the primary knock-on atoms (PKA's) in motion. This occurs when the incident radiation gains sufficient energy to subsequently displace atoms within the secondary lattice structure, leading to a displacement cascade, resulting in structural distortion and swelling of the grain size [4,21].…”

Section: Structural Properties Of Zno and Mg-doped Znomentioning

confidence: 99%

“…Thus, the decrease in the band gap is closely associated to the structural defects observed in the structural analysis obtained in the XRD section, with the presence of cluster, cavities, surface roughness, etc. The decrease can also be attributed to the change in the Fermi level between the conduction and valence band [21].…”

Section: Optical Properties Of Zno and Mgznomentioning

confidence: 99%

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Effect of Gamma Radiation on Structural and Optical Properties of ZnO and Mg-Doped ZnO Films Paired with Monte Carlo Simulation

et al. 2022

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In space, geostationary electronics located within the outer van Allen radiation belt are vulnerable to gamma radiation exposure. In terms of application, implementing an electronic system in a high radiation environment is impossible via conventional engineering materials such as metal alloys as they are prone to radiation damage. Exposure to such radiation causes degradation and structural defects within the semiconductor component, significantly changing their overall density. The changes in the density will then cause electronic failure, known as the single event phenomena. Thus, the radiation response of material must be thoroughly investigated before the material is applied in a harsh radiation environment, specifically for flexible space borne electronic application. In this work, potential candidates for space-borne application devices: zinc oxide (ZnO) and Mg-doped ZnO thin film with a film thickness of 300 nm, were deposited onto an indium tin oxide (ITO) substrate via radio frequency (RF) sputtering method. The fabricated films were then irradiated by Co-60 gamma ray at a dose rate of 2 kGy/hr. The total ionizing dose (TID) effect of ZnO and Mg-doped ZnO thin films were then studied. From the results obtained, degradation towards the surface morphology, optical properties, and lattice parameters caused by increasing TID, ranging from 10 kGy–300 kGy, were evaluated. The alteration can be observed on the morphological changes due to the change in the roughness root mean square (RMS) with TID, while structural changes show increased strain and decreased crystallite size. For the optical properties, band gap tends to decrease with increased dose in response to colour centre (Farbe centre) effects resulting in a decrease in transmittance spectra of the fabricated films.

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Section: Structural Properties Of Zno and Mg-doped Znosupporting

confidence: 92%

“…Based on the broadening curve, data suggest a polycrystalline nature of the fabricated samples [4,21]. Analysis on the FWHM values were taken from the highest peak (002).…”

Section: Structural Properties Of Zno and Mg-doped Znomentioning

confidence: 99%

Section: Structural Properties Of Zno and Mg-doped Znomentioning

confidence: 99%

Section: Optical Properties Of Zno and Mgznomentioning

confidence: 99%

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Effect of Gamma Radiation on Structural and Optical Properties of ZnO and Mg-Doped ZnO Films Paired with Monte Carlo Simulation

et al. 2022

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“…The atomic positions in the three supercells (undoped, Ni-doped, and charge-doped) were refined at the DFT+U level. To this purpose, and considering previous investigations, the PBE functional was complemented by Hubbard U potentials of 6.5 eV on the O-p and Ni-d orbitals, and of 12 eV on the Zn-d orbitals [18,20,28]. Converged parameters were obtained using a 3x3x3 k-point mesh in the Monkhorst-Pack scheme and a 100 Ry kinetic energy cut-off.…”

Section: Nickel-doped Zinc Oxide Thin Films Made By Spray Pyrolysis: ...mentioning

confidence: 99%

Nickel-doped zinc oxide thin films made by spray pyrolysis: experimental characterization and theoretical analyses

Richard

Tejerina

2023

Cerâmica

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A study of ZnO-based ceramic films prepared by the spray-pyrolysis technique is presented. Pure and Ni-doped thin film samples were deposited as a coating on a glass substrate and experimentally characterized using scanning electron and atomic force microscopies, X-ray diffraction, and UV-vis-NIR spectroscopy. The morphologic, crystallographic, and optical properties were analyzed. Structural and electronic properties were compared to predictions obtained from computational calculations based on the density functional theory plus U approach (DFT+U). All these simulations provided additional data that could be used as a reference for material modeling and a better understanding of the experimental results. It was found that spray pyrolysis can be used to produce thin film ceramic samples (~300 nm) with low amounts (<5%) of Ni impurities substitutionally located at the cationic sites of the ZnO wurtzite host structure. The results of this investigation showed that an experimental and theoretical study aided in a better characterization of the thin films, and helped to outline a more robust model of the samples.

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Atmospheric growth of ZnO thin films doped and co-doped with Ni and Co via UMVD: experimental and theoretical study

Benaicha

Jellal

Mhalla

et al. 2022

J Mater Sci: Mater Electron

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Effect of Ni doping on optical, structural, and morphological properties of ZnO thin films synthesized by MSILAR: Experimental and DFT study

Cited by 18 publications

References 38 publications

Effect of Gamma Radiation on Structural and Optical Properties of ZnO and Mg-Doped ZnO Films Paired with Monte Carlo Simulation

Effect of Gamma Radiation on Structural and Optical Properties of ZnO and Mg-Doped ZnO Films Paired with Monte Carlo Simulation

Nickel-doped zinc oxide thin films made by spray pyrolysis: experimental characterization and theoretical analyses

Atmospheric growth of ZnO thin films doped and co-doped with Ni and Co via UMVD: experimental and theoretical study

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