Experimental and DFT study of structural and optical properties of Ni-doped ZnO nanofiber thin films for optoelectronic applications

Berra, Sarra; Mahroug, Abdelhafid; Hamrit, S.; Mohamad, Ahmad Azmin; Zoukel, Abdelhalim; Berri, Saadi; Selmi, N.

doi:10.1016/j.optmat.2022.113188

Cited by 15 publications

(8 citation statements)

References 45 publications

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“…10 Compared to pure ZnO film, Fe-doped ZnO exhibited an important increasing in photocurrent. The improvement of electrical conductivity and photocurrent by Fe doping can be related to the increase of charge carriers concentration, photon absorption, and surface area by doping 12 that was confirmed by above results.…”

Section: Discussionsupporting

confidence: 77%

“…This is related to the increase in the density of state and number of electron transitions by more photons absorption. 15 Some research groups 12,25 reported the same results for other transition metal (TM) doping. It is noticed that these results are advantageous for some applications of ZnO such as photocatalytic and photodetection.…”

Section: Resultsmentioning

confidence: 68%

“…For the wurtzite structure (hexagonal) of ZnO, the lattice constants (a and c), Zn-O bond length (L), unit cell volume (V), atomic packing fraction (APF) and the lattice distortion (R) of samples were calculated using the relations: [12][13][14]…”

Section: Resultsmentioning

confidence: 99%

“…[2][3][4][5][6] Doping by transition metal (TM) elements such as Fe, Co, Mn, Ni, and Mg is an efficient technique for improving the properties of zinc oxide and its performances in different applications. [7][8][9][10][11][12] Among several elements for doping of ZnO, iron (Fe) is a suitable dopant not for spintronic devices only, but also in optoelectronic applications. Fe is a chemically stable element with two oxidation states, 2+ and 3+.…”

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confidence: 99%

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Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Mahroug

Berra

et al. 2023

ECS J. Solid State Sci. Technol.

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Pure and iron-doped ZnO films were deposited by thermal oxidation of sputtered metallic zinc and iron. The effect of iron (Fe) doping on the optical, morphology, structural, electrical, and photocurrent properties of zinc oxide films was examined. X-ray diffraction analysis shows a wurtzite structure with preferential orientation for all films. Fe doping reduced the crystallite size. The different calculated structure parameters confirm the incorporation of Fe (Fe3+) in the ZnO lattice. The surface morphology of thin films measured using atomic force microscopy revealed that the Fe doping could markedly decrease the grains size and the root mean square roughness of films. For all films, the transmittance analysis shows a transmittance above 90% in the visible region and with an increase in the Fe concentration, the transmittance, the absorption in the UV region, and the gap of ZnO were increased. The effect of Fe doping on different optical parameters was discussed in detail. The photoluminescence analysis of pure and doped ZnO exhibits one ultraviolet emission (384 nm) and green emission. Compared to pure ZnO, the ultraviolet peak intensity decreased as Fe content increased. The electrical resistivity was decreased and the photocurrent properties of ZnO were enhanced by Fe doping.

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Section: Discussionsupporting

confidence: 77%

Section: Resultsmentioning

confidence: 68%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Mahroug

Berra

et al. 2023

ECS J. Solid State Sci. Technol.

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“…It has been observed that the incorporation of nickel as a dopant in ZnO thin films results in the production of various emissions in the visible and near-infrared areas of the electromagnetic spectrum. The nickel concentration and the precise conditions under which annealing takes place both have a role in determining the locations of the emission peaks that are seen [28]. It has been shown that the presence of iron-doped ZnO thin films results in PL emissions that are located within the visible spectrum [29].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Photoluminescence and Optoelectronics Properties of Transition Metal-Doped ZnO Thin Films

Khan,

Nowsherwan,

Ali

et al. 2023

Molecules

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Thin films of zinc oxide (ZnO) doped with transition metals have recently gained significant attention due to their potential applications in a wide range of optoelectronic devices. This study focuses on ZnO thin films doped with the transition metals Co, Fe, and Zr, exploring various aspects of their structural, morphological, optical, electrical, and photoluminescence properties. The thin films were produced using RF and DC co-sputtering techniques. The X-ray diffraction (XRD) analysis revealed that all the doped ZnO thin films exhibited a stable wurtzite crystal structure, showcasing a higher structural stability compared to the undoped ZnO, while the atomic force microscopy (AFM) imaging highlighted a distinctive granular arrangement. Energy-dispersive X-ray spectroscopy was employed to confirm the presence of transition metals in the thin films, and Fourier-transform infrared spectroscopy (FTIR) was utilized to investigate the presence of chemical bonding. The optical characterizations indicated that doping induced changes in the optical properties of the thin films. Specifically, the doped ZnO thin film’s bandgap experienced a significant reduction, decreasing from 3.34 to 3.30 eV. The photoluminescence (PL) analysis revealed distinguishable emission peaks within the optical spectrum, attributed to electronic transitions occurring between different bands or between a band and an impurity. Furthermore, the introduction of these transition metals resulted in decreased resistivity and increased conductivity, indicating their positive influence on the electrical conductivity of the thin films. This suggests potential applications in solar cells and light-emitting devices.

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Effect of fluorine doping on the improvement of electrical and photocatalytic properties of ZnO films

Karakaya,

Kaba

2024

Appl. Phys. A

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ZnO:F thin films were produced by ultrasonic spray pyrolysis (USP) technique. For photovoltaic and photocatalytic applications, the properties of ZnO films have been tried to be improved by adding the flourine (F) element. The average optical transmittance was higher than 85%. Photoluminescence (PL) spectra depict blue, green and yellow emission in deposited films. Photocatalytic activity of ZnO and ZnO:F thin films was evaluated with methylene blue (MB) organic pollutant under UV irradiation. 5% doped ZnO:F film successfully decomposed ~ 80% using MB as photocatalyst. The lowest resistivity (3.54 × 10–3 Ωcm), high carrier concentration (2.52 × 1020 cm−3) and high hall mobility (8.28 cm2V−1 s−1) were observed in ZnO:F (5%) film. With this study, it was concluded that F-doped ZnO films were effective in the degradation of MB, which is widely used in the food and pollutant industries. Therefore, it makes ZnO:F films a promising material in both optoelectronic and photocatalytic applications due to their optimum properties.

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Experimental and DFT study of structural and optical properties of Ni-doped ZnO nanofiber thin films for optoelectronic applications

Cited by 15 publications

References 45 publications

Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Investigation of Photoluminescence and Optoelectronics Properties of Transition Metal-Doped ZnO Thin Films

Effect of fluorine doping on the improvement of electrical and photocatalytic properties of ZnO films

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