| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Exploration of structural, optical, and photoluminescent properties of (1-x)NiCo2O4/xPbS nanocomposites for optoelectronic applications |
| Zein K Heiba1,†, Mohamed Bakr Mohamed1,2, Noura M Farag1, and Ali Badawi3,4,‡ |
1 Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt;
2 Physics Department, Faculty of Science, Taibah University, Al-Madina al Munawarah, Saudi Arabia;
3 Department of Physics, College of Science, Taif University, P. O. Box 11099, Taif 21944, Saudi Arabia;
4 Department of Physics, University College of Turabah, Taif University, P. O. Box 11099, Taif 21944, Saudi Arabia |
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Abstract The (1-x)NiCo2O4/xPbS (0≤ x≤ 0.2) nanocomposite samples are synthesized using the hydrothermal and thermolysis procedures. The different phases developed in the obtained nanocomposite samples are accurately determined using the x-ray diffraction technique equipped with a line-detector. The percentage of the formed phases (NiCo2O4 (NCO), PbS, PbSO4), structural and microstructure parameters are determined using Rietveld quantitative phase analysis. The transmission electron microscope (TEM) images and Rietveld analysis reveal almost isotropic particle size in the nano range with a very narrow size distribution. The obtained phase percentage of PbS and PbSO4 are smaller than nominated values (x) suggesting dissolving of some Pb and S ions into NCO which is then confirmed by the analysis of Fourier-transform infrared (FTIR) spectra of nanocomposite samples. The absorption spectra are modified upon doping NCO with PbS. The optical band gaps of the nanocomposites increase as the amount of PbS augments. The effect of alloying on extinction coefficient, refractive index, dielectric constant, optical conductivity, the intensity, and emitted color from the photoluminescence of the nanocomposite samples are also studied. The refractive index value of NCO and NCO-PbS nanocomposite samples exhibit normal dispersions. The photoluminescent measurements reveal that the NCO-PbS nanocomposites can emit a violet color. The improvement in the values of the nonlinear optical (NLO) parameters of pristine NCO at high frequencies or the nanocomposite samples at low frequencies, are made them used in NLO photonic devices.
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Received: 13 November 2021
Revised: 08 December 2021
Accepted manuscript online: 15 December 2021
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PACS:
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78.67.Sc
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(Nanoaggregates; nanocomposites)
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74.25.Gz
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(Optical properties)
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78.55.-m
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(Photoluminescence, properties and materials)
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77.84.Bw
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(Elements, oxides, nitrides, borides, carbides, chalcogenides, etc.)
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| Fund: The authors thank the support of Taif University Researchers Supporting Project Number TURSP-2020/12, Taif University, Taif, Saudi Arabia. |
Corresponding Authors:
Zein K Heiba, Ali Badawi
E-mail: zein_kh@yahoo.com;daraghmeh@tu.edu.sa
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Cite this article:
Zein K Heiba, Mohamed Bakr Mohamed, Noura M Farag, and Ali Badawi Exploration of structural, optical, and photoluminescent properties of (1-x)NiCo2O4/xPbS nanocomposites for optoelectronic applications 2022 Chin. Phys. B 31 067801
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