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Preparation and characterization of PbS quantum dots by laser ablation technique in the presence of benzene

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Abstract

Nd-Yag laser with wavelength (λ) = 1064nm at different energy (5, 6.5, 8) J/cm2 and fixed number of pulses (600 pulses) was used to prepare PbS QDs in aromatic solvent benzene for the first time in this work according to our knowledge. A liquid medium used the benzene for ablation to prevent the PbS QDs from forming clumps. UV–Vis spectroscopy, X-ray diffraction (XRD), Transmission electron microscopy, Fourier-transform infrared spectroscopy, and Photoluminescence measurement were used to examine the optical, structural, as well as morphological features of PbS QDs. Depending on XRD patterns, the synthesized PbS QDs exhibit a nanocrystalline and cubic (FCC) structure. The direct optical energy gap of PbS QDs within the range of (2), (2.4) and (2.5) eV. The Photoluminescence emission spectra and excitation spectra of PbS the emission peak fixed around 400–470 nm, the crystallites sizes are found from 4.5 to 7 nm recorded.

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Funding

The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.

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Authors and Affiliations

  1. Division Applied Science, University of Technology, Baghdad, Iraq

    Zahraa W. Hassan, Mohammed S. Mohammed & Muslim F. Jawad

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  1. Zahraa W. Hassan
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  2. Mohammed S. Mohammed
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  3. Muslim F. Jawad
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Contributions

ZWH, MFJ and MSM wrote the main manuscript text. ZWH, MSM and MFJ prepared figures. ZWH, and MFJ devised the idea and helped while preparing and supervising the final draft. All authors reviewed the manuscript.

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Correspondence to Muslim F. Jawad.

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Hassan, Z.W., Mohammed, M.S. & Jawad, M.F. Preparation and characterization of PbS quantum dots by laser ablation technique in the presence of benzene. J Mater Sci: Mater Electron 35, 30 (2024). https://doi.org/10.1007/s10854-023-11734-7

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