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Copper dopants impact enhanced behavior of Mn:Cu co-doped CdS nanocrystals (quantum dots) and their characteristics for optoelectronic applications

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Abstract

Mn and Cu:Mn co-doped CdS nanostructures were chemically prepared and deposited as thin films on glass slides by PLD technique. XRD peaks showed hexagonal nanostructure (Greenockite) phase. The studied parameters are as follows: strain, particle size, bond length, and stress to get more information about crystal structures. The analysis confirmed that the Cu/Mn ratio co-doping remarkably influenced the surface morphologies of the (CuxMn1−x) co-doped CdS (QDs) at (x = 0, 1, 2 and 3) at.%. The chemical composition analysis EDX announced that the Cu/Mn is present in the doped films. Two luminescence peaks appeared in the photoluminescence (PL) spectrum for all samples of the compounds referring recombination of the defect sates of Mn:CdS. The energy gap values of all deposited films were observed to be in the range of (2.97‒2.74) eV, optical absorbance has two absorption peaks, and shifted to higher wavelengths, UV–Vis particle size was in the range (2.47‒3.10 nm) and was estimated using Brus equation.

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Acknowledgements

This research is supported by the University of technology, Iraq and the authors thank all staff of the nanotechnology research center.

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Authors and Affiliations

  1. Nanotechnology and Advanced Materials Research Center, University of Technology, Baghdad, Iraq

    Kadhim R. Gbashi, Malek A. H. Muhi & Allaa A. Jabbar

  2. The ministry of Education, Baghdad, Iraq

    Natheer B. Mahmood

  3. University of Al-Mustansiriya, Baghdad, Iraq

    Raad F. Hasan

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  1. Kadhim R. Gbashi
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  2. Malek A. H. Muhi
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Correspondence to Kadhim R. Gbashi.

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Gbashi, K.R., Muhi, M.A.H., Jabbar, A.A. et al. Copper dopants impact enhanced behavior of Mn:Cu co-doped CdS nanocrystals (quantum dots) and their characteristics for optoelectronic applications. Appl. Phys. A 126, 628 (2020). https://doi.org/10.1007/s00339-020-03801-1

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