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Influence of the Size and Dielectric Environments on the Optical Properties in CdS/ZnS Core–Shell Quantum Dot

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Abstract

In this work, the electronic and optical properties of CdS/ZnS core–shell quantum dots (CSQDs) capped in different matrices were investigated theoretically. Through the effective mass approximation (EMA) and the density matrix approach (DMA), the quantized energy levels and their corresponding wave functions of the system were obtained by solving the Schrödinger equation in a spherical coordinates system. In addition, the effects of the incident optical intensity, the number of dots per unit volume, dielectric mismatch of the organic and inorganic matrix, and geometric parameters of the structure, such as the core/shell radius ratio for CdS/ZnS CSQDs on the optical properties, were evaluated and discussed. The results revealed that both the size and dielectric environments had a substantial effect on the optical features of these nanostructures.

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Acknowledgements

The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through a large group Research Project under grant number RGP2/19/44.

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Authors and Affiliations

  1. Laboratory of Condensed Matter and Nanosciences (LMCN), Department of Physics, Faculty of Sciences of Monastir, 5019, Monastir, Tunisia

    Naima Yahayaoui, Nabil Zeiri & Moncef Said

  2. Sivas Cumhuriyet University Turkey, Sivas, Turkey

    Pınar Baser

  3. Department of Physics, Faculty of Science and Arts, King Khalid University, Mohayel Aser, Abha, Saudi Arabia

    Salah Saadaoui

Authors
  1. Naima Yahayaoui
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  2. Nabil Zeiri
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  3. Pınar Baser
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  4. Moncef Said
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  5. Salah Saadaoui
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Corresponding author

Correspondence to Nabil Zeiri.

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The authors, a signatory below, declare by the present statement that all the exhibited results in this work could be very useful in the design of optoelectronic and electro-optic devices. This work opens perspectives in nanostructures field research for further advances in optoelectronics research.

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The authors declare no competing interests.

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Yahayaoui, N., Zeiri, N., Baser, P. et al. Influence of the Size and Dielectric Environments on the Optical Properties in CdS/ZnS Core–Shell Quantum Dot. Plasmonics 18, 1489–1498 (2023). https://doi.org/10.1007/s11468-023-01868-z

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  • DOI: https://doi.org/10.1007/s11468-023-01868-z

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