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A Theoretical Study of the Heavy and Light Hole Properties of Cd1-xZnxS Quantum Dot Superlattices

Received: 27 August 2014     Accepted: 11 September 2014     Published: 30 September 2014
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Abstract

This work reports on a theoretical investigation of superlattices based on Cd1-xZnxS quantum dots embedded in an insulating material. This system, considered as a series of flattened cylindrical quantum dots with a finite barrier at the boundary, is studied using the tight binding approximation. The ground miniband width and the longitudinal effective mass, in the case of the heavy and light holes, have been computed as a function of zinc composition for different inter-quantum dot separations. An analysis of the results shows that the Zn composition x = 0.8 are appropriate to give rise a superlattice behavior for the light holes. As for the heavy holes, it has been showed the strong localization character of theses carriers in the Cd1-xZnxS nanostructures.

Published in International Journal of Materials Science and Applications (Volume 3, Issue 5)
DOI 10.11648/j.ijmsa.20140305.30
Page(s) 274-278
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Quantum Dots, Superlattices, Cd1-xZnxS, Heavy and Light Holes, Tight Binding Approximation, Specific Devices

References
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Cite This Article
  • APA Style

    Saber Marzougui, Nabil Safta. (2014). A Theoretical Study of the Heavy and Light Hole Properties of Cd1-xZnxS Quantum Dot Superlattices. International Journal of Materials Science and Applications, 3(5), 274-278. https://doi.org/10.11648/j.ijmsa.20140305.30

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    ACS Style

    Saber Marzougui; Nabil Safta. A Theoretical Study of the Heavy and Light Hole Properties of Cd1-xZnxS Quantum Dot Superlattices. Int. J. Mater. Sci. Appl. 2014, 3(5), 274-278. doi: 10.11648/j.ijmsa.20140305.30

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    AMA Style

    Saber Marzougui, Nabil Safta. A Theoretical Study of the Heavy and Light Hole Properties of Cd1-xZnxS Quantum Dot Superlattices. Int J Mater Sci Appl. 2014;3(5):274-278. doi: 10.11648/j.ijmsa.20140305.30

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  • @article{10.11648/j.ijmsa.20140305.30,
      author = {Saber Marzougui and Nabil Safta},
      title = {A Theoretical Study of the Heavy and Light Hole Properties of Cd1-xZnxS Quantum Dot Superlattices},
      journal = {International Journal of Materials Science and Applications},
      volume = {3},
      number = {5},
      pages = {274-278},
      doi = {10.11648/j.ijmsa.20140305.30},
      url = {https://doi.org/10.11648/j.ijmsa.20140305.30},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20140305.30},
      abstract = {This work reports on a theoretical investigation of superlattices based on Cd1-xZnxS quantum dots embedded in an insulating material. This system, considered as a series of flattened cylindrical quantum dots with a finite barrier at the boundary, is studied using the tight binding approximation. The ground miniband width and the longitudinal effective mass, in the case of the heavy and light holes, have been computed as a function of zinc composition for different inter-quantum dot separations. An analysis of the results shows that the Zn composition x = 0.8 are appropriate to give rise a superlattice behavior for the light holes. As for the heavy holes, it has been showed the strong localization character of theses carriers in the Cd1-xZnxS nanostructures.},
     year = {2014}
    }
    

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    T1  - A Theoretical Study of the Heavy and Light Hole Properties of Cd1-xZnxS Quantum Dot Superlattices
    AU  - Saber Marzougui
    AU  - Nabil Safta
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    N1  - https://doi.org/10.11648/j.ijmsa.20140305.30
    DO  - 10.11648/j.ijmsa.20140305.30
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
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    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20140305.30
    AB  - This work reports on a theoretical investigation of superlattices based on Cd1-xZnxS quantum dots embedded in an insulating material. This system, considered as a series of flattened cylindrical quantum dots with a finite barrier at the boundary, is studied using the tight binding approximation. The ground miniband width and the longitudinal effective mass, in the case of the heavy and light holes, have been computed as a function of zinc composition for different inter-quantum dot separations. An analysis of the results shows that the Zn composition x = 0.8 are appropriate to give rise a superlattice behavior for the light holes. As for the heavy holes, it has been showed the strong localization character of theses carriers in the Cd1-xZnxS nanostructures.
    VL  - 3
    IS  - 5
    ER  - 

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Author Information
  • Unité de Physique Quantique, Faculté des Sciences, Université de Monastir, Monastir, Tunisia

  • Unité de Physique Quantique, Faculté des Sciences, Université de Monastir, Monastir, Tunisia

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