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A Theoretical Study of the Electronic Properties of Cd1-xZnxS quantum Dot Superlattices

Received: 15 May 2014     Accepted: 26 May 2014     Published: 10 June 2014
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Abstract

The present work is aimed to investigate theoretically the electronic properties 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 have been computed, for the electrons, versus the Zn composition and the inter-quantum dot separation as well. An analysis of the results shows that the Zn compositions x = 0.4 and x = 0.6 are appropriate to give rise a superlattice behavior for conduction electrons in a range of inter –sheet separations studied.

Published in American Journal of Nanoscience and Nanotechnology (Volume 2, Issue 3)
DOI 10.11648/j.nano.20140203.13
Page(s) 45-49
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, Tight Binding Approximation, Non Volatile Memories

References
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[7] Y. C. Zhang, W. W. Chen and X. Y. Hu. (2007), In air synthesis of hexagonal Cd1 − xZnxS nanoparticles from sin-gle-source molecular precursors, Mater. Lett. 61: 4847-4850
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[10] A. U. Ubale and A. N. Bargal. (2010), Characterization of nanostructured photosensitive cadmium sulphide thin films grown by SILAR deposition technique, Indian J. Phys. 84: 1497-1507
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[13] Q. Pang, B.C. Guo, C.L. Yang, S. H. Yang, M.L. Gong, W.K. Ge and J. N. Wang. (2004), Cd1−xMnxS quantum dots: new synthesis and characterization, Journal of Crystal Growth, 269: 213-217.
[14] M.C. Klein, F. hache, D. Ricard and C. Flytzanis. (1990), Size de-pendence of electron-phonon coupling in semiconductor nanospheres: The case of CdSe, Phys Rev. B. 42: 11123.
[15] N. Safta, A. Sakly, H. Mejri and Y. Bouazra. (2006), Electronic and optical properties of Cd1-xZnxS nanocrystals, Eur. Phys. J. B 51: 75-78
[16] A. Sakly, N. Safta, A. Mejri, H. Mejri, A. Ben Lamine. (2010), The Excited Electronic States Calculated for Cd1-xZnxS Quantum Dots Grown by the Sol-Gel Technique, J. Nanomater, ID746520.
[17] N. Safta, A. Sakly, H. Mejri and M. A. Zaïdi. (2006), Electronic properties of multi-quantum dot structures in Cd 1-xZnxS alloy semiconductors, Eur. Phys. J. B 53: 35 – 38
[18] A. Sakly, N. Safta, H. Mejri, A. Ben Lamine. (2009), The electronic band parameters calculated by the Kronig–Penney method for Cd1−xZnxS quantum dot superlattices, J. Alloys Compd. 476: 648–652.
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  • APA Style

    Saber Marzougui, Nabil Safta. (2014). A Theoretical Study of the Electronic Properties of Cd1-xZnxS quantum Dot Superlattices. American Journal of Nano Research and Applications, 2(3), 45-49. https://doi.org/10.11648/j.nano.20140203.13

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    ACS Style

    Saber Marzougui; Nabil Safta. A Theoretical Study of the Electronic Properties of Cd1-xZnxS quantum Dot Superlattices. Am. J. Nano Res. Appl. 2014, 2(3), 45-49. doi: 10.11648/j.nano.20140203.13

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    AMA Style

    Saber Marzougui, Nabil Safta. A Theoretical Study of the Electronic Properties of Cd1-xZnxS quantum Dot Superlattices. Am J Nano Res Appl. 2014;2(3):45-49. doi: 10.11648/j.nano.20140203.13

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  • @article{10.11648/j.nano.20140203.13,
      author = {Saber Marzougui and Nabil Safta},
      title = {A Theoretical Study of the Electronic Properties of Cd1-xZnxS quantum Dot Superlattices},
      journal = {American Journal of Nano Research and Applications},
      volume = {2},
      number = {3},
      pages = {45-49},
      doi = {10.11648/j.nano.20140203.13},
      url = {https://doi.org/10.11648/j.nano.20140203.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.nano.20140203.13},
      abstract = {The present work is aimed to investigate theoretically the electronic properties 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 have been computed, for the electrons, versus the Zn composition and the inter-quantum dot separation as well. An analysis of the results shows that the Zn compositions x = 0.4 and x = 0.6 are appropriate to give rise a superlattice behavior for conduction electrons in a range of inter –sheet separations studied.},
     year = {2014}
    }
    

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  • TY  - JOUR
    T1  - A Theoretical Study of the Electronic Properties of Cd1-xZnxS quantum Dot Superlattices
    AU  - Saber Marzougui
    AU  - Nabil Safta
    Y1  - 2014/06/10
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    N1  - https://doi.org/10.11648/j.nano.20140203.13
    DO  - 10.11648/j.nano.20140203.13
    T2  - American Journal of Nano Research and Applications
    JF  - American Journal of Nano Research and Applications
    JO  - American Journal of Nano Research and Applications
    SP  - 45
    EP  - 49
    PB  - Science Publishing Group
    SN  - 2575-3738
    UR  - https://doi.org/10.11648/j.nano.20140203.13
    AB  - The present work is aimed to investigate theoretically the electronic properties 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 have been computed, for the electrons, versus the Zn composition and the inter-quantum dot separation as well. An analysis of the results shows that the Zn compositions x = 0.4 and x = 0.6 are appropriate to give rise a superlattice behavior for conduction electrons in a range of inter –sheet separations studied.
    VL  - 2
    IS  - 3
    ER  - 

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Author Information
  • Unité de Physique Quantique, Faculté des Sciences, Université de Monastir, Avenue de l’Environnement, 5000 Monastir, Tunisia

  • Unité de Physique Quantique, Faculté des Sciences, Université de Monastir, Avenue de l’Environnement, 5000 Monastir, Tunisia

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