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

Saber Marzougui; Nabil Safta

doi:doi:10.11648/j.nano.20140203.13

| Peer-Reviewed

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

Saber Marzougui, Nabil Safta

Published in American Journal of Nanoscience and Nanotechnology (Volume 2, Issue 3)

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

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

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

[1]	A. J. Peter and C. W. Lee.(2012), Electronic and optical properties of CdS/CdZnS nanocrystals, Chinese Phys. B 21: 087302.
[2]	L. Zhou, Y. Xing and Z. P. Wang(2012), Hydrogenic impurity bound polaron in a quantum dot quantum well structure, Eur. Phys. J. B. 85: 212.
[3]	F. Sco-tognella, G. Lanzani, L. Manna, F. Tassone and M. Zavelani-Rossi. (2012), Study of high-er-energy core states in CdSe/CdS octapod nanocrystals by ultrafast spectroscopy, Eur. Phys. J. B. 85: 128.
[4]	B. Bhattacharjee, S. K. Mandal, K. Chakrabarti, D. Ganguli and S. Chaudhui. (2002), Optical properties of Cd1−xZnxS nanocrystallites in sol–gel silica matrix, J. Phys. D: Appl. Phys. 35: 2636-2642.
[5]	L. Cao, S. Huang and S. E. (2004), ZnS/CdS/ZnS quantum dot quan-tum well produced in inverted micelles, J. colloid Interface Sci. 273: 478-482.
[6]	H. Kumano, A. Ueta and I. Suemune. (2002), Modified spontaneous emission properties of CdS quantum dots embedded in novel three-dimensional microcavities, Physica E 13: 441-445
[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
[8]	C. S. Pathak, D. D. Mishra, V. Agarawala, M. K. Mandal. (2012), Mechanochemical synthesis, characterization and optical properties of zinc sulphide nanoparticles, Indian J. Phys 86: 777-781.
[9]	S. Roy, A. Gogoi and G. A. Ahmed. (2010), Size dependent optical characterization of semiconductor particle: CdS embedded in polymer matrix, Indian J. Phys. 84: 1405-1411
[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
[11]	K.K Nanda, S.N. Sarangi, S. Mohanty, S.N. Sahu. (1998), Optical properties of CdS nanocrystalline films prepared by a precipitation technique, Thin Solid Films 322: 21-27.
[12]	H. Yükselici, P. D. Persans and T. M. Hayes.(1995), Optical studies of the growth of Cd1-xZnxS nanocrystals in borosilicate glass, Phys. Rev. B. 52: 11763.
[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.
[19]	A. Sakly, N. Safta, H. Mejri, A. Ben Lamine. (2011), The electronic states calculated using the sinusoidal potential for Cd1−xZnxS quantum dot superlattices, J. Alloys Compd.509: 2493–2495
[20]	S. Marzougui, N. Safta. (2014),The electronic band parameters calculated by the Triangular potential model for Cd1-xZnxS quantum dot superlattices, IOSR-JAP 5 (5) : 36-42
[21]	S. Marzougui. (2011), A study of the excited states in the flattened cylindrical quantum dots of Cd1-xZnxS, Master, University of Monastir.

Cite This Article

Plain Text BibTeX RIS

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

Copy | Download

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

Copy | Download

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

Copy | Download

@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}
}

Copy | Download

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
PY  - 2014
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  -

Copy | Download

Author Information

Saber Marzougui

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

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

Download PDF

Sections

Plain Text BibTeX RIS

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

Copy | Download

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

Copy | Download

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

Copy | Download

@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}
}

Copy | Download

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
PY  - 2014
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  -

Copy | Download