Uncorrelated Excitonic Properties in Multilayered Cylindrical Quantum Dot

Abstract:

The unbound exciton properties in multilayered cylindrical quantum dot (CQD) (core/shell/shell) have been studied theoretically, within the effective mass approximation and two-band model. The uncorrelated energy of an exciton confined in GaAs/Ga_1-x1Al_x1As/Ga_1-x2Al_x2As CQD as a function of the core and first shell radius is presented. The numerical results show that the quantum dot size and the confinement potentials depth significantly adjust the ground state uncorrelated energy of exciton. However, the exciton wave function parameters are dependent on the core and first shell radius (R₁ and R₂), as well as the concentration of the barrier’s materials.

• Periodical: Solid State Phenomena (Volume 335)
• Pages: 43-52
• DOI: https://doi.org/10.4028/p-gh5bxa
• Online since: July 2022
• Authors: Mohammed Hbibi*, Omar Mommadi, Reda Boussetta, Soufiane Chouef, Laaziz Belamkadem, Abdelaaziz El Moussaouy, Juan Alejandro Vinasco, Carlos Alberto Duque, Farid Falyouni
• Keywords: Exciton, Excitonic Wave Function, Multilayerd Quantum Dot, Uncorrelated Energy

References

[1] P. Harrison, A. Valavanis, Quantum Wells, Wires and Dots: theoretical and computational physics of semiconductor nanostructures, John Wiley & Sons (2016).

DOI: 10.1002/9781118923337

[2] A.V. Zvelindovsky, Nanostructured soft matter: experiment, theory, simulation and perspectives, Springer Science & Business Media (2007).

[3] Y. Li, F. Qian, J. Xiang, Charles M.lieber, Nanowire electronic and optoelectronic devices, Materials today 9 (2006) 18-27.

DOI: 10.1016/s1369-7021(06)71650-9

[4] L. Jacak, P. Hawrylak, A. Wojs, Quantum Dots, Springer, Berlin (1998).

[5] A. El Moussaouy, N. Ouchani, Y. El Hassouani, A. Benami, Bound polaron states in GaAs/Ga1-xAlxAs cylindrical dot under hydrostatic pressure effect, Surf. Sci. 624 (2014) 95–102.

DOI: 10.1016/j.susc.2014.02.005

[6] L. Belamkadem, O. Mommadi, J.A. Vinasco, D. Laroze, A. El Moussaouy, M. Chnafi, C.A. Duque, Electronic properties and hydrogenic impurity binding energy of a new variant quantum dot, physica E 126 (2021) 114642.

DOI: 10.1016/j.physe.2021.114642

[7] Z. Zeng, C.S. Garoufalis, A.F. Terzis, S. Baskoutas, Linear and nonlinear optical properties of ZnO/ZnS and ZnS/ZnO core shell quantum dots: Effects of shell thickness, impurity, and dielectric environment, J. Appl. Phys. 114 (2013) 023510.

DOI: 10.1063/1.4813094

[8] X. Peng, P. Logan, Electronic properties of strained Si/Ge core-shell nanowires, Appl. Phys. Lett. 96 (2010) 143119.

DOI: 10.1063/1.3389495

[9] A.C. Bartnik, F.W. Wise, A. Kigel, E. Lifshitz, Electronic structure of PbSe/PbS core-shell quantum dots, Phys. Rev. B 75 (2007) 245424.

[10] Y. Nandan, Mohan, S. Mehata, Wavefunction Engineering of Type-Ⅰ/Type-Ⅱ Excitons of CdSe/CdS Core-shell Quantum Dots, Sci. Rep. 9 (2019) 1-11.

DOI: 10.1038/s41598-018-37676-3

[11] A.D. Lad, P.P. Kiran, D. More, G.R. Kumar, S. Mahamuni, Two-photon absorption in ZnSe and ZnSe/ZnS core/shell quantum structures, Appl. Phys. Lett. 92 (2008) 043126.

DOI: 10.1063/1.2839400

[12] A. Chafai F. Dujardin I. Essaoudi A. Ainane, Energy spectrum of an exciton in a CdSe/ZnTe Type-Ⅱ core/shell spherical quantum dot, Superlattice. Microstruct. 101 (2017) 40-48.

DOI: 10.1016/j.spmi.2016.11.017

[13] H. Sun, B.C. Liu, and Q. Tian, Polaron effects in cylindrical GaAs/AlxGa1-xAs core-shell nanowires, Chin. Phys. B 26 (2017) 097302.

DOI: 10.1088/1674-1056/26/9/097302

[14] A. El Moussaouy, N. Ouchani, Y. El Hassouani, D. Abouelaoualim, Temperature and hydrostatic pressure effects on exciton-phonon coupled states in semiconductor quantum dot, Superlattice. Microstruct.73 (2014) 22-37.

DOI: 10.1016/j.spmi.2014.05.006

[15] O. Mommadi, A. El Moussaouy, M. El Hadi, A. Nougaoui, Excitonic properties in an asymmetric quantum dot nanostructure under combined influence of temperature and lateral hydrostatic pressure, Mater. Today: Proc. 13 (2019) 1023–1032.

DOI: 10.1016/j.matpr.2019.04.067

[16] O. Mommadi, A. EL Moussaouy, M. Chnafi, M. El Hadi, A. Nougaoui, H. Magrez, Exciton-phonon properties in cylindrical quantum dot with parabolic confinement potential under electric field, Physica E 118 (2020) 113903.

DOI: 10.1016/j.physe.2019.113903

[17] R. Betancourt-Riera, R. Betancourt-Riera, L.A. Ferrer-Moreno, A.D. Sañu-Ginarte, Theory of electron Raman scattring in a semiconductor core/shell quantum well wire, Physica B 563 (2019) 93–100.

DOI: 10.1016/j.physb.2019.04.004

[18] O. Mommadi, A. El Moussaouy, M. El Hadi, M. Chnafi, Y. M. Meziani, C. A. Duque, Stark shift and exciton binding energy in parabolic quantum dots: hydrostatic pressure, temperature, and electric field effects, Philos. Mag. 101 (2021) 753-775.

DOI: 10.1080/14786435.2020.1862430

[19] G.O. Eren, S. Sadeghi, H. B. Jalali, M. Ritter, M. Han, I. Baylam, R. Melikov, A. Onal, F. Oz, M. Sahin, C.W. Ow-Yang, A. Sennaroglu, R.T. Lechner, S. Nizamoglu ACS Applied Materials & Interfaces  13 (2021), 32022-32030.

DOI: 10.1021/acsami.1c08118

[20] E. B. Al, Effect of magnetic field, size and donor position on the absorption coefficients related a donor within the core/shell/shell quantum dot. Opt. Quant. Electron. 53, 676 (2021).

DOI: 10.1007/s11082-021-03340-w