Pressure effect on an exciton in a wurtzite AlN/GaN/AlN spherical core/shell quantum dot

2018 ◽  
Vol 8 (02) ◽  
pp. 527-532 ◽  
Author(s):  
N. Aghoutane ◽  
M. El-Yadri ◽  
E. Feddi ◽  
F. Dujardin ◽  
M. Sadoqi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Pressure Effect ◽  
Core Shell ◽  
Spherical Core ◽  
Image Position

Abstract

Linear and nonlinear magneto-optical properties of an off-center single dopant in a spherical core/shell quantum dot

2017 ◽  
Vol 524 ◽  
pp. 64-70 ◽  
Author(s):  
E. Feddi ◽  
A. Talbi ◽  
M.E. Mora-Ramos ◽  
M. El Haouari ◽  
F. Dujardin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Dot ◽  
Core Shell ◽  
Spherical Core ◽  
Linear And Nonlinear

Excitonic nonlinear optical properties in AlN/GaN spherical core/shell quantum dots under pressure

2019 ◽  
Vol 9 (02) ◽  
pp. 663-669 ◽  
Author(s):  
N. Aghoutane ◽  
M. El-Yadri ◽  
A. El Aouami ◽  
E. Feddi ◽  
G. Long ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Core Shell ◽  
Spherical Core ◽  
Image Position

Abstract

scholarly journals Optical Absorption Coefficient on-center donor impurity in a spherical core/shell quantum dots

2020 ◽  
Vol 330 ◽  
pp. 01041
Author(s):  
Safae M'zerd ◽  
M. El Haouari ◽  
E. Feddi ◽  
M. E. Mora-Ramos ◽  
A. Jorio ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Quantum Dot ◽  
Great Influence ◽  
Optical Absorption Coefficient ◽  
Core Shell ◽  
Donor Impurity ◽  
Third Order ◽  
Confining Potential ◽  
Mass Approximation ◽  
Spherical Core

The polaronic effect on the linear, third-order nonlinear and total optical absorption coefficients have been calculated in the case of GaAs/AlAs core/shell quantum dot, with the impurity is positioned at the central radial position of the GaAs shell. The calculations are realized in the framework of the effective mass approximation and the numerical results are obtained by using a variational method and an infinite confining potential. The results show that the polaronic effect has a great influence on optical properties of core/ shell quantum dot, he causes a red-shift of the nonlinear optical coefficients associated to light absorption. Also, the polaronic effect is enhanced with the decreasing of quantum dot radius.

Interplay between normal and abnormal stark shift according to the quantum dot spherical core/shell size ratio

2018 ◽  
Vol 98 (6) ◽  
pp. 252-265 ◽  
Author(s):  
A. Talbi ◽  
El Haouari ◽  
E. Feddi ◽  
F. Dujardin ◽  
M. Addou ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Stark Shift ◽  
Size Ratio ◽  
Core Shell ◽  
Shell Size ◽  
Spherical Core
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