Polaronic effects on the off-center donor impurity in AlAs/GaAs/SiO2 spherical core/shell quantum dots

2017 ◽  
Vol 111 ◽  
pp. 457-465 ◽  
Author(s):  
M. El Haouari ◽  
E. Feddi ◽  
F. Dujardin ◽  
R.L. Restrepo ◽  
M.E. Mora-Ramos ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Donor Impurity ◽  
Spherical Core

Linear and nonlinear optical properties of a single dopant in strained AlAs/GaAs spherical core/shell quantum dots

2017 ◽  
Vol 383 ◽  
pp. 231-237 ◽  
Author(s):  
M. El Haouari ◽  
A. Talbi ◽  
E. Feddi ◽  
H. El Ghazi ◽  
A. Oukerroum ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Core Shell ◽  
Spherical Core ◽  
Linear And Nonlinear

OPTICAL VIBRATION MODES IN SPHERICAL CORE-SHELL QUANTUM DOTS

2013 ◽  
Vol 27 (18) ◽  
pp. 1350134 ◽  
Author(s):  
Y. XING ◽  
X. X. LIANG ◽  
Z. P. WANG
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Vibration Modes ◽  
Electron Phonon Interaction ◽  
Interface Surface ◽  
System A ◽  
Surface Optical ◽  
Spherical Core ◽  
Dielectric Continuum ◽  
Optical Vibration

Using a dielectric continuum approach, the optical vibration modes in a spherical core-shell quantum dots (QDs) imbedded in a host nonpolar material are studied. The dispersion relation and the corresponding electron–phonon interaction Hamiltonian are derived. The numerical calculations for the CdSe/ZnS system are performed. The results reveal that there are three branches frequencies of interface/surface optical phonon in the system. A detailed discussion of the combined effects of the spatial confinement and dielectric mismatch between the dot and the host medium is given.

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