scholarly journals Donor Impurity-Related Optical Absorption in GaAs Elliptic-Shaped Quantum Dots

2017 ◽  
Vol 2017 ◽  
pp. 1-18 ◽  
Author(s):  
M. A. Londoño ◽  
R. L. Restrepo ◽  
J. H. Ojeda ◽  
Huynh Vinh Phuc ◽  
M. E. Mora-Ramos ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Quantum Dots ◽  
Optical Absorption ◽  
Electric Field ◽  
Wave Functions ◽  
Basic Information ◽  
Donor Impurity ◽  
The Finite Element Method ◽  
Impurity States ◽  
Numerical Approaches

The conduction band and electron-donor impurity states in elliptic-shaped GaAs quantum dots under the effect of an externally applied electric field are calculated within the effective mass and adiabatic approximations using two different numerical approaches: a spectral scheme and the finite element method. The resulting energies and wave functions become the basic information needed to evaluate the interstate optical absorption in the system, which is reported as a function of the geometry, the electric field strength, and the temperature.

Donor impurity states and related optical responses in triangular quantum dots under applied electric field

2014 ◽  
Vol 73 ◽  
pp. 171-184 ◽  
Author(s):  
E. Kasapoglu ◽  
F. Ungan ◽  
H. Sari ◽  
I. Sökmen ◽  
M.E. Mora-Ramos ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electric Field ◽  
Applied Electric Field ◽  
Donor Impurity ◽  
Impurity States ◽  
Optical Responses

Voltage Distribution Studies in Polluted ZnO Arrester Using the FEMLAB

2011 ◽  
Vol 268-270 ◽  
pp. 412-417 ◽  
Author(s):  
Ferhat Tighilt
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Electric Field ◽  
Metal Oxide ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
The Finite Element Method ◽  
Voltage Distribution ◽  
Distribution Studies ◽  
Long Operation

The voltage and electric field distribution in an arrester are very important for its long operation 15 kV with and without pollution. In order to clarify the influence of pollution severity conditions on metal oxide surge arrester, the finite element method (FEM) compilation of the voltage distribution in the ZnO column varistors under different pollution layer conductivity (200 μS, 70μS, 20μS) and clean was employed using the FEMLAB package.

scholarly journals Donor impurity energy and optical absorption in spherical sector quantum dots

Heliyon ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. e03194 ◽  
Author(s):  
M.E. Mora-Ramos ◽  
A. El Aouami ◽  
E. Feddi ◽  
A. Radu ◽  
R.L. Restrepo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Absorption ◽  
Donor Impurity
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