Influence of electric field on electronic optical quantum transitions in a quantum dot - quantum ring semiconductor nanostructure

2021 ◽  
Author(s):  
Ihor Hnidko ◽  
Vasyl Gutsul ◽  
Ivan Koziarskyi ◽  
Oleksandr Makhanets
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Quantum Ring ◽  
Semiconductor Nanostructure ◽  
Quantum Transitions

scholarly journals Effect of Electric Field on Energy Spectrum and Intersubband Absorption Coefficient of Electron in Spherical Multilayered Quantum dot CdSe/ZnS/CdSe

2017 ◽  
Vol 18 (3) ◽  
pp. 297-301
Author(s):  
V.A. Holovatsky ◽  
M.Y. Yakhnevych
Keyword(s):  
Energy Spectrum ◽  
Quantum Dot ◽  
Electric Field ◽  
Absorption Coefficient ◽  
Electron Energy Spectrum ◽  
Wave Functions ◽  
Core Electron ◽  
Mass Approximation ◽  
The Matrix ◽  
Quantum Transitions

In this paper, the energy spectrum of electron and complete set of exact wave functions are obtained in the framework of effective mass approximation and rectangular potential barriers model for the CdSe/ZnS/CdSe nanostructure. Using the matrix method, the numeric calculations are performed for the electron energy spectrum as a function of electric field strength in multilayered quantum dot. It is shown that the electric field effects on the core electron in the ground state and causes its tunneling into the outer potential well. Thus, the overlap of wave functions varies essentially, influencing the dipole momentum of quantum transitions and light absorption coefficient.

POLARON IN A QUANTUM DOT UNDER AN ELECTRIC FIELD

2007 ◽  
Vol 21 (24) ◽  
pp. 1635-1642
Author(s):  
MIAN LIU ◽  
WENDONG MA ◽  
ZIJUN LI
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Field Intensity ◽  
Ground State Energy ◽  
Ground State ◽  
Electric Field Intensity ◽  
State Energy ◽  
Theoretical Study ◽  
The Moment ◽  
Transformation Methods

We conducted a theoretical study on the properties of a polaron with electron-LO phonon strong-coupling in a cylindrical quantum dot under an electric field using linear combination operator and unitary transformation methods. The changing relations between the ground state energy of the polaron in the quantum dot and the electric field intensity, restricted intensity, and cylindrical height were derived. The numerical results show that the polar of the quantum dot is enlarged with increasing restricted intensity and decreasing cylindrical height, and with cylindrical height at 0 ~ 5 nm , the polar of the quantum dot is strongest. The ground state energy decreases with increasing electric field intensity, and at the moment of just adding electric field, quantum polarization is strongest.

Competing influence of an in-plane electric field on the Stark shifts in a semiconductor quantum dot

2011 ◽  
Vol 99 (18) ◽  
pp. 181109 ◽  
Author(s):  
T. Nakaoka ◽  
Y. Tamura ◽  
T. Saito ◽  
T. Miyazawa ◽  
K. Watanabe ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Semiconductor Quantum Dot

scholarly journals Impurity-related intraband absorption in coupled quantum dot-ring structure under lateral electric field

2015 ◽  
Vol 74 ◽  
pp. 421-425 ◽  
Author(s):  
M.G. Barseghyan ◽  
H.M. Baghramyan ◽  
D. Laroze ◽  
J. Bragard ◽  
A.A. Kirakosyan
Keyword(s):  
Quantum Dot ◽  
Electric Field ◽  
Ring Structure ◽  
Lateral Electric Field ◽  
Intraband Absorption
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