Search Results - "Fakkahi, A."
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Hydrostatic pressure, temperature, and electric field effects on the hydrogenic impurity binding energy in a multilayered spherical quantum dot
Published in Applied physics. A, Materials science & processing (01-12-2021)“…Within the effective mass and the parabolic band approximations, the binding energy of an on-center shallow donor impurity in a GaAs / Ga 1 - x Al x As…”
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2
Effect of impurity position and electric field on the optical absorption coefficients and oscillator strength in spherical multilayer quantum dot
Published in European physical journal plus (19-09-2022)“…In this paper, in the effective mass approximation, we have investigated the effects of the impurity position, external electric field, and the structure sizes…”
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3
The impact of the electric field on the photoionization cross section, polarizability, and donor impurity binding energy in multilayered spherical quantum dot
Published in Applied physics. A, Materials science & processing (01-03-2023)“…In the present paper, we look at how the applied electric field (EF) and structure sizes affect the shallow donor impurity binding energy ( E b ),…”
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4
Hydrogenic donor-related binding energy and diamagnetic susceptibility in multilayer cylindrical quantum dots under hydrostatic pressure
Published in Applied physics. A, Materials science & processing (01-08-2023)“…This study employs the finite element method based on the effective-mass approximation (EMA) to numerically investigate the behavior of impurities in…”
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5
Magnetic field effect on the linear and nonlinear refractive index and optical absorption of a donor in a GaAs quantum ring
Published in Physica scripta (01-08-2023)“…Abstract The effects of the magnetic field ( γ ), the radial position of impurity and the degree of confinement on the oscillator strength (OS), refractive…”
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6
The spatial electric field effect on the impurity binding energy and self-polarization in a double quantum dot
Published in European physical journal plus (27-08-2022)“…This paper provides a theoretical investigation of the binding energy E b and self-polarization of a hydrogenic shallow donor impurity located in a GaAs - Ga 1…”
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7
The nonlinear optical rectification and second harmonic generation of a single electron confined in a multilayer spherical quantum dot
Published in Optical and quantum electronics (01-05-2023)“…In the present paper, we have performed a theoretical investigation of the influence of the Kratzer potential on the nonlinear optical rectification…”
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8
Modeling and simulation of the influence of quantum dots density on solar cell properties
Published in European physical journal plus (12-02-2023)“…Based on the finite element method using the FEniCS computing platform and python programming, we solve the Schrödinger equation within the effective mass…”
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9
Pressure, temperature and electric field effects on the photoionization cross section in a multilayered spherical quantum dot
Published in European physical journal plus (15-11-2022)“…In this paper, within the effective mass approximation and by using the finite element method, we have studied the photoionization cross section (PCS) and the…”
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10
The influence of the electric and magnetic fields on donor impurity electronic states and optical absorption coefficients in a core/shell GaAs/Al0.33Ga0.67As ellipsoidal quantum dot
Published in European physical journal plus (31-08-2023)“…The lowest five energies levels (ELs) and optical absorption coefficient (OAC) of confined donor in a core/shell ellipsoidal quantum dot were theoretically…”
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11
Finite element method simulation of electronic and optical properties in multi-InAs/GaAs quantum dots
Published in European physical journal plus (05-03-2024)“…The Schrödinger equation, which describes the behaviour of an electron with a single dopant inside the system, has been constructed. It is composed of three…”
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12
Pressure and temperature influences on the nonlinear optical rectification of an impurity in a symmetrical double quantum dot
Published in European physical journal plus (29-03-2023)“…This work presented a study of nonlinear optical rectification (NOR) in a double quantum dot (DQD) made of GaAs / Ga 1 - η Al η As under the influence of…”
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13
Hydrostatic pressure, electric field, non-parabolicity and polaronic mass effects on the donor binding energy in a semimagnetic double quantum well
Published in European physical journal plus (27-10-2023)“…This study aims to examine the effects of electric field ( F ) , hydrostatic pressure ( P ) , non-parabolicity (NP), and polaronic mass (PM) on the binding…”
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14
Strain-induced modulations in nonlinear optical rectification of core/shell quantum dots within an MEH-PPV polymer matrix under electric field: a 3D finite-element modeling study
Published in Discover applied sciences (20-10-2024)“…This research aims to explore how the MEH-PPV polymer matrix and the strength of the applied field (EF) affect an electron confined within strained CdSe/ZnSe…”
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15
Delta-doping modulation of three quantum wells under the influence of an electric field
Published in APL materials (01-10-2024)“…The impact of delta-doping modulation and electric field influence within a nanostructure consisting of three GaAs quantum wells (QWs) separated by AlGaAs…”
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16
Optical absorption coefficients of a single electron in a multilayer spherical quantum dot with a Kratzer-like confinement potential
Published in Results in optics (01-12-2023)“…The current study looks at how the Kratzer confinement potential affects the linear, third-order nonlinear, and total optical absorption coefficients (ACs) of…”
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17
Influence of structural factors and impurity position on second harmonic generation in double-quantum box GaAs-Ga1-xAlxAs structures
Published in European physical journal plus (19-09-2024)“…This study investigates the effects of structural factors on the properties of second harmonic generation (SHG) in double-quantum box structures (DQBs) made of…”
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18
The influence of the dielectric surrounding medium on energy levels and optical responses of an on-center impurity in a core/shell spherical nanodot
Published in European physical journal plus (09-07-2024)“…In the context of effective mass approximation and using the finite element method, we studied the optical properties of a hydrogenic donor impurity centered…”
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19
Study of hydrostatic pressure, electric and magnetic fields effects on the donor binding energy in multilayer cylindrical quantum dots
Published in Physica. E, Low-dimensional systems & nanostructures (01-03-2021)“…The current paper provides a theoretical study of the binding energy of an off-center donor impurity in wurtzite InGaN/GaN multilayer cylindrical quantum dots…”
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20
Investigation of the nonlinear optical rectification coefficient in a multilayered spherical quantum dot
Published in Optical materials (01-10-2022)“…In the framework of the effective mass approximation, we have investigated the effects of hydrostatic pressure, temperature, nonparabolicity of the band, and…”
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