Binding energy and photoionization cross section of hydrogenic impurities in elliptic cylindrical core/shell quantum dots under a non-axial electric field

First Study on the Electronic and Donor Atom Properties of the Ultra-Thin Nanoflakes Quantum Dots

“…In the past thirty years, scientists have paid considerable attention to the shape of the nanostructures, which is one of the most important factors to study the different properties of QD. In-depth researchers have been interested in spherical, cylindrical, and core/shell QD under external perturbation such as hydrostatic pressure, temperature, and electric and magnetic field [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. It is important to note that the optical properties associated with off-center hydrogenic impurity states confined in cylindrical QD with various electric and magnetic fields directions have been reported by Heyn and Duque [ 30 ].…”

“…Therefore, numerical calculations have been proved to clarify these physical phenomena. Additionally, Shi et al [ 31 ] have investigated the elliptic cylindrical core/shell QD and the non-axial electric field effects on the binding energy of the on-center hydrogenic impurity. They have found that the binding energy of cylindrical shape is higher than in elliptic cylinder shape.…”

Effect of size modulation and donor position on intersubbands refractive index changes of a donor within a spherical core/shell/shell semiconductor quantum dot

“…Proper adjustment of the physical properties of QDs is advantageous because of their potential applications in the development of semiconductor optoelectronic devices. For this reason, some optical properties of semiconductor QDs such as dipole transition [1,2], oscillator strength [3,4], photoionization cross-sections [5], optical absorption coefficients (OACs) [6,7] and refractive index changes (RICs) [3,8] have attracted the attention of researchers in experimental and theoretical studies in recent years.…”

“…Since the electronic and optical properties in a QD are affected by the impurity, the physical properties related to impurity have been investigated using different methods such as variational approximation [5], tightbinding model [9], perturbation theory [10] and diagonalization method [6]. Some studies have revealed that it is possible to realize a single dopant scheme in QDs [11][12][13].…”

Effect of magnetic field, size and donor position on the absorption coefficients related a donor within the core/shell/shell quantum dot

“…Because of the complicated practical geometries, boundary conditions and effects of the surrounding environment, it is generally not feasible to find analytical solutions using familiar standard methods. To accomplish this obstacle, researchers have used different methods such as variational approximation [15], tight-binding model [16], perturbation theory [17] and diagonalization method [6].…”