The impact of the electric field on the photoionization cross section, polarizability, and donor impurity binding energy in multilayered spherical quantum dot

Effect of dielectric mismatch on impurity binding energy, photoionization cross-section and stark shift of CdS/ZnSe core shell spherical quantum dots

“…On the other hand, the BE of shallow donors and acceptors in spherical GaAs/Al1-xGaxAs QDs for both a finite barrier and an infinitely high barrier was studied by Zhen-Yan Deng et al Dielectric screening has been proven to increase the binding energy for the central shallow donor and acceptor ion, especially as the dot radius decreases [63]. The binding energy and photoionization fraction (PICS) of the hydrogen impurity have been studied by many authors depending on the external EF and QD size [64][65][66][67][68]. L Shi et al [64] calculated the binding energy of a donor impurity trapped in a non-axial elliptical cylindrical core/shell quantum dot (ECCSQD) using a variational and perturbation approach.…”