关键词: 有效质量, 束缚能, 微扰法, 量子点

Abstract: The binding energies of the ground state and the low-lying excited states of hydrogen-like impurity in a InAs/GaAs quantum dot are investigated by applying the effective mass approximation and the perturbation. In the two-dimensional polar coordinate, the electron Schrodinger equation is solved exactly in a parabolic confinement potential. The numerical results show that the binding energies of the ground state and the low - lying excited states of hydrogen-like impurity sensitively depend on the frequency of the parabolic confinement potential and the spectrum is shifted forward to the blue because of hydrogen-like impurites. These results are useful for designing and fabricating the QD devices.

Key words: effective mass, binding energies, perturbation, quantum dot