论文部分内容阅读
The energy spectra of the ground state for an exciton(X)trapped by a neutral acceptor(A~0)in a quantumdot with a parabolic confinement have been calculated as a function of the electron-to-hole mass ratio σ by using thehyperspherical coordinates.We find that the(A~0,X)complex confined in a quantum dot has in general a larger bindingenergy than those in a two-dimensional quantum well and a three-dimensional bulk semiconductor,and the bindingenergy decreases with the increase of the electron-to-hole mass ratio.
The energy spectra of the ground state for an exciton (X) trapped by a neutral acceptor (A ~ 0) in a quantumdot with a parabolic confinement have been calculated as a function of the electron-to-hole mass ratio σ by using the hyperspherical coordinates . We find that the (A ~ 0, X) complex confined in a quantum dot has in general a larger bindingenergy than those in a two-dimensional quantum well and a three-dimensional bulk semiconductor, and the bindingenergy decreases with the increase of the electron-to-hole mass ratio.