Energy Spectra of Excitons Bound to a Neutral Acceptor in Quantum Dots |
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| Authors: | XIE Wen-Fang |
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| Affiliation: | Department of Physics, Guangzhou University, Guangzhou510405, China;Department of Physics, Shanxi University, Taiyuan 030006, China |
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| Abstract: | The energy spectra of the ground state for an exciton(X) trapped by a neutral acceptor (A0) in a quantum dot with aparabolic confinementhave been calculated as a function of the electron-to-hole mass ratio σ by using the hyperspherical coordinates.We find that the (A0,X) complex confined in aquantum dot has in general a larger binding energythan those in a two-dimensional quantum well and a three-dimensional bulksemiconductor, and the binding energy decreases with the increase of theelectron-to-hole mass ratio. |
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| Keywords: | exciton complex quantum dot |
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