An Exciton bound to a Neutral Donor in Quantum Dots |
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作者姓名: | 解文方 |
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作者单位: | DepartmentofPhysics,GuangzhouUniversity,Guangzhou510405 |
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摘 要: | The binding energies for an exciton(X) trapped in a two-dimensional quantum dot by a neutral donor have been calculated using the method of few-body physics for the heavy hole(σ=0.196) and the light hole (σ=0.707).We find that the (D^0,X) complex confined in a quantum dot has in general a larger binding energy than those in a two-dimensional quantum well and a three-dimensional bulk semiconductor,and the binding energy than those in a two-dimensional quantum well and a three-dimensional bulk semiconductor,and the binding energy increases with the decrease of the dot radius.At dot radius R→∞,we compare our calculated result with the previous results.
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关 键 词: | 量子力学 半导体量子斑点 激发带 |
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