Excitons in InP quantum dots

被引：44
|
作者：
Fu, HX [1 ]
Zunger, A [1 ]
机构：
[1] Natl Renewable Energy Lab, Golden, CO 80401 USA
来源：
PHYSICAL REVIEW B | 1998年 / 57卷 / 24期
关键词：
D O I：
10.1103/PhysRevB.57.R15064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The excitonic spectrum of InP quantum dots is investigated using an atomistic pseudopotential approach for the single-particle problem and a state-dependent screened Coulomb interaction for the many-body problem. Our calculations show a different energy distribution of single-particle states relative to the commonly used k.p theory as well as significant parity mixing in the envelope functions, forbidden in 6x6 k.p. The calculated excitonic spectrum, including seven excitons, explains well the recent experimental measurements.
引用
收藏
页码：15064 / 15067
页数：4
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