Theory for quantum-dot quantum wells: Pair correlation and internal quantum confinement in nanoheterostructures

被引：65

作者：

Bryant, GW

机构：

[1] Molecular Physics Division, National Institute of Standards and Technology, Gaithersburg

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.52.R16997

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spherical quantum-dot-quantum-well nanocrystallites, with internal radial quantum-well band profiles, can now be fabricated. Pair states in these nanoheterostructures are determined by electron-hole attraction, global confinement in the dot, and local confinement within the well. Configuration-interaction calculations using effective-mass models with screened pair interaction give accurate exciton energies for CdS/HgS quantum-dot quantum wells. Binding energy and pair correlation are suppressed but pair-oscillator strengths are enhanced by adding a HgS quantum well to a CdS quantum dot.

引用

页码：16997 / 17000

页数：4

共 9 条

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