Self-organized lattice of ordered quantum dot molecules

被引：29

作者：

von Lippen, T ^{[1
]}

Nötzel, R ^{[1
]}

Hamhuis, GJ ^{[1
]}

Wolter, JH ^{[1
]}

机构：

[1] Eindhoven Univ Technol, eiTT COBRA Interuniv Res Inst, NL-5600 MB Eindhoven, Netherlands

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 01期

关键词：

D O I：

10.1063/1.1771460

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ordered groups of InAs quantum dots (QDs), lateral QD molecules, are created by self-organized anisotropic strain engineering of a (In,Ga)As/GaAs superlattice (SL) template on GaAs (311)B in molecular-beam epitaxy. During stacking, the SL template self-organizes into a two-dimensionally ordered strain modulated network on a mesoscopic length scale. InAs QDs preferentially grow on top of the nodes of the network due to local strain recognition. The QDs form a lattice of separated groups of closely spaced ordered QDs whose number can be controlled by the GaAs separation layer thickness on top of the SL template. The QD groups exhibit excellent optical properties up to room temperature. (C) 2004 American Institute of Physics.

引用

页码：118 / 120

页数：3

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