Cross-sectional nanophotoluminescence studies of Stark effects in self-assembled quantum dots

被引：20

作者：

Htoon, H

Keto, JW

Baklenov, O

Holmes, AL

Shih, CK ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Austin, TX 78712 USA

[2] Univ Texas, Dept Elect & Comp Engn, Austin, TX 78712 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 06期

关键词：

D O I：

10.1063/1.125866

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

By using a cross-sectional geometry, we show the capability to perform single-dot spectroscopy in self-assembled quantum dots using far-field optics. By using this method, we study the quantum-confined Stark effect in self-assembled quantum dots. For single-stack quantum dots (QDs), we find that the spectra are redshifted with an increase in electric field. For vertically coupled double-stack quantum dots, while most of the QDs are redshifted, some QDs show blueshifted spectra, which can be interpreted as an evidence of coupled QD molecules. (C) 2000 American Institute of Physics. [S0003-6951(00)02106-9].

引用

收藏

页码：700 / 702

页数：3

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