Fabrication of ZnSe quantum dots under Volmer-Weber mode by metalorganic chemical vapor deposition

被引：69

作者：

Liao, MCH ^{[1
]}

Chang, YH ^{[1
]}

Chen, YF ^{[1
]}

Hsu, JW ^{[1
]}

Lin, JM ^{[1
]}

Chou, WC ^{[1
]}

机构：

[1] NATL CHUNG YUAN UNIV,DEPT PHYS,CHUNGLI 320,TAIWAN

来源：

APPLIED PHYSICS LETTERS | 1997年 / 70卷 / 17期

关键词：

D O I：

10.1063/1.118831

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The possibility of fabricating quantum dots under Volmer-Weber growth mode is investigated. Layers of ZnSe/ZnS were grown by metalorganic chemical vapor deposition on both Si and GaAs substrates. The images of surface morphology, taken by atomic force microscopy, showed that the layers were grown in three-dimensional islands. Blueshift was observed in the photoluminescence spectra up to room temperature for these samples. This blueshift was shown to originate from the ZnSe islands. The effect of ZnSe growth duration was investigated. It was found that the blueshift increased with shorter ZnSe growth durations, but this near band gap emission disappeared when the ZnSe growth duration was longer than 5 s. Effects of quantum confinement and strain were considered to resolve the origin of the blueshift. Our result suggests that carrier confinement plays a dominant role. (C) 1997 American Institute of Physics.

引用

页码：2256 / 2258

页数：3

共 18 条

[1] MULTIDIMENSIONAL QUANTUM WELL LASER AND TEMPERATURE-DEPENDENCE OF ITS THRESHOLD CURRENT [J].