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2010 | 117 | 6 | 941-944
Article title

Optical Properties of Multi-Stacked InAs Quantum Dots Embedded in GaAs/InGaAs Strained Layer and its Annealing Behaviors

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EN
Abstracts
EN
Multi-stacked InAs QDs embedded in ten periods of GaAs/In_{0.1}Ga_{0.9}As strained layers were grown by MBE and their optical properties were investigated by using PL spectroscopy. For the QDs embedded in ten periods of GaAs/In_{0.1}Ga_{0.9}As strained layers, the PL intensity is enhanced about 4.7 times and a narrower FWHM of 26 meV is observed compared to those of the conventional multi-stacked QDs. The PL spectra of the InAs QDs show blue-shifts of about 50 meV with increasing annealing temperature up to 850°C. At annealing temperature of 600°C, the FWHM of the PL peak is reduced to 16 meV and PL intensity is enhanced compared to those of the as-grown sample, which indicates improvement of size uniformity and crystal quality of the QDs.
Keywords
EN
Publisher

Year
Volume
117
Issue
6
Pages
941-944
Physical description
Dates
published
2010-06
received
2009-06-18
Contributors
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
author
  • Lighting Module Research and Development, Samsung Electro-Mechanics Co., Ltd., Suwon 443-373, Korea
author
  • Division of Advanced Materials Engineering, Chonbuk National University, Jeonju 561-756, Korea
author
  • Department of Physics, Yeungnam University, Gyeongsan 712-749, Korea
author
  • Division of General Education, Uiduk University, Gyeongju 780-713, Korea
author
  • Center for Nano Manufacturing, Inje University, Gimhae 621-749, Korea
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv117n610kz
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