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2008 | 114 | 4 | 919-923
Article title

Evolution of InAs Quantum Dots during Annealing Process

Content
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Languages of publication
EN
Abstracts
EN
InAs quantum dots were grown by molecular beam epitaxy in the Stranski-Krastanow growth mode and annealed under N_2 atmospheres at different temperatures. The evolution of quantum dots with the annealing temperature increasing were slightly different with the results reported in the literature. Atomic force microscopy investigations of quantum dots uncapped layer show a size initial increase followed by a prompt decrease as annealing temperature increases. It was found that the photoluminescence signal on quantum dots capped with GaAs layer was first slightly red-shifted and then blue-shifted with an increase in annealing temperature. The blue-shift can be attributed to In/Ga interdiffusion in annealing process. Red-shift of optical features indicates the change of the quantum dots compostion, size, and strain from the barrier.
Keywords
EN
Publisher

Year
Volume
114
Issue
4
Pages
919-923
Physical description
Dates
published
2008-10
received
2008-05-05
(unknown)
2008-07-04
Contributors
author
  • Tianjin Institute of Urban Construction, Tianjin 300384, China
  • The Key Lab of Advanced Technique and Fabrication, for Weak-Light Nonlinear Photonics Materials, Ministry of Education, TEDA Applied Physics School, Nankai University, Tianjin 30047, China
author
  • The Key Lab of Advanced Technique and Fabrication, for Weak-Light Nonlinear Photonics Materials, Ministry of Education, TEDA Applied Physics School, Nankai University, Tianjin 30047, China
author
  • The Key Lab of Advanced Technique and Fabrication, for Weak-Light Nonlinear Photonics Materials, Ministry of Education, TEDA Applied Physics School, Nankai University, Tianjin 30047, China
author
  • The Key Lab of Advanced Technique and Fabrication, for Weak-Light Nonlinear Photonics Materials, Ministry of Education, TEDA Applied Physics School, Nankai University, Tianjin 30047, China
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv114n426kz
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