A new approach to ZnCdSe quantum dots

B. P. Zhang, T. Yasuda, W. X. Wang, Y. Segawa, K. Edamatsu, T. Itoh, H. Yaguchi, K. Onabe

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We propose a new approach of fabricating ZnCdSe quantum dots (QDs) on ZnSe and GaAs (110) surfaces by simply depositing a ZnSe/ZnCdSe/ZnSe heterostructure. The growth conditions are selected to introduce surface roughness on the over grown ZnSe which allows the formation of ZnCdSe QDs. Optical studies unambiguously demonstrate the formation of QDs. Resolution-limited sharp emission lines are observed by micro-photoluminescences and the linewidths are much less than the thermal energy. As time goes on, intermittent behaviors of the QD emissions are observed. A proper selection of growth conditions is essential in obtaining ZnCdSe QDs by this method, especially on GaAs (110) surfaces.

Original languageEnglish
Pages (from-to)127-131
Number of pages5
JournalMaterials Science and Engineering B
Volume51
Issue number1-3
DOIs
Publication statusPublished - 1998 Feb 27

Keywords

  • Micro-photoluminescence
  • Quantum dot
  • ZnCdSe

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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