Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures

Eunsoon Oh, D. G. Choi, Shin Kim, T. K. Lee, J. H. Park, S. Lee, J. K. Furdyna

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We studied the time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnSe and CdSe/CdMnSe) and the PL decay as functions of the magnetic field and the temperature. In the CdSe/CdMnSe system, the PL decay of the σ + component exhibited biexponential behavior under external fields, which indicated that a fraction of the CdSe QDs were not coupled to the CdMnSe QDs. The PL lifetimes of these structures were found to be more significantly affected by non-radiative recombination, rather than by the vertical coupling between the QDs.

Original languageEnglish
Pages (from-to)614-618
Number of pages5
JournalJournal of the Korean Physical Society
Volume49
Issue number2
Publication statusPublished - 2006 Aug

Keywords

  • Magnetic semiconductors
  • Quantum dot
  • Spin
  • Time-resolved photoluminescence

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Oh, E., Choi, D. G., Kim, S., Lee, T. K., Park, J. H., Lee, S., & Furdyna, J. K. (2006). Time-resolved photoluminescence in CdSe/CdZnSe and CdSe/CdMnSe coupled quantum dot structures. Journal of the Korean Physical Society, 49(2), 614-618.