Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots

Eunsoon Oh, Dong Gi Choi, Jung Hyun Park, Tae Kyu Lee, Sanghoon Lee, J. K. Furdyna

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We studied the time-integrated and time-resolved photoluminescence (PL) from coupled quantum dot (QD) systems (CdSe/CdZnMnSe and CdSe/CdMnSe), which exhibited an antiferromagnetic interaction between the QDs in adjacent layers. We observed a peculiar PL peak shift with an excitation wavelength close to the bandgap of the CdSe QDs, which was attributed to a resonant excitation condition. We found that the PL lifetimes of these structures were significantly influenced by non-radiative recombination processes and that the temperature dependence of the PL intensity was strongly correlated with the PL lifetime.

Original languageEnglish
Pages (from-to)106-109
Number of pages4
JournalJournal of the Korean Physical Society
Volume53
Issue number1
DOIs
Publication statusPublished - 2008 Jul

Keywords

  • Carrier lifetime
  • CdSe quantum dot
  • Optical properties
  • Resonance

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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