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 language | English |
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Pages (from-to) | 614-618 |
Number of pages | 5 |
Journal | Journal of the Korean Physical Society |
Volume | 49 |
Issue number | 2 |
Publication status | Published - 2006 Aug |
Keywords
- Magnetic semiconductors
- Quantum dot
- Spin
- Time-resolved photoluminescence
ASJC Scopus subject areas
- Physics and Astronomy(all)