Influence of resonant excitation and carrier lifetime on the optical properties of coupled CdSe quantum dots
- Authors
- Oh, Eunsoon; Choi, Dong Gi; Park, Jung Hyun; Lee, Tae Kyu; Lee, Sanghoon; Furdyna, J. K.
- Issue Date
- 7월-2008
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- carrier lifetime; optical properties; CdSe quantum dot; resonance
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.53, no.1, pp.106 - 109
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 53
- Number
- 1
- Start Page
- 106
- End Page
- 109
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/123285
- ISSN
- 0374-4884
- 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.
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