Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4852736
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Funding
- Polish Ministry of Science and Higher Education/the National Science Center [N N515 496640, 2011/01/B/ST3/02379, 2011/02/A/ST3/00152]
- Polish Ministry of Science and Higher Education [6167/IA/119/2012]
- Deutsche Forschungsgemeinschaft
- Foundation for Polish Science within the Copernicus Award
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Exciton and biexciton dynamics in a single self-assembled InAs/In0.53Ga0.23Al0.24As/InP(001) quantum dash emitting near 1.55 mu m has been investigated by micro-photoluminescence and time-resolved micro-photoluminescence at T = 4.2 K. The exciton and biexciton fine structure splitting of similar to 60 mu eV, the biexciton binding energy of similar to 3.5 meV, and the characteristic exciton and biexciton decay times of 2.0 +/- 0.1 ns and 1.1 +/- 0.1 ns, respectively, have been determined. The measurement of the biexciton and exciton cross-correlation statistics of the photon emission confirmed the cascaded relaxation process. The exciton-to-biexciton decay time ratio and a small fine structure splitting suggest carrier localization within the investigated quantum dash. (C) 2013 AIP Publishing LLC.
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