A systematic optical study, including micro, ensemble and time resolved photoluminescence of GaAs/AlGaAs triple concentric quantum rings, self-assembled via droplet epitaxy, is presented. Clear emission from localized states belonging to the ring structures is reported. The triple rings show a fast decay dynamics, around 40 ps, which is expected to be useful for ultrafast optical switching applications.
Abbarchi, M., Cavigli, L., Somaschini, C., Bietti, S., Gurioli, M., Vinattieri, A., et al. (2011). Micro-photoluminescence of GaAs/AlGaAs triple concentric quantum rings. NANOSCALE RESEARCH LETTERS, 6 [10.1186/1556-276X-6-569].
Micro-photoluminescence of GaAs/AlGaAs triple concentric quantum rings
SOMASCHINI, CLAUDIO;BIETTI, SERGIO;SANGUINETTI, STEFANO
2011
Abstract
A systematic optical study, including micro, ensemble and time resolved photoluminescence of GaAs/AlGaAs triple concentric quantum rings, self-assembled via droplet epitaxy, is presented. Clear emission from localized states belonging to the ring structures is reported. The triple rings show a fast decay dynamics, around 40 ps, which is expected to be useful for ultrafast optical switching applications.
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