Micro-photoluminescence of GaAs/AlGaAs triple concentric quantum rings

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...

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Detalles Bibliográficos
Autores principales: Abbarchi, Marco, Cavigli, Lucia, Somaschini, Claudio, Bietti, Sergio, Gurioli, Massimo, Vinattieri, Anna, Sanguinetti, Stefano
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2011
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3226682/
https://www.ncbi.nlm.nih.gov/pubmed/22039893
http://dx.doi.org/10.1186/1556-276X-6-569
Descripción
Sumario: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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