Abbarchi Marco, Cavigli Lucia, Somaschini Claudio, Bietti Sergio, Gurioli Massimo, Vinattieri Anna, Sanguinetti Stefano
L,E,N,S, and Dipartimento di Fisica, Universitá di Firenze, Via Sansone 1, I-50019, Sesto Fiorentino, Italy.
Nanoscale Res Lett. 2011 Oct 31;6(1):569. doi: 10.1186/1556-276X-6-569.
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.
本文展示了一项系统的光学研究，包括通过液滴外延自组装的GaAs/AlGaAs三重同心量子环的微观、整体和时间分辨光致发光。报道了来自属于环形结构的局域态的清晰发射。三重环显示出约40皮秒的快速衰减动力学，这有望用于超快光开关应用。
