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Nano-Micro Letters

, Volume 1, Issue 1, pp 1–3

First Online: 15 October 2009Received: 16 August 2009Accepted: 31 August 2009


We studied the multilayering effects of InGaAs quantum dots QDs on GaAs731, a surface lying inside of the stereographic triangle. The surfaces after stacking 16 InGaAs layers were characterized with highly non-uniformity of QD spatial distribution. The bunched step regions driven by strain accumulation are decorated by QDs, therefore GaAs731 becomes a good candidate substrate for the growth of QD clusters. The unique optical properties of the QD clusters are revealed by photoluminescence measurements. By adjusting the coverage of InGaAs, a bamboo-like nanostructured surface was observed and the quantum dots aligned up in clusters to separate the -bamboo- into sections.

KeywordsQuantum dots MBE High index surfaces Nanostructures Atomic force microscopy  Download to read the full article text

Autor: Y. Z. Xie - V. P. Kunets - Z. M. Wang - V. Dorogan - Y. I. Mazur - J. Wu - G. J. Salamo


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