Nano Archive

Self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates

Strom, N. W. and Wang, Zh. M. and Lee, J. H. and AbuWaar, Z. Y. and Mazur, Yu. I. and Salamo, G. J. (2007) Self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates. NANOSCALE RESEARCH LETTERS, 2 (2). pp. 112-117.

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Official URL: http://www.springerlink.com/content/142120656h0g03...

Abstract

The evolution of InAs quantum dot (QD) formation is studied on GaAs ring-like nanostructures fabricated by droplet homo-epitaxy. This growth mode, exclusively performed by a hybrid approach of droplet homo-epitaxy and Stransky-Krastanor (S-K) based QD self-assembly, enables one to form new QD morphologies that may find use in optoelectronic applications. Increased deposition of InAs on the GaAs ring first produced a QD in the hole followed by QDs around the GaAs ring and on the GaAs (100) surface. This behavior indicates that the QDs prefer to nucleate at locations of high monolayer (ML) step density.

Item Type:Article
Uncontrolled Keywords:GaAs/GaAs droplet homo-epitaxy; InAs quantum dots; molecular beam epitaxy; self-assembly
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
ID Code:6273
Deposited By:IoN
Deposited On:21 Sep 2009 11:52
Last Modified:21 Sep 2009 11:52

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