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Proceedings Paper

Self-assembled SiGe dots
Author(s): Jean-Marc Baribeau; Nelson L. Rowell; David J. Lockwood
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Paper Abstract

We review recent progress in the growth and characterization of Si1-xGex islands and Ge dots on (001) Si. We discuss the evolution of the island morphology with Si1-xGex coverage, and the effect of growth parameters or post-growth annealing on the shape of the islands and dots. We outline some of the structural, and optical properties of Si1-xGex islands and review recent progress in the determination of their composition and strain distribution. We describe the use of undulated Si1-xGex islands superlattices for infrared detection at telecommunication wavelengths. We discuss various approaches currently being investigated to engineer Si1-xGex quantum dots and in particular control their size, density and spatial distribution. For example, we show how C pre-deposition on Si (001) can influence nucleation and growth of Ge islands. We also show how low temperature Si homoepitaxy can lead to a particular surface cusp morphology that may promote dot nucleation.

Paper Details

Date Published: 25 March 2005
PDF: 17 pages
Proc. SPIE 5732, Quantum Sensing and Nanophotonic Devices II, (25 March 2005); doi: 10.1117/12.573063
Show Author Affiliations
Jean-Marc Baribeau, National Research Council Canada (Canada)
Nelson L. Rowell, National Research Council Canada (Canada)
David J. Lockwood, National Research Council Canada (Canada)

Published in SPIE Proceedings Vol. 5732:
Quantum Sensing and Nanophotonic Devices II
Manijeh Razeghi; Gail J. Brown, Editor(s)

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