Superlattices and Microstructures volume 46, issue 1-2, P246-252 2009 DOI: 10.1016/j.spmi.2008.10.020 View full text
Roberto Guerra, Ivan Marri, Rita Magri, Layla Martin-Samos, Olivia Pulci, Elena Degoli, Stefano Ossicini

Abstract: Within a first-principles framework we show the dependence of the optical properties of silicon nanocrystallites embedded in a silica matrix on the crystalline vs. amorphous order of the system. Moreover we calculate how many-body effects modify the electronic and optical properties of the embedded silicon nanodots. A discussion about the different roles played by dimensionality, interface properties, disorder and excitonic effects on the electronic and optical properties of the confined nanostructures is pres…

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