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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