Within a first-principles framework we show the dependenceof the optical properties of silicon nanocrystallites embeddedin a silica matrix on the crystalline vs. amorphous order ofthe system. Moreover we calculate how many-body effectsmodify the electronic and optical properties of the embeddedsilicon nanodots. A discussion about the different roles playedby dimensionality, interface properties, disorder and excitoniceffects on the electronic and optical properties of the confinednanostructures is presented.
Optical properties of silicon nanocrystallites in SiO2 matrix:Crystalline vs. amorphous case / Guerra, Roberto; Marri, Ivan; Magri, Rita; L., Martin Samos; O., Pulci; Degoli, Elena; Ossicini, Stefano. - In: SUPERLATTICES AND MICROSTRUCTURES. - ISSN 0749-6036. - STAMPA. - 46:1-2(2009), pp. 246-252. [10.1016/j.spmi.2008.10.020]
Optical properties of silicon nanocrystallites in SiO2 matrix:Crystalline vs. amorphous case
GUERRA, Roberto;MARRI, Ivan;MAGRI, Rita;DEGOLI, Elena;OSSICINI, Stefano
2009
Abstract
Within a first-principles framework we show the dependenceof the optical properties of silicon nanocrystallites embeddedin a silica matrix on the crystalline vs. amorphous order ofthe system. Moreover we calculate how many-body effectsmodify the electronic and optical properties of the embeddedsilicon nanodots. A discussion about the different roles playedby dimensionality, interface properties, disorder and excitoniceffects on the electronic and optical properties of the confinednanostructures is presented.
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