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 presented.
Optical properties of silicon nanocrystallites in SiO2 matrix: Crystalline vs. amorphous case / Guerra, Roberto; Marri, Ivan; Magri, Rita; Martin-Samos, Layla; Pulci, Olivia; Degoli, Elena; Ossicini, Stefano. - In: SUPERLATTICES AND MICROSTRUCTURES. - ISSN 0749-6036. - 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;
2009-01-01
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 presented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
