Archivio Istituzionale della RicercaArtificial opals, consisting of silica nanospheres ordered into a fcc lattices, were grown with good control of the orientation and sphere size. Such structures were impregnated by amorphous silicon and successively inverted by template removal in order to obtain photonic crystals with high refractive index contrast. The analysis of the photonic bandgap was carried out by means of reflectance and photoluminescence spectra, corroborated by calculations of photonic bands as well as reflection spectra performed by a scattering matrix method.
Synthesis, characterization and modelling of silicon based opals / Pallavidino, L; Razo, Ds; Geobaldo, Francesco; Balestreri, A; Bajoni, D; Galli, M; Andreani, Lc; Ricciardi, Carlo; Celasco, Edvige; Quaglio, Marzia; Giorgis, Fabrizio. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - 352 (9-20):(2006), pp. 1425-1429. (Intervento presentato al convegno 21st International Conference on Amorphous and Nanocrystalline Semiconductors tenutosi a Lisbon (PRT) nel 4-9 Sep. 2005) [10.1016/j.jnoncrysol.2005.10.047].
Synthesis, characterization and modelling of silicon based opals
GEOBALDO, FRANCESCO;RICCIARDI, Carlo;CELASCO, EDVIGE;QUAGLIO, MARZIA;GIORGIS, FABRIZIO
2006
Abstract
Artificial opals, consisting of silica nanospheres ordered into a fcc lattices, were grown with good control of the orientation and sphere size. Such structures were impregnated by amorphous silicon and successively inverted by template removal in order to obtain photonic crystals with high refractive index contrast. The analysis of the photonic bandgap was carried out by means of reflectance and photoluminescence spectra, corroborated by calculations of photonic bands as well as reflection spectra performed by a scattering matrix method.
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https://hdl.handle.net/11583/1539257
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