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Title: Bulk silica-based luminescent materials by sol-gel processing of non-conventional precursors
Author: Rodríguez, J. A.
Fernández-Sánchez, C.
Domínguez, Carlos (Domínguez Horna)
Hernández Márquez, Sergi
Berencén Ramírez, Yonder Antonio
Keywords: Pel·lícules fines
Thin films
Issue Date: 25-Oct-2012
Publisher: American Institute of Physics
Abstract: The sol-gel synthesis of bulk silica-based luminescent materials using innocuous hexaethoxydisilane and hexamethoxydisilane monomers, followed by one hour thermal annealing in an inert atmosphere at 950oC-1150oC, is reported. As-synthesized hexamethoxydisilane-derived samples exhibit an intense blue photoluminescence band, whereas thermally treated ones emit stronger photoluminescence radiation peaking below 600 nm. For hexaethoxydisilane-based material, annealed at or above 1000oC, a less intense photoluminescence band, peaking between 780 nm and 850 nm that is attributed to nanocrystalline silicon is observed. Mixtures of both precursors lead to composed spectra, thus envisaging the possibility of obtaining pre-designed spectral behaviors by varying the mixture composition.
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It is part of: Applied Physics Letters, 2012, vol. 101, p. 171908-1-171908-4
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ISSN: 0003-6951
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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