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Bulk silica-based luminescent materials by sol-gel processing of non-conventional precursors
Rodríguez, J. A.; Fernández-Sánchez, C.; Domínguez, Carlos (Domínguez Horna); Hernández Márquez, Sergi; Berencén Ramírez, Yonder Antonio
Universitat de Barcelona
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.
Pel·lícules fines
Microelectrònica
Luminescència
Optoelectrònica
Thin films
Microelectronics
Luminescence
Optoelectronics
(c) American Institute of Physics , 2012
Artículo
info:eu-repo/semantics/publishedVersion
American Institute of Physics
         

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