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2012-10-25

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/32748

Bulk silica-based luminescent materials by sol-gel processing of non-conventional precursors

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http://dx.doi.org/171908-1-171908-4

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.

Subject

Pel·lícules fines, Microelectrònica, Luminescència, Optoelectrònica

Subject (English)

Thin films, Microelectronics, Luminescence, Optoelectronics

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Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

Citation

RODRÍGUEZ, J. A., et al. Bulk silica-based luminescent materials by sol-gel processing of non-conventional precursors. Applied Physics Letters. 2012. Vol. 101, num. 171908-1-171908-4. ISSN 0003-6951. [consulted: 8 of August of 2026]. Available at: https://hdl.handle.net/2445/32748

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