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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 3/2012

01.12.2012 | Original Paper

Upconversion luminescence of Er3+/Yb3+ co-doped nanolangasite synthesized by a modified Pechini route

verfasst von: Ana-Maria Voiculescu, Serban Georgescu, Silviu Nastase, Cristian Matei, Daniela Berger, Cristina Matei, Angela Stefan, Octavian Toma

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 3/2012

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Abstract

Nanopowders of langasite (La3Ga5SiO14) doped with 1 at.% Er3+ and 3 at.% Yb3+ were synthesized for the first time by a modified Pechini route and annealed in air at 700, 750, 800, 900, and 1,000 °C. The langasite powders were characterized by XRD, FTIR and luminescence techniques. Crystallization began at 750 °C and pure langasite phase was obtained for the samples annealed at 800 and 900 °C. Traces of LaGaO3 and Ga2O3 were observed in the sample annealed at 1,000 °C. Bright green and red luminescence was observed for pumping at 973 nm whose intensity increased with annealing temperature due to the removal of the adsorbed impurities and the improvement of crystallinity.
Vorheriger Artikel Partial crystallization in exotic phase stishovite of amorphous silica xerogels induced by incorporation of chlorophyll species
Nächster Artikel BaBi2Nb2O9 powder and their ceramics prepared by aqueous solution–gel method

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Metadaten
Titel
Upconversion luminescence of Er3+/Yb3+ co-doped nanolangasite synthesized by a modified Pechini route
verfasst von
Ana-Maria Voiculescu
Serban Georgescu
Silviu Nastase
Cristian Matei
Daniela Berger
Cristina Matei
Angela Stefan
Octavian Toma
Publikationsdatum
01.12.2012
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 3/2012
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-012-2900-x

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