Abstract
Sol–gel derived glass–ceramics containing CeF3 nanocrystals have been developed for the first time, to the best of our knowledge, by adequate heat treatments of precursor bulk glasses with composition 95SiO2–5CeF3 doped with 0.1 Eu3+ or 0.1 Sm3+ and co-doped with 0.3 Yb3+ and 0.1 Er3+ ions (in mol%). X-Ray Diffraction and High Resolution Transmission Electron Microscopy confirm the precipitation of CeF3 nanocrystals. Moreover, this structural analysis is completed using Eu3+ and Sm3+ as probe ions of the different local environments for rare-earth ions in the nano-structured glass–ceramics. Luminescence measurements led us to discern the final environments for the ions, revealing the partition of a large fraction of these ions into like-crystalline environment of the precipitated CeF3 nanocrystals. Near infrared emission at 1.5 μm was observed after excitation at 980 nm in Yb3+–Er3+ co-doped samples for potential applications in telecommunications.
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Acknowledgments
The authors would like to thank Ministerio de Ciencia e Innovación (MAT2009-12079) and Gobierno Autónomo de Canarias: Agencia Canaria de Investigación, Innovación y Sociedad de la Información (SolSubC200801000286 and FPI grant PI97718301).
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del Castillo, J., Yanes, A.C., Méndez-Ramos, J. et al. Structural and luminescent study in lanthanide doped sol–gel glass–ceramics comprising CeF3 nanocrystals. J Sol-Gel Sci Technol 60, 170–176 (2011). https://doi.org/10.1007/s10971-011-2576-7
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DOI: https://doi.org/10.1007/s10971-011-2576-7