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Title

80SiO2-20LaF3 oxyfluoride glass ceramic coatings doped with Nd3+ for optical applications

AuthorsGorni, Giulio; Balda, Rolindes ; Fernández, Joaquín ; Velázquez, J. J.; Pascual, Laura; Mosa, Jadra; Durán, Alicia ; Castro Martín, Yolanda
KeywordsSol-gel
Glass manufacturing
Glass ceramics
Coatings
Photoluminesence
Oxyfluoride
Optical properties
Issue Date2018
PublisherAmerican Ceramic Society
John Wiley & Sons
CitationInternational Journal of Applied Glass Science 9(2): 208-217 (2018)
AbstractTransparent glass ceramic (GC) films and self-supported layers of composition 80SiO-20LaF doped with Nd were prepared by sol-gel method for the first time. GC films were deposited by dip coating on different substrates and heat-treated between 350°C and 850°C for 1, 3, and 80 hours. The structural analysis of thin films was performed by GI-XRD and HR-TEM to check the LaF nanocrystals precipitation in the SiO matrix, revealing a crystal size lower than 5 nm. The emission and excitation spectra and lifetimes of the films have been obtained for different thermal treatments and Nd contents. The luminescence intensity of the F →I laser transition increases with the treatment temperature and Nd content, whereas a reduction for the luminescence lifetime is observed compared to those observed in bulk samples prepared by melting quenching.
Publisher version (URL)https://doi.org/10.1111/ijag.12338
URIhttp://hdl.handle.net/10261/177431
Identifiersdoi: 10.1111/ijag.12338
e-issn: 2041-1294
issn: 2041-1286
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