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Template-free synthesis and luminescent properties of hollow Ln:YOF (Ln = Eu or Er + Yb) microspheres

Opened Access Template-free synthesis and luminescent properties of hollow Ln:YOF (Ln = Eu or Er + Yb) microspheres

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Autor: Ocaña Jurado, Manuel
Martínez Castro, E
García Sevillano, Jorge
Cussó, Fernando
Departamento: Universidad de Sevilla. Departamento de Química Inorgánica
Fecha: 2015
Publicado en: Journal of Alloys and Compounds, 619, 44-51.
Tipo de documento: Artículo
Resumen: A method for the synthesis of hollow lanthanide doped yttrium oxyfluoride (YOF) spheres in the micrometer size range with cubic structure based on the pyrolysis at 600 °C of liquid aerosols generated from aqueous solutions containing the corresponding rare earth chlorides and trifluoroacetic acid has been developed. This procedure, which has been used for the first time for the synthesis of YFO based materials, is simpler and advantageous when compared with other methods usually employed for the production of hollow spheres since it does not require the use of sacrificial templates. In addition, it is continuous, which is desirable because of practical reasons. The procedure is also suitable for doping the YOF spheres with europium cations resulting in down converting red phosphors when activated with UV light, or for co-doping with both Er3+and Yb3+giving rise to up-converting phosphors, which emit intense red light under near infrared (NIR) irradiation. Because of their optical prop...
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Cita: Ocaña Jurado, M., Martínez Castro, E., García Sevillano, J. y Cussó, F. (2015). Template-free synthesis and luminescent properties of hollow Ln:YOF (Ln = Eu or Er + Yb) microspheres. Journal of Alloys and Compounds, 619, 44-51.
Tamaño: 842.2Kb
Formato: PDF

URI: https://hdl.handle.net/11441/73031

DOI: 10.1016/j.jallcom.2014.09.023

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