In this paper, we report the first successful preparation of calcium fluoride by miniemulsion. Calcium fluoride is a widely investigated material known to be an excellent host for luminescent lanthanide ions; herein we report an easy and reproducible way to achieve the controlled doping of CaF2 nanostructures (Ca : Ln = 50 : 1, with Ln = Sm-III, Gd-III and Tb-III) at room temperature, through the miniemulsion approach. The materials are thoroughly characterized from a structural, morphological and functional point of view, by the combined use of several techniques, i.e. X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Scanning and Transmission Electron Microscopy (SEM and TEM respectively) and photoluminescence (PL) spectroscopy. In addition, to get further insight into the local structure around the dopants, Extended X-ray Absorption Fine Structure (EXAFS) experiments are performed
Room temperature crystallization of highly luminescent lanthanide-doped CaF2 in nanosized droplets: First example of the synthesis of metal halogenide in miniemulsion with effective doping and size control / Dolcet, P; Mambrini, A; Pedroni, M; Speghini, A; Gialanella, Stefano; Casarin, M; Gross, S.. - In: RSC ADVANCES. - ISSN 2046-2069. - 2015, 5:21(2015), pp. 16302-16310. [10.1039/c4ra12006j]
Room temperature crystallization of highly luminescent lanthanide-doped CaF2 in nanosized droplets: First example of the synthesis of metal halogenide in miniemulsion with effective doping and size control
Gialanella, Stefano;
2015-01-01
Abstract
In this paper, we report the first successful preparation of calcium fluoride by miniemulsion. Calcium fluoride is a widely investigated material known to be an excellent host for luminescent lanthanide ions; herein we report an easy and reproducible way to achieve the controlled doping of CaF2 nanostructures (Ca : Ln = 50 : 1, with Ln = Sm-III, Gd-III and Tb-III) at room temperature, through the miniemulsion approach. The materials are thoroughly characterized from a structural, morphological and functional point of view, by the combined use of several techniques, i.e. X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Scanning and Transmission Electron Microscopy (SEM and TEM respectively) and photoluminescence (PL) spectroscopy. In addition, to get further insight into the local structure around the dopants, Extended X-ray Absorption Fine Structure (EXAFS) experiments are performedFile | Dimensione | Formato | |
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2015_Room temperature crystallization_RSCAdv_5_16302_16310.pdf
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