کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1333997 | 979127 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Microstructure and luminescence of transparent glass ceramic containing Er3+:BaF2 nano-crystals Microstructure and luminescence of transparent glass ceramic containing Er3+:BaF2 nano-crystals](/preview/png/1333997.png)
Transparent BaF2–SiO2 glass ceramics doped with different content of Er3+ were prepared by sol–gel method. The microstructural evolution of the samples was studied with X-ray diffraction (XRD), transmission electron microscope (TEM), absorption and infrared spectra (IR). BaF2 nano-crystals with 2–15 nm in size, depending on the crystallization temperature, distributed homogeneously among the amorphous silica matrix. The BaF2 lattice parameters decreased with the increasing of Er3+ doping, indicating the incorporation of Er3+ into nano-crystals, which was further confirmed by energy dispersive X-ray spectroscopy (EDS) and absorption spectra analysis. The upconversion emissions of Er3+ emerged under the excitation at 980 nm for glass ceramic heat-treated at 800 °C.
Transparent glass ceramics containing BaF2 nano-crystals doped with Er3+ were prepared by sol–gel route. The upconversion emissions emerged when the sample was heat-treated at 800 °C. Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 179, Issue 2, February 2006, Pages 532–537