کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1229959 | 1495242 | 2014 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Efficient visible upconversion luminescence in Er3+ and Er3+/Yb3+ co-doped Y2O3 phosphors obtained by solution combustion reaction Efficient visible upconversion luminescence in Er3+ and Er3+/Yb3+ co-doped Y2O3 phosphors obtained by solution combustion reaction](/preview/png/1229959.png)
Combustion derived Er3+ -doped Y2O3 and Er3+/Yb3+co-doped Y2O3 powders have been characterized by X-ray diffraction, energy dispersive X-ray analysis, Fourier transform infrared spectroscopy and laser excited spectroscopy. Formation of Y2O3 phosphor was confirmed by X-ray diffraction and energy dispersive X-ray analysis. The vibrational properties of Y2O3 powder was studied by Fourier transform infrared spectroscopy. The luminescence spectra of Er3+ -doped and Er3+/Yb3+ co-doped Y2O3 powders were studied under 379 nm excitation. The strong up-conversion luminescence for Er3+ -doped and Er3+/Yb3+ co-doped Y2O3 powders have been observed under 978 nm laser excitation. The effect of Yb3+ addition on optical and luminescence properties of Er3+:Y2O3 powders were studied. The ratio of red to green intensity has been enhanced when Er3+ -doped Y2O3 is co-doped with Yb3+ ions. The effect of co-doping of Yb3+ ions on the visible luminescence intensity of Er3+ has been studied and the mechanism responsible for the variation in the green and red intensity is discussed.
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Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 126, 21 May 2014, Pages 306–311