کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399578 | 1505908 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced upconversion in Ho3+-doped transparent glass ceramics containing BaYbF5 nanocrystals
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Novel Ho3+-doped transparent oxyfluoride SiO2-Al2O3-Na2CO3-CaO-BaF2-YbF3 glass ceramics (GC) containing BaYbF5 nanocrystals were fabricated via melt-quenching technique with subsequent heat treatment. The formation of crystalline fluoride phase was confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Compared to precursor glasses, the greatly enhanced green emission (40-fold), new emission band at ultraviolet-blue region and stark splittings of emission in GC, indicate that Ho3+ enters into BaYbF5 nanocrystals with low phonon energy. Besides, the origin of the previously unconfirmed emission band at 440-460Â nm is clearly identified by measuring spectra from thermally coupled luminescent levels at various temperatures. The outstanding upconversion properties of Ho3+ in GC may present potential application in all-solid-state upconversion lasers operating in the visible and ultraviolet range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 152, August 2014, Pages 195-198
Journal: Journal of Luminescence - Volume 152, August 2014, Pages 195-198
نویسندگان
Sha Jiang, Hai Guo, Xiantao Wei, Changkui Duan, Min Yin,