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Findings from Zhejiang Normal University Yields New Data on Nanocrystals (Enhanced upconversion in Ho3+-doped transparent glass ceramics containing...

July 11, 2014



Findings from Zhejiang Normal University Yields New Data on Nanocrystals (Enhanced upconversion in Ho3+-doped transparent glass ceramics containing BaYbF5 nanocrystals)

By a News Reporter-Staff News Editor at Science Letter -- A new study on Nanocrystals is now available. According to news reporting originating in Zhejiang, People's Republic of China, by NewsRx journalists, research stated, "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)."

The news reporters obtained a quote from the research from Zhejiang Normal University, "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 440-460 nm is dearly identified by measuring spectra from thermally coupled luminescent levels at various temperatures."

According to the news reporters, the research concluded: "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."

For more information on this research see: Enhanced upconversion in Ho3+-doped transparent glass ceramics containing BaYbF5 nanocrystals. Journal of Luminescence, 2014;152():195-198. Journal of Luminescence can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Luminescence - www.elsevier.com/wps/product/cws_home/505700)

Our news correspondents report that additional information may be obtained by contacting S. Jiang, Zhejiang Normal University, Dept. of Phys, Jinhua 321004, Zhejiang, People's Republic of China. Additional authors for this research include H. Guo, X.T. Wei, C.K. Duan and M. Yin (see also Nanocrystals).

Keywords for this news article include: Asia, Zhejiang, Nanotechnology, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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