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1篇 您的检索式：作者名="Zaifa Yang"

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		题名	作者	年代	出处	被引量
	1	Luminescence properties of Y2WO6:Yb^3+/Er^3+ with enhanced redemission via upconversion显示文摘The Er^(3+)/Yb^(3+) co-doped Y2 WO6 phosphors were prepared via high temperature solid method for the first time. The structure was investigated with X-ray diffraction(XRD). The crystal morphology was observed through scanning electron microscopy(SEM). Under the excitation of 980 nm diode laser,visible up-conversion(UC) emissions were observed in green and red regions. The luminescence study reveals strong ~4 S_(3/2) to ~4 I_(15/2) transition at 545 nm and strong ~4 F_(9/2) to ~4 I_(15/2) transition at 657 nm. The relative intensities ratios of red(510-580 nm) to green(640-690 nm) emissions(R_(R/G)) reduce when the samples co-doped with Yb^(3+) ions. The dependence of emission intensity on the pump power indicate that visible UC emissions are governed by two photons, meanwhile three photons process is also involved. For more details, the discussion is made in the energy level diagrams.	Xuedong Gao Denghui Xu Jiangnan Du Zaifa Yang Jiayue Sun	2017	Journal of Rare Earths2017，35，11：	0

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