Synthesis and Photoluminescence of Tetravalent Cerium-Doped Alkaline-Earth-Metal Tungstate Phosphors by a Co-precipitation Method

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	Synthesis and Photoluminescence of Tetravalent Cerium-Doped Alkaline-Earth-Metal Tungstate Phosphors by a Co-precipitation Method
	W. L.; Tao Feng, C. Y.; Wang, K.
	2014
发表期刊	Spectroscopy Letters
ISSN	0038-7010
卷号	48 期号:5 页码:381-385
摘要	A series of tetravalent cerium ion-doped alkaline-earth-metal tungstate phosphors were prepared by a co-precipitation method with a mixture of ammonium bicarbonate and aqueous ammonia as the precipitating agent. X-ray diffraction, scanning electron microscopy, and photoluminescence were used to characterize the structure, morphology, and luminescent properties of the phosphors. The synthesized cerium-doped tungstate phosphors have a scheelite structure with a pure phase. The scanning electron microscope images show that the grain sizes are in the range from 1.0 to 3.0 mu m. Photoluminescence spectra indicate blue emission around 440 nm and the optimized concentrations of tetravalent cerium were 3.0, 2.0, and 3.0 in calcium tungstate, strontium tungstate, and barium tungstate for the highest emission intensities at 365 nm excitation. The Commission Internationale De L'E'clairage chromaticity coordinates of cerium-doped tungstate phosphors, that is, x = 0.14, y = 0.14, exhibit pure blue emission and the synthesized phosphors are promising materials for visual display and solid-state lighting applications.
部门归属	[feng, wen-lin ; tao, chuan-yi ; wang, ke] chongqing univ technol, dept appl phys, chongqing 400054, peoples r china. [feng, wen-lin] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. ; feng, wl (reprint author), chongqing univ technol, dept appl phys, chongqing 400054, peoples r china. ; wenlinfeng@126.com
关键词	Alkaline Earth Oxides Fluorescence Optical Spectrum Phosphors Sr2ceo4 Blue Phosphor Luminescence Properties Activated Cawo4 Red Phosphors Eu3++ Radiation Mo
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73799
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. L.,Tao Feng, C. Y.,Wang, K.. Synthesis and Photoluminescence of Tetravalent Cerium-Doped Alkaline-Earth-Metal Tungstate Phosphors by a Co-precipitation Method[J]. Spectroscopy Letters,2014,48(5):381-385.
APA	W. L.,Tao Feng, C. Y.,&Wang, K..(2014).Synthesis and Photoluminescence of Tetravalent Cerium-Doped Alkaline-Earth-Metal Tungstate Phosphors by a Co-precipitation Method.Spectroscopy Letters,48(5),381-385.
MLA	W. L.,et al."Synthesis and Photoluminescence of Tetravalent Cerium-Doped Alkaline-Earth-Metal Tungstate Phosphors by a Co-precipitation Method".Spectroscopy Letters 48.5(2014):381-385.