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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
Source PublicationSpectroscopy Letters
ISSN0038-7010
Volume48Issue:5Pages:381-385
AbstractA 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.
description.department[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
KeywordAlkaline Earth Oxides Fluorescence Optical Spectrum Phosphors Sr2ceo4 Blue Phosphor Luminescence Properties Activated Cawo4 Red Phosphors Eu3++ Radiation Mo
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73799
Collection中国科学院金属研究所
Recommended Citation
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.
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