Synthesis and luminescence properties of Sr3-z（AlxSi1-x）O5-xFx：zCe^3＋phosphors

Sr3-z（AlxSi1-x）O5-xFx：zCe^3＋ phosphors were synthesized by high-temperature solid-state reaction. The structure and lumi- nescence properties of phosphors with various A1/Si ratios and Ce3＋ concentrations were characterized using various methods such as X-ray diffraction, photoluminescence excitatio...

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Published in中国稀土学报：英文版 Vol. 31; no. 7; pp. 665 - 668
Main Author 马小乐 庄卫东 郭汉杰 刘荣辉 刘元红 何华强 彭鹏 陈磊
Format Journal Article
LanguageEnglish
Published 2013
Subjects
交易所
光致发光光谱
发光性质
合成
商品
荧光粉
郑州
高温固相反应
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Summary:Sr3-z（AlxSi1-x）O5-xFx：zCe^3＋ phosphors were synthesized by high-temperature solid-state reaction. The structure and lumi- nescence properties of phosphors with various A1/Si ratios and Ce3＋ concentrations were characterized using various methods such as X-ray diffraction, photoluminescence excitation and photoluminescence spectra. XRD result displayed that a complete solid solution between Sr3AlO4F and Sr3SiO5 was formed. With the increasing ofx value, a broader excitation band and stronger absorption appeared in the blue light region. Moreover, the emission band shifted to a shorter wavelength and the emission intensity reached a maximum at x=0.6. By adjusting the concentration of Ce3＋, a widely tunable range of emission wavelength under the excitation of 460 um was obtained from the green to yellow regions. In addition, the concentration and thermal quenching were also discussed.
Bibliography:luminescence; solid solution; thermal quenching; concentration quenching; rare earths
11-2788/TF
MA Xiaole , ZHUANG Weidong , GUO Hanjie , LIU Ronghui, LIU Yuanhong , HE Huaqiang , PENG Peng , CHEN Lei （1. National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, and Grirem Advanced Materials Co Ltd., Beijing 100088, China; 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China）
Sr3-z（AlxSi1-x）O5-xFx：zCe^3＋ phosphors were synthesized by high-temperature solid-state reaction. The structure and lumi- nescence properties of phosphors with various A1/Si ratios and Ce3＋ concentrations were characterized using various methods such as X-ray diffraction, photoluminescence excitation and photoluminescence spectra. XRD result displayed that a complete solid solution between Sr3AlO4F and Sr3SiO5 was formed. With the increasing ofx value, a broader excitation band and stronger absorption appeared in the blue light region. Moreover, the emission band shifted to a shorter wavelength and the emission intensity reached a maximum at x=0.6. By adjusting the concentration of Ce3＋, a widely tunable range of emission wavelength under the excitation of 460 um was obtained from the green to yellow regions. In addition, the concentration and thermal quenching were also discussed.
ISSN:1002-0721
2509-4963