| 光谱学与光谱分析 |
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| Investigation of Synthesis and Luminescent Properties of the Sr2CeO4∶Dy3+ |
| WANG Li1,2, LI Jie1,2,3, WANG Hua1,2*, ZHOU He-feng1,2, ZHANG Shu-quan1,2, WANG Shu-hao1,2, XU Bing-she1,2 |
1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. Taiyuan University of Technology New Materials Engineering Research Center，Taiyuan 030024, China
3. College of Materials Science and Engineering, North University of China, Taiyuan 030051, China |
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Abstract In the present article, Sr2CeO4∶Dy3+ was synthesized with N,N-methylene bisacrylamide (MBAA) as the net agent. The structure, morphology and luminescent properties were also characterized. It is indicated that Sr2CeO4∶Dy3+ was single-phased without other phase existing and also had good dispersion The UV-visible absorption spectra suggested that the absorption bands were almost at 480 nm. The excitation spectrum for 270 nm emission has several excitation bands; The emission spectrum of Sr2CeO4∶Dy3+ shows two broad bands at 292 and 338 nm under the 370 nm excitation. The effects of Dy3+ doping concentration on the emission spectrum intensity of Sr2CeO4∶Dy3+ were also studied, the results showed that the ratio of yellow emission to blue emission increases with increasing the Dy3+ doping concentration, but with increasing the Dy3+ doping concentration, the emission intensity firstly increased, then decreased, and the maximal emission intensity was at 0.4mol% Dy3+ concentration.
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Received: 2012-03-06
Accepted: 2012-06-03
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Corresponding Authors:
WANG Hua
E-mail: wanghua001@tyut.edu.cn
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