| Investigation of thermoluminescence in Li_2B_4O_7 phosphors doped with Cu, Ag and Mg |
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| 引用本文： | XIONG ZhengYe1,2,TANG Qiang2 & ZHANG ChunXiang2 1 College of Science,Guangdong Ocean University,Zhanjiang 524088,China, 2 School of Physics Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China. Investigation of thermoluminescence in Li_2B_4O_7 phosphors doped with Cu, Ag and Mg[J]. 中国科学G辑(英文版), 2007, 50(3) |
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| 作者姓名： | XIONG ZhengYe1 2 TANG Qiang2 & ZHANG ChunXiang2 1 College of Science Guangdong Ocean University Zhanjiang 524088 China 2 School of Physics Science and Engineering Sun Yat-sen University Guangzhou 510275 China |
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| 作者单位： | XIONG ZhengYe1，2，TANG Qiang2 & ZHANG ChunXiang2 1 College of Science，Guangdong Ocean University，Zhanjiang 524088，China; 2 School of Physics Science and Engineering，Sun Yat-sen University，Guangzhou 510275，China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (Grant No. 10505033)，the Natural Science Foundation of Guangdong Province of China (Grant No. 04009733)，the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20020558015) |
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| 摘 要： | Li_2B_4O_7 (LBO):Cu,Ag,Mg phosphors have been prepared by the sintering technique. The roles of the Ag and Mg dopants in the phosphors have been studied using the methods of thermoluminescence (TL) glow curves and TL 3D spectra. The results indicated that proper concentrations of Ag and Mg can enhance the TL of LBO:Cu. It was also indicated that the intensity of TL peak at ~130℃ is reduced with the in- creasing Ag concentration, and enhanced with the increasing Mg concentration. From the TL 3D spectra, three emission bands (λ1 = 421 nm, λ2 = 380 nm, λ3 = 350 nm) were observed: the intensity of low energy emission band is reduced and that of the high energy is enhanced with the increasing dopant Ag; on the contrary, the intensity of low energy emission band is enhanced and that of the high energy one is reduced with the increasing dopant Mg.
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Investigation of thermoluminescence in Li_2B_4O_7 phosphors doped with Cu, Ag and Mg |
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| XIONG ZhengYe,TANG Qiang,ZHANG ChunXiang. Investigation of thermoluminescence in Li_2B_4O_7 phosphors doped with Cu, Ag and Mg[J]. Science in China(Physics Astronomy), 2007, 50(3) |
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| Authors: | XIONG ZhengYe TANG Qiang ZHANG ChunXiang |
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| Affiliation: | 1. College of Science, Guangdong Ocean University, Zhanjiang 524088, China;School of Physics Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
2. School of Physics Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China |
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| Abstract: | Li2B4O7 (LBO):Cu,Ag,Mg phosphors have been prepared by the sintering technique.The roles of the Ag and Mg dopants in the phosphors have been studied using the methods of thermoluminescence (TL) glow curves and TL 3D spectra. The results indicated that proper concentrations of Ag and Mg can enhance the TL of LBO:Cu.It was also indicated that the intensity of TL peak at ～130℃ is reduced with the increasing Ag concentration, and enhanced with the increasing Mg concentration.From the TL 3D spectra, three emission bands (λ1 = 421 nm,λ2 = 380 nm, λ3 = 350nm) were observed: the intensity of low energy emission band is reduced and that of the high energy is enhanced with the increasing dopant Ag; on the contrary, the intensity of low energy emission band is enhanced and that of the high energy one is reduced with the increasing dopant Mg. |
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| Keywords: | thermoluminescence spectra borate lithium |
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