| Er3+:Yb3+共掺杂氟氧混合物玻璃的上转换发光研究 |
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| 引用本文： | 阳效良,刘政威,肖思国.Er3+:Yb3+共掺杂氟氧混合物玻璃的上转换发光研究[J].光谱学与光谱分析,2002,22(3):357-359. |
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| 作者姓名： | 阳效良 刘政威 肖思国 |
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| 作者单位： | 湘潭大学物理系,湖南,湘潭,411105 |
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| 基金项目： | 湖南省教委重点项目资助 |
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| 摘 要： | 制备了化学配方为 (5 0 -x)GeO2 ·PbF2 ·WO3·(6 +x)CdF2 ·1 4Yb2 O3·0 6Er2 O3(x =10 ,2 0 ,30 )氟氧混合物玻璃。研究了 930nm发光二极管激发下Er3+ :Yb3+ 共掺杂情形下的Er3+ 离子的上转换发光特性 ,观测到了Er3+ 离子中心波长位于 5 4 3,5 5 0和 6 5 5nm处的三个强荧光发射带。通过对样品的反斯托克斯喇曼光谱的测量 ,确定了基质的最大声子能量 ,在此基础上分析了上转换荧光的产生机制。利用基质的平均电负性差和平均阳离子场强这两个参数 ,讨论了基质材料中GeO2 和CdF2 含量的调整对上转换发光的影响。
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| 关 键 词： | 共掺杂 上转换发光 能量上转换 氟氧混合物玻璃 稀土离子 铒 镱 |
| 文章编号： | 1000-0593(2002)03-0357-03 |
| 修稿时间： | 2000年11月28 |
The Study of Up-conversion Fluorescence in Er3+:Yb3+ Co-doped Oxy-fluoride Glasses |
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| Xiao-liang Yang,Zheng-wei Liu,Si-guo Xiao.The Study of Up-conversion Fluorescence in Er3+:Yb3+ Co-doped Oxy-fluoride Glasses[J].Spectroscopy and Spectral Analysis,2002,22(3):357-359. |
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| Authors: | Xiao-liang Yang Zheng-wei Liu Si-guo Xiao |
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| Institution: | Department of Physics, Xiangtan University, Xiangtan 411105, China. |
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| Abstract: | Er3+:Yb3+ co-doped oxy-fluoride glasses with composition of (50-x) GeO2.PbF2.WO3.(6 + x) CdF2.1.4Yb2O3.0.6Er2O3 (x = 10,20,30) were prepared. Their up-conversion fluorescence characteristics were investigated under excitation of 930 nm diode laser. Three strong fluorescence bands of Er3+ whose central wavelength lie in 543, 550 and 655 nm have been observed. The maximum phonon energy is obtained by measuring anti-stokes Raman shifts of the samples, and the up-conversion mechanism is briefly discussed. The influences of host materials composition on up-conversion efficiency are also discussed adopting the average electronegative difference and the cationic field strength of the host. It is found that relative small average electronegative difference and large cationic field strength of host benefit to energy up-conversion. |
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| Keywords: | Energy up conversion Oxy fluoride glass |
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