| LnZr(BO3)2:Eu3+(Ln=Ba,Sr)的真空紫外光谱特性的研究 |
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| 引用本文： | 沈芳,何大伟,刘红利,徐建华.LnZr(BO3)2:Eu3+(Ln=Ba,Sr)的真空紫外光谱特性的研究[J].光谱学与光谱分析,2006,26(7):1195-1198. |
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| 作者姓名： | 沈芳 何大伟 刘红利 徐建华 |
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| 作者单位： | 1. 北京交通大学光电子技术研究所,信息存储和显示材料实验室,北京,100044
2. 中国科学院高能物理研究所,同步辐射实验室,北京,100039 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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北京市自然科学基金 |
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| 摘 要： | 采用高温固相法合成了Ba(1-x)SrxZr(BO3)2:Eu3 系列样品,样品Ba(1-x)SrxZr(BO3)2:Eu3 激发谱在130～170nm和230 nm区域有两个很强的吸收带,位于130～170nm的吸收带主要是硼酸盐基质的吸收;位于230nm附近的吸收主要是Eu3 电荷转移态的吸收.当在样品中以Al部分取代Zr时,电荷转移态的吸收明显增强,并且Ba(1-x)SrxZr(BO3)2:Eu3 发射强度也会明显增强;随着x的增大,硼酸盐基质的吸收强度减弱,基质吸收带的主峰值向低能方向移动了大约30 nm.样品Ba(1-x)SrxZr(BO3)2:Eu3 在147nm激发下,发射出主峰值位于616nm的强红光,对应Eu3 电偶极(5D0→7F2)跃迁发射.
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| 关 键 词： | 硼酸盐 VUV 激发光谱 发射光谱 能量传递 |
| 文章编号： | 1000-0593（2006）07-1195-04 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-08-16 |
VUV Excited Luminescence of LnZr(BO3)2: Eu3+ (Ln=Ba, Sr) |
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| SHEN Fang,HE Da-wei,LIU Hong-li,XU Jian-hua.VUV Excited Luminescence of LnZr(BO3)2: Eu3+ (Ln=Ba, Sr)[J].Spectroscopy and Spectral Analysis,2006,26(7):1195-1198. |
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| Authors: | SHEN Fang HE Da-wei LIU Hong-li XU Jian-hua |
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| Institution: | 1. Laboratory of Material for Information Storage and Display, Institute of Optoelectronic Technology, Beijing Jiaotong Univer sity, Beijing 100044, China;2. Laboratory of Beijing Synchrotron Radiation, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Powder samples of Ba(1-x) Sr(x)Zr(BO3)2 : Eu3+ (0 < or = x < or = 1) were prepared by the conventional solid state reaction method. The excitation spectrum shows a strong absorption in the VUV region with the broad absorption band edge at 130-170 nm due to the host and the f --> d transition of Eu3+, and another absorption band of charge-transfer state (CTS) of Eu3+ in the region of 230 nm. The absorption of the charge-transfer band of Eu3+ can be increased by incorporating Al3+ ion into Zr4+ ion lattice. The luminescence of Ba(1-x) Sr(x)Zr(BO3)2 : Eu3+ is also increased by incorporating Al3+ into the lattices. In Ba(1-x) Sr(x)Zr (BO3)2 : Eu3+, the intensity of the absorption band (130-170 nm) decreases, and the band shifts about 30 nm toward lower energy with x increasing. The emission spectra revealed an intense and sharp (616 nm) red color emission from Eu3+ (5 Do --> F2) transition under 147 nm VUV excitation. |
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| Keywords: | Borate VUV Excitation spectra Emission spectra Energy transfer |
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