| 真空紫外光激发下Ce3+、Tb3+激活的BaCa2(BO3)2的发光性质 |
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| 引用本文： | 林惠红,张国斌,梁宏斌.真空紫外光激发下Ce3+、Tb3+激活的BaCa2(BO3)2的发光性质[J].发光学报,2013,34(3):276-281. |
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| 作者姓名： | 林惠红 张国斌 梁宏斌 |
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| 作者单位： | 1. 中山大学 生物无机与合成化学教育部重点实验室,光电材料及应用国家重点实验室, 化学与化学工程学院, 广东 广州 510275;
2. 韩山师范学院 化学系, 广东 潮州 521041;
3. 中国科学技术大学 国家同步辐射实验室, 安徽 合肥 230026 |
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| 基金项目： | 国家自然科学基金(20871121);广东高校优秀青年创新人才培养计划(LYM11091)资助项目 |
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| 摘 要： | 利用XRD、VUV及UV光谱等方法对Ce3+、Tb3+离子掺杂以及Ce3+、Tb3+离子共掺的3种BaCa2(BO3)2荧光粉的相纯度、发光性质、浓度猝灭现象进行研究。结果表明:3种荧光粉在VUV波段有较好的吸收,基质吸收带位于140～190 nm范围。Ce3+在BaCa2(BO3)2的最低4f5d跃迁带位置在360 nm附近,其5d→2FJ(J=5/2, 7/2)发射峰分别位于393,424 nm。Tb3+掺杂的样品在172 nm激发下的发射光谱由4个窄带组成,分别对应5D4→7FJ(J=3,4,5,6)的跃迁,其中占主导位置的是5D4→7F5的跃迁,大约位于543 nm处,主要为绿光发射。在Ce3+,Tb3+离子共掺杂的BaCa2(BO3)2光谱中,观察到Ce3+-Tb3+离子间有能量传递。
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| 关 键 词： | 荧光粉 真空紫外 Ce3+ Tb3+ BaCa2(BO3)2 |
| 收稿时间： | 2012-11-12 |
Luminescence of Ce3+, Tb3+ Activated BaCa2(BO3)2 under Vacuum Ultraviolet Excitation |
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| LIN Hui-hong,ZHANG Guo-bin,LIANG Hong-bin.Luminescence of Ce3+, Tb3+ Activated BaCa2(BO3)2 under Vacuum Ultraviolet Excitation[J].Chinese Journal of Luminescence,2013,34(3):276-281. |
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| Authors: | LIN Hui-hong ZHANG Guo-bin LIANG Hong-bin |
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| Institution: | 1. MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China;
2. Department of Chemistry, Hanshan Normal University, Chaozhou 521041, China;
3. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The luminescence properties of Ce3+, Tb3+ activated BaCa2(BO3)2 phosphors were investigated by vacuum-ultraviolet (VUV) and ultraviolet(UV) spectra. The phase purity was characterized by the powder x-ray diffraction (XRD). The results demonstrate that the band near 140～190 nm range in the VUV excitation spectra is ascribed to the host-related absorption. The lowest 5d state of Ce3+ in BaCa2(BO3)2 is located at 360 nm, and two emission bands from Ce3+ 5d→2FJ(J=5/2, 7/2) were found at about 393, 424 nm. The emission bands of Tb3+-doped BaCa2(BO3)2 consists of four components, which correspond to the 5D4-7FJ(J=3,4,5,6) transitions with the dominant 5D4-7F5 transition at 543 nm. The energy-transfer between Ce3+ and Tb3+ occurs in Ce3+, Tb3+ co-activated BaCa2(BO3)2 phosphors. |
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| Keywords: | luminescence vacuum-ultraviolet Ce3+ Tb3+ BaCa2(BO3)2 |
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