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| Investigations on Valence-Change Behaviors of Europium Ions in Eu-Doped Aluminate and Silicate Phosphors | |
| 引用本文： | 彭明营 达宁 乔延波 吴伯涛 汪晨 陈丹平 邱建荣. Investigations on Valence-Change Behaviors of Europium Ions in Eu-Doped Aluminate and Silicate Phosphors[J]. 中国稀土学报(英文版), 2006, 24(6): 749-753. DOI: 10.1016/S1002-0721(07)60022-2 |
| 作者姓名： | 彭明营 达宁 乔延波 吴伯涛 汪晨 陈丹平 邱建荣 |
| 作者单位： | [1]State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics ＆ Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China [2]Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
| 摘 要： | Compounds of Sr3Al2O6∶Eu, Sr4Al14O25∶Eu, and BaZnSiO4∶Eu were synthesized by high-temperature solid state reactions. The doping Eu3 ions were partially reduced to Eu2 in Sr4Al14O25∶Eu and BaZnSiO4∶Eu prepared in an oxidizing atmosphere, N2 O2. However, such an abnormal reduction process could not be performed in Sr3Al2O6∶Eu, which was also prepared in an atmosphere of N2 O2. Moreover, even though Sr3Al2O6∶Eu was synthesized in a reducing condition CO, only part of the Eu3 ions was reduced to Eu2 . The existence of trivalent and divalent europium ions was confirmed by photoluminescent spectra. The different valence-change behaviors of europium ions in the hosts were attributed to the difference in host crystal structures. The higher the crystal structure stiffness, the easier the reduction process from Eu3 to Eu2 . |
| 关 键 词： | 铕离子 铕掺杂 铝酸盐磷光粉 硅酸盐磷光粉 价态变化行为 稀土 |
| 文章编号： | 1002-0721（2006）06-0749-05 |
| 收稿时间： | 2006-06-25 |
| 修稿时间： | 2006-09-08 |
Investigations on Valence-Change Behaviors of Europium Ions in Eu-Doped Aluminate and Silicate Phosphors |
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| Peng , Da Ning, Qiao Yanbo, Wu Baotao, Wang Chen, Chen Danping,Qiu Jianrong. Investigations on Valence-Change Behaviors of Europium Ions in Eu-Doped Aluminate and Silicate Phosphors[J]. Journal of Rare Earths, 2006, 24(6): 749-753. DOI: 10.1016/S1002-0721(07)60022-2 | |
| Authors: | Peng Da Ning Qiao Yanbo Wu Baotao Wang Chen Chen Danping Qiu Jianrong |
| Affiliation: | aState Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China bGraduate School of Chinese Academy of Sciences, Beijing 100039, China |
| Abstract: | Compounds of Sr3Al2O6 : Eu, Sr4Al14O25 : Eu, and BaZnSiO4 : Eu were synthesized by high-temperature solid state reactions. The doping Eu3+ ions were partially reduced to Eu2+ in Sr4Al14O25: Eu and BaZnSiO4: Eu prepared in an oxidizing atmosphere, N2 + O2. However, such an abnormal reduction process could not be performed in Sr3Al2O6 : Eu, which was also prepared in an atmosphere of N2 + O2. Moreover, even though Sr3Al2O6: Eu was synthesized in a reducing condition CO, only part of the Eu3+ ions was reduced to Eu2+. The existence of trivalent and divalent europium ions was confirmed by photoluminescent spectra. The different valence-change behaviors of europium ions in the hosts were attributed to the difference in host crystal structures. The higher the crystal structure stiffness, the easier the reduction process from Eu3+ to Eu2+. |
| Keywords: | aluminate phosphors silicate phosphors Eu3 Eu2 rare earths |
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