| BaY2F8∶Ce, Eu中Ce3+→Eu2+的能量传递和Ce3+→Eu3+的电子转移 |
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| 引用本文： | 张献明,苏海全,叶泽人,贾志宏,臧春雨,石春山.BaY2F8∶Ce, Eu中Ce3+→Eu2+的能量传递和Ce3+→Eu3+的电子转移[J].高等学校化学学报,2001,22(3). |
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| 作者姓名： | 张献明 苏海全 叶泽人 贾志宏 臧春雨 石春山 |
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| 作者单位： | 1. 中山大学化学与化学工程学院,
2. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, |
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| 基金项目： | 国家重点基础研究发展规划项目! (批准号 :G19980 613 2 3 )资助 |
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| 摘 要： | 采用高温固相反应法制备了 Ba Y2 F8∶ Ce3 + ,Ba Y2 F8∶ Eu2 + 和 Ba Y2 F8∶ Ce,Eu,测定了它们的激发、发射和漫反射光谱 .首次发现并研究了在 Ba Y2 F8共掺 Ce F3 和 Eu F3 体系中存在 Ce3 + → Eu2 + 的能量传递和Ce3 +→ Eu3 +的电子转移两种过程及其竞争 .根据光谱数据 ,讨论了 Ce4 +的可能取代格位
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| 关 键 词： | 稀土氟化物 能量传递 电子转移 |
Energy Transfer from Ce3+ to Eu2+ and Electron Transfer from Ce3+ to Eu3+ in BaY2F8∶Ce, Eu Systems |
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| ZHANG Xian Ming ,SU Hai Quan ,YE Ze Ren ,JIA Zhi Hong ZANG Chun Yu ,SHI Chun Shan.Energy Transfer from Ce3+ to Eu2+ and Electron Transfer from Ce3+ to Eu3+ in BaY2F8∶Ce, Eu Systems[J].Chemical Research In Chinese Universities,2001,22(3). |
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| Authors: | ZHANG Xian Ming SU Hai Quan YE Ze Ren JIA Zhi Hong ZANG Chun Yu SHI Chun Shan |
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| Institution: | ZHANG Xian Ming 1,2,SU Hai Quan 1,YE Ze Ren 1,JIA Zhi Hong 1 ZANG Chun Yu 1,SHI Chun Shan 1* |
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| Abstract: | Phorsphors of BaY2F8∶Ce3+, BaY2F8: Eu2+ and BaY2F8∶Ce, Eu were prepared by higher temperature solid reaction and their excitation, emission and diffuse reflection spectra were made. We firstly found that the competition of energy transfer from Ce3+ to Eu2+ and electron transfer from Ce3+ to Eu3+ existed in CeF3 and EuF3-co-doped BaY2F8 systems. The f-f transition emission of Eu2+ was increased with increasing x in systems BaY2F8∶0.03Ce, xEu. Ce4+ ions coexist with Ce3+ ions and substitute Y3+ for Ce4+ in the systems BaY2F8∶Eu, Ce. |
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| Keywords: | Rare earth fluoride Energy transfer Electron transfer |
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