| 氟化镁锶中铕和铽的电荷迁移及其平衡解析 |
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| 引用本文： | 吴郢,石春山.氟化镁锶中铕和铽的电荷迁移及其平衡解析[J].物理化学学报,1995,11(10):907-911. |
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| 作者姓名： | 吴郢 石春山 |
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| 作者单位： | Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022 |
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| 摘 要： | 在氩气氛中，合成子ＳｒＭｇＦ４：ｘＥｕ，ｙＴｂ复合氟化物磷光体，该体系中Ｅｕ＾３＋和Ｅｕ＾２＋共存，随共掺入Ｔｂ浓度的增加，Ｅｕ＾３＋的荧光发射强度降低，Ｅｕ＾３＋的发光增强，并且Ｅｕ＾２＋的ＥＳＲ信号增强，认为Ｅｕ＾３＋和Ｔｂ３＋之间存在的电荷迁移，即Ｅｕ＾３＋Ｔｂ＾３＋→Ｅｕ＾２＋＋Ｔｂ＾４＋，通过半量手段研究了这一电荷迁移反应的平衡常数。
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| 关 键 词： | 稀土价态 电荷迁移 ESR谱 |
| 收稿时间： | 1994-12-03 |
| 修稿时间： | 1995-03-10 |
Elecutron Transfer and its Equilibrium between Eu and Tb in SrMgF4 System |
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| Wu Yinh,Shi Chun-Shan.Elecutron Transfer and its Equilibrium between Eu and Tb in SrMgF4 System[J].Acta Physico-Chimica Sinica,1995,11(10):907-911. |
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| Authors: | Wu Yinh Shi Chun-Shan |
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| Institution: | Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022 |
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| Abstract: | Emission of europium(Ⅱ) and europium(Ⅲ) have been observed in SrMgF4:xEu, yTb phosphors which are synthesized in Ar flow. The valence state of Eu is influenced by terbium. It is noted that the intensities of the ESR peaks corresponding to Eu2+are increased when terbium ion is codoped, this can be explained by electron transfer mechanism which is Eu3++Tb3+ →Eu2++Tb4+. And its equilibrium constant is calculated. |
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| Keywords: | Rare earth valence Electron transfer ESR spectrum |
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