| KAIF4：Ce,Gd磷光体的荧光特性及能量传递 |
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| 引用本文： | 吴根华,陈荣.KAIF4：Ce,Gd磷光体的荧光特性及能量传递[J].光谱学与光谱分析,2000,20(2):243-246. |
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| 作者姓名： | 吴根华 陈荣 |
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| 摘 要： | 采用溶液反应和固相反应，分别合成了ＫＡＩＦ４基质化合物及ＫＡＩＦ４：Ｇｄ、ＫＡＩＦ４：Ｃｅ，Ｇｄ等磷光体，研究了它们的光谱特性。结果表明，ＫＡＩＦ４：Ｇｄ无认顷皮或长波紫外辐激发下，均无任何吸收和发射。在ＫＡＩＦ４：Ｃｅ，Ｇｄ中，Ｃｅ＾３＋离子能有效地将能量传递给Ｇｄ＾３＋离子，使Ｇｄ＾３＋产生了特征锐发射，具发射强度很大。但当Ｃｅ＾３＋浓度固定不变，改变Ｇｄ＾３＋的＾６Ｐ１／２→＾８Ｓ７／２发射
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| 关 键 词： | KAIF4 铈 钆 荧光特性 氟化物磷光体 能量传递 |
Luminescence properties and energy transfer between Ce3+ and Gd3+ ions in KAlF4:Ce, Gd] |
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| G Wu,R Chen,Q Zhang.Luminescence properties and energy transfer between Ce3+ and Gd3+ ions in KAlF4:Ce, Gd][J].Spectroscopy and Spectral Analysis,2000,20(2):243-246. |
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| Authors: | G Wu R Chen Q Zhang |
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| Institution: | Department of Chmistry, Anqing Normal College, 246011 Anqing. |
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| Abstract: | The matrix KAlF4 was prepared with a reaction of mixtures of solution K2CO3 upon certain solution of Al(OH)3 plus HF (40%), dehydrating at 100 degrees C and annealing for 48 h at 450 degrees C. A series of phosphors KAlF4:Ce, Gd were synthesized by a solid reaction method. Their excitation and emission spectra were determined. It was observed that Ce3+ could sensitize Gd3+ in KAlF4 effectively, so as to enhance the emission of Gd3+ significantly. But emission intensity of Gd3 + 6 P1/2-->8S7/2 decreased with the concentration of Gd3+ increased when the concentration of Ce3+ was constant. |
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