| LUMINESCENCE CENTERS OF Eu~(2 ) IN KCaF_3:Eu~(2 ) |
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| 作者姓名： | 刘应亮 石春山 李有谟 |
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| 作者单位： | Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，China，Laboratory of Rare Earth Chemistry and Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，China，Laboratory of Rare Earth Chemistry and Physics，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun 130022，China |
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| 基金项目： | the National Nutural Science Foundation of China |
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| 摘 要： | The nature of the emission center of Eu~(2 ) in KCaF_3:Eu~(2 ) strongly depends on the preparative condi-tions.Experimental results show that there are two different d→f transition emission bands,and the origin ofthese two emission bands,their interrelationship and the effect of doping concentration on them have been dis-cussed.A Eu~(2 )-Eu~(3 ) valency change process has been proposed.
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