作　　者： ; ;

机构地区： 中国科学院长春应用化学研究所

出　　处： 《无机材料学报》 1994年第1期27-32,共6页

摘　　要： 本文详细地研究了ＢａＹＦ５和ＫＣａＦ３基质中Ｅｕ２＋、Ｃｅ３＋浓度对其发光的影响，发现两基质中Ｅｕ２＋、Ｃｅ３＋的猝灭浓度都较低；提出了Ｅｕ２＋、Ｃｅ３＋的浓度猝灭机理，计算了猝灭浓度和临界距离，并与实验结果进行了比较． In present paper relation between the concentrations of Eu2+ and Ce3+and their respective luminescence strength is studied. There exist low quenching concentrations of Eu2+ and Ce3+ in fluorides.Mechanism for concentration quench of Eu2+ and Ce3+ belongs to dipole-dipole interaction. Critical concentrations and cretical distances are calculated by using the data of Eu2+ and Ce3+ spectra as well as lattice structures respectively. The calculated values for critical concentrations are in agreement with the experimental values.

关 键 词： 氟化物 浓度 猝灭 发光材料 铈 铕

领　　域： [理学] [理学]