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.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第1期27-32,共6页
Journal of Inorganic Materials
基金
国家自然科学基金
关键词
氟化物
浓度
猝灭
发光材料
铈
铕
Fluorides, Europium(Ⅱ), Cerium(Ⅲ), Concentration quench, Mechanism
