论文部分内容阅读
采用固相反应法合成了单掺和双掺稀土离子Ｔｍ３＋、Ｅｒ３＋的ＣａＳ：Ｂｉ荧光粉，测定了试样的荧光光谱和有效余辉。与ＣａＳ：Ｂｉ相比，掺入Ｔｍ３＋、Ｅｒ３＋的荧光粉，Ｂｉ３＋特征发射峰４４７ｎｍ增强，有效余辉延长。表明Ｔｍ３＋、Ｅｒ３＋对Ｂｉ３＋在ＣａＳ中的发光产生了敏化作用，Ｔｍ３＋、Ｅｒ３＋在基质晶格中造成了缺隙深能级，讨论了Ｔｍ３＋、Ｅｒ３＋对ＣａＳ：Ｂｉ发光敏化作用的大小和在基质中造成缺隙能级。的深浅。
The CaS: Bi phosphors doped with rare-earth ions Tm3 + and Er3 + were synthesized by the solid-state reaction method. The fluorescence spectra and effective afterglow of the samples were measured. Compared with CaS: Bi, phosphors doped with Tm3 + and Er3 +, the characteristic emission peak of Bi3 + is enhanced at 447nm, and the effective afterglow is prolonged. It is indicated that Tm3 + and Er3 + sensitize the luminescence of Bi3 + in CaS. Tm3 + and Er3 + cause the vacancy deep level in the matrix lattice. The size of Tm3 + and Er3 + for CaS: Bi luminescence sensitization is discussed. The matrix creates a vacancy level. The depth of