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应用科学学报 ›› 1991, Vol. 9 ›› Issue (4): 329-334.

• 论文 • 上一篇    下一篇

Bi3+和EU3+在Li0.3MeAl0.3-x-ySiO3中的发光

李彬1, 田一光2, 白玉白1   

  1. 1. 吉林大学;
    2. 沈阳化工学院
  • 收稿日期:1990-05-14 修回日期:1990-11-24 出版日期:1991-12-31 发布日期:1991-12-31

LUMINESCENCE OF Bi3+ AND Eu3+ IONS IN Li0.3MeAl0.3-x-ySiO3(Me=Mg, Ca, Sr, Ba)

LI BIN1, TIAN YIGUANG2, BAI YUBAI1   

  1. 1. Jilin University;
    2. Shenyang Institute of Chemical Technology
  • Received:1990-05-14 Revised:1990-11-24 Online:1991-12-31 Published:1991-12-31

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摘要： 该文介绍以Eu3+和Bi3+离子为掺杂剂,以Li0.3Me0.4Al0.3SiO3为基质(Me=Mg,Ca,Sr,Ba),用高温固相反应合成了含不同碱土金属,不同掺杂种类的硅铝酸盐系列发光体.激发光谱和发射光谱研究结果表明,在该体系中Bi3+对Eu3+具有较好的敏化作用,促进了Eu3+的特征发光.基质中不同的碱土金属离子对Bi3+和Eu3+的发光特性和Bi3+对Eu3+的敏化作用具有明显的影响。当Me=Sr时,激发Bi3+所得到的Eu3+发光以612nm红光为主,并且相对强度较高.在相同激发条件下(395nm),Li0.3BaAl0.3SiO3:Eu的发射强度是Y (V,P) O4:Eu3+的2倍.这表明Li0.3BaAl0.3SiO3是很适合于Eu3+激活的基质材料.

关键词: 发光材料, 碱金属碱土金属硅铝酸盐

Abstract: The luminophors of silicates Li0.3MeAl0.3SiO3:Eu, Bi (Me=Mg, Ca, Sr, Ba) were synthesized and luminescence properties of Bi3+ and Eu3+ ions were studied. The effects and regularities of Me (Ⅱ) ions on the luminescence of Eu3+ and Bi3+ ions were also investigated. The study on the luminescence of silicates Li0.3MeAl0.3SiO3:Eu, Bi indicated that there were energy transitions from the Bi3+ ion to Eu3+ ion and that Bi3+ions acted as both sensitizer and co-activator. The best promoting result of Bi3+ to Eu3+ was obtained when Me was Sr, i. e. the relative intensity was the highest by exciting the Bi3+ ion. The main emission of the Eu3+ion was from 5D0-7F1 transition for Me=Mg, Oa, Sr, and from 5D0-7F2 for Ba.
Under UV excitation of 395nm, the luminescence intensity of Eu3+ in Li0.3BaAl0.3SiO3:Eu was 2 times that of Y(V, P)O4:Eu, for both, of 5D0-7F1 and of 5D0-7F2 transition emissions. The experiment results demonstrated that the optimum synthesis condition was 950℃ and 4 hours sintered in twice and silicate Li0.3BaAl0.3SiO3 was an excellent host lattice to obtain efficient photoluminescence materials.

Key words: Inorganic materials, photoluminescence, silicate