Eu^3＋在SrZnP2O7中的发光性能和Eu^3＋，Bi^3＋间的能量传递  

Luminescence Properties of Eu^(3+) and Energy Transfer of Eu^(3+) and Bi^(3+) in SrZnP_2O_7

作　　者：杨志平[1] 李小宁[2] 杨广伟[1] 王少丽[1] 田晶[2] 路亚娟[1] 

机构地区：[1]河北大学物理科学与技术学院发光与显示研究所,河北保定071002 [2]河北大学电子信息工程学院,河北保定071002

出　　处：《中国稀土学报》2008年第2期249-252,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(50272013,50372086)

摘　　要：采用高温固相法合成了SrZnP2O7∶Eu3+荧光粉,该荧光粉的激发主峰值位于400 nm,适用于UVLED管芯的激发;在紫外激发下的发射峰由位于591和597 nm(5D0~7F1),616,624和629 nm(5D0~7F2),656 nm(5D0~7F3)及688 nm(5D0~7F4)4组线状峰构成,对应Eu3+的特征跃迁,呈现橙红色发光。分析了Eu3+离子浓度对样品发光效率的影响,随着浓度增加,其发射一直增强,但其发光效率已经开始减弱。Bi3+的加入使发光强度得到很大提高,并讨论了在SrZnP2O7基质中Bi3+对Eu3+的能量传递和敏化作用。SrZnP2O7 ：Eu^3＋ phosphor was synthesized by high temperature solid state reaction. Lumines- cence properties were studied. The strongest excitation spectrum was at 400 nm. Therefor the red-emitting phosphor SrZnP2O7 ：Eu^3＋ was suitable for white light emitting diode （w-LED） based on UV InGaN chip. The emission bands peaked at 591 nm, 597 nm （^5D0 - ^7F1）, 616 nm, 624 nm, 629 nm （^5D0- ^7F2）, 656 nm（^5D0-^7F3） and 688 nm（^5D0- ^7F4） correspond to the typical transitions of Eu^3 ＋ . The influence of the concentration of Eu^3 ＋ ions to the emission intensity was investigated. Emission intensity kept on increasing until the concentration of Eu^3＋ was 11%. It was also found that the Bi^3＋ could increase the emission intensity of SrZnP2O7 ：Eu^3＋ . Energy transfer from Bi^3＋ to Eu^3＋ in the luminophor was discussed.

关 键 词：荧光粉 铕 铋 能量传递 稀土 

分 类 号：O614[理学—无机化学] O482.31[理学—化学]