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黄绿色长余辉发光材料Ba2B2O5:Ce3+,Dy3+的发光特性及机理
作者:孙江1 徐书超1 宋武睿1 马明毅1 李美凡1 冀春延1 孟庆伟1 张坤2 王志军1 
单位:1. 河北大学物理科学与技术学院 河北 保定071002 2. 河北大学工商学院 河北 保定 071002 
关键词:硼酸钡 铈与镝掺杂 发光性能 长余辉荧光粉 
分类号:O482.31
出版年,卷(期):页码:2017,45(10):1454-1458
DOI:10.14062/j.issn.0454-5648.2017.10.10
摘要:

 采用高温固相法制备了Ba2B2O5:Ce3+,Dy3+荧光粉,研究了荧光粉的发光特性及发光机理。结果表明:Ba2B2O5:Dy3+没有表现出长余辉发光特征,当掺杂Ce3+于Ba2B2O5:Dy3+后,荧光粉材料仍呈现为白色发光特征;但是Ba2B2O5:Ce3+,Dy3+表现出了明显的黄绿色长余辉发光特性,该发光主要由陷阱所释放导带电子与发光中心Dy3+的直接复合而产生的。研究结果将对长余辉发光材料的发展具有很好的参考意义。

 

 Ba2B2O5: Ce3+,Dy3+ phosphor was synthesized via a high-temperature solid state method, and the luminescence properties and mechanism were investigated. The results show that there is no long persistent luminescence in Dy3+ singe-doped Ba2B2O5. For Ce3+/Dy3+ co-doped in Ba2B2O5, the yellow-green long persistent luminescence phenomenon appears although the phosphor still emits white light, which may originate from the direct recombination of the conduction electrons released from traps with the emission centers of Dy3+. The results obtained will be useful for the development of long afterglow materials.

 
基金项目:
中国博士后基金(2015M581311);国家级大学生创新、创业训练计划项目(201610075003);河北大学大学生创新、创业训练计划项目(2016128, 2016146)。
作者简介:
孙 江(1974—),男,博士
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