LiBaBO3: Dy3+材料制备及发光特性研究

人工晶体学报, 2009, 38(4): 884-887.

LiBaBO3: Dy3+材料制备及发光特性研究

李盼来 ^1, , 王志军 ^2, , 王颖 ^3, , 杨志平 ^4, , 郭庆林 ^5,

1.河北大学物理科学与技术学院,保定,071002

2.河北大学物理科学与技术学院,保定,071002

3.河北大学物理科学与技术学院,保定,071002

4.河北大学物理科学与技术学院,保定,071002

5.河北大学物理科学与技术学院,保定,071002

基金项目: 河北大学青年基金(2006Q06) 河北省教育厅基金(2009313) 河北省科学技术发展基金(51215103b) 河北省自然科学基金(E2009000209)

关键词：白光LED , LiBaBO3:Dy3+ , 发光特性

Preparation and Luminescent Characteristics of LiBaBO3: Dy 3+ Phosphor

采用高温固相法制备了LiBaBO3: Dy3+发光材料.测得LiBaBO3: Dy3+材料的发射光谱为一多峰宽谱,主峰分别为486 nm,578 nm和666 nm;监测578 nm发射峰时所得材料的激发光谱为一多峰宽谱,主峰分别为331 nm,368 nm,397 nm,433 nm,462 nm和478 nm.研究了Dy3+掺杂浓度对LiBaBO3: Dy3+材料发射光谱及发光强度的影响.结果显示:随着Dy3+浓度的增大,黄、蓝发射峰强度比(Y/B)逐渐增大;LiBaBO3: Dy3+材料发光强度随Dy3+浓度的增大呈现先增大后减小的趋势,在Dy3+浓度为3 mol%时到达峰值,其浓度猝灭机理为电偶极-偶极相互作用.

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