Ba4Ce3Na3(PO4)6F2∶Ce3+/Eu2+的发光特性及能量传递
Luminescence property and energy transfer of Ba4Ce3Na3(PO4)6F2∶Ce3+,Eu2+
梁绍龙 1秦晓东 1王嘉瑞 1郑明杰 2李盼来 2徐艳梅1
作者信息
- 1. 华北电力大学数理系,河北保定 071003
- 2. 河北大学物理科学与技术学院,河北保定 071002
- 折叠
摘要
为了解决荧光粉混合物之间存在的颜色再吸收和配比调控问题,采用高温固相法合成了一系列Ba4-xCe3Na3(PO4)6F2∶xEu2+颜色可调荧光粉.在297 nm光激发下,材料呈现双峰发射特征,570 nm黄色发射峰来源于Eu2+的4f65d1→4f7跃迁发射,而380-470 nm范围内的发射来源于Ce3+的4f65d1→4f7跃迁.研究发现,随着Eu2+浓度的增大,材料的发光颜色可以由蓝色变为黄色,色坐标由(0.056,0.069)变为(0.303,0.347),结合荧光衰减曲线,证明Ce3+到Eu2+存在着明显的能量传递.
Abstract
In order to solve the drawbacks of color reabsorption and ratio tuning among phosphor mixtures,a series of Ba4-xCe3Na3(PO4)6F2∶xEu2+color-tunable luminescent materials are synthesized successfully by high-temperature solid-state method.Under the 297 nm excitation,the emission spectra of the phosphor consist of two emission bands,the yellow light with the peak at 570 nm is assigned to the 4f65d1 → 4f7 transition of Eu2+,and the luminescence centers red-shifted from 380 nm to 470 nm is assigned to the transition from 4f65d1 to 4f7 of Ce3+.With increasing the Eu2+doping concentration,the emission region of phosphor gradually moves from the blue region to the yellow region,and the chromaticity coordinates(CIE)also turn from(0.056,0.069)to(0.303,0.347).Combined with the fluorescence decay curve,it proves that there is an obvious energy transfer from Ce3+to Eu2+.
关键词
荧光粉/发光/能量传递/Ba4Ce3Na3(PO4)6F2∶Eu2+Key words
phosphor/luminescence/energy transfer/Ba4Ce3Na3(PO4)6F2∶Eu2+引用本文复制引用
出版年
2025
NETL
NSTL
万方数据