Energy transfer and color tuning in the Ba9Sc2Si6O24:Ce3+,Eu2+,Mn2+ phosphor

被引：10
|
作者：
Bian, Liu [1 ]
Liu, Chun-Wei [2 ]
Gao, Jun [3 ]
Jing, Xi-Ping [1 ]
机构：
[1] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
[2] Univ Sci & Technol Beijing, Coll Chem & Biol Engn, Beijing 100083, Peoples R China
[3] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 85期
基金：
中国国家自然科学基金;
关键词：
PHOTOLUMINESCENCE PROPERTIES; CRYSTAL-STRUCTURE; LUMINESCENCE PROPERTIES; CE3+; MN2+; EU2+;
D O I：
10.1039/c5ra10945k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of single phase Ba9-x-ySc2-zSi6O24:xCe,yEu,zMn phosphors was synthesized by high-temperature solid-state reactions. The luminescent properties of single-doped, co-doped and tri-doped Ce3+/Eu2+/Mn2+ in the host Ba9Sc2Si6O24 were studied on the basis of the photoluminescence excitation/emission spectra, photoluminescence decay behaviors and time resolved emission spectra. Two types of luminescent centers of Eu(1)/Eu(2,3) as well as Ce(1)/Ce(2,3) occupying different crystallography sites were confirmed, and the sensitizing effects of Ce3+ -> Eu2+, Ce2+ -> Mn2+ and Eu2+ -> Mn2+ were clearly observed. In the tri-doped samples, Eu2+ competed with Mn2+ for the energy transferred from Ce3+ and also transferred its observed energy to Mn2+. Furthermore, the tri-doped Ba9Sc2Si6O24 phosphors emitting white light with various correlated color temperatures were obtained by adjusting the relative content of Ce3+, Eu2+ and Mn2+.
引用
收藏
页码：69458 / 69465
页数：8
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