期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Influence of synthetic temperature and heating time on the luminescence behavior of M_5(PO_4)_3Cl:Eu^(2+),Mn^(2+)(M=Ca, Sr) phosphors 被引量:1
1
作者 杨凤丽 安炜 +5 位作者 李宏彦 胡运生 徐会兵 叶信宇 庄卫东 荆西平 《Journal of Rare Earths》 SCIE EI CAS CSCD 2015年第11期1129-1136,共8页
To further understand the energy loss mechanism of the "charge transfer process" that was proposed in our previous work on Eu^2+-Mn^2+ co-doped phosphors, the influence of synthetic temperature and heating time on... To further understand the energy loss mechanism of the "charge transfer process" that was proposed in our previous work on Eu^2+-Mn^2+ co-doped phosphors, the influence of synthetic temperature and heating time on the photoluminescence(PL) behavior of M5(PO4)3Cl:Eu^2+,Mn^2+(M=Ca, Sr) phosphors was investigated by analyzing their PL spectra and decay curves. For the Ca phase, an increase in the synthetic temperature resulted in an increase in the loss from the "charge transfer process" since more Eu^2+ ions were involved in the Eu^2+-Mn^2+ clusters. This was contrary to the thermodynamic expectation. To solve this contradiction, we proposed that the formation of Eu^2+-Mn^2+ clusters was kinetically blocked at lower synthetic temperatures. With an increase in heating time for the phosphors synthesized at lower temperature(such as 1100 ℃) the PL intensity decreased, which supported the above assertion. 展开更多
关键词 LED phosphors Eu^2+-Mn^2+ co-doping apatite synthetic temperature heating time rare earths
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部