期刊
INORGANIC CHEMISTRY
卷 54, 期 4, 页码 1690-1697出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic5026312
关键词
-
资金
- National Nature Science Foundation of China [61265004, 51272097]
- Foundation of Application Research of Yunnan Province, China [2011FB022]
- Chinese Specialized Research Fund for the Doctoral Program of Higher Education [201153142001]
- Postdoctoral Science Foundation of China [2011M501424]
- Nature and Science Fund from Yunnan Province Ministry of Education [2011C13211708]
Visible-light persistent phosphors are commonly used as self-sustained night vision and fluorescence labeling materials. From the inspiration of the structure of six-membered rings plane in Ba-4(Si3O8)(2), a similar structure of Ba5Si8O21 is expected that could exhibit more excellent phosphorescence property. In this Article, we report a novel visible long-lasting luminescence phosphor of Eu2+/Dy3+ codoped Ba5Si8O21 for the first time. Ba5Si8O21:Eu2+,Dy3+ phosphor could be activated effectively by sunlight or even in severe weather conditions, which is mainly attributed to the broad excitation spectrum (200-455 nm) and highly responds to UV-A and violet-light in the solar spectrum. After activation, Ba5Si8O21:Eu2+,Dy3+ emits intense emission at 380-680 nm with persistent phosphorescence beyond 16 h. Moreover, it exhibits excellent and stable phosphorescence even in water, indicating that Ba5Si8O21:Eu2+,Dy3+ will be a all-weather material that can be effectively and repeatedly charged by natural daylight in all kinds of open-air environments. Furthermore, the quantum tunneling behavior was illustrated in the afterglow mechanism.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据