The thermal and irradiation degradation mechanisms of Eu2+,Mn2+ co-doped BaMgAl10O17 phosphor
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- 作者：WenJing Liu (1)
JiaChi Zhang (1) zhangjch@lzu.edu.cn
MeiJiao Zhou (1)
YuHua Wang (1) wyh@lzu.edu.cn - 关键词：BaMgAl10O17 ; Eu2+ – ; Mn2+ – ; phosphor – ; luminescence – ; degradation mechanism
- 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
- 出版年：2012
- 出版时间：October 2012
- 年：2012
- 卷：55
- 期：10
- 页码：1757-1762
- 全文大小：595.3 KB
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- ISSN：1869-1927
文摘
The mechanisms of thermal, ultraviolet and vacuum ultraviolet radiation degradation behaviors of the Eu2+,Mn2+ co-doped BaMgAl10O17 phosphors were investigated comparatively. The result indicated that the Mn2+ ions which replaced the Mg2+ sites in the sample were stable and negligibly influenced by treatments. The oxidation and migration of Eu2+ ions primarily caused the thermal degradation of the sample. The vacuum ultraviolet radiation degradation was primarily because of the migration of Eu2+. The ultraviolet radiation increased traps which trended the Eu2+r to be in a metastable state, leading to the ultraviolet radiation degradation of the sample. The vacuum ultraviolet excited luminous loss of samples after ultraviolet radiation partly originated from the interruption of energy transfer from the host to activators by traps.