| 节能灯用BaMgAl10O17:Eu2+,Mn2+荧光粉的劣化机理研究 |
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| 引用本文： | 周美娇,张加驰,王育华. 节能灯用BaMgAl10O17:Eu2+,Mn2+荧光粉的劣化机理研究[J]. 物理学报, 2012, 61(7): 74103-074103 |
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| 作者姓名： | 周美娇 张加驰 王育华 |
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| 作者单位： | 兰州大学磁学与磁性材料教育部重点实验室, 兰州 730000 |
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| 基金项目： | 国家自然科学青年基金(批准号：10904057), 国家大学生创新性实验计划(批准号：101073005)和中央高 校科研业务费(批准号：Lzjbky-2011-125)资助的课题. |
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| 摘 要： | 对节能灯用BaMgAl10O17: Eu2+,Mn2+荧光粉的热劣化和紫外辐照劣化机理进行了对比研究. 发现热处理和紫外辐照处理均对BaMgAl10O17: Eu2+,Mn2+产生明显的发光劣化作用. 研究结果表明：热劣化主要涉及到Eu2+ 的氧化及其格位偏移, 而紫外辐照劣化与上述过程无关. 紫外辐照劣化主要源自高能紫外辐照使Eu2+ 处于更加不稳定的状态, 从而降低Eu2+ 的直接吸收和发射强度.
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| 关 键 词： | BaMgAl10O17Eu2+ Mn2+ 热劣化 紫外辐照劣化 |
| 收稿时间： | 2011-06-16 |
The degradation mechanisms of lamp used BaMgAl10O17: Eu2+,Mn2+ phosphor |
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| Zhou Mei-Jiao,Zhang Jia-Chi,Wang Yu-Hua. The degradation mechanisms of lamp used BaMgAl10O17: Eu2+,Mn2+ phosphor[J]. Acta Physica Sinica, 2012, 61(7): 74103-074103 |
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| Authors: | Zhou Mei-Jiao Zhang Jia-Chi Wang Yu-Hua |
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| Affiliation: | Ministry of Education Key Laboratory of Magnetism and Magnetic Materials Lanzhou University, Lanzhou 730000, China |
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| Abstract: | The thermal and the ultraviolet radiation degradation mechanisms of lamp used BaMgAl10O17:Eu2+, Mn2+ phosphor are investigated in a comparative way. Thermal and the ultraviolet radiation treatments can both seriously damage the luminous efficiency of BaMgAl10O17:Eu2+,Mn2+. It is revealed that the thermal degradation is involved in the oxidation and migration of Eu2+ ions. The ultraviolet radiation makes the Eu2+ in metastable state, which weakens the direct absorption of Eu2+ and thus reduces the relative luminescence intensity of BaMgAl10O17:Eu2+,Mn2+. |
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| Keywords: | BaMgAl10O17Eu2+ Mn2+ thermal degradation ultraviolet radiation degradation |
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