Synthesis and photoluminescence of Eu2+–Mg2+ co-doped γ-AlON phosphors
Synthesis and photoluminescence of Eu2+–Mg2+ co-doped γ-AlON phosphors
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DOI：
10.1016/j.matlet.2009.04.002
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发表时间：
2009-07
影响因子：
3
通讯作者：
L. Yin;Xin Xu;L. Hao;W. Xie;Yifei Wang;Lixu Yang;Xiufang Yang
中科院分区：
文献类型：
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作者：
L. Yin;Xin Xu;L. Hao;W. Xie;Yifei Wang;Lixu Yang;Xiufang Yang
采用固态反应法制备了Eu2+ -Mg2 +共掺杂的AlON荧光粉。研究了它们的结构和光致发光性能。Al被Mg取代有利于纯尖晶石型AlON相的形成和Eu在AlON晶格中的结合。第二相出现在含Eu粉末中。在310nm紫外光激发下，3% Eu2+ -10% Mg2+共掺杂荧光粉在430 ~ 620nm波长范围内表现出较强的宽发射带，其中最大发射带在490 nm左右，属于Eu2+离子典型的4f65d1 - 4f7跃迁。由于Eu2+离子之间的相互作用，随着Eu2+浓度的增加，发射峰发生了红移。
Eu2+–Mg2+co-doped AlON phosphors were prepared by a solid-state reaction route. Their structure and photoluminescence properties were studied. The substitution of Al by Mg favored the formation of pure spinel-type AlON phase and the incorporation of Eu into AlON crystal lattice. Second phase appeared in Eu containing powders. Under ultraviolet excitation at 310 nm, 3% Eu2+–10% Mg2+co-doped phosphors exhibited a strong broad emission band in the wavelength range of 430–620 nm with a maximum at about 490 nm assigned to the typical 4f65d1–4f7transition of the Eu2+ion. Red shift of the emission peak is observed as the increase of Eu2+concentration due to interaction between Eu2+ions.