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引入Ce3+作为敏化离子增强Ca9Al(PO4)7:Sm3+的发光强度
作者:刘海燕1 李美凡2 王智朋2  美2 曹冬雪2 周玲玉2 王卓光2  聪2 王志军1 李盼来1 
单位:1. 河北大学网络空间安全与计算机学院 河北 保定 071002 2. 河北大学物理科学与技术学院 河北 保定 071002 
关键词:荧光粉 能量传递 钐铈共掺磷酸铝钙 高温固相法 
分类号:O482.31
出版年,卷(期):页码:2018,46(10):0-0
DOI:10.14062/j.issn.0454-5648.2018.10.16
摘要:

 采用高温固相法制备了Ce3+、Sm3+和Ce3+/Sm3+掺杂的Ca9Al(PO4)7 荧光粉。以327 nm 紫外光作为激发源时,

Ca9Al(PO4)7:Ce3+在386 nm 处出现宽发射峰,其发射对应于Ce3+的4f 05d1→4f 1 跃迁的蓝色光,主峰位于386 nm;在407 nm
近紫外光激发下,Ca9Al(PO4)7:Sm3+发射红色光。为了增强Ca9Al(PO4)7:Sm3+的发射强度,将Ce3+引入到材料中,通过Ce3+
到Sm3+的能量传递,有效地增强了材料的发射强度,为开展白光LEDs 用红色荧光粉提供了参考。

 In order to enhance the luminescence intensity of Sm3+ in Ca9Al(PO4)7, a series of Ce3+, Sm3+ and Ce3+/Sm3+ doped

Ca9Al(PO4)7 phosphors were synthesized by a high-temperature solid-state method. When the 327-nm light is used as an excitation
source, Ca9Al(PO4)7:Ce3+ can show a broad band peaking at 386 nm, which corresponds to the 4f 05d1→4f 1 transition of Ce3+ ions.
Ca9Al(PO4)7:Sm3+ can be efficiently excited by 407 nm near-ultraviolet, thus emitting red light. The luminescence intensity of
Ca9Al(PO4)7:Sm3+ can be enhanced when Ce3+ ions are introduced into Ca9Al(PO4)7:Sm3+ due to the energy transfer from Ce3+ to
Sm3+ ions.
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参考文献:

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