Effects of crystal field on photoluminescence properties of Ca2Al2SiO7:Eu2+ phosphors

被引：1
|
作者：
杨鹏辉 [1 ]
余雪 [1 ,2 ]
余红玲 [1 ]
姜庭明 [1 ]
周大成 [1 ,2 ]
邱建备 [1 ,2 ]
机构：
[1] College of Materials Science and Engineering,Kunming University of Science and Technology
[2] Key Laboratory of Advanced Materials of Yunnan Province,College of Materials Science and Engineering,Kuming University of Science and Technology
来源：
Journal of Rare Earths | 2012年 / 30卷 / 12期
基金：
高等学校博士学科点专项科研基金;
关键词：
luminescence; Ca2Al2SiO7:Eu2+; crystal field splitting; rare earths;
D O I：
暂无
中图分类号：
O611.3 [性质];
学科分类号：
070301 ; 081704 ;
摘要：
A series of single-phased Ca2Al2SiO7:Eu2+phosphors were synthesized by the solid-state reaction. Their structure and photolumi-nescence properties were investigated by the X-ray powder diffraction (XRD) and excitation and emission spectra in detail. The emission spectra of Ca2Al2SiO7:Eu2+phosphors consisted of blue and green band located at419 and542 nm, respectively. The relative intensities of the blue and green emission changed with Eu2+concentration and were sensitive to the excitation wavelength. The unique photoluminescence property originated from the 4f7→4f65d transition of Eu2+ at different energy levels, on which the effect of the crystal field strength was con-sidered to be tailed by adjusting the host composition.
引用
收藏
页码：1208 / 1212
页数：5
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