White-Light-Emitting (Ca, Sr, Ba)MgSi2O6 : Eu, Mn Phosphor Pumped by Using an Ultraviolet LED

被引：4
作者：
Lee, Sung Hoon [1 ]
Park, Je Hong [1 ]
Park, Boo Won [1 ]
Choi, Nam Sik [1 ]
Seo, Kwang Il [1 ]
Kim, Jong Su [1 ]
机构：
[1] Pukyong Natl Univ, Dept Image Syst Sci & Engn, Pusan 608739, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2008年 / 53卷 / 05期
关键词：
White-light-emitting diode; Phosphor; Photoluminescence;
D O I：
10.3938/jkps.53.2458
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The (Ca, Sr, Ba)MgSi2O6 : Eu2+, Mn2+ phosphor shows three emission bands, peaking at around 450 nm (blue), 580 nm (yellow) and 680 nm (red), respectively. As the Sr and the Ba ratios in the (Ca, Sr, Ba)MgSi2O6 : Eu2+, Mn2+ phosphors increase, the decay times of the blue emission bands are lengthened by an order of millisecond and their luminescent intensities are improved. These behaviors can be explained in terms of the Ca2+ vacancies or the lattice defects generated by the substitution of larger. Sr2+ or Ba2+ ions. Also, the white light is generated by blending the (Ca, Sr, Ba)MgSi2O6 : Eu2+, Mn2+ phosphor with a green-emissive (Ba, Sr)(2)SiO4 EU2+ phosphor excited by using an ultraviolet line of 365 nm.
引用
收藏
页码：2458 / 2461
页数：4
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