Synthesis and photoluminescence studies of Ba(Gd, Ln)B9O16:Eu3+ (Ln=La,Y) phosphors for n-UV LED lighting and display devices

被引：29

作者：

Rangari, V. V. ^{[1
]}

Dhoble, S. J. ^{[1
]}

机构：

[1] RTM Nagpur Univ, Dept Phys, Nagpur 440033, Maharashtra, India

来源：

JOURNAL OF RARE EARTHS | 2015年 / 33卷 / 02期

关键词：

phosphor; solid state diffusion; display devices; photoluminescence; rare earths; RED-EMITTING PHOSPHOR; LUMINESCENCE PROPERTIES; EU3+; EMISSION; TB-3+; EU-3+; PR3+;

D O I：

10.1016/S1002-0721(14)60394-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

BaGdB9O16:Eu3+ and Ba(Gd, Ln)B9O16:Eu3+ (Ln=La,Y) phosphors were synthesized by solid state diffusion method. The X-ray diffraction, scanning electron microscopy (SEM) and photoluminescence properties were investigated. The as-synthesized BaGdB9O16: Eu3+ and Ba(Gd, Ln) B9O16: Eu3+ (Ln= La, Y) phosphors showed strong red emission under ultraviolet light excitation. By partially substituting Gd3+ by La3+ and Y3+ ions in the host BaGdB9O16:Eu3+ materials, the maximum emission intensity was observed for the optimum composition of BaGd0.91La0.8B9O16Eu0.01 phosphor. The experimental results indicated that the Eu doped BaGdB9O16 and Ba(Gd, Ln) B9O16 (Ln= La, Y) phosphors were promising red phosphors, which might find potential applications in near-UV excited LED lighting as well as display devices. Comparison of as-synthesized phosphors with standard phosphor used in CFL (compact fluorescent lamp) was also done. Energy transfer mechanism of Gd3+ to Eu3+ was also discussed in this paper.

引用

页码：140 / 147

页数：8

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