Preparation, structural and luminescent properties of Ba2Gd2Si4O13:Eu3+ for white LEDs
Preparation, structural and luminescent properties of Ba2Gd2Si4O13:Eu3+ for white LEDs
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白光LED用Ba2Gd2Si4O13:Eu3的制备、结构及发光性能
DOI：
10.1364/oe.19.00a201
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发表时间：
2011-03-14
期刊：
影响因子：
3.8
通讯作者：
Zhang, LiHong
中科院分区：
文献类型：
--
作者：
Guo, Hai;Zhang, Hao;Zhang, LiHong
为了寻找适用于白色发光二极管（LED）的高效红色荧光粉，采用传统的固相反应法制备了Ba 2Gd 2Si 4 O 13：Eu 3+荧光粉。研究了Li 2CO 3助熔剂和Eu 3+掺杂浓度对Ba 2Gd 2Si 4 O 13荧光粉结构和发光性能的影响。在393 nm激发下，该荧光粉在近紫外-蓝光区有强烈的吸收，并具有较强的红光发射，其CIE坐标为（0.66，0.34）。Ba-2（Gd0.4Eu0.6）（2）Si 4 O 13在393 nm、362 nm和464 nm激发下的积分发光强度分别约为Y2 O3：Eu 3+商业荧光粉的3.5、4.0和3.1倍。其优异的发光性能和良好的色饱和度使其成为白色LED的理想红色荧光粉。(C)2011年美国光学学会
To find out efficient red phosphors used for white light-emitting diodes (LEDs), a new Ba2Gd2Si4O13:Eu3+ phosphor was prepared by conventional solid-state reaction method. The effect of Li2CO3 flux and Eu3+ doping concentrations on structural and luminescent properties of Ba2Gd2Si4O13 phosphors was studied in detail. The phosphors show intense absorption in near ultraviolet-blue region and exhibit intense red emissions with CIE coordinates of (0.66, 0.34) under 393 nm excitation. The integrated emission intensity of Ba-2(Gd0.4Eu0.6)(2)Si4O13 excited at 393 nm, 362 nm and 464 nm is about 3.5, 4.0 and 3.1 times as that of Y2O3:Eu3+ commercial phosphors, respectively. The excellent luminescent properties and good color saturation make it a promising red phosphor for white LEDs. (C) 2011 Optical Society of America