A novel green-yellow emitting phosphor Ca1.5Y1.5Al3.5Si1.5O12:Ce3+ and its luminescence properties

被引：10

作者：

Lu Chunyan ^{[2
]}

Jin Huaidong ^{[1
]}

Liang Xiaojuan ^{[1
]}

Xiang Weidong ^{[1
,3
]}

Zhong Jiasong ^{[3
]}

Dong Yongjun ^{[4
]}

机构：

[1] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China

[2] Huzhou Teachers Coll, Dept Chem, Huzhou 313000, Peoples R China

[3] Tongji Univ, Coll Mat Sci & Engn, Shanghai 201804, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2012年 / 30卷 / 07期

基金：

中国国家自然科学基金;

关键词：

photoluminescence; Ca1.5Y1.5-xAl3.5Si1.5O12:xCe(3+); phosphor; WLED; rare earths; PHOTOLUMINESCENCE PROPERTIES; NANOPARTICLES; CE3+;

D O I：

10.1016/S1002-0721(12)60106-9

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We described the synthesis and luminescence of Ca1.5Y1.5Al3.5Si1.5O12:Ce3+ phosphor for light emitting diode (LED). The crystallinity, morphology, structure, and luminescence spectra were examined by X-ray diffraction, field emission-scanning electron microscopy and photoluminescence spectroscopy. The results showed that Ca1.5Y1.5Al3.5Si1.5O12:Ce3+ phase was a dominating phase with little impurity phase peaks of Y2O3 when the sintered temperature reached to 1400 degrees C. Field emission scanning electron microscopy (FE-SEM) images showed the particle size of the phosphor was about 3 mu m. Meanwhile, the excitation and emission spectra indicated that the as-prepared phosphors could be effectively excited by blue (460 nm) light and the excitation spectrum showed a broad band extending from 400-500 nm, while emission spectrum showed a broad yellow band peaking at 534 nm. The decay curve at the emission peak consisted of fast and slow components. The Ca1.5Y1.5Al3.5Si1.5O12:Ce3+ should be a promising yellow phosphor for near blue-based white-light-emitting diodes (LEDs).

引用

页码：647 / 650

页数：4

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