| A novel green-yellow emitting phosphor Ca1.5Y1.5Al3.5S1.5O12：Ce^3＋ and its luminescence properties |
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| 引用本文： | 吕春燕,金怀东,梁晓娟,向卫东,钟家松,董永军.A novel green-yellow emitting phosphor Ca1.5Y1.5Al3.5S1.5O12：Ce^3＋ and its luminescence properties[J].中国稀土学报(英文版),2012(7):647-650. |
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| 作者姓名： | 吕春燕 金怀东 梁晓娟 向卫东 钟家松 董永军 |
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| 作者单位： | [1]Department of Chemistry, Huzhou Teachers College, Huzhou 313000, China [2]College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China [3]College of Materials Science and Engineering, Tonal University, Shanghai 201804, China [4]Shanghai Institute of Optics and Fine Mechanics, Chi- nese academy sciences, Shanghai 201800, China |
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| 基金项目： | Project supported by National Natural Science Foundation of China （51172165）, Key Foundation of Zhejiang Province Natural Science Foundation （Z4110347）, Zhejiang Province Key Technology Innovation Team （2009R50010）, Wenzhou Municipal Science and Technology Bureau Key Program （G20090082）, and Huzhou Municipal Natural Science Foundation （2011YZ02） |
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| 摘 要： | We described the synthesis and luminescence of Ca1.5Y1.5Al3.5Si1.5O12:Ce3+ phosphor for light emitting diode (LED). The crystal-linity, 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 oC. Field emission scanning electron microscopy (FE-SEM) images showed the particle size of the phosphor was about 3 μm. 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).
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| 关 键 词： | photoluminescence Ca1.5Y1.5-xAl3.5Si1.5O12:xCe3+ phosphor WLED rare earths |
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