| LiY1-xEux（MoO4）2 as a promising red-emitting phosphor of WLEDs synthesized by sol-gel process |
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| 引用本文： | 周贤菊,周桐辉,李英茂,冯乔春.LiY1-xEux（MoO4）2 as a promising red-emitting phosphor of WLEDs synthesized by sol-gel process[J].中国稀土学报(英文版),2012,30(4):315-319. |
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| 作者姓名： | 周贤菊 周桐辉 李英茂 冯乔春 |
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| 作者单位： | Department of Mathematics and Physics, Chongqing University of Posts and Telecommunications;Chongqing Zhongtian Chemical In-dustry Co. Ltd. |
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| 基金项目： | Project supported by National Natural Science Foundation of China (20903123);Key Project of Chinese Ministry of Education (211154);Natural Science Foundation Project of Chongqing (CSTC2010BA4009, KJTD201016 and CSTCjjA50006) |
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| 摘 要： | A series of LiY1-xEux(MoO4)2 red-emitting phosphors were synthesized by sol-gel technique. The phase impurity and spectroscopic properties were characterized by X-ray diffraction (XRD) and photo-luminescence (PL) spectra respectively. The effect of Eu3+ doping con-centration, annealing temperature and the molar ratio of citric acid to the total metal cations (C:M) on the optical properties of the red phos-phors were studied and optimized. It was found that all the samples could be excited efficiently by blue light (465 nm), which was well coin-cident with the emission of GaN based LED chips. The luminescent intensity reached maximum when annealing temperature was 750 ?C and Eu3+ doping concentration was 5% with C:M=3:1.
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| 关 键 词： | LiY1-xEux(MoO4)2 red phosphor white LEDs sol-gel technique rare earths |
| 收稿时间： | 8 September 2011 |
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