Synthesis and characteristics of fine crystalline LuAG:Ce phosphors by microwave-induced solution combustion method
Synthesis and characteristics of fine crystalline LuAG:Ce phosphors by microwave-induced solution combustion method
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微波诱导溶液燃烧法合成细晶LuAG:Ce荧光粉及其性能
DOI：
10.1016/j.jlumin.2016.09.048
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发表时间：
2017
影响因子：
3.6
通讯作者：
Hongyu Gong
中科院分区：
文献类型：
--
作者：
Yanshuang Zhang;Yubai Zhang;Yujun Zhang;Hongyu Gong
采用一种新颖、快速的微波诱导溶液燃烧法制备了一系列Ce激活的LuAG：Ce荧光粉。研究了焙烧温度、金属离子/燃料比、活性离子含量和LiF助熔剂对制备的荧光粉的微观结构、形貌特征和光学性能的影响。用X射线衍射仪、差示扫描量热仪、傅立叶变换红外光谱、X射线光电子能谱、扫描电子显微镜和光致发光光谱等手段对样品的性能进行了研究。在900℃左右形成单相立方晶体LuAG：Ce。发射光谱显示Ce3+离子在460-700 nm范围内有一个特征的绿-黄带。当燃料/金属离子摩尔比为0.5时，荧光粉的发光性能最佳。所制备的LuAG：Ce粉末中Ce3+的猝灭浓度为1.0%，发射光谱随Ce3+浓度的升高而红移。结果还表明，适量的LiF显著增强了LuAG：Ce荧光粉的发光，并在3wt%时达到最大值。
A series of cerium-activated lutetium aluminum garnet (LuAG:Ce) phosphors were synthesized via a novel and fast microwave-induced solution combustion method. The influence of calcination temperature, metal ions/fuels ratio, content of active ions and LiF flux on microstructure, morphological feature and optical properties of prepared phosphors were investigated. The properties of phosphor samples were studied by means of X-ray diffraction technique, differential scanning calorimetry, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy and photoluminescence spectroscopy. Single-phase cubic crystalline LuAG:Ce formed at around 900 °C. The emission spectra displayed a characteristic broad green-yellow band of Ce3+ions in the range of 460–700 nm. The phosphors exhibited optimal luminescent properties when the fuels /metal ions molar ratio was 0.5. The quenching concentration of Ce3+in prepared LuAG:Ce powders was 1.0 mol% and the emission spectra showed a red shift at higher Ce3+concentrations. The results also revealed that an appropriate amount of LiF significantly intensified the luminescence of LuAG:Ce phosphors, and it reached the maximum at 3 wt%.
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影响因子：
4.4
作者：
BLASSE, G;BRIL, A
通讯作者：
BRIL, A
影响因子：
1.3
作者：
L. Xing;L. Qu;Q. He;T. Tang;Linfeng Yang
通讯作者：
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影响因子：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
1.8
作者：
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通讯作者：
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