Microwave-assisted solvothermal preparation and photoluminescence properties of Y2O3:Eu3+ phosphors
Microwave-assisted solvothermal preparation and photoluminescence properties of Y2O3:Eu3+ phosphors
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DOI：
10.1016/j.ceramint.2011.09.044
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发表时间：
2012-03
影响因子：
5.2
通讯作者：
Fujun Liu;Chia-Hao Hsu;Fu-shan Chen;Chung‐Hsin Lu
中科院分区：
文献类型：
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作者：
Fujun Liu;Chia-Hao Hsu;Fu-shan Chen;Chung‐Hsin Lu
采用快速微波辅助溶剂热法合成了铕掺杂氧化钇荧光粉。合成Y2O3:Eu3+粉末前驱体的微波处理时间短至5分钟。经600℃煅烧后，得到结晶良好的Y2O3:Eu3+纯相。沉淀粉末的形貌为球形并且由纳米尺寸的颗粒组成。随着微波辐射时间的增加，球形粉末的平均粒径增大，热处理粉末的结晶度也增强。合成的粉末在热处理后保留了球形形态。 611 nm 处的强烈红光发射归因于 Eu3+ 的 5D0–7F2 跃迁。
Europium doped yttrium oxide phosphors were synthesized by a rapid microwave-assisted solvothermal method. The microwave processing time for synthesizing the precursors of Y2O3:Eu3+powders was as short as 5min. After calcination at 600°C, a well-crystallized pure phase of Y2O3:Eu3+was obtained. The morphology of the precipitated powders was spherical and composed of nano-sized grains. As the microwave irradiation time was increased, the average particle size of the spherical powders increased, and the crystallinity of heat-treated powders was also enhanced. The synthesized powders retained the spherical morphology after heating treatments. An intense red emission at 611nm was assigned to the5D0–7F2transition of Eu3+.