Facile Surfactant- and Template-Free Synthesis and Luminescent Properties of One-Dimensional Lu2O3:Eu3+ Phosphors
Facile Surfactant- and Template-Free Synthesis and Luminescent Properties of One-Dimensional Lu2O3:Eu3+ Phosphors
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一维 Lu2O3:Eu3 荧光粉的简易无表面活性剂和模板合成及其发光性能
DOI：
10.1021/jp808446m
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发表时间：
2009-01-08
影响因子：
3.7
通讯作者：
Zhang, Hongjie
中科院分区：
文献类型：
--
作者：
Jia, Guang;Zheng, Yuhua;Zhang, Hongjie
在不使用任何表面活性剂、催化剂或模板剂的情况下，通过简单的水热法和随后的煅烧过程成功地制备了均匀的Lu 2 O3：Eu 3+纳米棒和纳米线。根据X射线衍射、热重分析和差示扫描量热分析以及傅里叶变换红外光谱的结果，可以推测所得前驱体的结构式为Lu 4 O（OH）9（NO3），这是一种新的物相，未见报道。用氨水溶液调节溶液pH值，前驱体的形貌可以由纳米棒向纳米线转变。所形成的前驱体可以转变为立方Lu 2 O3：Eu 3+具有相同的形貌和轻微的尺寸收缩后，退火过程。Lu 2 O3：Eu 3+纳米棒和纳米线在紫外光激发或低压电子束激发下都表现出与Eu 3+离子的5D 0 - 7 F2跃迁相对应的强红光发射。
Uniform Lu2O3:Eu3+ nanorods and nanowires have been successfully prepared through a simple solution-based hydrothermal process followed by a subsequent calcination process without using any surfactant, catalyst, or template. On the basis of X-ray diffraction, thermogravimetric analysis and differential scanning calorimetry, and Fourier transform infrared spectroscopy results, it can be assumed that the as-obtained precursors have the structure formula of Lu4O(OH)9(NO3), which is a new phase and has not been reported. The morphology of the precursors could be modulated from nanorods to nanowires with the increase of pH value using ammonia solution. The as-formed precursors could transform to cubic Lu2O3:Eu3+ with the same morphology and a slight shrinkage in size after an annealing process. Both the Lu2O3:Eu3+ nanorods and nanowires exhibit the strong red emission corresponding to the 5D0 −7F2 transition of the Eu3+ ions under UV light excitation or low-voltage electron beam excitation.