Template-free synthesis, tunable luminescent colors and energy transfer of sesame-like TbF3:Eu3+ microcrystals
Template-free synthesis, tunable luminescent colors and energy transfer of sesame-like TbF3:Eu3+ microcrystals
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DOI：
10.1016/j.materresbull.2014.01.027
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发表时间：
2014-05
影响因子：
5.4
通讯作者：
Yue Tian;Bining Tian;Baojiu Chen;C. Cui;Ping Huang;Lei Wang;Ruinian Hua
中科院分区：
文献类型：
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作者：
Yue Tian;Bining Tian;Baojiu Chen;C. Cui;Ping Huang;Lei Wang;Ruinian Hua
采用超声化学法在不添加模板剂的情况下制备了芝麻状TbF 3：Eu 3+微晶。结果表明，通过纳米薄片的组装，可以得到中心直径为250 nm，长度约为500 nm的芝麻状颗粒。在369 nm紫外光激发下，观察到Tb ~（3+）与Eu ~（3+）之间的有效能量转移。随着Eu ~（3+）离子浓度的增加，TbF_3：Eu ~（3+）微晶的发光颜色和能量转移效率可以调节。Tb ~（3+）和Eu ~（3+）之间的能量传递机制也被证实为电偶极-偶极相互作用。
Sesame-like TbF3:Eu3+microcrystals were prepared via sonochemical route without the assistance of any templates. The results suggested that the sesame-like particles with diameter of 250 nm at the center and length of about 500 nm can be obtained via assembly of thin nanosheets. The efficient energy transfer from Tb3+to Eu3+was observed under the 369 nm UV light excitation. With the increase of Eu3+ions concentration, the emission colors and energy transfer efficiency of TbF3:Eu3+microcrystals can be adjusted. The mechanism of energy transfer between Tb3+and Eu3+was also confirmed as electrical dipole–dipole interaction.