Luminescent properties of YBO₃:Eu³⁺ nanosheets and microstructural materials consisting of nanounits

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• 作者：Guohui Pan ; Hongwei Song ; Lixin Yu ; Zhongxin Liu ; Xue Bai ; Yangqiang Lei ; Libo Fan
• 关键词：Yttrium orthoborate ; Luminescence ; Low dimension ; Nanomaterials
• 刊名：Journal of Luminescence
• 出版年：2007
• 出版时间：January-April 2007
• 年：2007
• 卷：122-123
• 期：Complete
• 页码：882-885
• 全文大小：503 K

文摘

Pure hexagonal-phased YBO₃:Eu³⁺ nanocrystals (NCs) including nanosheets (NSs), bundles of nanobelts (NBs) and quasi-spheres composed of nanotubes (NTs) were prepared by hydrothermal method. The results indicate that in NCs, there exist two symmetry sites of Eu³⁺ ions, the interior (A) and the surface (B), while there exists only one interior site (A) in the bulk. It is important to observe that the electronic transition rate of ⁵D₀-Σ_j ⁷F_J of Eu³⁺ at the surface site is improved 3–5 times than that of the interior site.