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1. 汕头大学物理系,广东 汕头,515063
2. 广东工业大学 物理与光电工程学院, 广东 广州 510000
纸质出版日期:2010-9-21,
网络出版日期:2010-9-21,
收稿日期:2009-7-7,
修回日期:2009-10-16,
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许潮发, 刘晓华. SnO<sub>2</sub> ∶ Eu<sup>3+</sup> 纳米晶的水热法制备及发光性能[J]. 发光学报, 2010,31(5): 701-705
XU Chao-fa, LIU Xiao-hua. Hydrothermal Synthesis and Photoluminescent Properties of SnO<sub>2</sub> ∶ Eu<sup>3+</sup> Nanocrystals[J]. 发光学报, 2010,31(5): 701-705
采用水热法制备了Eu
3+
掺杂SnO
2
纳米发光粉
样品在不同温度下热处理得到不同粒径尺寸的纳米颗粒。利用X射线衍射(XRD)与光致发光(PL)谱对样品进行表征。XRD分析表明:SnO
2
∶ Eu
3+
样品均为纯相 金红石结构。PL测量表明:水热法直接制备的样品的激发谱由Eu
3+
的f-f本征激发峰组成
而经过热处理后样品的激发谱由O
2-
-Eu
3+
电荷迁移带和Eu
3+
的f-f本征激发组成;样品的发光强度与颗粒大小有密切关系。
SnO
2
∶ Eu
3+
nanocrystals with different sizes in the ranges of 4 nm to 11 nm were prepared by hydrothermal method. X-ray diffraction (XRD) and photoluminescence (PL) measurements were used to characte-rize the sample. XRD showed that the samples structure kept pure rutile phase of SnO
2
. The excitation spectrum of the sample prepared without sintering only consisted of the intra shell f-f transitions of Eu
3+
ions. The excitation spectra of the samples sintered at different temperature contained the intra shell f-f transitions of Eu
3+
ions and the O
2-
-Eu
3+
charge transfer band. The emission intensities of the samples were closely related to the sizes of nanocrystals.
SnO2 ∶ Eu3+光致发光水热法
SnO2 ∶ Eu3+photoluminescencehydrothermal
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