Synthesis of YVO4:Eu3+/YBO3 Heteronanostructures with Enhanced Photoluminescence Properties

被引：11
作者：
Zhu, Hongliang [1 ]
Hu, Haihua [2 ]
Wang, Zhengkai [1 ]
Zuo, Diantai [1 ]
机构：
[1] Zhejiang Sci Tech Univ, Ctr Mat Engn, Hangzhou 310018, Peoples R China
[2] Zhejiang Univ City Coll, Hangzhou 310015, Zhejiang, Peoples R China
来源：
NANOSCALE RESEARCH LETTERS | 2009年 / 4卷 / 09期
关键词：
Core/shell heteronanostructures; Nanophosphors; Photoluminescence; Yttrium vanadate; Yttrium borate; HYDROTHERMAL SYNTHESIS; NANOPARTICLES; NANOCRYSTALS; PHOSPHATE;
D O I：
10.1007/s11671-009-9349-z
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Novel YVO4:Eu3+/YBO3 core/shell heteronanostructures with different shell ratios (SRs) were successfully prepared by a facile two-step method. X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy were used to characterize the heteronanostructures. Photoluminescence (PL) study reveals that PL efficiency of the YVO4:Eu3+ nanocrystals (cores) can be improved by the growth of YBO3 nanocoatings onto the cores to form the YVO4:Eu3+/YBO3 core/shell heteronanostructures. Furthermore, shell ratio plays a critical role in their PL efficiency. The heteronanostructures (SR = 1/7) exhibit the highest PL efficiency; its PL intensity of the D-5(0)-F-7(2) emission at 620 nm is 27% higher than that of the YVO4:Eu3+ nanocrystals under the same conditions.
引用
收藏
页码：1009 / 1014
页数：6
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