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Open Access Nano Express

Synthesis of YVO4:Eu3+/YBO3Heteronanostructures with Enhanced Photoluminescence Properties

Hongliang Zhu1*, Haihua Hu2, Zhengkai Wang1 and Diantai Zuo1

Author affiliations

1 Center of Materials Engineering, Zhejiang Sci-Tech University, Xiasha University Town, 310018, Hangzhou, China

2 Zhejiang University City College, 310015, Hangzhou, China

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Citation and License

Nanoscale Research Letters 2009, 4:1009-1014  doi:10.1007/s11671-009-9349-z

Published: 29 May 2009

Abstract

Novel YVO4:Eu3+/YBO3core/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 YBO3nanocoatings onto the cores to form the YVO4:Eu3+/YBO3core/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 the5D07F2emission at 620 nm is 27% higher than that of the YVO4:Eu3+nanocrystals under the same conditions.

Keywords:
Core/shell heteronanostructures; Nanophosphors; Photoluminescence; Yttrium vanadate; Yttrium borate