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

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Author(s): Zhu Hongliang | Hu Haihua | Wang Zhengkai | Zuo Diantai

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 4;
Issue: 9;
Start page: 1009;
Date: 2009;
Original page

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

ABSTRACT
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 the5D0–7F2emission at 620 nm is 27% higher than that of the YVO4:Eu3+nanocrystals under the same conditions.

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