Synthesis of YVO(4):Eu/YBO(3) Heteronanostructures with Enhanced Photoluminescence Properties.
Novel YVO(4):Eu(3+)/YBO(3) 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 YVO(4):Eu(3+) nanocrystals (cores) can be improved by the growth of YBO(3) nanocoatings onto the cores to form the YVO(4):Eu(3+)/YBO(3) 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 (5)D(0)-(7)F(2) emission at 620 nm is 27% higher than that of the YVO(4):Eu(3+) nanocrystals under the same conditions.
Zhu
Hongliang
H
Hu
Haihua
H
Wang
Zhengkai
Z
Zuo
Diantai
D