/YBO3 Heteronanostructures with Enhanced Photoluminescence Properties
نویسندگان
چکیده
Novel YVO4:Eu /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:Eu 3? nanocrystals (cores) can be improved by the growth of YBO3 nanocoatings onto the cores to form the YVO4:Eu /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 D0– F2 emission at 620 nm is 27% higher than that of the YVO4:Eu 3? nanocrystals under the same conditions.
منابع مشابه
Synthesis of YVO4:Eu3+/YBO3Heteronanostructures 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 im...
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تاریخ انتشار 2009