Synthesis and Characterization of Monodispersed SiO2@Y3Al5O12:Er3+ Core-Shell Particles |
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| Authors: | Cheng-Ning Xie Zhong-Min Yang Yan-Hui Sun |
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| Institution: | (1) Key Lab of Specially Functional Materials of Ministry of Education and Institute of Optical Communication Materials, South China University of Technology, Guangzhou, 510641, People’s Republic of China;(2) School of Environment and Chemistry, South China Normal University, Guangzhou, 510006, People’s Republic of China |
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| Abstract: | Submicron core-shell structure particles SiO2@Y3Al5O12:Er3+, which silica spherical particles was coated with an yttrium aluminum garnet (Y3Al5O12) layer doped with Er3+, were prepared by the modified Pechini-Type sol-gel method for the first time. The structure and morphology of samples were
detected by the X-ray powder diffraction (XRD) measurement, field emission scanning electron microscopy (FESEM) and transmission
electron microscopy (TEM), respectively. The results indicate that well-crystallized garnet nanocrystallines were formed on
the surface of the silica particles. The luminescent spectra in near infrared and visible region of the core-shell structured
SiO2@Y3Al5O12:Er3+ powders were also investigated and compared with those of the pure Y3Al5O12:Er3+ and the Er3+ doped silicate glass. The results show that mono-dispersed SiO2@Y3Al5O12:Er3+ core-shell spherical particles with the near infrared, red and green luminescent emissions under the excitation of 980 nm
laser diode have been successfully synthesized. |
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| Keywords: | Y3Al5O12:Er3+ Core-shell Morphology Luminescence |
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