Synthesis and characterization of monodispersed SiO2@Y3Al5O12:Er3+ core-shell particles.
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.
Xie
Cheng-Ning
CN
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.
Yang
Zhong-Min
ZM
Sun
Yan-Hui
YH
D000535:Aluminum / Q000737:chemistry*; D004871:Erbium / Q000737:chemistry*; D008163:Luminescent Measurements; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D010100:Oxygen / Q000737:chemistry*; D010316:Particle Size; D012822:Silicon Dioxide / Q000138:chemical synthesis* / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D014961:X-Ray Diffraction; D015019:Yttrium / Q000737:chemistry*
D015019:Yttrium; D012822:Silicon Dioxide; D004871:Erbium; D000535:Aluminum; D010100:Oxygen