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Synthesis and Characterization of Monodispersed Rare-earth Ion Doped CeO2 Coated on SiO2 Spheres

Published online by Cambridge University Press:  01 February 2011

Pandurangan Muralidharan ,
Seung Hwan Jo ,
Hyun Wook Lee  and
Do Kyung Kim
Pandurangan Muralidharan
Affiliation:
dharan9@gmail.com, Korean Advanced Institute of Science and Technology (KAIST), Materials Science, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, South Korea, Daejeon, 305-701, Korea, Republic of
Seung Hwan Jo
Affiliation:
shjo0829@kaist.ac.kr, Korea Advanced Institute of Science and Technology (KAIST), Department of Materials Science and Engineering, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea, Republic of
Hyun Wook Lee
Affiliation:
hwlee1001@kaist.ac.kr, Korea Advanced Institute of Science and Technology (KAIST), Department of Materials Science and Engineering, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea, Republic of
Do Kyung Kim
Affiliation:
dkkim@kaist.ac.kr, Korea Advanced Institute of Science and Technology (KAIST), Department of Materials Science and Engineering, 373-1 Guseong-dong, Yuseong-gu, Daejeon, 305-701, Korea, Republic of
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Abstract

Core–shell microspheres of monodispersed SiO2 coated with rare-earth ion doped CeO2 (Eu3+ Sm3+ Dy3+) were prepared through a sol-gel method and followed by heat treatment at 800 °C for 4 h. XRD patterns revealed the crystal structures of the doped CeO2 coated on amorphous SiO2 sphere as a shell subsequent to heat treatment at 800 °C. SEM and TEM analysis indicated the microstructures of the coating and uniform size distributions of microspheres. Photoluminescence studies showed that the luminescent property had significant influence depending on different dopant ions and the thickness of the shell coated on SiO2 spheres.

Keywords

core/shellcoatingpowder processing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1074: Symposium I – Synthesis and Metrology of Nanoscale Oxides and Thin Films , 2008 , 1074-I10-36
Copyright
Copyright © Materials Research Society 2008

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