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Synthesis of Eu-doped (Gd,Y)2O3 transparent optical ceramic scintillator

Published online by Cambridge University Press:  03 March 2011

Young Kwan Kim ,
Ho Kyung Kim ,
Do Kyung Kim  and
Gyuseong Cho
Young Kwan Kim
Affiliation:
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Kusong-dong, Yusong, Taejon 305-701, Korea
Ho Kyung Kim
Affiliation:
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Kusong-dong, Yusong, Taejon 305-701, Korea
Do Kyung Kim*
Affiliation:
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Kusong-dong, Yusong, Taejon 305-701, Korea
Gyuseong Cho
Affiliation:
Department of Quantum and Nuclear Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Kusong-dong, Yusong, Taejon 305-701, Korea
*
b)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A novel process for transparent oxide ceramic scintillator with a composition of Gd1.94-x Yx Eu0.06O3 was developed. The process consists of a glycine–nitrate combustion synthesis of nano-sized starting powder and subsequent controlled sintering and annealing steps. The organic molecules remaining in the as-combusted powder were efficiently removed by the combined heat-treatment at vacuum and air atmospheres. Hot-pressed ceramic scintillators show transparent optical state and high light output. Transparent optical ceramic scintillator with a high content of Gd (up to 80 mol%) was fabricated by the process. The measured light output of Gd1.54Y0.4Eu0.06O3 ceramic scintillator was about two times higher that that of CdWO4 single crystal.

Keywords

CeramicCombustion synthesisLuminescence
Type
Rapid Communications
Information
Journal of Materials Research , Volume 19 , Issue 2 , February 2004 , pp. 413 - 416
Copyright
Copyright © Materials Research Society 2004

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