npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041
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Research Paper

New Physics: Sae Mulli 2013; 63: 945-949

Published online August 30, 2013 https://doi.org/10.3938/NPSM.63.945

Copyright © New Physics: Sae Mulli.

Photoluminescence Properties of (Ca0.96-xBax)MoO4:Eu0.043+

Sang Min LEE, Tae Hyun KIM, Je Woong HWANG, Soung Soo YI*

Department of Materials Science Engineering. Silla University, Busan 617-736, Korea

Correspondence to:ssyi@silla.ac.kr

Abstract

The conventional solid-state reaction method has been used to synthesize (Ca0.96-xBax)MoO4:Eu0.043+ phosphors. The effects of the host materials and changes in the sintering temperature on the microstructures of the (Ca0.96-xBax)MoO4:Eu0.043+ phosphors were measured by using X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). The luminescent characteristics were characterized by using photoluminescence excitation (PLE) and emission (PL) measurements. The dependences of various optical and morphological properties of the prepared materials on the host materials and on changes in the sintering temperature are discussed. Incorporation of Ba2+ ions into the (Ca0.96-xBax)MoO4:Eu0.043+ phosphors changed the crystallinity, the particle size and, hence, the luminescence properties, and the optimum concentration in the case of Ba2+ ions was found to be 0.25 mol. The photoluminescence intensity changed when the host materials and the sintering temperatures were changed.

Keywords: (Ca0.96-xBax)MoO4:Eu0.043+, Crystallinity, Surface Morphology, Red Phosphor, Photoluminescence

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