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Research Paper

Journal of the Optical Society of Korea 2014; 18(1): 45-49

Published online February 25, 2014 https://doi.org/10.3807/JOSK.2014.18.1.045

Copyright © Optical Society of Korea.

Luminescent Properties of BaSi2O5:Eu2+ Phosphor Film Fabricated by Spin-Coating of Ba-Eu Precursor on SiO2 Glass

Je Hong Park1, Jong Su Kim2, and Jong Tae Kim2

1AIDEN; 2Department of Image Science and Engineering, Pukyong National University

Received: January 9, 2014; Revised: January 16, 2014; Accepted: January 17, 2014

Abstract

Well-crystallized $BaSi_2O_5:Eu^{2+}$ phosphor films were synthesized by heat treatment of spin-coated BaO:Eu on $SiO_2$ glass. We investigated luminescence-structure properties of these phosphor films as a function of heat-treatment temperature. From x-ray diffraction patterns, our $BaSi_2O_5:Eu^{2+}$ phosphor films revealed that (111)- and (204)-crystal planes of $BaSi_2O_5$ crystal were dominantly increased with an increase of heat-treatment temperature. Photoluminescence intensities of $BaSi_2O_5:Eu^{2+}$ phosphor films were increased with amount of these crystal planes. It can be explained that $Eu^{2+}$ ions were stably occupied at specific crystal orientation of $BaSi_2O_5$ crystal, enhancing the luminescent intensities of $BaSi_2O_5:Eu^{2+}$ phosphor films. In addition, our $BaSi_2O_5:Eu^{2+}$ phosphor films had transmittance of 70% at 510 nm,.due to the dense morphology and specific crystallinity of $BaSi_2O_5:Eu^{2+}$ phosphor films.

Keywords: Phosphor film, Luminescence, Structure,

OCIS codes: 160.0160; 160.2540

Optical Society of Korea

Current Optics
and Photonics


Wonshik Choi,
Editor-in-chief

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