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ISSN : 1225-0562(Print)
ISSN : 2287-7258(Online)
Korean Journal of Materials Research Vol.23 No.12 pp.727-731
DOI : https://doi.org/10.3740/MRSK.2013.23.12.727

Synthesis of BaSrSiO4 Phosphors by Solid State Reaction and Its Luminescent Properties

Kang, Joo Young, Won, Hyeong Il, Won, Chang Whan

Abstract

In this study, green barium strontium silicate phosphor (BaSrSiO4:Eu3+, Eu2+) was synthesized using a solid-statereaction method in air and reducing atmosphere. Investigation of the firing temperature indicates that a single phase of BaSrSiO4is formed when the firing temperature is higher than 1400oC. The effect of firing temperature and doping concentration onluminescent properties are investigated. The light-emitting property was the best when the molar content of Eu2O3 was 0.025mol. Also, the luminescent brightness of the BaSrSiO4 fluorescent substance was the best when the particle size of the bariumwas 0.5µm. BaSrSiO4 phosphors exhibit the typical green luminescent properties of Eu3+ and Eu2+. The characteristics of thesynthesized BaSrSiO4:Eu3+, Eu2+ phosphor were investigated using X-ray diffraction (XRD) and scanning electron microscopy.The maximum emission band of the BaSrSiO4:Eu3+, Eu2+ was 520nm.

고상법에 의한 BaSrSiO4 형광체의 분말합성 및 발광특성

강주영, 원형일, 원창환

초록