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Nanostructure and luminescent properties of sol-gel derived europium-doped Ba2Ca(BO3)2

Published online by Cambridge University Press:  02 August 2010

S.-S. Yao ,
Y.-Y. Li ,
L.-H. Xue  and
Y.-W. Yan
S.-S. Yao
Affiliation:
State Key Laboratory of Materials Processing and Die & Mould Technology, College of Materials Science and Engineering, Huazhong University of Science & Technology, Wuhan, 430074, P.R. China
Y.-Y. Li
Affiliation:
State Key Laboratory of Materials Processing and Die & Mould Technology, College of Materials Science and Engineering, Huazhong University of Science & Technology, Wuhan, 430074, P.R. China
L.-H. Xue*
Affiliation:
State Key Laboratory of Materials Processing and Die & Mould Technology, College of Materials Science and Engineering, Huazhong University of Science & Technology, Wuhan, 430074, P.R. China
Y.-W. Yan
Affiliation:
State Key Laboratory of Materials Processing and Die & Mould Technology, College of Materials Science and Engineering, Huazhong University of Science & Technology, Wuhan, 430074, P.R. China
*
[email protected]
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Abstract

Ba2Ca(BO3)2: Eu2+ green phosphors were prepared by sol-gel process. The crystallization processes of the phosphor precursors were characterized by X-ray diffraction (XRD) and thermogravimetric analysis (TG). The photoluminescence (PL) results showed that this phosphor was efficiently excited by ultraviolet (UV)-visible light in the wavelength range from 300 to 500 nm and emitted intensely green light with a broad peak at around 520 nm, causing in to exhibit a bright green emission. The critical quenching concentration of Eu2+ in Ba2Ca(BO3)2: Eu2+ phosphor was about 0.10 mol. Based on the experimental results, it is identified that the dipole-dipole interaction in the mechanism of concentration quenching of Eu2+ in the Ba2Ca(BO3)2: Eu2+ phosphor. The CIE of the optimized sample was calculated (x, y) = (0.23, 0. 63).

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 51 , Issue 3: Focus on Flexible Organic Electronics , September 2010 , 30603
Copyright
© EDP Sciences, 2010

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