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Luminescent properties of Ba2ZnSi2O7:Eu3+ phosphors prepared by sol-gel process

Published online by Cambridge University Press:  02 October 2009

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 43007, 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 43007, 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 43007, 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 43007, P.R. China
*
[email protected]
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Abstract

A novel red phosphor Ba2ZnSi2O7:Eu3+ has been synthesized by sol-gel method. The crystallinity, particle size, morphology, chemical composition and luminescent properties were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), energy-dispersion spectrum (EDS) and spectrofluorometer, respectively. The results of thermogravimetric (TG) and XRD indicated that the Ba2ZnSi2O7:Eu3+ phosphors crystallized completely at 900 °C. The luminescent properties of phosphor showed red emission is obtained by exciting at 394 and 465 nm which are owing to the sharp 7F0 $\to$ 5L6 and 7F0 $\to$ 5D2 lines of Eu3+. Two strongest lines at 394 and 465 nm in excitation spectra of the phosphor match well with the two popular emissions from near-ultraviolet (UV) and blue GaN-based light emitting diodes (LEDs), so it could be used as red components for white LEDs.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 48 , Issue 2 , November 2009 , 20602
Copyright
© EDP Sciences, 2009

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