Synthesis and Luminescence Properties of Blue Phosphors Sr3MgSi2O8:Eu2+ by Gel-Combustion Method

Yong Qing Zhai; Ya Hong Liu; Zhi Jiang You; Jing Qiao; Man De Qiu

doi:10.4028/www.scientific.net/AMR.396-398.482

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 396-398Synthesis and Luminescence Properties of Blue...

Synthesis and Luminescence Properties of Blue Phosphors Sr₃MgSi₂O₈:Eu²⁺ by Gel-Combustion Method

Abstract:

Blue-emitting phosphors Sr₃MgSi₂O₈:Eu²⁺ with high brightness were prepared by gel-combustion method under weak reductive atmosphere. The as-synthesized phosphors were investigated by X-ray diffraction analysis (XRD), scanning electron microscope (SEM) and Fluorescence spectrophotometer. The results indicate that Sr₃MgSi₂O₈:Eu²⁺ phosphors have orthorhombic crystal structure. The excitation spectrum is a broad band and with two peaks at around 414 nm and 400 nm respectively. The emission spectrum is also a broad band, and the emission peak is at about 460 nm. It’s ascribed to typical transition from 4f5d to 4f of Eu²⁺. Besides, it is found that the dosage of urea, the reductive temperature and time, etc. have great effects on luminescence intensity of Sr₃MgSi₂O₈:Eu²⁺ phosphors. The optimum process conditions were confirmed.

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Advanced Materials Research (Volumes 396-398)

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482-485

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.396-398.482

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Online since:

November 2011

Authors:

Yong Qing Zhai, Ya Hong Liu, Zhi Jiang You, Jing Qiao, Man De Qiu

Keywords:

Emission Spectrum, Excitation Spectrum, Gel-Combustion Method, Luminescence, Sr₃MgSi₂O₈:Eu²⁺

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