Influence of Eu2+ Doped Contents on the Spectroscopic Features of Sr2-X MgSi2O7:xEu2+

Jia Zhe Guo; Ya Dong Li; Yan Lin Huang

doi:10.4028/www.scientific.net/AMR.476-478.1232

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478Influence of Eu2+ Doped Contents on the...

Influence of Eu²⁺ Doped Contents on the Spectroscopic Features of Sr_2-X MgSi₂O₇:xEu²⁺

Abstract:

Silicate-based Sr2-xMgSi2O7:xEu2+(x=0.01, 0.03, 0.05, 0.07) phosphors were synthesized by the high temperature solid-state reaction method. Phase purity and crystal structure of the phosphors were characterized using X-ray diffraction spectrometer. The optical excitation and emission spectra of Eu2+ ion were measured using luminescence spectrometer and fluorescence spectrophotometer. The emission spectra showed a strong blue luminescence peaked around 470 nm, corresponds to the 4f65d1 →4f7 transition on Eu2+. Two different average decay time confirmed that the Eu2+ cations may occupy in two different lattice sites and presents different spectroscopic features. With a broad absorption band extending from 224 to 450 nm, it is suggestive that the phosphors have a potential application in UV-LED chips (360-400 nm).

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Periodical:

Advanced Materials Research (Volumes 476-478)

Pages:

1232-1236

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.476-478.1232

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Online since:

February 2012

Authors:

Jia Zhe Guo, Ya Dong Li, Yan Lin Huang

Keywords:

Eu²⁺ Doped, Mechanism, Spectroscopic Feature, Sr_2-XMgSi₂O₇

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