Enhanced Photoluminescence of YInGe2O7:Eu3+,Li+ Phosphor Prepared Using the Solid-State Method

Huang Yu Chen; Ru Yuan Yang; Shoou Jinn Chang

doi:10.4028/www.scientific.net/AMR.684.274

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 684Enhanced Photoluminescence of YInGe2O7:Eu3+,Li+...

Enhanced Photoluminescence of YInGe₂O₇:Eu³⁺,Li⁺ Phosphor Prepared Using the Solid-State Method

Abstract:

A Eu³⁺ activated YInGe²O⁷phosphor was synthesized by solid-state reaction and lithium carbonate was added to change the morphology and photoluminescence properties. Scanning electron microscopy showed large particle size and necking shape were obtained as the concentrations of Li⁺ ions increase. In the PL studies, the excitation spectrum of YInGe²O⁷:Eu³⁺ phosphors exhibited a broad band in the UV region centered at about 272 nm attributed to charge transfer state (CTS) band, which has a little shift after Li⁺ ion was added. As the Li⁺ ion concentration increased, the photoluminescence intensity of the red emission at 620 nm of Eu³⁺ ions was enhanced, and the optimized concentration of of added Li⁺ ion is 0.05. The results showed that addition of Li⁺ ion allows YInGe²O⁷:Eu³⁺ phosphors emitting relatively pure red light.

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Advanced Materials Research (Volume 684)

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274-278

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https://doi.org/10.4028/www.scientific.net/AMR.684.274

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Online since:

April 2013

Authors:

Huang Yu Chen, Ru Yuan Yang, Shoou Jinn Chang

Keywords:

Luminescence, Phosphor, Sintering, YInGe₂O₇

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