| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5404298 | Journal of Luminescence | 2006 | 6 Pages |
Abstract
A novel long-lasting phosphorescence phosphor, Mn2+-activated Mg2SnO4, has been synthesized and its optical properties have been investigated. The Mg2SnO4:Mn2+ emits green light with high luminance, upon UV irradiation, centered at 499Â nm from the spin forbidden transitions of the d-electrons in Mn2+ ions. The CIE chromaticity coordinates of the Mg2SnO4:Mn2+ phosphor are x=0.0875 and y=0.6083 under 254Â nm UV excitation. The phosphorescence can be observed by the naked eyes (0.32Â mcd/m2) in the dark clearly for over 5Â h after the 5Â min UV irradiation. Thermoluminescence has been studied and the mechanism of the long-lasting phosphorescence has been discussed.
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Authors
Bingfu Lei, Bin Li, Xiaojun Wang, Wenlian Li,