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 499 nm from the spin forbidden transitions of the d-electrons in Mn2+ ions. The CIE chromaticity coordinates of the Mg2SnO4:Mn 2+ phosphor are x=0.0875 and y=0.6083 under 254 nm UV excitation. The phosphorescence can be observed by the naked eyes (0.32 mcd/m2) in the dark clearly for over 5 h after the 5 min UV irradiation. Thermoluminescence has been studied and the mechanism of the long-lasting phosphorescence has been discussed.
Original language | English |
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Pages (from-to) | 173-178 |
Number of pages | 6 |
Journal | Journal of Luminescence |
Volume | 118 |
Issue number | 2 |
DOIs | |
State | Published - Jun 2006 |
Scopus Subject Areas
- Biophysics
- Atomic and Molecular Physics, and Optics
- General Chemistry
- Biochemistry
- Condensed Matter Physics
Keywords
- Afterglow
- Long-lasting phosphor
- MgSnO:Mn
- Thermoluminescence