Abstract
Persistent phosphorescence of SrMg(SiO3)2:Mn,Dy was found to present two broad bands in the red and blue regions, respectively, accompanied by a 4f→4f emission from Dy3+. The red band was attributed to the Mn2+ emission, and the blue one was due to the defects induced by Dy3+. The phosphorescence of singly doped sample SrMg(SiO3)2:Dy also exhibits the blue band and Dy3+ emissions, which enable one to optically investigate the trapping mechanism in the Dy co-doped phosphors. A comparison of Mn2+ ions with the co-doped Eu2+ ions in phosphorescence emission was made to examine the behavior of Mn2+ ions in binding the delocalized carriers for the subsequent phosphorescent recombination. A reversed detrapping process was proposed to explain the phosphorescent properties of SrMg(SiO3)2:Mn,Dy.
| Original language | English |
|---|---|
| Pages (from-to) | 381-384 |
| Number of pages | 4 |
| Journal | Journal of Luminescence |
| Volume | 122-123 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - Jan 2007 |
Scopus Subject Areas
- General Chemistry
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Biophysics
- Biochemistry
Keywords
- Electron traps
- Hole traps
- Mn
- Persistent phosphorescence
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