Abstract
BaMg 2Al 6Si 9O 30:Eu 2 phosphors are synthesized by the solid-state reaction method and their photoluminescence (PL) properties are investigated. The ultraviolet emission originates from Eu 2(I) substituting for Ba 2 sites, whereas the blue emission is attributed to Eu 2(II) substituting for Mg 2 sites. With increasing Eu 2 doping concentrations, the blue emission band shifts to long wavelength and the PL intensity ratio of blue to ultraviolet emission increases. Energy transfer between the two different Eu 2 ions is analyzed by photoluminescence excitation and emission spectra, and lifetimes. Results indicate that the emission spectra can be tuned by changing Eu 2 contents. We have also demonstrated that BaMg 2Al 6Si 9O 30:Eu 2 phosphor is a kind of potential phosphor for fluorescent lamps.
Original language | English |
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Pages (from-to) | 2439-2442 |
Number of pages | 4 |
Journal | Journal of Luminescence |
Volume | 132 |
Issue number | 9 |
DOIs | |
State | Published - Sep 2012 |
Scopus Subject Areas
- Biophysics
- Atomic and Molecular Physics, and Optics
- General Chemistry
- Biochemistry
- Condensed Matter Physics
Keywords
- Energy transfer
- Fluorescent lamp
- Phosphor