Abstract
Al3+ co-doped Ca2.955Sc2Si3O12:Ce3+ green phosphors were systematically investigated using X-ray absorption near-edge spectroscopy (XANES) to understand the influence of Al3+ incorporation on photoluminescence behavior. XANES analysis was used to confirm the doping site of Al atoms in the Ca2.955Sc2Si3O12:Ce3+ host, the valence state of Ce atoms, the symmetry around Ca and Ce atoms, and the bonding modes of oxygen atoms with cation atoms in the as-prepared Ca2.955Sc2-xAlxSi3O12:Ce3+ (CSAS:Ce). XANES results indicate that Al3+ occupies the Sc3+ sites and stabilizes the crystal structure of the host material. Furthermore, Al3+ can effectively inhibit the oxidization of Ce3+ to Ce4+, which enhances the photoluminescence of CSAS:Ce green phosphors.
Original language | English |
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Pages (from-to) | 4538-4543 |
Number of pages | 6 |
Journal | Ceramics International |
Volume | 41 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2015 Apr 1 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry