| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5437260 | Ceramics International | 2017 | 30 Pages |
Abstract
Crystal structures of Sr1-xCaxLaMgSbO6:Eu3+ phosphors were studied in detail. Both the SrLaMgSbO6 and the CaLaMgSbO6 have a monoclinic (P21/n) structure. With increasing the Ca2+ concentration, the peaks gradually divided and the phase changed from SrLaMgSbO6 to CaLaMgSbO6. The symmetry of La3+ in SrLaMgSbO6 is lower than that in CaLaMgSbO6. Eu3+ ions, as the structural probes, were selected to study the structure. Lifetimes and intensity ratio were used to study the symmetry in the structure. Thermal quenching of the phosphors was discussed from 323Â K to 473Â K. The emission intensities of 5D1â7FJ and 5D0â7FJ damped in different ratios while increasing temperature. The configurational coordinate diagram was used to explain this interesting phenomenon.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Quan Liu, Lixi Wang, Wentao Huang, Xibing Li, Mingxun Yu, Qitu Zhang,