| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7999559 | Journal of Alloys and Compounds | 2015 | 4 Pages |
Abstract
SrAl2O4: Pr3+ phosphors were successfully prepared by the high-temperature solid-phase method. The structure and photoluminescence properties of different Pr3+ concentrations doped SrAl2O4: Pr3+ were investigated by X-ray diffraction (XRD) and fluorescence spectrophotometer, respectively. Moreover, the role of Li+ ions as charge compensation for SrAl2O4: Pr3+ was also studied in detail. To better understand the fluorescent mechanism of SrAl2O4: Pr3+ phosphors, a complete 91Â ÃÂ 91 Hamiltonian energy matrix was built by an effective operator Hamiltonian including free ion and crystal-field interactions. The fluorescent spectrum for Pr3+ ions at Sr2+ sites of SrAl2O4 crystal was successfully studied from a complete diagonalization (of energy matrix) method of 4f2 electron configurations. The theoretical values are in agreement with the observed data.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Xu Feng, Wenlin Feng, Ke Wang,