Research Article
Giant Improvement on the Afterglow of Sr4Al14O25:Eu2+,Dy3+ Phosphor by Systematic Investigation on Various Parameters
Table 1
The list of samples with various B contents and Eu2+ and Dy3+ values obtained from EDAX studies correlated with emission intensities.
| | Samples | Emission
maximum (nm) | Phases | Amount of
Eu2+ wt% | Amount of
Dy3+ wt% | AGL intensity
(cd·m−2) |
| | S4A7B0 (boron free) | 505 | SrAl2O4 and SrAl12O19 | 0.125% | 0.5% | 0.18 | | S4A7B0.2 (20 mol% B) | 498 | SrAl2O4 and Sr4Al14O25 | 0.134% | 0.69% | 3.09 | | S4A7B0.4 (40 mol% B) | 495 | Sr4Al14O25 | 0.146% | 0.89% | 3.31 | | S4A7B1.0 (100 mol% B) | 493 | Sr4Al14O25 and SrAl2B2O7 | 0.156% | 0.92% | 1.81 |
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