Table 1.
Optical properties of the (Y0.98RE0.02)2O3 nanophosphors
| RE | Main PLE band (nm) | Main PL band (nm) | CIE coordinates (x,y) | Emission color | Lifetime |
|---|---|---|---|---|---|
| Pr | 280, 4f2 → 4f15d1 | 645,1D2 → 3H4 | (0.639,0.303) | Deep red | 160 ± 13 ns |
| Sm | 407, 6H5/2 → 4K11/2 | 609, 4G5/2 → 6H7/2 | (0.538,0.414) | Orange | 1.52 ± 0.01 ms |
| Eu | 250, CTB (O2- → Eu3+) | 613, 5D0 → 7F2 | (0.640,0.329) | Orange red | 2.71 ± 0.02 ms |
| Tb | 275, 4f8 → 4f75d1 | 545, 5D4 → 7F5 | (0.321,0.551) | Green | 3.08 ± 0.02 ms |
| Dy | 350, 6H15/2 → 6P7/2 | 573, 4F9/2 → 6H13/2 | (0.457,0.492) | Yellow | 229 ± 12 ns |
| Ho | 449, 5I8 → 5F1 | 551, 5S2 → 5I8 | (0.308,0.657) | Green | 126 ± 9 ns |
| Er | 380, I15/2 → 4G11/2 | 564, 4S3/2 → 4I15/2 | (0.281,0.675) | Green | 246 ± 15 ns |
| Tm | 360, 3H6 → 1D2 | 453, 1D2 → 3F4 | (0.194,0.206) | Blue | 170 ± 13 ns |
A summary of optical properties of the (Y0.98RE0.02)2O3 nanophosphors