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Table 1 Optical properties of the (Y0.98RE0.02)2O3 nanophosphors

From: Sulfate Exchange of the Nitrate-Type Layered Hydroxide Nanosheets of Ln2(OH)5NO3·nH2O for Better Dispersed and Multi-color Luminescent Ln2O3 Nanophosphors (Ln = Y0.98RE0.02, RE = Pr, Sm, Eu, Tb, Dy, Ho, Er, and Tm)

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
  1. A summary of optical properties of the (Y0.98RE0.02)2O3 nanophosphors