Table 1.

Fluorescence lifetimes of the 543 nm Tb³⁺ and 613 nm Eu³⁺ emissions for the (Y_0.97−xTb_0.03Eu_x)₂O₃ nanoplates, τ_R (Tb³⁺) and τ_R (Eu³⁺), respectively.

x	0	0.005	0.01	0.02	0.03
τR (Tb3+) ms	3.03±0.01	2.10±0.01	1.89±0.01	1.47±0.01	1.44±0.01
τR (Eu3+) ms	–	2.56±0.01	2.33±0.01	2.27±0.01	2.04±0.01