Table 4. Fitting time constants of PL decay kinetics of Eu-doped ZnO QDs.

Sample	A 1 (%)	t 1 (ms)	A 2 (%)	t 2 (ms)	<t> (ms)
	±0.42	±0.015	±0.58	±0.012	±0.014
Z0.5	64.53	1.24	35.47	0.57	1.11
Z1	54.71	0.97	45.29	0.49	0.83
Z3	59.34	0.77	40.66	0.44	0.68
Z5	61.25	0.66	38.75	0.35	0.58
Z7	67.33	0.55	32.67	0.34	0.50