Table 2. Abs peak, band gap, and size of ZnO : Eu³⁺ QDs.

Sample	Abs peak (nm)	E g (eV)	Size (nm)	1LOZnO (cm−1)	1SOZnO (cm−1)
Z0	339.1	3.61	8.86	573.11	493.34
Z0.5	340.6	3.57	9.76	571.35	486.89
Z1	341.4	3.53	10.72	570.64	481.76
Z3	342.6	3.49	11.46	569.83	478.65
Z5	345.3	3.46	12.04	567.38	472.65
Z7	347.8	3.45	12.20	566.89	466.93