Picosecond-resolved fluorescence transient lifetime of ZnO 5 nm, NF and 5 nm ZnO–NF in ethanol solvent. The emission (monitored at 440 nm) was detected with 375 nm laser excitation. The values in parentheses represent the relative weight percentages of the time components.

Systems	τ 1 (ns)	τ 2 (ns)	τ 3 (ns)	τ avg (ns)
ZnO NP	0.6 (23)	4.7 (77)	—	3.7
NF	—	0.9 (46)	2.2 (54)	1.6
ZnO–NF NH	0.08 (56)	0.6 (31)	4.1 (13)	0.7