Table 1.

PL lifetimes and pre-exponential factors of fresh Tulsi extract, quercetin and AgNPs contained solution.

Sample	τ1 (ns)	τ2 (ns)	τ3 (ns)	α1	α2	α3	χ2	τav (ps)
Tulsi extract	0.09	1.95	7.61	0.94	0.03	0.03	1.19	371
Neat quercetin	0.09	2.05	12.09	0.93	0.05	0.02	1.27	428
AgNPs(Tulsi extract)	0.07	1.65	8.18	0.95	0.03	0.02	1.23	279
AgNPs (Quercetin)	0.73	2.99	9.18	0.80	0.17	0.03	1.16	136