Enhancement of Fluorescence and Photostability Based on Interaction of Fluorescent Dyes with Silver Nanoparticles for Luminescent Solar Concentrators

Table 3

The values of optical band gap and Urbach’s energy for Coumarin 6, Fluorescein, and Rhodamine 6G in Triton X-100 with and without silver NPs before and after exposure to UV irradiation.

Dyes	Before adding silver			After adding silver
Coumarin 6		2.56	0.066		2.47	0.073
	min with filter	2.51	0.069	min with filter	2.47	0.075
	min without filter	2.49	0.071	min without filter	2.43	0.077
Fluorescein		2.30	0.039		2.27	0.051
	min with filter	2.29	0.041	min with filter	2.27	0.052
	min without filter	2.28	0.042	min without filter	2.26	0.054
Rhodamine 6G		2.19	0.044		2.16	0.062
	min with filter	2.18	0.045	min with filter	2.16	0064
	min without filter	2.17	0.046	min without filter	2.15	0.067