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

Table 2

The values of optical band gap and Urbach's energy for silver NPs in Triton X-100 before and after exposure to UV radiation for different times.

UV exposure time (min)	Optical band gap (eV)	Uncertainty	Urbach’s energy; (eV)	Uncertainty
0	3.00	±0.25	0.053	±0.006
	2.40		0.050
	2.43		0.045
	2.46		0.043
	2.50		0.060
240	2.90	±0.21	0.059	±0.006
	2.39		0.055
	2.43		0.047
	2.49		0.049
	2.50		0.062
600	2.70	±0.13	0.061	±0.0054
	2.38		0.060
	2.40		0.054
	2.47		0.050
	2.49		0.063
960	2.55	±0.08	0.063	±0.0054
	2.38		0.067
	2.37		0.061
	2.40		0.053
	2.47		0.065