Table 3.

Band gap energy, Urbach energy and electron-phonon interaction of PVC-PS, PVC-PS-SiO₂ 5% and PVC-PS-SiO₂ 10% thin films.

Parameter	Symbol	PVC-PS	PVC-PS-5%silica	PVC-PS-10%silica
Average Thickness (nm)	$d$	300	300	300
Thickness determined using our model (nm)	d	292.597	306.035	302.351
Band gap energy from Tauc plot (eV)	$E_{g,Tauc}$	3.993	4.002	4.003
Band gap energy from our model (eV)	$E_g$	3.835	3.961	4.133
Urbach energy (meV)	$E_U$	356	1067	1066
Steepness parameter (eV−1)	$\sigma$	0.0726	0.0242	0.0243
Electron-phonon interaction (eV)	$E_{e-p}$	9.183	27.548	27.435