The Reduced Recombination and the Enhanced Lifetime of Excited Electron in QDSSCs Based on Different ZnS and SiO₂ Passivation

Table 1

The parameters obtained from UV-Vis.

Sample	Wavelength of absorption edge (nm)	Eg (eV)	ECB (eV)	EVB (eV)
TiO2	443	2.80	−4.3	−7.5
TiO2/CdS	490	2.53	−4.11	−6.64
TiO2/CdSe	575	2.16	−4.3	−6.4
TiO2/CdS/CdSe/ZnS	594	2.09	—	—
TiO2/CdS/CdSe/SiO2	679	1.83	—	—