Structural Modification of Sol-Gel Synthesized V₂O₅ and TiO₂ Thin Films with/without Erbium Doping

Figure 3

(a) Optical transmittance spectra, (b) Tauc plots of the films deposited on ITO coated glass substrates. The inset in (a) demonstrated the absorption measurement whereas in (b) resumed Tauc plot for Er-doped films.

(a)

(b)