781236.fig.006
Figure 6: Transmittance spectra of the WO3 film filled in 1 M LiClO4 + PC solution with polarized potential ranging from −0.5 V/SCE to +0.3 V. Curves 1, 2, 3, 4, 5, 6, 7, 8, and 9 correspond, respectively, to −0.5, −0.4, −0.3, −0.2, −0.1, 0, +0.1, +0.2, and +0.3 V/SCE.