786759.fig.0010a
(a)
786759.fig.0010b
(b)
786759.fig.0010c
(c)
Figure 10: Schematic view of the principle of spectroelectrochemical determination of the quasi-Fermi level of nanocrystalline TiO2 (a, b); for details, see the text. (c) Absorbance changes of a transparent TiO2 film at two different wavelengths recorded during a cathodic potential sweep in a deaerated LiClO4 (0.1 M) solution acidified to pH 2.9.