Photoelectrochemical properties of the SnO2 nanoporous film sensitized by cyanine dye

A new cyanine dye (abbr. PMC in the following) was synthesized and was used to sensitize SnO2 nanostructured porous film studied in this article. The structure of PMC determined by NMR and element analytical technique is [GRAPHICS] The photocurrent action spectra, the photocurrent-potential curves, the photocurrent transients and the UV-Vis absorption curves were measured with the unsensitized and sensitized elelctrodes. The positions of electron ground state and electron excited state of PMC were determined by cyclic voltammetry and UV-Vis spectroscopy. Subsequently, the mechanism of photo-induced current was studied preliminarily.