Photoelectric conversion property of covalent-attached multilayer self-assembled films fabricated from diazoresin and fullerol

A novel self-assembly multilayer film was fabricated from fullerenol (C-60(ONa)(n)) and diazoresin (DR)-a photosensitive polymer on indium-tin-oxide substrate. The film shows good stability after UV irradiation and has photoelectric conversion property, which can be measured in a conventional photoelectrochemical cell. The cathodal photocurrent was measured to be about 800 nA/cm(2) for a nine-layer film at 100 mW/cm(2) white light. The photocurrent spectroscopy responses coincide with the absorption spectrum of the self-assembly film, which means that the C-60(ONa)(n)/DR film is responsible for the photocurrent generation.