Reduction of graphene oxide by an in-situ photoelectrochemical method in a dye-sensitized solar cell assembly

Abstract

Reduction of graphene oxide [GO] has been achieved by an in-situ photoelectrochemical method in a dyesensitized solar cell [DSSC] assembly, in which the semiconductor behavior of the reduced graphene oxide [RGO] is controllable. GO and RGO were characterized by X-ray photoelectron spectroscopy, Raman spectroscopy, highresolution transmission electron microscope, and Fourier-transform infrared spectroscopy. It was found that the GO film, which assembled in the DSSC assembly as the counter electrode, was partly reduced. An optimized photoelectrochemical assembly is promising for modulating the reduction degree of RGO and controlling the band structure of the resulting RGO. Moreover, this method appeared to be a green progress for the production of RGO electrodes. © 2012 Chen et al.