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Open Access Nano Express

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

Chen Chen, Mingce Long*, Min Xia, Chunhua Zhang and Weimin Cai

Author affiliations

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Dongchuan Road 800, Shanghai 200240, People's Republic of China

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Citation and License

Nanoscale Research Letters 2012, 7:101  doi:10.1186/1556-276X-7-101

Published: 2 February 2012

Abstract

Reduction of graphene oxide [GO] has been achieved by an in-situ photoelectrochemical method in a dye-sensitized 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, high-resolution 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.

Keywords:
graphene oxide; reduction; photoelectrochemical; J-V curve; dye-sensitized solar cells