Abstract
This paper presents the results of fabrication of reduced graphene oxide - Cu2S cathode to replace the Pt, CuS, PbS and Cu2S cathode electrodes in an quantum dot sensitized solar cell. The rGO-Cu2S material was fabricated by hydrolysis and printed onto the surface of the FTO substrate with a proportional change in the mass of graphene oxide and Cu2S nano, and then the film was calcined at 350 oC. The electrode structure after calcination was analyzed by X-ray diffraction spectroscopy, the particle size was determined by transmission electron microscopy, and the surface morphology was determined by scanning electron microscopy, semiconductor type is determined by Mott-Schottky measurement and the redox ability of the electrode in the polysulfide electrolyte system is evaluated by electrochemical equipment. The results show that the performance of the rGO-Cu2S cathode is better than that of the Cu2S electrode, which has been proven through the C-V measurement. This is a very positive signal for the team to continue researching to fabricate quantum dot sensitized solar cells and determining photovoltaic efficiency in further studies.
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