Effect of Reduced Graphene Oxide Depositing on n-Cu2O for Solid State Photovoltaic Cell

Abstract

A low cost solid state photovoltaic cell made with a simple preparation method of Cu2O and deposition of reduce graphene oxide (rGO) on Cu2O. The graphene oxide was prepared by modified Hummer’s method and deposition of rGO was done by the electrophoretic deposition (EPD) technique on a well cleaned copper substrate. There after Cu/ rGO substrate was boiled in a CuSO4 (0.05M) for 60 minutes to fabricate Cu/ rGO/ nCu2O. Finally the Cu/ rGO/ n-Cu2O was sealed with a conductive glass plate (ITO) to fabricate the solar cell. Photocurrent enhancement was observed in Cu/ rGO/ nCu2O/ ITO when comparing the Cu/ n-Cu2O/ ITO photoelectrode. Diffuse reflectance spectra, FT-IR, I-V curves were used to explain the photocurrent enhancement of the solar cell. The maximum power efficiency was observed as 1.4% was observed after introducing rGO for the Cu/ n-Cu2O and remarkable stability was observed in the solar cell.