Enhanced organic photovoltaic cells with MoOx nanorods as a hole transfer layer

Abstract

ABSTRACTMolybdenum oxide(MoOx) nanorods have been used as a hole transfer layer(HTL) for an organic photovoltaic(OPV) cell because it has a bandgap similar to that of PEDOT:PSS. The structure of OPV is a fluorine-doped tin oxide(FTO) / MoOx nanorod / P3HT:PCBM / ZnO / Ag. The morphology of the MoOx layer was controlled by the hydrothermal reaction time and the concentration of the precursor. The photoelectric conversion efficiency(PCE) was affected by widening the hole transfer surface between the HTL and the active layer. A device with 0.24 wt% MoOx precursor and a 20-min reaction time had a highest efficiency of 2.7%.