Abstract
The synthesis of uniform PbOx-Fe2O3 nanoparticles (NPs) was carried out and mixed with commercial P25 titanium dioxide (TiO2) to fabricate a composite photoanode for enhancing adsorption and dye loading capabilities in dye-sensitized solar cells (DSSCs). The resulting composite photoanode exhibited a broader absorption band than the photoanode composed solely of pure TiO2. Amongst the different concentrations of PbOx-Fe2O3 NPs tested, the composite photoanode containing 0.1 wt% of NPs demonstrated the highest power conversion efficiency of 5.03%. It was noticed that the resistive loss was reduced in the composite photoanode, which is beneficial for minimizing energy losses within the device. However, the presence of conductive paths introduced by the NPs increased recombination and current leakage losses. A trade-off between these two types of losses needs to be carefully managed to maximize the overall performance of the DSSCs.
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