Enhanced photoelectric conversion performance by morphology-controlled growth of Fe3O4 in dye-sensitized solar cells

Excellent catalytic performance is critical to renewable energy transformation. A novel conductive catalyst Fe3O4 was designed based on the different morphologies. Two different Fe3O4 particles with different morphologies, mesopore sheet (MS) and hollow mesopore flower (MF) exhibit wonderful electro-catalytic activity and power conversion efficiency (PCE) when used as counter electrodes in DSSCs. The PCE of Fe3O4 MS as CE is 6.39% and Fe3O4 MF achieves higher PCE 8.83%, which is larger than the PCE of Pt (just 7.86%).