Iron oxide nanostructures as highly efficient heterogeneous catalysts for mesoscopic photovoltaics†
Abstract
Fe3O4 with hierarchical structures was successfully synthesized and introduced into dye-sensitized solar cells as the counter electrode. A power conversion efficiency of 7.65% based on Fe3O4 was achieved, which is superior to that of pyrolytic Pt (6.88%) and close to that for sputtered Pt (7.87%).