“…[9,33,34] Interestingly,ap yrite-marcasite mixed-phase thin film performed better than ap ure pyrite film in ap hotoelectrochemical cell, invalidating the belief that marcasite is detrimental to photon conversion.T his performance of the mixed phase film was attributed to improved charge separation. Despite the setback in the solar-cell application,i ron pyrite has been evaluated in many othero ptical devices such as high-responsivity photodetectors,n ear-IR photodiodes, [33,35,36] catalyst in dye-sensitizeds olar cells (DSSCs), [37,38] photoconductors, [39] or bulk-heterojunction inorganic-organic hybrids olar cells, [40] where appropriate post treatments and custom-designed device architecturesw ere successfully employed. This illustrates that the potential of the material can be harnessed by appropriate processing and device engineering for specific applications other than purely for light absorption.…”