文摘
We report the growth and structural, electrical, and optical characterization of vertically oriented single-crystalline iron pyrite (FeS2) nanowires synthesized via thermal sulfidation of steel foil for the first time. The pyrite nanowires have diameters of 4鈥?0 nm and lengths greater than 2 渭m. Their crystal phase was identified as cubic iron pyrite using high-resolution transmission electron microscopy, Raman spectroscopy, and powder X-ray diffraction. Electrical transport measurements showed the pyrite nanowires to be highly p-doped, with an average resistivity of 0.18 卤 0.09 惟 cm and carrier concentrations on the order of 1021 cm鈥?. These pyrite nanowires could provide a platform to further study and improve the physical properties of pyrite nanostructures toward solar energy conversion.
Keywords:
Iron pyrite (FeS2); nanowire; semiconductor; solar energy conversion; photovoltaics; photoelectrochemistry