abstract:Conductive iridium dioxide (IrO2) nanorods have been successfully grown on the Si(1 0 0) substrates via metalorganic chemical vapor deposition (MOCVD). A wedge-shaped morphology and naturally formed sharp tips are observed for IrO2 nanorods using field-emission scanning electron microscopy (FESEM). High-resolution transmission electron microscopy (TEM) image and electron diffraction pattern show the growth of IrO2 nanorods preferentially along c-axis. Structure and composition of IrO2 nanorods have also been characterized using the techniques of Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. It is noted that the IrO2 nanorods are self-mediated instead of the conventional vapor–liquid–solid (VLS) approach or catalyst-mediated method.