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A facile and rapid electrodeposition route was developed to controllably synthesize well-aligned Zn O nanorod arrays on diverse substrates, such as seed-layer pre-formed, pristine indium tin oxide(ITO) and Si, using Zn(NO3)2$6H2O and hexamethylenetetramine(HMT) as the precursors. X-ray diffraction(XRD) and transmission electron microscopy(TEM) results indicated that seed-layer pre-modified of Zn O nanorod arrays(ZNRs) possessed single crystalline, a wurtzite crystal structure with preferential growth orientation along[0001] direction. The ZNRs on pre-modified Zn O seed-layer(ZSL) had diameters of 30e50 nm, and aligned vertically to the substrates. ZNRs on ZSL/ITO substrate exhibited a high transmittance(above 80%) in visible wavelength range and the red-shift of band gap energy. An electrochemical reaction model was proposed to explain the growth process of Zn O nanorods. Importantly, the rapid synthesis of ZNRs provided the feasibility of preparation of SERS(surface enhanced Raman scattering) nanocomposite within shorter time by a subsequent electrochemical etching.
A facile and rapid electrodeposition route was developed to controllably synthesize well-aligned Zn O nanorod arrays on diverse substrates such as seed-layer pre-formed, pristine indium tin oxide (ITO) and Si, using Zn (NO3) X-ray diffraction (XRD) and transmission electron microscopy (TEM) results indicated that seed-layer pre-modified of Zn O nanorod arrays (ZNRs) possessed single crystalline, a wurtzite crystal structure with preferential growth The ZNRs on pre-modified Zn O seed-layer (ZSL) had diameters of 30e50 nm, and aligned vertically to the substrates. ZNRs on ZSL / ITO substrate exhibited a high transmittance (above 80%) in visiblely the wavelength range and the red-shift of band gap energy. An electrochemical reaction model was proposed to explain the growth process of Zn O nanorods. Importantly, the rapid synthesis of ZNRs provided the feasibility of preparation of SERS (surface enhanced Raman sca ttering) nanocomposite within shorter time by a subsequent electrochemical etching.