Lead Selenide Nanowires Prepared by Lithographically Patterned Nanowire Electrodeposition
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Abstract
We describe the electrochemical deposition of lead selenide (PbSe) nanowire arrays by the lithographically patterned nanowire electrodeposition (LPNE) method. The nanowires were electrodeposited using a constant potential method from an aqueous solution containing Pb2+ and HSeO3− at room temperature onto an electrode that had been photopatterned in unfiltered laboratory air. The resulting polycrystalline nanowires were stoichometric, face-centered cubic PbSe and had a rectangular cross section with lengths > 1 mm, widths between 80 and 600 nm, and heights between 40 and 80 nm. The synthesized nanowires were characterized by scanning electron microscopy (SEM), energy dispersive X-ray fluorescence (EDX), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and powder X-ray diffraction (XRD). The electrical resistivity of the nanowires is comparable to that of other PbSe nanowires.
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