A novel process of preparing high-density Ag nanowire arrays in OPAA template by paired-cell deposition and photolysis


Wei Lu, Xiu-chun Yang*, Jun-wei Hou, Xiao-ning Li, Min Huang


AbstractHighly ordered silver nanowire arrays were successfully prepared by paired-cell deposition combined with photolysis process. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) were used to characterize the composition, morphology and microstructure of the nanowire arrays. The results indicate that AgBr nanowire array with an average diameter of 60 nm was firstly obtained by a simple paired cell reaction in an ordered porous anodic alumina (OPAA) template. AgBr nanowires were photolyzed into neutral Ag atoms after ultraviolet irradiation.  The light energy further caused silver atoms to vibrate and move in the pore channel of OPAA template. When the silver atoms collided, they formed larger aggregates of pure silver and finally induced the formation of Ag nanowires. Ag nanowire has diameters of 50-65 nm and a length up to several micrometers.


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