Electrochemical preparation of CdSe nanowire arrays

We have successfully prepared CdSe nanowire arrays by direct-current electr odeposition in porous anodic aluminum oxide templates from a dimethyl sulfo xide solution containing CdCl2 and elemental Se. Electron microscopy result s show that the length, diameter, and direction of growth of the nanowires are quite uniform. X-ray energy dispersion analysis indicates that the atom ic composition of Cd and Se is very close to a 1:1 stoichiometry. Furthermo re, X-ray diffraction and high-resolution electron microscope investigation s demonstrate that the CdSe nanowires are a uniform hexagonal CdSe crystal.