Electrodeposition of thin films and single-crystalline nanowires of Ag7Te4

This Letter describes an electrochemical route for deposition of Ag7Te4. Thin films of Ag7Te4 were electrodeposited on ITO substrates at −0.65 V (vs Ag/AgCl) from DMSO solutions containing 0.1 M NaNO3, 5.0 mM AgNO3, and 7.5 mM TeCl4. The deposited film consists of triangles characteristic of a (1 1 1) single-crystal with a hexagonal structure. Highly ordered and single-crystalline Ag7Te4 nanowire arrays were synthesized by this electrodeposition approach, in conjunction with template synthesis technique.