Novel microwave synthesis of near-metallic copper sulfide nanodiscs with size control: experimental and DFT studies of charge carrier density.

A simple unprecedented microwave synthesis of size controllable copper sufide (CuS) nanodiscs is reported. The experimental results and density functional theory (DFT)-calculated results show charge carrier densities on the order of 10 21 cm -3 with an effective mass of 0.3 m e , resulting in near-metallic properties.