A rapid microwave-assisted synthesis for nearly monodisperse CuInS₂/ZnS nanocrystals (NCs) has been developed. CuInS₂/ZnS NCs have been prepared in water using thioglycolic acid as a stabilising ligand. The proposed synthesis results in stable and monodisperse NCs after only 5 minutes. In addition, the NCs were tested as potential sensitisers for photoanodes.