Low-temperature colloidal synthesis of CuBiS2 nanocrystals for optoelectronic devices

Abstract

A new facile colloidal synthesis of CuBiS₂ (CBS) nanocrystals with monodispersed size and good quality has been developed. The CBS nanocrystal films were deposited by solid-state ligand exchange and their field effect transistor and photoconductive characteristics were characterized. The prototype solar cell has presented a decent performance. The suitable bandgap and highly appealing photoresponsivity demonstrate the as-synthesized CBS nanocrystals as an alternative to existing Cd- and Pb-containing nanocrystals for optoelectronic and photovoltaic devices.