Structural and optical properties of Cu2SnS3 sprayed thin films

Abstract This paper reports the successful deposition of Cu 2 SnS 3 thin films obtained on Pyrex glass substrates using a sulfur annealing at 550 °C from a superposition of SnS 2 and Cu x S sprayed thin films. Cu 2 SnS 3 thin films crystallize in the cubic structure and the crystallites exhibit preferential (111) orientation of the grains. Optical measurements show that Cu 2 SnS 3 thin films prepared under such conditions have a direct band gap of about 1.15 eV.