Effect of Copper Concentration on the Optical Properties of Cu2Zn0.8Cd0.2SnS4 Pentrary Alloy Nanostructures

Abstract

Cu2Zn0.2Cd0.8SnS4pentrary alloy nanostructures deposited at different molarity copper 0.3, 0. 5, 0. 7 and 0.9 M were grown by sol-gel method on glass substrate. The optical absorption indicates that the band gap of Cu2Zn0.2Cd0.8SnS4nanostructures decreases linearly from 1.80 eV (0.3M 0) to 1.60 eV (0.9M). The transmittance value is in the range 63-49% depending on the Cu content.