Effect of concentration of complexing agent (tartaric acid) on the properties of spray deposited Sb2S3 thin films

Antimony trisulphide thin films have been prepared by a spray pyrolysis technique using various concentrations of complexing agent (tartaric acid) in the spray solution. These films are characterized for structural, electrical and optical properties. The results of XRD studies reveal that the films are polycrystalline. The crystallinity and direction of growth is found to be a function of the concentration of complexing agent. It is found that resistivity varies with the concentration of complexing agent. The resistivity of the films is 106–107 Ω cm−1. The band gap energy also varies with the concentration of the complexing agent from 1.92 to 2.13 eV.