Effect of hydrazine on ZnS thin films over glass

摘要

Thin Zinc sulphide films are deposited on glass using the chemical bath deposition technique. Zinc sulfate, hydrazine and thiourea at a pH~10.5 were used in the deposit of the ZnS thin films. The surface morphology was affected by the amount of hydrazine, which demonstrates a compact surface for 0.5 ml of hydrazine and atomic ratio of 1/1, showing a surface free of pinholes. The temperature variations show that at temperatures of 80 °C it had a better deposited. All deposited films exhibit a relatively high transparency in the range of 300 to 800 nm. The band gap varies from 3.62 to 4.21 eV.