Optical and photocatalytic properties of chemically deposited CuxS layers

Thin films and layers of copper sulfide with CuxS composition were obtained by chemical deposition from aqueous medium on substrates of matted and unmatted quartz. Using scanning electron microscopy and EDX analysis, the features of the morphology and composition of layers on different substrates were revealed. An excess of copper was found in the semiconductor layer. For the films grown on unmatted quartz, the transmission spectra were determined, as well as the optical band gap by processing the Tauc equation. The layers deposited on matted quartz were investigated for photocatalytic activity by oxidation in their presence of hydroquinone under the action of UV radiation.