Effects of sulfide treatment on the photoluminescent and structural properties of electrodeposited CdS films

This study investigates the effect of sulfide treatment on the structural and photoluminescent properties of the electrodeposited CdS film by Raman spectroscopy, photoluminescence and X-ray diffraction measurements. The dependences of the film quality and luminescence on sulfide treatment time were found. The crystallinity can be enhanced while following sulfide treatment. Such an improvement indicates the reduced number of the sulfur-related vacancies as a result of the adsorption (incorporation) of the sulfur atoms during the sulfide treatment process. In addition, a suitable sulfide treatment time may lead to a smoother CdS surface.