Dependence of physical and chemical properties of SbS thin film prepared by APCVD method on deposition time

Antimony sulfide (SbS) thin films are prepared by the atmospheric pressure chemical vapor deposition method. The effect of deposition time (5, 10, 15, and 20 min) on the properties of the sample is studied by different analysis techniques. X-ray diffraction patterns displayed that the samples crystallinity increased with enhancement in deposition time. Field emission scanning electron microscopy images revealed that the films prepared at deposition times of 10, 15, and 20 min have a dense pyramidal structure without cracks. The size and shape of the grains indicated that enhancement of the deposition time increased the surface roughness. Optical studies have revealed that the transmittance spectrum of films decreases with the increasing thickness of the films. Also, the low light reflectance of the samples is due to the light trapping on the rough or corrugated surface of the film. The electrochemical performances of the SbS electrodes are recognized by the cyclic voltammetry curves, and the maximum specific capacitance obtained for the electrode prepared at 15 min was 436 F g, making it promising for application in pseudo-capacitors.