Effect of Cd2+ Concentration on the Structure and Properties of CBD-CdS
The CdS films were deposited on soda lime glass (SLG) substrate by Chemistry Bath Deposition (CBD). The influence of cadmium concentration on structure and properties of CdS films had been investigated. The phase compositions of the films were characterized by X-ray diffraction (XRD). The microstructure of the films was observed by Scanning Electron Microscope (SEM). The transmittance of the films was measured by Ultraviolet-visible Spectrophotometer. The results show that the cadmium concentration has great influence on Crystallite structure and grain size of the films. Under the condition of Cd2+ concentration of 0.006mol/L, the crystalline degree of the film is higher and the crystal growth is more remarkable, which help to make great progress on transmittance and optical band gap of the films.