ZnS thin films were prepared by sulfuring zinc thin films at different sulfuration temperatures. The crystal structure,surface morphology, defects, and optical properties of the thin films were characterized by x-ray ...ZnS thin films were prepared by sulfuring zinc thin films at different sulfuration temperatures. The crystal structure,surface morphology, defects, and optical properties of the thin films were characterized by x-ray diffraction(XRD), scanning electron microscopy(SEM), positron annihilation Doppler broadening, and UV-Vis spectrophotometer, respectively.It was found that the(200)-plane preferred orientation of the ZnS thin films changed to(111)-plane with increasing sulfidation temperature. Moreover, a number of large holes were generated at 420?C and eliminated at 440?C. The concentration of defects was lowest when the sulfuration temperature was 440?C. The optical transmission of all samples was maintained at 60%–80% in the wavelength range of 400 nm–800 nm, and the band energy of the ZnS thin films was approximately3.5 e V for all treatment temperatures except 430?C.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.11705212 and 11675188)
文摘ZnS thin films were prepared by sulfuring zinc thin films at different sulfuration temperatures. The crystal structure,surface morphology, defects, and optical properties of the thin films were characterized by x-ray diffraction(XRD), scanning electron microscopy(SEM), positron annihilation Doppler broadening, and UV-Vis spectrophotometer, respectively.It was found that the(200)-plane preferred orientation of the ZnS thin films changed to(111)-plane with increasing sulfidation temperature. Moreover, a number of large holes were generated at 420?C and eliminated at 440?C. The concentration of defects was lowest when the sulfuration temperature was 440?C. The optical transmission of all samples was maintained at 60%–80% in the wavelength range of 400 nm–800 nm, and the band energy of the ZnS thin films was approximately3.5 e V for all treatment temperatures except 430?C.
