摘要
基于化学水浴法,以硫代乙酰胺为硫源、氯化镉为镉源、尿素为缓冲剂,在酸性条件下制备了CdS薄膜。采用台阶仪、X射线衍射仪、扫描电镜和紫外/可见光分光光度计,研究了酸性条件下化学水浴沉积时间对硫化镉薄膜厚度、结构、形貌和光学特性的影响。结果表明,沉积所得的CdS薄膜为六角纤维锌矿结构。随着沉积时间的延长,薄膜厚度和晶粒尺寸随之增大,带隙随之减小。当沉积温度为80℃,沉积时间为30min时,CdS薄膜可见光波段平均透过率接近80%。
CdS thin films were deposited in acidic chemical bath with thioacetamide,cadmium chloride urea used as the source of Cd and S and the buffering agent,respectively.Profilometer,SEM,XRD and UV/V is spectrometer were used to study the effect of the deposition time on the film thickness,structure,morphology and optical properties of the deposited CdS film.The results show that the films are of hexagonal wurtzite structure.With the increasing of the deposition time,the thickness and particle size of the films increased,but the band gaps decreased.The average transmission of CdS films is about 80% when the deposition time is 30 minutes and deposition temperature 80℃.
出处
《上海有色金属》
CAS
2010年第4期163-166,共4页
Shanghai Nonferrous Metals
关键词
硫化镉薄膜
化学水浴
沉积时间
退火
光伏
CdS film
chemical bath
deposition time
annealing
photovoltaic
