Low-carrier density and high-crystallinity molybdenum disulfide (MoS2) films were fabricated by low-temperature and clean process based on a UHV RF sputtering system. This paper focuses on improving crystallinity and reducing the number of sulfur defects of sputtered-MoS2 film. We have fabricated MoS2 films at lower than 400 degrees C using the sputtering and H2S post-deposition annealing processes. Consequently, MoS2 films with high crystallinity and appropriate S/Mo ratio were obtained. Eventually, a low carrier density of 3.5 x 10(17) cm(-3) and the Hall-effect mobility of 12 cm(2)V(-1)s(-1) were achieved.
机构:
Department of Industrial Engineering, Centre NANO-MATES, University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA)Department of Industrial Engineering, Centre NANO-MATES, University of Salerno, Via Giovanni Paolo II 132, Fisciano (SA)