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    • 6. 发明授权
    • Ultra-shallow junction dopant layer having a peak concentration within a dielectric layer
    • 在介电层内具有峰值浓度的超浅结掺杂剂层
    • US06329704B1
    • 2001-12-11
    • US09458530
    • 1999-12-09
    • Hiroyuki AkatsuOmer H. DokumaciSuryanarayan G. HegdeYujun LiRajesh RengarajanPaul A. Ronsheim
    • Hiroyuki AkatsuOmer H. DokumaciSuryanarayan G. HegdeYujun LiRajesh RengarajanPaul A. Ronsheim
    • H01L29167
    • H01L21/2652H01L21/2254H01L21/2255H01L29/6659
    • A process for forming an ultra-shallow junction depth, doped region within a silicon substrate. The process includes forming a dielectric film on the substrate, then implanting an ionic dopant species into the structure. The profile of the implanted species includes a population implanted through the dielectric film and into the silicon substrate, and a peak concentration deliberately confined in the dielectric film in close proximity to the interface between the dielectric film and the silicon substrate. A high-energy, low-dosage implant process is used and produces a structure that is substantially free of dislocation loops and other defect clusters. An annealing process is used to drive the peak concentration closer to the interface, and some of the population of the originally implanted species from the dielectric film into the silicon substrate. A low thermal budget is maintained because of the proximity of the as-implanted peak concentration to the interface and the presence of species implanted through the dielectric film and into the substrate.
    • 一种用于在硅衬底内形成超浅结深度掺杂区的工艺。 该方法包括在衬底上形成电介质膜,然后将离子掺杂剂物质注入结构中。 植入物种的轮廓包括通过电介质膜注入硅衬底中的群体,以及刻意限制在电介质膜中的接近于介电膜和硅衬底之间界面的峰值浓度。 使用高能量,低剂量的植入工艺,并且产生基本上不含位错环和其它缺陷簇的结构。 使用退火工艺来驱动更接近界面的峰值浓度,以及从电介质膜到硅衬底的最初注入物质的一些群体。 由于植入的峰浓度与界面的接近以及通过电介质膜注入并进入衬底的物质的存在,维持了低热量预算。