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    • 9. 发明授权
    • Nickel silicide formation for semiconductor components
    • 半导体元件的硅化镍形成
    • US08546259B2
    • 2013-10-01
    • US11861421
    • 2007-09-26
    • Juanita DeLoachJiong-Ping LuHaowen Bu
    • Juanita DeLoachJiong-Ping LuHaowen Bu
    • H01L21/44
    • H01L29/665H01L21/26506H01L21/28052H01L21/28518H01L29/7833
    • Semiconductor components are often fabricated that include a nickel silicide layer, e.g., as part of a gate electrode in a transistor component, which may be formed by forming a layer of nickel on a silicon-containing area of the semiconductor substrate, followed by thermally annealing the semiconductor substrate to produce a nickel silicide. However, nickel may tend to diffuse into silicon during the thermal anneal, and may form crystals that undesirably increase the sheet resistance in the transistor. Carbon may be placed with the nickel to serve as a diffusion suppressant and/or to prevent nickel crystal formation during thermal annealing. Methods are disclosed for utilizing this technique, as well as semiconductor components formed in accordance with this technique.
    • 通常制造半导体部件,其包括硅化镍层,例如,作为晶体管部件中的栅电极的一部分,其可以通过在半导体衬底的含硅区域上形成镍层,然后进行热退火 半导体衬底以产生硅化镍。 然而,镍可能在热退火期间扩散到硅中,并且可能形成不期望地增加晶体管中的薄层电阻的晶体。 碳可以与镍一起放置以用作扩散抑制剂和/或防止在热退火期间形成镍晶体。 公开了利用该技术的方法以及根据该技术形成的半导体部件。