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    • 2. 发明申请
    • Shallow amorphizing implant for gettering of deep secondary end of range defects
    • 浅非晶化植入物用于吸收深度范围缺陷的二次端
    • US20050136623A1
    • 2005-06-23
    • US10743247
    • 2003-12-22
    • Chung TanHyeokjae LeeEng ChorElgin Quek
    • Chung TanHyeokjae LeeEng ChorElgin Quek
    • H01L21/265H01L21/336H01L29/10H01L21/322
    • H01L29/6659H01L21/26513H01L21/26586H01L29/1083H01L29/6656
    • A pocket implant process to reduce defects. We provide a gate structure, on a semiconductor substrate doped with a first conductivity type dopant. We perform a pocket amorphizing implantation procedure to form a pocket implant region adjacent to the gate structure, and an amorphous pocket region. Next, we perform a shallow amorphizing implant to form an amorphous shallow implant region. The amorphous shallow implant region being formed at a second depth above the amorphous pocket region. The substrate above the amorphous shallow implant region preferably remains crystalline. We perform a S/D implant procedure to form Deep S/D regions. We perform an anneal procedure preferably comprised of a first soak step and a second spike step to recrystalilze the amorphous shallow implant region and the amorphous pocket region, The defects created by the pocket implant are reduced by the shallow amorphous implant.
    • 口袋植入法减少缺陷。 我们在掺杂有第一导电类型掺杂剂的半导体衬底上提供栅极结构。 我们执行口袋非晶化植入程序以形成与栅极结构相邻的凹穴注入区域和无定形凹穴区域。 接下来,我们执行浅非晶化植入物以形成无定形浅植入区域。 非晶浅植入区域形成在无定形袋区域上方的第二深度处。 非晶浅植入区域之上的衬底优选保持结晶。 我们执行S / D植入程序以形成深S / D区域。 我们执行优选由第一浸泡步骤和第二尖峰步骤组成的退火程序,以重结晶非晶浅注入区域和非晶质凹槽区域。由浅的非晶态植入物减少由凹穴注入产生的缺陷。