ENHANCING DEPOSITION UNIFORMITY OF A CHANNEL SEMICONDUCTOR ALLOY BY FORMING A RECESS PRIOR TO THE WELL IMPLANTATION
    1.
    发明申请
    ENHANCING DEPOSITION UNIFORMITY OF A CHANNEL SEMICONDUCTOR ALLOY BY FORMING A RECESS PRIOR TO THE WELL IMPLANTATION 有权
    通过在较好的植入前形成一个通道,提高通道半导体合金的沉积均匀性

    公开(公告)号:US20110156172A1

    公开(公告)日:2011-06-30

    申请号:US12908053

    申请日:2010-10-20

    IPC分类号: H01L29/78 H01L21/336

    摘要: When forming sophisticated gate electrode structures requiring a threshold adjusting semiconductor alloy for one type of transistor, a recess is formed in the corresponding active region, thereby providing superior process uniformity during the deposition of the semiconductor material. Moreover, the well dopant species is implanted after the recessing, thereby avoiding undue dopant loss. Due to the recess, any exposed sidewall surface areas of the active region may be avoided during the selective epitaxial growth process, thereby significantly contributing to enhanced threshold stability of the resulting transistor including the high-k metal gate stack.

    摘要翻译: 当形成需要用于一种类型的晶体管的阈值调节半导体合金的复杂的栅电极结构时,在相应的有源区中形成凹部,从而在半导体材料的沉积期间提供优异的工艺均匀性。 此外,在凹陷之后注入阱掺杂剂物质,从而避免不必要的掺杂剂损失。 由于凹槽,可以在选择性外延生长工艺期间避免有源区的任何暴露的侧壁表面区域,从而显着地有助于提高包括高k金属栅叠层的晶体管的阈值稳定性。

    Enhancing deposition uniformity of a channel semiconductor alloy by forming a recess prior to the well implantation
    5.
    发明授权
    Enhancing deposition uniformity of a channel semiconductor alloy by forming a recess prior to the well implantation 有权
    通过在阱注入之前形成凹槽来提高通道半导体合金的沉积均匀性

    公开(公告)号:US08722486B2

    公开(公告)日:2014-05-13

    申请号:US12908053

    申请日:2010-10-20

    IPC分类号: H01L21/8238

    摘要: When forming sophisticated gate electrode structures requiring a threshold adjusting semiconductor alloy for one type of transistor, a recess is formed in the corresponding active region, thereby providing superior process uniformity during the deposition of the semiconductor material. Moreover, the well dopant species is implanted after the recessing, thereby avoiding undue dopant loss. Due to the recess, any exposed sidewall surface areas of the active region may be avoided during the selective epitaxial growth process, thereby significantly contributing to enhanced threshold stability of the resulting transistor including the high-k metal gate stack.

    摘要翻译: 当形成需要用于一种类型的晶体管的阈值调节半导体合金的复杂的栅电极结构时,在相应的有源区中形成凹部,从而在半导体材料的沉积期间提供优异的工艺均匀性。 此外,在凹陷之后注入阱掺杂剂物质,从而避免不必要的掺杂剂损失。 由于凹槽,可以在选择性外延生长工艺期间避免有源区的任何暴露的侧壁表面区域,从而显着地有助于提高包括高k金属栅叠层的晶体管的阈值稳定性。

    Buried etch stop layer in trench isolation structures for superior surface planarity in densely packed semiconductor devices
    7.
    发明授权
    Buried etch stop layer in trench isolation structures for superior surface planarity in densely packed semiconductor devices 有权
    在密集封装的半导体器件中,在沟槽隔离结构中埋设蚀刻停止层以获得出色的表面平面度

    公开(公告)号:US08334573B2

    公开(公告)日:2012-12-18

    申请号:US12858727

    申请日:2010-08-18

    IPC分类号: H01L27/088

    摘要: Material erosion of trench isolation structures in advanced semiconductor devices may be reduced by incorporating an appropriate mask layer stack in an early manufacturing stage. For example, a silicon nitride material may be incorporated as a buried etch stop layer prior to a sequence for patterning active regions and forming a strain-inducing semiconductor alloy therein, wherein, in particular, the corresponding cleaning process prior to the selective epitaxial growth process has been identified as a major source for causing deposition-related irregularities upon depositing the interlayer dielectric material.

    摘要翻译: 先进的半导体器件中的沟槽隔离结构的材料侵蚀可以通过在早期制造阶段中合并适当的掩模层堆叠来减少。 例如,氮化硅材料可以在用于图案化有源区域并在其中形成应变诱导半导体合金的序列之前作为掩埋蚀刻停止层引入,其中特别地,在选择性外延生长工艺之前的相应的清洁工艺 已经被确定为在沉积层间介电材料时引起沉积相关不规则的主要来源。