REDUCING CONTAMINATION IN A PROCESS FLOW OF FORMING A CHANNEL SEMICONDUCTOR ALLOY IN A SEMICONDUCTOR DEVICE
    21.
    发明申请
    REDUCING CONTAMINATION IN A PROCESS FLOW OF FORMING A CHANNEL SEMICONDUCTOR ALLOY IN A SEMICONDUCTOR DEVICE 有权
    在半导体器件中形成通道半导体合金的工艺流程中减少污染

    公开(公告)号:US20120009751A1

    公开(公告)日:2012-01-12

    申请号:US13237265

    申请日:2011-09-20

    IPC分类号: H01L21/336 H01L21/20

    CPC分类号: H01L21/28 H01L21/8234

    摘要: In sophisticated approaches for forming high-k metal gate electrode structures in an early manufacturing stage, a threshold adjusting semiconductor alloy may be deposited on the basis of a selective epitaxial growth process without affecting the back side of the substrates. Consequently, any negative effects, such as contamination of substrates and process tools, reduced surface quality of the back side and the like, may be suppressed or reduced by providing a mask material and preserving the material at least during the selective epitaxial growth process.

    摘要翻译: 在用于在早期制造阶段形成高k金属栅电极结构的复杂方法中,可以在选择性外延生长工艺的基础上沉积阈值调节半导体合金,而不会影响衬底的背面。 因此,至少在选择性外延生长过程中,可以通过提供掩模材料和保存材料来抑制或减少背面等的任何负面影响,例如衬底和工艺工具的污染,降低表面质量等。

    Transistor with embedded Si/Ge material having reduced offset to the channel region
    22.
    发明授权
    Transistor with embedded Si/Ge material having reduced offset to the channel region 有权
    具有嵌入的Si / Ge材料的晶体管具有减小到沟道区的偏移

    公开(公告)号:US08071442B2

    公开(公告)日:2011-12-06

    申请号:US12552642

    申请日:2009-09-02

    IPC分类号: H01L21/8242

    摘要: A strain-inducing semiconductor alloy may be formed on the basis of cavities which may have a non-rectangular shape, which may be maintained even during corresponding high temperature treatments by providing an appropriate protection layer, such as a silicon dioxide material. Consequently, a lateral offset of the strain-inducing semiconductor material may be reduced, while nevertheless providing a sufficient thickness of corresponding offset spacers during the cavity etch process, thereby preserving gate electrode integrity. For instance, P-channel transistors may have a silicon/germanium alloy with a hexagonal shape, thereby significantly enhancing the overall strain transfer efficiency.

    摘要翻译: 应变诱导半导体合金可以基于可以具有非矩形形状的空腔形成,即使在相应的高温处理期间也可以通过提供适当的保护层(例如二氧化硅材料)来维持。 因此,可以减小应变诱导半导体材料的横向偏移,同时在腔蚀刻工艺期间提供足够厚度的相应的偏移间隔物,从而保持栅电极的完整性。 例如,P沟道晶体管可以具有六角形状的硅/锗合金,从而显着提高总的应变转移效率。

    ENHANCING DEPOSITION UNIFORMITY OF A CHANNEL SEMICONDUCTOR ALLOY BY FORMING A RECESS PRIOR TO THE WELL IMPLANTATION
    24.
    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。

    Methods of forming a layer of silicon on a layer of silicon/germanium
    28.
    发明授权
    Methods of forming a layer of silicon on a layer of silicon/germanium 有权
    在硅/锗层上形成硅层的方法

    公开(公告)号:US08969190B2

    公开(公告)日:2015-03-03

    申请号:US13593614

    申请日:2012-08-24

    IPC分类号: H01L21/44

    摘要: Disclosed herein are various methods of forming a layer of silicon on a layer of silicon/germanium. In one example, a method disclosed herein includes forming a silicon/germanium material on a semiconducting substrate, after forming the silicon/germanium material, performing a heating process to raise a temperature of the substrate to a desired silicon formation temperature while flowing a silicon-containing precursor and a chlorine-containing precursor into the deposition chamber during the heating process, and, after the temperature of the substrate reaches the desired silicon formation temperature, forming a layer of silicon on the silicon/germanium material.

    摘要翻译: 本文公开了在硅/锗层上形成硅层的各种方法。 在一个实例中,本文公开的方法包括在形成硅/锗材料之后,在半导体衬底上形成硅/锗材料,执行加热过程以将衬底的温度升高到期望的硅形成温度, 并且在基板的温度达到所需的硅形成温度之后,在硅/锗材料上形成硅层。